[Linphone-users] Mic input not forwarded on outgoing call

[Iain Mott]

Hello,

I have Linphone installed on a Linux machine running Asterisk as well as 
Linphone apps on several Android phones and all phones are registered 
with the Asterisk server. While the Android apps are all working well, 
connecting with each other and with outside lines via an external SIP 
service (registered in Asterisk), the Linux-based app fails to transmit 
the audio from a microphone to the receiving devices when it makes a call.

It's not an ALSA problem. The mic input is actually registering 
Linphone's GUI when a call is made from the Linux-based app to any other 
phone, showing up in the level meters.

Also strange is that when a peer SIP phone calls in to the linux-based 
app, the mic (on Linux) works fine and can be heard on the caller's phone.

Can anyone please suggest what might be happening?

Thanks,

Iain