[Bug 578009] [NEW] sip calls garbled (PCMu/a)

[Eric Drechsel]

Public bug reported:

Binary package hint: empathy

I use Gizmo (sipphone.com) with Google Voice and a SIP client on my
laptop to place/receive voice calls on the cheap.

Twinkle is my benchmark SIP client, since I've found it to be very
reliable compared to other clients available in the Ubuntu repos,
especially "on the go" connected to random NATed wireless access points.

I would like to use Telepathy/Farsight/Empathy for SIP calls. In
previous releases I had experienced registration errors, but now the
registration seems to work properly.

Unfortunately, the audio during calls is garbled (syllables seem to
appear out of order, drop etc), while in Twinkle with the exact same
setup, audio is solid.

The empathy log and twinkle log both show the codec negotiated as
PCMU/A.

I have experienced this in many network environments and on several
different computers, and I believe it is a problem for everyone.
Currently I am on a campus network which gives me a public IP, so it is
not specifically an issue with NAT.

Can other people report their success/failure with SIP calls? Please
include the logs (from Help > Debug) for Empathy and sofiasip.

** Affects: empathy (Ubuntu)
     Importance: Undecided
         Status: New

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sip calls garbled (PCMu/a)
https://bugs.launchpad.net/bugs/578009
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