[asterisk-users] echo cancellation for sip phones
alanslists at gmail.com
Thu Nov 20 02:31:59 CST 2008
Pezhman Lali wrote:
> the sip phones that registered, in to the asterisk 1.4.x have the echo
> in their callings to pstn.
> how this echo can be canceled?
Hmmmm - you don't give much to go on...
What is the connection to the PSTN (i.e. what kind of card, interface
The echo is almost certainly coming from that area rather than the SIP
If you have an analogue PSTN card without h/w echo cancellation, I would
suggest trying the OSLEC echo canceller. This is[was?] not installed by
default with the zaptel drivers.
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