All pastes #913010 Raw Edit

Stuff

public text v1 · immutable
·published 2008-02-21 19:50 UTC
rendered paste body
interface: eth0 (192.168.2.0/255.255.255.0)
filter: (ip or ip6) and ( port 5061 )
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  INVITE sip:2600@192.168.2.155:5061;user=phone SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD
  ..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>..CSeq: 1 INVITE..
  Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.168.2.116:5060>..Allow: INVITE, ACK, BYE, CANC
  EL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0
  258..Supported: 100rel,replaces..Allow-Events: talk,hold,conference..Max-Forwards: 70..Content-Type: application/sdp..Co
  ntent-Length: 251....v=0..o=- 1203549851 1203549851 IN IP4 192.168.2.116..s=Polycom IP Phone..c=IN IP4 192.168.2.116..t=
  0 0..m=audio 2232 RTP/AVP 0 8 18 101..a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:8 PCMA/8000..a=rtpmap:18 G729/8000..a=r
  tpmap:101 telephone-event/8000..                                                                                        
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  INVITE sip:2600@192.168.2.155:5061;user=phone SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD
  ..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>..CSeq: 1 INVITE..
  Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.168.2.116:5060>..Allow: INVITE, ACK, BYE, CANC
  EL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0
  258..Supported: 100rel,replaces..Allow-Events: talk,hold,conference..Max-Forwards: 70..Content-Type: application/sdp..Co
  ntent-Length: 251....v=0..o=- 1203549851 1203549851 IN IP4 192.168.2.116..s=Polycom IP Phone..c=IN IP4 192.168.2.116..t=
  0 0..m=audio 2232 RTP/AVP 0 8 18 101..a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:8 PCMA/8000..a=rtpmap:18 G729/8000..a=r
  tpmap:101 telephone-event/8000..                                                                                        
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  INVITE sip:2600@192.168.2.155:5061;user=phone SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD
  ..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>..CSeq: 1 INVITE..
  Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.168.2.116:5060>..Allow: INVITE, ACK, BYE, CANC
  EL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0
  258..Supported: 100rel,replaces..Allow-Events: talk,hold,conference..Max-Forwards: 70..Content-Type: application/sdp..Co
  ntent-Length: 251....v=0..o=- 1203549851 1203549851 IN IP4 192.168.2.116..s=Polycom IP Phone..c=IN IP4 192.168.2.116..t=
  0 0..m=audio 2232 RTP/AVP 0 8 18 101..a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:8 PCMA/8000..a=rtpmap:18 G729/8000..a=r
  tpmap:101 telephone-event/8000..                                                                                        
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  INVITE sip:2600@192.168.2.155:5061;user=phone SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD
  ..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>..CSeq: 1 INVITE..
  Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.168.2.116:5060>..Allow: INVITE, ACK, BYE, CANC
  EL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0
  258..Supported: 100rel,replaces..Allow-Events: talk,hold,conference..Max-Forwards: 70..Content-Type: application/sdp..Co
  ntent-Length: 251....v=0..o=- 1203549851 1203549851 IN IP4 192.168.2.116..s=Polycom IP Phone..c=IN IP4 192.168.2.116..t=
  0 0..m=audio 2232 RTP/AVP 0 8 18 101..a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:8 PCMA/8000..a=rtpmap:18 G729/8000..a=r
  tpmap:101 telephone-event/8000..                                                                                        
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  INVITE sip:2600@192.168.2.155:5061;user=phone SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD
  ..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>..CSeq: 1 INVITE..
  Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.168.2.116:5060>..Allow: INVITE, ACK, BYE, CANC
  EL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0
  258..Supported: 100rel,replaces..Allow-Events: talk,hold,conference..Max-Forwards: 70..Content-Type: application/sdp..Co
  ntent-Length: 251....v=0..o=- 1203549851 1203549851 IN IP4 192.168.2.116..s=Polycom IP Phone..c=IN IP4 192.168.2.116..t=
  0 0..m=audio 2232 RTP/AVP 0 8 18 101..a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:8 PCMA/8000..a=rtpmap:18 G729/8000..a=r
  tpmap:101 telephone-event/8000..                                                                                        
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 100 Giving a try..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.
  168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>..CSeq: 1 INVITE..Call-ID: 2218dbf6-953065a0-8f
  385617@192.168.2.116..Server: OpenSER (1.3.0-notls (i386/linux))..Content-Length: 0....                                 
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 100 Giving a try..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.
  168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>..CSeq: 1 INVITE..Call-ID: 2218dbf6-953065a0-8f
  385617@192.168.2.116..Server: OpenSER (1.3.0-notls (i386/linux))..Content-Length: 0....                                 
#
U 192.168.2.155:5061 -> 192.168.2.105:5060
  INVITE sip:2600@192.168.2.105:5060 SIP/2.0..Record-Route: <sip:192.168.2.155:5061;lr=on>..Via: SIP/2.0/UDP 192.168.2.155
  :5061;branch=z9hG4bKfadd.dc2183b3.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <si
  p:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>..CSeq: 1 INVITE..Call-ID: 2218dbf6-
  953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.168.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO,
   MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Supported: 10
  0rel,replaces..Allow-Events: talk,hold,conference..Max-Forwards: 69..Content-Type: application/sdp..Content-Length: 251.
  ...v=0..o=- 1203549851 1203549851 IN IP4 192.168.2.116..s=Polycom IP Phone..c=IN IP4 192.168.2.116..t=0 0..m=audio 2232 
  RTP/AVP 0 8 18 101..a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:8 PCMA/8000..a=rtpmap:18 G729/8000..a=rtpmap:101 telephon
  e-event/8000..                                                                                                          
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 100 Trying..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKfadd.dc2183b3.0..Via: SIP/2.0/UDP 192.168.2.116:50
  60;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.1
  55;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2
  600@192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0
  .0258..Content-Length: 0....                                                                                            
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 180 Ringing..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKfadd.dc2183b3.0..Via: SIP/2.0/UDP 192.168.2.116:5
  060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.
  155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:
  2600@192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.
  0.0258..Allow-Events: talk,hold,conference..Require: 100rel..RSeq: 8193..Content-Length: 0....                          
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 100 Giving a try..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.
  168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>..CSeq: 1 INVITE..Call-ID: 2218dbf6-953065a0-8f
  385617@192.168.2.116..Server: OpenSER (1.3.0-notls (i386/linux))..Content-Length: 0....                                 
#
U 192.168.2.155:5061 -> 192.168.2.105:5060
  INVITE sip:2600@192.168.2.105:5060 SIP/2.0..Record-Route: <sip:192.168.2.155:5061;lr=on>..Via: SIP/2.0/UDP 192.168.2.155
  :5061;branch=z9hG4bKfadd.dc2183b3.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <si
  p:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>..CSeq: 1 INVITE..Call-ID: 2218dbf6-
  953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.168.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO,
   MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Supported: 10
  0rel,replaces..Allow-Events: talk,hold,conference..Max-Forwards: 69..Content-Type: application/sdp..Content-Length: 251.
  ...v=0..o=- 1203549851 1203549851 IN IP4 192.168.2.116..s=Polycom IP Phone..c=IN IP4 192.168.2.116..t=0 0..m=audio 2232 
  RTP/AVP 0 8 18 101..a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:8 PCMA/8000..a=rtpmap:18 G729/8000..a=rtpmap:101 telephon
  e-event/8000..                                                                                                          
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 180 Ringing..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKfadd.dc2183b3.0..Via: SIP/2.0/UDP 192.168.2.116:5
  060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.
  155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:
  2600@192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.
  0.0258..Allow-Events: talk,hold,conference..Require: 100rel..RSeq: 8193..Content-Length: 0....                          
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 100 Giving a try..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.
  168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>..CSeq: 1 INVITE..Call-ID: 2218dbf6-953065a0-8f
  385617@192.168.2.116..Server: OpenSER (1.3.0-notls (i386/linux))..Content-Length: 0....                                 
#
U 192.168.2.155:5061 -> 192.168.2.105:5060
  INVITE sip:2600@192.168.2.105:5060 SIP/2.0..Record-Route: <sip:192.168.2.155:5061;lr=on>..Via: SIP/2.0/UDP 192.168.2.155
  :5061;branch=z9hG4bKfadd.dc2183b3.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <si
  p:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>..CSeq: 1 INVITE..Call-ID: 2218dbf6-
  953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.168.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO,
   MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Supported: 10
  0rel,replaces..Allow-Events: talk,hold,conference..Max-Forwards: 69..Content-Type: application/sdp..Content-Length: 251.
  ...v=0..o=- 1203549851 1203549851 IN IP4 192.168.2.116..s=Polycom IP Phone..c=IN IP4 192.168.2.116..t=0 0..m=audio 2232 
  RTP/AVP 0 8 18 101..a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:8 PCMA/8000..a=rtpmap:18 G729/8000..a=rtpmap:101 telephon
  e-event/8000..                                                                                                          
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 180 Ringing..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKfadd.dc2183b3.0..Via: SIP/2.0/UDP 192.168.2.116:5
  060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.
  155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:
  2600@192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.
  0.0258..Allow-Events: talk,hold,conference..Require: 100rel..RSeq: 8193..Content-Length: 0....                          
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 100 Giving a try..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.
  168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>..CSeq: 1 INVITE..Call-ID: 2218dbf6-953065a0-8f
  385617@192.168.2.116..Server: OpenSER (1.3.0-notls (i386/linux))..Content-Length: 0....                                 
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKfadd.dc2183b3.0..Via: SIP/2.0/UDP 192.168.2.116:5060;b
  ranch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;u
  ser=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@
  192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSA
  GE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: appli
  cation/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614335 IN IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192
  .168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:101 telephone-event/8000..    
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKfadd.dc2183b3.0..Via: SIP/2.0/UDP 192.168.2.116:5060;b
  ranch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;u
  ser=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@
  192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSA
  GE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: appli
  cation/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614335 IN IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192
  .168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:101 telephone-event/8000..    
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKfadd.dc2183b3.0..Via: SIP/2.0/UDP 192.168.2.116:5060;b
  ranch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;u
  ser=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@
  192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSA
  GE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: appli
  cation/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614335 IN IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192
  .168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:101 telephone-event/8000..    
#
U 192.168.2.155:5061 -> 192.168.2.105:5060
  INVITE sip:2600@192.168.2.105:5060 SIP/2.0..Record-Route: <sip:192.168.2.155:5061;lr=on>..Via: SIP/2.0/UDP 192.168.2.155
  :5061;branch=z9hG4bKfadd.dc2183b3.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <si
  p:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>..CSeq: 1 INVITE..Call-ID: 2218dbf6-
  953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.168.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO,
   MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Supported: 10
  0rel,replaces..Allow-Events: talk,hold,conference..Max-Forwards: 69..Content-Type: application/sdp..Content-Length: 251.
  ...v=0..o=- 1203549851 1203549851 IN IP4 192.168.2.116..s=Polycom IP Phone..c=IN IP4 192.168.2.116..t=0 0..m=audio 2232 
  RTP/AVP 0 8 18 101..a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:8 PCMA/8000..a=rtpmap:18 G729/8000..a=rtpmap:101 telephon
  e-event/8000..                                                                                                          
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKfadd.dc2183b3.0..Via: SIP/2.0/UDP 192.168.2.116:5060;b
  ranch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;u
  ser=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@
  192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSA
  GE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: appli
  cation/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614335 IN IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192
  .168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:101 telephone-event/8000..    
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKfadd.dc2183b3.0..Via: SIP/2.0/UDP 192.168.2.116:5060;b
  ranch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;u
  ser=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@
  192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSA
  GE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: appli
  cation/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614335 IN IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192
  .168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:101 telephone-event/8000..    
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKfadd.dc2183b3.0..Via: SIP/2.0/UDP 192.168.2.116:5060;b
  ranch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;u
  ser=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@
  192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSA
  GE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: appli
  cation/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614335 IN IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192
  .168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:101 telephone-event/8000..    
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKfadd.dc2183b3.0..Via: SIP/2.0/UDP 192.168.2.116:5060;b
  ranch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;u
  ser=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@
  192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSA
  GE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: appli
  cation/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614335 IN IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192
  .168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:101 telephone-event/8000..    
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 180 Ringing..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2
  .155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 221
  8dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=
  on>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Allow-Events: talk,hold,conference..Require: 100rel..RSeq: 
  8193..Content-Length: 0....                                                                                             
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  PRACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKc7067cd423E86125..From: "27
  00" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route
  : <sip:192.168.2.155:5061;lr=on>..CSeq: 2 PRACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@1
  92.168.2.116:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..RAck: 8193 1 INVITE..Max-Forwards: 70..Conte
  nt-Length: 0....                                                                                                        
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  PRACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKc7067cd423E86125..From: "27
  00" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route
  : <sip:192.168.2.155:5061;lr=on>..CSeq: 2 PRACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@1
  92.168.2.116:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..RAck: 8193 1 INVITE..Max-Forwards: 70..Conte
  nt-Length: 0....                                                                                                        
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKfadd.dc2183b3.0..Via: SIP/2.0/UDP 192.168.2.116:5060;b
  ranch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;u
  ser=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@
  192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSA
  GE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: appli
  cation/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614335 IN IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192
  .168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:101 telephone-event/8000..    
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  PRACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKc7067cd423E86125..From: "27
  00" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route
  : <sip:192.168.2.155:5061;lr=on>..CSeq: 2 PRACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@1
  92.168.2.116:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..RAck: 8193 1 INVITE..Max-Forwards: 70..Conte
  nt-Length: 0....                                                                                                        
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 180 Ringing..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2
  .155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 221
  8dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=
  on>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Allow-Events: talk,hold,conference..Require: 100rel..RSeq: 
  8193..Content-Length: 0....                                                                                             
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  PRACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKc7067cd423E86125..From: "27
  00" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route
  : <sip:192.168.2.155:5061;lr=on>..CSeq: 2 PRACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@1
  92.168.2.116:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..RAck: 8193 1 INVITE..Max-Forwards: 70..Conte
  nt-Length: 0....                                                                                                        
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 180 Ringing..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2
  .155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 221
  8dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=
  on>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Allow-Events: talk,hold,conference..Require: 100rel..RSeq: 
  8193..Content-Length: 0....                                                                                             
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  PRACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKc7067cd423E86125..From: "27
  00" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route
  : <sip:192.168.2.155:5061;lr=on>..CSeq: 2 PRACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@1
  92.168.2.116:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..RAck: 8193 1 INVITE..Max-Forwards: 70..Conte
  nt-Length: 0....                                                                                                        
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKfadd.dc2183b3.0..Via: SIP/2.0/UDP 192.168.2.116:5060;b
  ranch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;u
  ser=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@
  192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSA
  GE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: appli
  cation/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614335 IN IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192
  .168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:101 telephone-event/8000..    
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>
  ;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6
  -953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..
  Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSou
  ndPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: application/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614335 I
  N IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192.168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap
  :0 PCMU/8000..a=rtpmap:101 telephone-event/8000..                                                                       
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700
  " <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.1
  68.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-A
  gent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....                               
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKfadd.dc2183b3.0..Via: SIP/2.0/UDP 192.168.2.116:5060;b
  ranch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;u
  ser=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@
  192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSA
  GE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: appli
  cation/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614335 IN IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192
  .168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:101 telephone-event/8000..    
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>
  ;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6
  -953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..
  Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSou
  ndPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: application/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614335 I
  N IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192.168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap
  :0 PCMU/8000..a=rtpmap:101 telephone-event/8000..                                                                       
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700
  " <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.1
  68.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-A
  gent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....                               
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>
  ;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6
  -953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..
  Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSou
  ndPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: application/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614335 I
  N IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192.168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap
  :0 PCMU/8000..a=rtpmap:101 telephone-event/8000..                                                                       
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700
  " <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.1
  68.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-A
  gent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....                               
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>
  ;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6
  -953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..
  Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSou
  ndPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: application/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614335 I
  N IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192.168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap
  :0 PCMU/8000..a=rtpmap:101 telephone-event/8000..                                                                       
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700
  " <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.1
  68.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-A
  gent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....                               
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKfadd.dc2183b3.0..Via: SIP/2.0/UDP 192.168.2.116:5060;b
  ranch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;u
  ser=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@
  192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSA
  GE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: appli
  cation/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614335 IN IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192
  .168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:101 telephone-event/8000..    
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>
  ;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6
  -953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..
  Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSou
  ndPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: application/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614335 I
  N IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192.168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap
  :0 PCMU/8000..a=rtpmap:101 telephone-event/8000..                                                                       
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700
  " <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.1
  68.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-A
  gent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....                               
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>
  ;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6
  -953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..
  Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSou
  ndPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: application/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614335 I
  N IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192.168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap
  :0 PCMU/8000..a=rtpmap:101 telephone-event/8000..                                                                       
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700
  " <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.1
  68.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-A
  gent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....                               
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKfadd.dc2183b3.0..Via: SIP/2.0/UDP 192.168.2.116:5060;b
  ranch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;u
  ser=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@
  192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSA
  GE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: appli
  cation/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614335 IN IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192
  .168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:101 telephone-event/8000..    
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>
  ;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6
  -953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..
  Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSou
  ndPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: application/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614335 I
  N IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192.168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap
  :0 PCMU/8000..a=rtpmap:101 telephone-event/8000..                                                                       
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700
  " <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.1
  68.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-A
  gent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....                               
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKfadd.dc2183b3.0..Via: SIP/2.0/UDP 192.168.2.116:5060;b
  ranch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;u
  ser=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@
  192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSA
  GE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: appli
  cation/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614335 IN IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192
  .168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:101 telephone-event/8000..    
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKfadd.dc2183b3.0..Via: SIP/2.0/UDP 192.168.2.116:5060;b
  ranch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;u
  ser=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@
  192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSA
  GE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: appli
  cation/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614336 IN IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192
  .168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:101 telephone-event/8000..    
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKfadd.dc2183b3.0..Via: SIP/2.0/UDP 192.168.2.116:5060;b
  ranch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;u
  ser=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@
  192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSA
  GE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: appli
  cation/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614336 IN IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192
  .168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:101 telephone-event/8000..    
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKfadd.dc2183b3.0..Via: SIP/2.0/UDP 192.168.2.116:5060;b
  ranch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;u
  ser=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@
  192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSA
  GE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: appli
  cation/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614337 IN IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192
  .168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:101 telephone-event/8000..    
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKfadd.dc2183b3.0..Via: SIP/2.0/UDP 192.168.2.116:5060;b
  ranch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;u
  ser=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@
  192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSA
  GE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: appli
  cation/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614338 IN IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192
  .168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:101 telephone-event/8000..    
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKfadd.dc2183b3.0..Via: SIP/2.0/UDP 192.168.2.116:5060;b
  ranch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;u
  ser=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@
  192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSA
  GE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: appli
  cation/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614339 IN IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192
  .168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:101 telephone-event/8000..    
#
U 192.168.2.155:5061 -> 192.168.2.105:5060
  PRACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKcadd.d002a195.0..Via: SIP/2
  .0/UDP 192.168.2.116:5060;branch=z9hG4bKc7067cd423E86125..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..T
  o: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 2 PRACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168
  .2.116..Contact: <sip:2700@192.168.2.116:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..RAck: 8193 1 INV
  ITE..Max-Forwards: 69..Content-Length: 0....                                                                            
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKcadd.d002a195.0..Via: SIP/2.0/UDP 192.168.2.116:5060;b
  ranch=z9hG4bKc7067cd423E86125..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;
  user=phone>;tag=333F338B-7C48F4F2..CSeq: 2 PRACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@
  192.168.2.105:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Length: 0....                      
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>
  ;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6
  -953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..
  Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSou
  ndPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: application/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614335 I
  N IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192.168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap
  :0 PCMU/8000..a=rtpmap:101 telephone-event/8000..                                                                       
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700
  " <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.1
  68.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-A
  gent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....                               
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKfadd.dc2183b3.0..Via: SIP/2.0/UDP 192.168.2.116:5060;b
  ranch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;u
  ser=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@
  192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSA
  GE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: appli
  cation/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614340 IN IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192
  .168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:101 telephone-event/8000..    
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKfadd.dc2183b3.0..Via: SIP/2.0/UDP 192.168.2.116:5060;b
  ranch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;u
  ser=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@
  192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSA
  GE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: appli
  cation/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614341 IN IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192
  .168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:101 telephone-event/8000..    
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKfadd.dc2183b3.0..Via: SIP/2.0/UDP 192.168.2.116:5060;b
  ranch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;u
  ser=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@
  192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSA
  GE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: appli
  cation/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614342 IN IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192
  .168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:101 telephone-event/8000..    
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKfadd.dc2183b3.0..Via: SIP/2.0/UDP 192.168.2.116:5060;b
  ranch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;u
  ser=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@
  192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSA
  GE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: appli
  cation/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614342 IN IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192
  .168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:101 telephone-event/8000..    
#
U 192.168.2.155:5061 -> 192.168.2.105:5060
  PRACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKcadd.d002a195.0..Via: SIP/2
  .0/UDP 192.168.2.116:5060;branch=z9hG4bKc7067cd423E86125..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..T
  o: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 2 PRACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168
  .2.116..Contact: <sip:2700@192.168.2.116:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..RAck: 8193 1 INV
  ITE..Max-Forwards: 69..Content-Length: 0....                                                                            
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKcadd.d002a195.0..Via: SIP/2.0/UDP 192.168.2.116:5060;b
  ranch=z9hG4bKc7067cd423E86125..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;
  user=phone>;tag=333F338B-7C48F4F2..CSeq: 2 PRACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@
  192.168.2.105:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Length: 0....                      
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKfadd.dc2183b3.0..Via: SIP/2.0/UDP 192.168.2.116:5060;b
  ranch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;u
  ser=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@
  192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSA
  GE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: appli
  cation/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614342 IN IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192
  .168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:101 telephone-event/8000..    
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKfadd.dc2183b3.0..Via: SIP/2.0/UDP 192.168.2.116:5060;b
  ranch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;u
  ser=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@
  192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSA
  GE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: appli
  cation/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614342 IN IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192
  .168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:101 telephone-event/8000..    
#
U 192.168.2.155:5061 -> 192.168.2.105:5060
  PRACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKcadd.d002a195.0..Via: SIP/2
  .0/UDP 192.168.2.116:5060;branch=z9hG4bKc7067cd423E86125..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..T
  o: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 2 PRACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168
  .2.116..Contact: <sip:2700@192.168.2.116:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..RAck: 8193 1 INV
  ITE..Max-Forwards: 69..Content-Length: 0....                                                                            
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKcadd.d002a195.0..Via: SIP/2.0/UDP 192.168.2.116:5060;b
  ranch=z9hG4bKc7067cd423E86125..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;
  user=phone>;tag=333F338B-7C48F4F2..CSeq: 2 PRACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@
  192.168.2.105:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Length: 0....                      
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKfadd.dc2183b3.0..Via: SIP/2.0/UDP 192.168.2.116:5060;b
  ranch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;u
  ser=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@
  192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSA
  GE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: appli
  cation/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614342 IN IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192
  .168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:101 telephone-event/8000..    
#
U 192.168.2.155:5061 -> 192.168.2.105:5060
  PRACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKcadd.d002a195.0..Via: SIP/2
  .0/UDP 192.168.2.116:5060;branch=z9hG4bKc7067cd423E86125..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..T
  o: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 2 PRACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168
  .2.116..Contact: <sip:2700@192.168.2.116:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..RAck: 8193 1 INV
  ITE..Max-Forwards: 69..Content-Length: 0....                                                                            
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKcadd.d002a195.0..Via: SIP/2.0/UDP 192.168.2.116:5060;b
  ranch=z9hG4bKc7067cd423E86125..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;
  user=phone>;tag=333F338B-7C48F4F2..CSeq: 2 PRACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@
  192.168.2.105:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Length: 0....                      
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKfadd.dc2183b3.0..Via: SIP/2.0/UDP 192.168.2.116:5060;b
  ranch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;u
  ser=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@
  192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSA
  GE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: appli
  cation/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614342 IN IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192
  .168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap:0 PCMU/8000..a=rtpmap:101 telephone-event/8000..    
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>
  ;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6
  -953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..
  Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSou
  ndPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: application/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614335 I
  N IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192.168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap
  :0 PCMU/8000..a=rtpmap:101 telephone-event/8000..                                                                       
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700
  " <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.1
  68.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-A
  gent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....                               
#
U 192.168.2.155:5061 -> 192.168.2.105:5060
  PRACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKcadd.d002a195.0..Via: SIP/2
  .0/UDP 192.168.2.116:5060;branch=z9hG4bKc7067cd423E86125..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..T
  o: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 2 PRACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168
  .2.116..Contact: <sip:2700@192.168.2.116:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..RAck: 8193 1 INV
  ITE..Max-Forwards: 69..Content-Length: 0....                                                                            
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKcadd.d002a195.0..Via: SIP/2.0/UDP 192.168.2.116:5060;b
  ranch=z9hG4bKc7067cd423E86125..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;
  user=phone>;tag=333F338B-7C48F4F2..CSeq: 2 PRACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@
  192.168.2.105:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Length: 0....                      
#
U 192.168.2.155:5061 -> 192.168.2.105:5060
  PRACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKcadd.d002a195.0..Via: SIP/2
  .0/UDP 192.168.2.116:5060;branch=z9hG4bKc7067cd423E86125..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..T
  o: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 2 PRACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168
  .2.116..Contact: <sip:2700@192.168.2.116:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..RAck: 8193 1 INV
  ITE..Max-Forwards: 69..Content-Length: 0....                                                                            
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKcadd.d002a195.0..Via: SIP/2.0/UDP 192.168.2.116:5060;b
  ranch=z9hG4bKc7067cd423E86125..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;
  user=phone>;tag=333F338B-7C48F4F2..CSeq: 2 PRACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@
  192.168.2.105:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Length: 0....                      
#
U 192.168.2.155:5061 -> 192.168.2.105:5060
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKe74c7e5e2752B2BF..Via: SIP/2.
  0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To
  : <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.
  116..Contact: <sip:2700@192.168.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY,
   PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 69..Content-Length: 0....  
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>
  ;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6
  -953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..
  Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSou
  ndPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: application/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614335 I
  N IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192.168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap
  :0 PCMU/8000..a=rtpmap:101 telephone-event/8000..                                                                       
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700
  " <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.1
  68.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-A
  gent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....                               
#
U 192.168.2.155:5061 -> 192.168.2.105:5060
  PRACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKcadd.d002a195.0..Via: SIP/2
  .0/UDP 192.168.2.116:5060;branch=z9hG4bKc7067cd423E86125..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..T
  o: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 2 PRACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168
  .2.116..Contact: <sip:2700@192.168.2.116:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..RAck: 8193 1 INV
  ITE..Max-Forwards: 69..Content-Length: 0....                                                                            
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKcadd.d002a195.0..Via: SIP/2.0/UDP 192.168.2.116:5060;b
  ranch=z9hG4bKc7067cd423E86125..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;
  user=phone>;tag=333F338B-7C48F4F2..CSeq: 2 PRACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@
  192.168.2.105:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Length: 0....                      
#
U 192.168.2.155:5061 -> 192.168.2.105:5060
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKe74c7e5e2752B2BF..Via: SIP/2.
  0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To
  : <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.
  116..Contact: <sip:2700@192.168.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY,
   PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 69..Content-Length: 0....  
#
U 192.168.2.155:5061 -> 192.168.2.105:5060
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKe74c7e5e2752B2BF..Via: SIP/2.
  0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To
  : <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.
  116..Contact: <sip:2700@192.168.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY,
   PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 69..Content-Length: 0....  
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>
  ;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6
  -953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..
  Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSou
  ndPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: application/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614335 I
  N IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192.168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap
  :0 PCMU/8000..a=rtpmap:101 telephone-event/8000..                                                                       
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700
  " <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.1
  68.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-A
  gent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....                               
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  BYE sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK301b268831945BF9..From: "2700
  " <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 3 BYE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.1
  68.2.116:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....         
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  BYE sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK301b268831945BF9..From: "2700
  " <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 3 BYE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.1
  68.2.116:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....         
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  BYE sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK301b268831945BF9..From: "2700
  " <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 3 BYE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.1
  68.2.116:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....         
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  BYE sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK301b268831945BF9..From: "2700
  " <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 3 BYE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.1
  68.2.116:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....         
#
U 192.168.2.155:5061 -> 192.168.2.105:5060
  PRACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKcadd.d002a195.0..Via: SIP/2
  .0/UDP 192.168.2.116:5060;branch=z9hG4bKc7067cd423E86125..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..T
  o: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 2 PRACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168
  .2.116..Contact: <sip:2700@192.168.2.116:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..RAck: 8193 1 INV
  ITE..Max-Forwards: 69..Content-Length: 0....                                                                            
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKcadd.d002a195.0..Via: SIP/2.0/UDP 192.168.2.116:5060;b
  ranch=z9hG4bKc7067cd423E86125..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;
  user=phone>;tag=333F338B-7C48F4F2..CSeq: 2 PRACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@
  192.168.2.105:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Length: 0....                      
#
U 192.168.2.155:5061 -> 192.168.2.105:5060
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKe74c7e5e2752B2BF..Via: SIP/2.
  0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To
  : <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.
  116..Contact: <sip:2700@192.168.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY,
   PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 69..Content-Length: 0....  
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  BYE sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK301b268831945BF9..From: "2700
  " <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 3 BYE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.1
  68.2.116:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....         
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>
  ;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6
  -953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..
  Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSou
  ndPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: application/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614335 I
  N IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192.168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap
  :0 PCMU/8000..a=rtpmap:101 telephone-event/8000..                                                                       
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700
  " <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.1
  68.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-A
  gent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....                               
#
U 192.168.2.155:5061 -> 192.168.2.105:5060
  PRACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKcadd.d002a195.0..Via: SIP/2
  .0/UDP 192.168.2.116:5060;branch=z9hG4bKc7067cd423E86125..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..T
  o: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 2 PRACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168
  .2.116..Contact: <sip:2700@192.168.2.116:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..RAck: 8193 1 INV
  ITE..Max-Forwards: 69..Content-Length: 0....                                                                            
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKcadd.d002a195.0..Via: SIP/2.0/UDP 192.168.2.116:5060;b
  ranch=z9hG4bKc7067cd423E86125..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;
  user=phone>;tag=333F338B-7C48F4F2..CSeq: 2 PRACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@
  192.168.2.105:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Length: 0....                      
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  BYE sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK301b268831945BF9..From: "2700
  " <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 3 BYE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.1
  68.2.116:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....         
#
U 192.168.2.155:5061 -> 192.168.2.105:5060
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKe74c7e5e2752B2BF..Via: SIP/2.
  0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To
  : <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.
  116..Contact: <sip:2700@192.168.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY,
   PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 69..Content-Length: 0....  
#
U 192.168.2.155:5061 -> 192.168.2.105:5060
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKe74c7e5e2752B2BF..Via: SIP/2.
  0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To
  : <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.
  116..Contact: <sip:2700@192.168.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY,
   PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 69..Content-Length: 0....  
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  BYE sip:2700@192.168.2.116:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.105:5060;branch=z9hG4bK4ca052ecE19AB955..From: <sip:
  2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..To: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 1 BYE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.1
  68.2.105:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....         
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  BYE sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK301b268831945BF9..From: "2700
  " <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 3 BYE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.1
  68.2.116:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....         
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  BYE sip:2700@192.168.2.116:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.105:5060;branch=z9hG4bK4ca052ecE19AB955..From: <sip:
  2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..To: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 1 BYE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.1
  68.2.105:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....         
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  BYE sip:2700@192.168.2.116:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.105:5060;branch=z9hG4bK4ca052ecE19AB955..From: <sip:
  2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..To: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 1 BYE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.1
  68.2.105:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....         
#
U 192.168.2.155:5061 -> 192.168.2.105:5060
  PRACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKcadd.d002a195.0..Via: SIP/2
  .0/UDP 192.168.2.116:5060;branch=z9hG4bKc7067cd423E86125..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..T
  o: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 2 PRACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168
  .2.116..Contact: <sip:2700@192.168.2.116:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..RAck: 8193 1 INV
  ITE..Max-Forwards: 69..Content-Length: 0....                                                                            
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 500 Internal Server Error..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKcadd.d002a195.0..Via: SIP/2.0/UDP 1
  92.168.2.116:5060;branch=z9hG4bKc7067cd423E86125..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:
  2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 2 PRACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..
  Contact: <sip:2600@192.168.2.105:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Length: 0....   
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  BYE sip:2700@192.168.2.116:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.105:5060;branch=z9hG4bK4ca052ecE19AB955..From: <sip:
  2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..To: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 1 BYE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.1
  68.2.105:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....         
#
U 192.168.2.155:5061 -> 192.168.2.105:5060
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKe74c7e5e2752B2BF..Via: SIP/2.
  0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To
  : <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.
  116..Contact: <sip:2700@192.168.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY,
   PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 69..Content-Length: 0....  
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>
  ;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6
  -953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..
  Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSou
  ndPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: application/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614335 I
  N IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192.168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap
  :0 PCMU/8000..a=rtpmap:101 telephone-event/8000..                                                                       
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700
  " <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.1
  68.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-A
  gent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....                               
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>
  ;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6
  -953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..
  Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSou
  ndPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: application/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614336 I
  N IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192.168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap
  :0 PCMU/8000..a=rtpmap:101 telephone-event/8000..                                                                       
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700
  " <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.1
  68.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-A
  gent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....                               
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  BYE sip:2700@192.168.2.116:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.105:5060;branch=z9hG4bK4ca052ecE19AB955..From: <sip:
  2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..To: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 1 BYE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.1
  68.2.105:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....         
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  BYE sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK301b268831945BF9..From: "2700
  " <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 3 BYE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.1
  68.2.116:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....         
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>
  ;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6
  -953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..
  Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSou
  ndPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: application/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614336 I
  N IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192.168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap
  :0 PCMU/8000..a=rtpmap:101 telephone-event/8000..                                                                       
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700
  " <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.1
  68.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-A
  gent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....                               
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 408 Request Timeout..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKc7067cd423E86125..From: "2700" <sip:2700@
  192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 2 PRACK..Call
  -ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Server: OpenSER (1.3.0-notls (i386/linux))..Content-Length: 0....        
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  BYE sip:2700@192.168.2.116:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.105:5060;branch=z9hG4bK4ca052ecE19AB955..From: <sip:
  2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..To: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 1 BYE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.1
  68.2.105:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....         
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  BYE sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK301b268831945BF9..From: "2700
  " <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 3 BYE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.1
  68.2.116:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....         
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>
  ;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6
  -953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..
  Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSou
  ndPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: application/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614337 I
  N IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192.168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap
  :0 PCMU/8000..a=rtpmap:101 telephone-event/8000..                                                                       
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700
  " <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.1
  68.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-A
  gent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....                               
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>
  ;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6
  -953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..
  Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSou
  ndPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: application/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614338 I
  N IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192.168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap
  :0 PCMU/8000..a=rtpmap:101 telephone-event/8000..                                                                       
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700
  " <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.1
  68.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-A
  gent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....                               
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>
  ;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6
  -953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..
  Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSou
  ndPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: application/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614339 I
  N IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192.168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap
  :0 PCMU/8000..a=rtpmap:101 telephone-event/8000..                                                                       
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700
  " <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.1
  68.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-A
  gent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....                               
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  BYE sip:2700@192.168.2.116:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.105:5060;branch=z9hG4bK4ca052ecE19AB955..From: <sip:
  2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..To: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 1 BYE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.1
  68.2.105:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....         
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  BYE sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK301b268831945BF9..From: "2700
  " <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 3 BYE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.1
  68.2.116:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....         
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  BYE sip:2700@192.168.2.116:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.105:5060;branch=z9hG4bK4ca052ecE19AB955..From: <sip:
  2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..To: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 1 BYE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.1
  68.2.105:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....         
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  BYE sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK301b268831945BF9..From: "2700
  " <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 3 BYE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.1
  68.2.116:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....         
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>
  ;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6
  -953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..
  Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSou
  ndPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: application/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614340 I
  N IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192.168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap
  :0 PCMU/8000..a=rtpmap:101 telephone-event/8000..                                                                       
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700
  " <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.1
  68.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-A
  gent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....                               
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>
  ;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6
  -953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..
  Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSou
  ndPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: application/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614341 I
  N IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192.168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap
  :0 PCMU/8000..a=rtpmap:101 telephone-event/8000..                                                                       
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700
  " <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.1
  68.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-A
  gent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....                               
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>
  ;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6
  -953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..
  Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSou
  ndPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: application/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614342 I
  N IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192.168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap
  :0 PCMU/8000..a=rtpmap:101 telephone-event/8000..                                                                       
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700
  " <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.1
  68.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-A
  gent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....                               
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  BYE sip:2700@192.168.2.116:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.105:5060;branch=z9hG4bK4ca052ecE19AB955..From: <sip:
  2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..To: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 1 BYE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.1
  68.2.105:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....         
#
U 192.168.2.155:5061 -> 192.168.2.105:5060
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKe74c7e5e2752B2BF..Via: SIP/2.
  0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To
  : <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.
  116..Contact: <sip:2700@192.168.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY,
   PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 69..Content-Length: 0....  
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  BYE sip:2700@192.168.2.116:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.105:5060;branch=z9hG4bK4ca052ecE19AB955..From: <sip:
  2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..To: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 1 BYE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.1
  68.2.105:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....         
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>
  ;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6
  -953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..
  Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSou
  ndPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: application/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614342 I
  N IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192.168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap
  :0 PCMU/8000..a=rtpmap:101 telephone-event/8000..                                                                       
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700
  " <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.1
  68.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-A
  gent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....                               
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKc7067cd423E86125..From: "2700" <sip:2700@192.168.2.155
  >;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 2 PRACK..Call-ID: 2218dbf6
  -953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.168.2.105:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.
  0.0.0258..Content-Length: 0....                                                                                         
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>
  ;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6
  -953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..
  Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSou
  ndPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: application/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614342 I
  N IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192.168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap
  :0 PCMU/8000..a=rtpmap:101 telephone-event/8000..                                                                       
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700
  " <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.1
  68.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-A
  gent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....                               
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>
  ;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6
  -953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..
  Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSou
  ndPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: application/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614342 I
  N IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192.168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap
  :0 PCMU/8000..a=rtpmap:101 telephone-event/8000..                                                                       
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700
  " <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.1
  68.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-A
  gent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....                               
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  BYE sip:2700@192.168.2.116:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.105:5060;branch=z9hG4bK4ca052ecE19AB955..From: <sip:
  2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..To: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 1 BYE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.1
  68.2.105:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....         
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKc7067cd423E86125..From: "2700" <sip:2700@192.168.2.155
  >;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 2 PRACK..Call-ID: 2218dbf6
  -953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.168.2.105:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.
  0.0.0258..Content-Length: 0....                                                                                         
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>
  ;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6
  -953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..
  Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSou
  ndPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: application/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614342 I
  N IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192.168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap
  :0 PCMU/8000..a=rtpmap:101 telephone-event/8000..                                                                       
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700
  " <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.1
  68.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-A
  gent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....                               
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKc7067cd423E86125..From: "2700" <sip:2700@192.168.2.155
  >;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 2 PRACK..Call-ID: 2218dbf6
  -953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.168.2.105:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.
  0.0.0258..Content-Length: 0....                                                                                         
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK8c710ecF4445EFD..From: "2700" <sip:2700@192.168.2.155>
  ;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 INVITE..Call-ID: 2218dbf6
  -953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.168.2.105:5060>..Record-Route: <sip:192.168.2.155:5061;lr=on>..
  Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-Agent: PolycomSou
  ndPointIP-SPIP_501-UA/3.0.0.0258..Content-Type: application/sdp..Content-Length: 201....v=0..o=- 1203614335 1203614342 I
  N IP4 192.168.2.105..s=Polycom IP Phone..c=IN IP4 192.168.2.105..t=0 0..m=audio 2226 RTP/AVP 0 101..a=sendrecv..a=rtpmap
  :0 PCMU/8000..a=rtpmap:101 telephone-event/8000..                                                                       
#
U 192.168.2.116:5060 -> 192.168.2.155:5061
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700
  " <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..Route: 
  <sip:192.168.2.155:5061;lr=on>..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.116..Contact: <sip:2700@192.1
  68.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER..User-A
  gent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 70..Content-Length: 0....                               
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKc7067cd423E86125..From: "2700" <sip:2700@192.168.2.155
  >;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 2 PRACK..Call-ID: 2218dbf6
  -953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.168.2.105:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.
  0.0.0258..Content-Length: 0....                                                                                         
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKc7067cd423E86125..From: "2700" <sip:2700@192.168.2.155
  >;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 2 PRACK..Call-ID: 2218dbf6
  -953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.168.2.105:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.
  0.0.0258..Content-Length: 0....                                                                                         
#
U 192.168.2.155:5061 -> 192.168.2.105:5060
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKe74c7e5e2752B2BF..Via: SIP/2.
  0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To
  : <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.
  116..Contact: <sip:2700@192.168.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY,
   PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 69..Content-Length: 0....  
#
U 192.168.2.155:5061 -> 192.168.2.105:5060
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKe74c7e5e2752B2BF..Via: SIP/2.
  0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To
  : <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.
  116..Contact: <sip:2700@192.168.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY,
   PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 69..Content-Length: 0....  
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKc7067cd423E86125..From: "2700" <sip:2700@192.168.2.155
  >;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 2 PRACK..Call-ID: 2218dbf6
  -953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.168.2.105:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.
  0.0.0258..Content-Length: 0....                                                                                         
#
U 192.168.2.155:5061 -> 192.168.2.105:5060
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKe74c7e5e2752B2BF..Via: SIP/2.
  0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To
  : <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.
  116..Contact: <sip:2700@192.168.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY,
   PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 69..Content-Length: 0....  
#
U 192.168.2.155:5061 -> 192.168.2.105:5060
  BYE sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKdadd.7b96c7b6.0..Via: SIP/2.0
  /UDP 192.168.2.116:5060;branch=z9hG4bK301b268831945BF9..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To:
   <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 3 BYE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.1
  16..Contact: <sip:2700@192.168.2.116:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 69..Co
  ntent-Length: 0....                                                                                                     
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 481 Call Leg/Transaction Does Not Exist..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKdadd.7b96c7b6.0..Via:
   SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK301b268831945BF9..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527
  CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 3 BYE..Call-ID: 2218dbf6-953065a0-8f385617@192
  .168.2.116..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Length: 0....                               
#
U 192.168.2.155:5061 -> 192.168.2.105:5060
  BYE sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKdadd.7b96c7b6.0..Via: SIP/2.0
  /UDP 192.168.2.116:5060;branch=z9hG4bK301b268831945BF9..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To:
   <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 3 BYE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.1
  16..Contact: <sip:2700@192.168.2.116:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 69..Co
  ntent-Length: 0....                                                                                                     
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 481 Call Leg/Transaction Does Not Exist..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKdadd.7b96c7b6.0..Via:
   SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK301b268831945BF9..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527
  CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 3 BYE..Call-ID: 2218dbf6-953065a0-8f385617@192
  .168.2.116..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Length: 0....                               
#
U 192.168.2.155:5061 -> 192.168.2.105:5060
  BYE sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKdadd.7b96c7b6.0..Via: SIP/2.0
  /UDP 192.168.2.116:5060;branch=z9hG4bK301b268831945BF9..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To:
   <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 3 BYE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.1
  16..Contact: <sip:2700@192.168.2.116:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 69..Co
  ntent-Length: 0....                                                                                                     
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 481 Call Leg/Transaction Does Not Exist..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKdadd.7b96c7b6.0..Via:
   SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK301b268831945BF9..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527
  CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 3 BYE..Call-ID: 2218dbf6-953065a0-8f385617@192
  .168.2.116..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Length: 0....                               
#
U 192.168.2.155:5061 -> 192.168.2.105:5060
  BYE sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKdadd.7b96c7b6.0..Via: SIP/2.0
  /UDP 192.168.2.116:5060;branch=z9hG4bK301b268831945BF9..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To:
   <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 3 BYE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.1
  16..Contact: <sip:2700@192.168.2.116:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 69..Co
  ntent-Length: 0....                                                                                                     
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 481 Call Leg/Transaction Does Not Exist..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKdadd.7b96c7b6.0..Via:
   SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK301b268831945BF9..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527
  CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 3 BYE..Call-ID: 2218dbf6-953065a0-8f385617@192
  .168.2.116..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Length: 0....                               
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKc7067cd423E86125..From: "2700" <sip:2700@192.168.2.155
  >;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 2 PRACK..Call-ID: 2218dbf6
  -953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.168.2.105:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.
  0.0.0258..Content-Length: 0....                                                                                         
#
U 192.168.2.155:5061 -> 192.168.2.105:5060
  BYE sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKdadd.7b96c7b6.0..Via: SIP/2.0
  /UDP 192.168.2.116:5060;branch=z9hG4bK301b268831945BF9..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To:
   <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 3 BYE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.1
  16..Contact: <sip:2700@192.168.2.116:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 69..Co
  ntent-Length: 0....                                                                                                     
#
U 192.168.2.105:5060 -> 192.168.2.155:5061
  SIP/2.0 481 Call Leg/Transaction Does Not Exist..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKdadd.7b96c7b6.0..Via:
   SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bK301b268831945BF9..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527
  CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 3 BYE..Call-ID: 2218dbf6-953065a0-8f385617@192
  .168.2.116..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Content-Length: 0....                               
#
U 192.168.2.155:5061 -> 192.168.2.105:5060
  ACK sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKe74c7e5e2752B2BF..Via: SIP/2.
  0/UDP 192.168.2.116:5060;branch=z9hG4bKe74c7e5e2752B2BF..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To
  : <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 1 ACK..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.
  116..Contact: <sip:2700@192.168.2.116:5060>..Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY,
   PRACK, UPDATE, REFER..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 69..Content-Length: 0....  
#
U 192.168.2.155:5061 -> 192.168.2.116:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.116:5060;branch=z9hG4bKc7067cd423E86125..From: "2700" <sip:2700@192.168.2.155
  >;tag=427477EA-7A527CD1..To: <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 2 PRACK..Call-ID: 2218dbf6
  -953065a0-8f385617@192.168.2.116..Contact: <sip:2600@192.168.2.105:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.
  0.0.0258..Content-Length: 0....                                                                                         
#
U 192.168.2.155:5061 -> 192.168.2.105:5060
  BYE sip:2600@192.168.2.105:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.2.155:5061;branch=z9hG4bKdadd.7b96c7b6.0..Via: SIP/2.0
  /UDP 192.168.2.116:5060;branch=z9hG4bK301b268831945BF9..From: "2700" <sip:2700@192.168.2.155>;tag=427477EA-7A527CD1..To:
   <sip:2600@192.168.2.155;user=phone>;tag=333F338B-7C48F4F2..CSeq: 3 BYE..Call-ID: 2218dbf6-953065a0-8f385617@192.168.2.1
  16..Contact: <sip:2700@192.168.2.116:5060>..User-Agent: PolycomSoundPointIP-SPIP_501-UA/3.0.0.0258..Max-Forwards: 69..Co
  ntent-Length: 0....                                                                                                     
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