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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