I am using sip-communicator to make calls to cellular phones throught
a sip voip provider. When I make a call the cellular rings and I can
connect, but there is no audio transmission. But if I use OnDO Sip
Server from Brekeke as the server to which I connect with sip-comm
(configuring to perform upper registration on the provider) everything
goes ok and the sounds is transmitted.
Now, I am testing it with asterisk and I have the same problem.
Do you know which is the problem?
Thank you very much.