H323 call dropped on more than 2 simultanously calls

;; Configuration file of OpenH323 channel driver;;-----------------------------------------; General configuration options; (ports, jitter, GK, ...);-----------------------------------------[general];; Address to bind to for incoming connections.; Default is ALL.;listenAddress=0.0.0.0 		;0.0.0.0;; Port to listen to.; Default value is 1720.;listenPort=1720;;; Configure TCP port range to be used by H.323;tcpStart=10000tcpEnd=20000;; Configure UDP port range to be used by H.323; Note: The port range used by RTP are configured from;       "rtp.conf";udpStart=10000udpEnd=20000;; Enable fast start (yes,no).;fastStart=no;; Enable H.245 tunnelling (yes,no).;h245Tunnelling=no;; Enable early H.245 messages in call SETUP message.;h245inSetup=no;; Enable in-band-DTMF detection. ; (Note: Netmeeting uses in-band DTMFs);inBandDTMF=no;;; Set jitter buffer (in milliseconds, 20...10000).;jitterMin=20jitterMax=100;; Set IP Type-of-Service byte for RTP channels.; Valid values for this option are:;   lowdelay, throughput, reliability, mincost, none;ipTos=none;; Set the maximum number of inbound/outbound/simultaneous; H.323 connections.;outboundMax=12inboundMax=12simultaneousMax=12;; Set the bandwidth limit for H.323 connections.; The value is in Kbps.;;bandwidthLimit=1024;; Set tracing options for the wrapper library and for the; OpenH323 library.; libTraceFile can be 'stdout' or a full path name to the tracefile.; Only trace info for OpenH323 is logged in libTraceFile.;wrapLibTraceLevel=1libTraceLevel=0libTraceFile=stdout;; Disable gatekeeper or specify a gatekeeper.; Valid values for this option are:;   DISABLE,;   DISCOVER,;   <gatekeeper's DNS name>,;   <gatekeeper's ip>,;   GKID:<gatekeeper's id>;;gatekeeper=192.168.1.2gatekeeper=DISABLE;; Set the gatekeeper password;;gatekeeperPassword=secret;; Set the gatekeeper registration timeout;;gatekeeperTTL=600;; Set the mode for sending user-input; Valid values for this option are:;   Q931        -   Q.931 Keypad Information Element;   STRING      -   H.245 string;   TONE        -   H.245 tone;   RFC2833     -   RFC2833;userInputMode=RFC2833;; AMA flags (default, omit, billing, documentation);;amaFlags=defaultamaFlags=billing;; Account code;accountCode=H323;; Set the default context of H.323 calls.;context=oh323-in;context=oh323-ips;-----------------------------------------; Configure H.323 aliases, prefixes and; related ASTERISK's contexts;-----------------------------------------[register];; Aliases/prefixes associated with the default context; defined in section [general].;alias=globalitvision.com;alias=31652;gwprefix=31652;gwprefix=0;; Aliases/prefixes routed in "all-aliases" context.;;context=all-aliases;alias=ASTERISK;alias=666;; Aliases/prefixes routed in "more-aliases" context.;;context=more-aliases;alias=665;; Aliases/prefixes routed in "all-prefixes" context.;;context=all-prefixes;gwprefix=00;gwprefix=01;; Aliases/prefixes routed in "more-stuff" context.;;context=more-stuff;context=oh323-iptoip;context=oh323-sip;alias=testing;gwprefix=0053;-----------------------------------------; Specify and configure CODEC related; options;-----------------------------------------[codecs];; Define the codec list of the channel driver.; Every "codec" option may have a "frames" option; associated with it.; Valid values for the "codec" option are:;   G711U       -   G.711 u-Law;   G711A       -   G.711 A-Law;   G7231       -   G.723.1(6.3k);   G72316K3    -   G.723.1(6.3k);   G72315K3    -   G.723.1(5.3k);   G7231A6K3   -   G.723.1A(6.3k);   G7231A6K3   -   G.723.1A(6.3k);   G726        -   G.726(32k);   G72616K     -   G.726(16k);   G72624K     -   G.726(24k);   G72632K     -   G.726(32k);   G72640K     -   G.726(40k);   G728        -   G.728;   G729        -   G.729;   G729A       -   G.729A;   G729B       -   G.729B;   G729AB      -   G.729AB;   GSM0610     -   GSM 0610;   MSGSM       -   Microsoft GSM Audio Capability;   LPC10       -   LPC-10; Number of frames in RTP packet (if not specified) is 1.;   ;codec=G7231;frames=4;codec=G72315K3;frames=4;codec=G711A;frames=20;codec=G711U;frames=20;codec=GSM0610;frames=4codec=G729frames=2Error on Call Dropped:H.323 call 'ip$216.206.188.206:51313/10146' cleared, reason 4 (Cleared by remote user), established (62 sec)