[Asterisk-Users] Adit 600 and echo

[Doug Lytle]

I'm having issues with echo.

My setup is Polycom IP501 phones connected to an Adit 600 via T100P.  13 
Lines going to the Adit.

All echo so far is on the local side (Employees hears own voice, but 
only on some calls).

Watching the channel with ztmonitor, I notice that TXGAIN is pegged out 
most of the time.  RXGAIN is anywhere between 45 and 60%.

Is it safe to assume that playing around with the TX/RX gains on the 
channel bank will not do anything and this needs to be resolved via the 
TX gains within Asterisk?

I was able to set the TXGAIN to -6.3 and it did help some, but if I try 
-6.4 or more on any of the channels, I can no longer here audio when 
calling into the facility. 

Any suggestions?

Doug