[Asterisk-Users] Re: Random Echo

[Kekin Dand]

TC,

Appreciated your help and will try out TelLabs card and see if we can get
rid of echo. 

Yesterday I did some changes in TX and RX attenuation setting on Channel
bank and it reduces the echo, but it is not yet vanished as we wanted.

Any way Thanks.

Regards,
KD


Date: Wed, 17 Mar 2004 19:47:16 -0800
From: TC <trclark at shaw.ca>
Subject: Re: [Asterisk-Users] Re: Random Echo
To: asterisk-users at lists.digium.com
Reply-To: asterisk-users at lists.digium.com

>I did some google search but
>didn't find any details, about how to configure between Adtran 750 and 
>T100P. If you have already done, please give us some details.

not sure what level of dtl you want its quite straight fwd
It varies depending on the chasis but in general
there are T1 in and T1 out DB-15's for each T1 circuit you want to echo
cancel.

A straight T1 rj-45 cable goes to the channel bank other end is db-15 in to
Tellab then a T1 X over goes from the Tellab db-15 out to the T100p card

Then there are external Mode and Chan switchs that allow you to configure
the T1 circuit  (the line bld, framing, and coding/signaling), and then
other setting to allow channels FXO/FXS LS, GS and enable echo cancel
channel by channel, I do it for all fxs/fxo ports and turn ALL * echo cancel
in zapata OFF..