I have a dozen polycom ip 600 phones that are connected to the PSTN with two, digium 4 port fxo cards. I also had a lot of near side echo, but I do not believe that it came from the phones. I was able to get rid of it with these settings in my zapata.conf:
echocancel=yes echocancelwhenbridged=yes echotraining=500 rxgain=8.0 txgain=0.0
The polycoms do have echo canceling hardware buit in, but by default only works on the speakerphone. You can enable it on the handset as well, but in my case, it made no difference because the echo came from the fxo cards.
-Tor
John Bittner wrote:
Hi,
Just install 6 new polycoms at a customer and all of them have a major echo issue. Have asterisk connected to the PSTN via digium 4 port fxo card in a P4 running fedora.
I have tweaked zapata ....ran ztmonitor... just as a test I attached a cisco 7960.... the cisco has no echo problems.
Another issue I came up on is when I enable echo training I no longer can hear any inbound voice.
Does anyone know if there is a setting in the polycom config that will cause
this.
The echo on the phones happen only on my side and only when I speak. The polycoms play back my voice but delayed.
Any help would be appreciated.
Thanks
John Bittner Simlab.net
_______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
_______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
