I have the same issue as stated above.
I have installed Asterisk@Home, created 2 extensions for 2 SIP Phones.
When I try to call from one to the other, the second phone is ringing (in both ways).
I pick up the phone, and no sound from both !
I have activated voice recording,
and I can get Wav files with my talking inside !
I have used ethereal to check from Asterisk the traffic,
SIP trafic seems allright. G711MU codec is used.
using “Anylize”, I can even recompose the RTP trafic …
Once more, I can hear my talking !
I have activated Asterisk console,
no error message showing up.
Actually, I was using a Swissvoice Phone with firmware SIP v100_b3 …
I tried another SIP Phone … “GrandStream / Budge Tone 100” … and it worked perfectly !
So I suppose, the issue came from the phone … why, I don’t know !
I checked the codecs and everything …
and eveything seemed to be allright !
Anyway, I hope this will help somebody in the same case !