here is a log from the server log with a call out with no audio
[CM104001] Call(37): Ln:10000@lines hung up call; cause: BYE; from IP:192.168.123.201
13:29:40.509 CallLegImpl:

nConnected [CM103001] Call(37): Created audio channel for Ln:10000@lines (192.168.123.201:5016) with Media Server (192.168.123.200:9002)
13:29:40.493 StratInOut:

nConnected [CM104005] Call(37): Setup completed for call from Ext.200 to Ln:10000@lines
13:29:40.493 CallLegImpl:

nConnected [CM103001] Call(37): Created audio channel for Ext.200 (192.168.123.124:5006) with Media Server (192.168.123.200:7124)
13:29:40.493 CallConf:

nProvisional [CM103003] Call(37): Ln:10000@lines is ringing
13:29:37.399 MediaServerReporting::STUN [MS101003] Call(37) Ln:10000@lines: Possible firewall problem. Address mapping failed on STUN server 192.168.123.200:3478 for local address ":9002"
13:29:33.852 CallConf:

nIncoming [CM103002] Call(37): Incoming call from 200 (Ext.200) to sip:
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