The devices are using 20ms G722. The strange thing is that if the call starts out as G722, everything works totally fine. The problem arises when the phone has G722 first in its prefered codec, the FS profile is set to generous, and a call starts out as PCMU. The audio is fine until someone places a call on hold. After taking a call off hold, when the FS profile is set to generous, FS honors the Polycoms preference for G722 and then tries to switch to G722. At this point there is no audio. If the sophia profile is set to greedy, as expected Freeswitch does not allow the switch to G722 and there are no audio problems. This only happens when a call starts out in something other than G722 and then tries to switch. I.e. client ---G722---> FS ---PCMU---> Provider works and client ---G722---> FS ---G722---> client works but provider ---PCMU---> FS ---PCMU---> client and then a call is placed on hold and resumed a G722 does not. Spencer On Feb 28, 2011, at 3:34 PM, peely wrote:
What ptime is your device offering? FreeSWITCH only supports 20ms G722, I get clipped audio for example when G722 30ms is offered on Snoms, but they work perfectly when I force them to 20ms.
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