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I have posted a similar problem earlier on this mailing list with my Asterisk-system + TDM410 + Grandstream telephones.<BR>
But there has not yet been a response to this.<BR>
<BR>
My client is also experiencing a 'simplex' conversation. There seems that audio can only flow 1 one way at the same time.<BR>
<BR>
What I have tried is change the codec on the internal SIP-network from alaw to gsm (so more compression, less bandwidth needed) but problem not yet resolved.<BR>
<BR>
Also I don't know where to begin to look for the problem...<BR>
So, I'm curious for the solution.<BR>
<BR>
Greetingz,<BR>
Jonas.<BR>
<BR>
On Sat, 2009-05-30 at 14:35 -0400, Nathanial A. Byrnes wrote:
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Hello,
I am working on a trixbox based system with a TDM410P connected to 3
phone lines from the CO. The asterisk box is on a full duplex 100Mb LAN
with some polycom and Aastra SIP phones. In general everything works.
the problem I am trying to solve is that if both parties to a call speak
at the same time one of the voices gets cut out such that the talker A
cannot hear what talker B is saying. When talker A stops talking, he/she
can then hear what talker B says. This issue occurs across all the
different phones we have set up. I have played with the OSLEC settings
in the thoughts that the echo cancellation was being a bit ambitious, to
no avail. Any recommendations on how to best troubleshoot / correct this
issue?
Thanks and Regards,
Nate
</PRE>
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