asterisk Sip.conf:
Allow=alaw

but Sound quality might be degraded by network issues (packet loss, delay)
or Asterisk server limitations (CPU) etc

Paulo
On Thu, Oct 9, 2008 at 1:16 PM, Karsten Schubotz <[EMAIL PROTECTED]> wrote:

> Hi all,
>
> I have a question concerning negotiation of audio codec.
> I'm using codec_pcmapcmu included in sipXtapi. If I make a direct
> connection between two softphones using sipxtapi, the negotiated codec is
> PCMA. The voice quality is good! But by making a connection over an Asterisk
> server, the codec PCMU was negotiated. The voice quality is really bad. It
> sounds interruptedly, and the pitch of the voice seems to vary irregularly.
> Something didn't match. Does someone have an Idea what the cause could be?
> Perhaps I can influence the codec negotiation, so the PCMA codec could be
> used-> is it possible?
> Thank you very much for a solution!
>
> Regards
> Karsten
>
> --
> Psssst! Schon vom neuen GMX MultiMessenger gehört? Der kann`s mit allen:
> http://www.gmx.net/de/go/multimessenger
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