[Asterisk-Users] Long and variable echo

[James Andrewartha]

Hi all,

Yep, I have really bad echo. I've measured it (recording in Asterisk and 
then measuring in Audacity), and it varies from 160ms to 250ms, which is far 
above what normal echo cancellation deals with. Additionally, I don't have 
Zaptel hardware, so I can't use ztmonitor as described in 
http://lists.digium.com/pipermail/asterisk-users/2004-November/071301.html 
to set my gains, not that I know of a milliwat line in Australia anyway. The 
problem has been consistent from 1.0 through CVS to 1.2, and across 
different machines and distributions. Does anyone have any suggestions on 
how I can deal with this? I have had echo cancellation happening, but 
half-duplex speech is not acceptable.

TIA,

-- 
James Andrewartha
Systems Administrator
Data Analysis Australia Pty Ltd