[Linphone-users] linphone on iPad - RTP ok, but no outgoing sound on outgoing calls

[Marie Fischer]

Hello everybody,

I am trying to setup Linphone iOS 3.16.5 on an iPad 2 (iOS 9.3.5) to connect to 
my Asterisk PBX.

Everything went quite smoothly, I can register, make and receive calls, but for 
outgoing calls the other party gets no sound. Strangely, I see correct RTP logs 
in Asterisk log (RTP streams coming & going both ways), it just seems there is 
no actual audio in the stream. Actually, the other party hears some static / 
white noise, which disappears if I press the mute button in Linphone.

Tested with both in-build microphone and Apple headset, no difference.

Incoming calls work correctly, i.e. have audio both ways.

The same setup works correctly on an iPhone 8 (iOS 11.2.6).

Linphone log file attached.

linphone_log.txt.gz
Description: GNU Zip compressed data

-- 
Thanks,

marie