[Asterisk-Users] Wits end with echo

[Mojo with Horan & Company, LLC]

This pretty much helped me with the rxgains and txgains:

http://lists.digium.com/pipermail/asterisk-users/2004-November/071301.html

you don't use ztmonitor directly to modify the rx and txgains, you just 
use it as a meter to make modifications to the zapata.conf file.

Moj

Jon Reynolds wrote:
> Hello,
> 
> I have an AAH-1.5 with a TMD400P with four lines, 8 Grandstream GXP-2000 
> phones, I am having echo issues on the GXP-2000 side.
> 
> Here is what I have tried so far:
> 
> The server has everything in the bios turned off except what is needed, 
> USB, LPT, Serial etc,etc.
> 
> I have uncommented Echo Suppresion in zconfig.h and shutdown and turned 
> back on the asterisk box.
> 
> I have updated the phones to 1.0.12 firmware, I have echotraining=800, 
> echocancel=yes, echowhenbridged=yes, in my sip.conf file. I am using 
> Mark2 as the echo suppresion and still I have echo.
> 
> All the phones have been wired straight to the cisco 2950 switch and all 
> cables have been tested and found to be good.
> 
> I am completely at a loss at this point as to where to start looking and 
> working to fix the problem. I would like to switch from Mark2 to MG1 but 
> I don't know how I would acomplish that with AAH. I have played with the 
> rx and tx gain but after reading multiple docs on it am still unsure how 
> this would help and how to adjust it using /usr/bin/ztmonitor 1 -v.
> 
> If anybody could point me in a new direction or something else to look 
> at or something more to read that I may have missed I would be very 
> appreciative.
> 
> Thanks for any help,
> 
> Jon
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-- 
Mojo <mojo at horanappraisals.com>
Office Manger, Horan & Company, LLC
(907) 747-6666 x112