>I would like to upgrade to a channel bank, and was wondering if anyone has had any echo issues with other >digium hardware. the t100 connected to a channel bank will not gurantee no echo, but from experience I do have 2 solutions that removed 100% of the echo from my installations
1) CAC ADIT 600 channel bank, 8 port FXO cards with what CAC call adaptive impedance matching I had both a x100 and a t100 and an adtran ta-750 that both produce echo connect to my local PSTN when i tried the ADIT 600 with 8 port FXO connect to my analog line ALL perceived echo vanished, I still had the echo can settings in zaptel turned on 2) Install an Inline T1 hardware echo can between the T100 card and the channel bank T1 interface I took that same adtran ta-750 that gave echo on the analog lines and installed a TellLabs 2572 64ms hardware echo card, turned off all zaptel echo settings, and All perceived echo vanished My personal belief is that the hit and mis echo on the x100/x101 cards is caused by the impedance mismatch between these cards and different Telco lines, the zaptel stuff tries to fix this echo after the fact & the current algorithms will not converge in a sub-second time frame _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users