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Sep 20 15:34:04 DEBUG[19821]: Requesting Hangup because the busy tone was detected on channel Zap/2-1
Sep 20 15:34:04 DEBUG[19821]: Got a FRAME_CONTROL (5) frame on channel Zap/2-1
Sep 20 15:34:04 DEBUG[19821]: Bridge stops bridging channels SIP/1536-6079 and Zap/2-1
Sep 20 15:34:04 DEBUG[19821]: Set option AUDIO MODE, value: ON(1) on Zap/2-1
Sep 20 15:34:04 DEBUG[19821]: Hangup: channel: 2 index = 0, normal = 17, callwait = -1, thirdcall = -1
Sep 20 15:34:04 DEBUG[19821]: Not yet hungup...  Calling hangup once with icause, and clearing call
Sep 20 15:34:04 DEBUG[19821]: disabled echo cancellation on channel 2
Sep 20 15:34:04 DEBUG[19821]: Set option TDD MODE, value: OFF(0) on Zap/2-1
Sep 20 15:34:04 DEBUG[19821]: Updated conferencing on 2, with 0 conference users
Sep 20 15:34:04 DEBUG[19821]: Set option AUDIO MODE, value: OFF(0) on Zap/2-1
Sep 20 15:34:04 DEBUG[19821]: disabled echo cancellation on channel 2
Sep 20 15:34:04 VERBOSE[19821]:     -- Hungup 'Zap/2-1'
Sep 20 15:34:04 DEBUG[19821]: Exiting with DIALSTATUS=ANSWER.
Sep 20 15:34:04 VERBOSE[19821]:   == Spawn extension (local, 14254448149, 2) exited non-zero on 'SIP/1536-6079'
Sep 20 15:34:04 DEBUG[19821]: update_user_counter(1536) - decrement inUse counter
Sep 20 15:34:04 DEBUG[19821]: Stopping retransmission on '3c2bd76915f9-xvbwhbqpuwfh@snom360' of Request 102: Found
Sep 20 15:34:04 DEBUG[19821]: Stopping retransmission on '0c1d5e363c2749ce58c38e702adfb4c1@10.10.50.1' of Request 102: Found
Sep 20 15:34:04 DEBUG[19821]: Stopping retransmission on '575725d01d08f0ea66bd46dd19777eec@10.10.50.1' of Request 102: Found