[Asterisk-Users] Echo cancellation over satellite link

Randall Prentice rjp0 at paradise.net.nz
Tue Dec 6 03:04:45 MST 2005


2 Things...  You probably know anyway...
 
Early echo cancel for satellite just used half duplex switching as a way to
get around the echo (This led to the echo suppess tone being used for faxes
and modems to allow full duplex).
 
>From my Telephony days the echo comes mostly from a mismatch in the hybrid
at the other end of the link from where the echo is heard.
 
Regards
Randall Prentice

Just wondering, is the echo canceller in the TE411P capable of cancelling
the echo caused by the delay over satellite link (i.e. approx 400 ms delay)?

 
Does anyone have any success story to share? 
 
I'm kinda stuck with a really2 annoying echo... adjusting the gain didn't
help... and what should my zapata.conf look like for effective echo
cancellation?
 
Thanks in advance ^_^

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20051206/9aa22494/attachment.htm


More information about the asterisk-users mailing list