[Freeswitch-users] polycom one-way audio problem

[Matthew Kaufman]

I have two Polycom phones (one 550 and one 650) successfully registered 
to the switch. If I call from either extension to the other and answer, 
audio flows from the calling party to the called party, but audio does 
not flow from the called party back to the calling party. Even more 
strange, the called party does not answer, then when the call is sent to 
voicemail, the calling party *also* does not hear any of the voicemail 
greeting, though they are recorded successfully. Calling the voicemail 
box directly from either phone *does* work, and the calling party can 
hear the prompts just fine in that case.

There is no NAT between the phones and FreeSWITCH.

Suggestions?

Matthew Kaufman
matthew at matthew.at