The echo statements in zapata.conf apply "only" to zap channels; nothing
at all to do with sip channels.
The echotraining=800 statement essentially sends a pulse 800
milliseconds after a pstn line has been grabbed by asterisk, and
measures the reflected energy. That value is used to preload the echo
canceller (on zap pstn calls) allowing the echo canceller to train quicker.
steve wrote:
I thought the same thing before I made my reply but zapata.conf seems to
be the
only config file that deals with echo at all. From what I understand of
'echotrain'
is that at the beginning of the call it sends a short signal out that
measure echo
in an attempt to try and cancel it. I was wondering if you tried using
it and if so was it of any help?
Sincerely,
Steve
But is Zapata.conf even in the picture when all calls go through a
SIP-provider, since the calls are not being routed through a ZAP channel?
Regards,
Bjorn
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Fra: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] På vegne av steve
Sendt: 22. mars 2006 23:11
Til: [email protected]
Emne: [Asterisk-Users] re: Sound issues on SIP-SIP calls
When you hear echo its actually being caused by the other phone. check
your zapata.conf file and see if echotraining=yes.
Echo can be caused by lots of things so this is just a starting point.
For several months now we’ve been experiencing a really strange problem
with
sound which best can be explained as choppy/stuttery, and with a touch of
echo on top. Basically, parts of a conversation might be choppy, but often
combined with some echo as well. The sound problem can only be heard by us,
not by the other party. But this is the strange part:
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