No outbound voice when making calls
Submitted by cpw..@..ily.ca
Version data: Empathy 3.12.11. Gstreamer 1.6.1. Pulseaudio 7.0.2.
There is no outbound voice (from computer to telephony system) when making or receiving calls.
Other clients work successfully for the same parameters, which tends to rule out other causes of error.
The problem seems to have come about with an upgrade to gstreamer 1.6 from 1.4.5. I tried (and failed) to rollback to 1.4.5 to test this hypothesis. Gstreamer is a very difficult product to rollback, sadly.
Dist: Debian. Reported the same issue at debian: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=801904 but it hasn't been looked at as far as I can tell.
Happy to try anything to diagnose the issue. I've tried debugging the gstreamer pipeline, but it seems to be very challenging to figure out where the outbound voice is getting lost, with the debugging to hand.
Looking at the network traces to my SIP server, it seems clear that I'm sending only silence RTP packets from my computer to my SIP server, so I think that the voice is getting lost in the pipeline. I've tried to make simple pipelines, and they all seem to work.