> >> I put a Tellabs 64ms echo canceller into my facility this weekend and > >> am praying that it removes are echo problem. If it does, I plan on > >> making it a standard on my Asterisk installs that have a channel bank > >> or T1. > >> > > > > Well, the day is almost over here and not one echo reported today. > > Very impressive! I had 5 more cards delivered today. > > > > Just as a follow up to this. > > I purchased 5 Tellabs 64ms cards on ebaY. The very 1st card that I put > into production worked quite nicely (Little residual echo, but very much > an improvement). I was on site this weekend and figured I would test > out the remaining cards, one at a time to confirm they were in working > condition. This upcoming Monday, I had many complaints of echo. Went > back Tuesday morning and went over the settings of the previous card > compared to this replacement. I turns out that only 1 of the 5 cards > had option 38 available (Send Side Echo Cencellation). > > So, if you are in the market for one of these cards because of local > echo, you'll want to confirm with the vendor of 'Send side Echo > Cancellation', or at least ask him to check for option 38 after powering > up. Out of the 5 purchased, only 1 had it.
I've never used a Tellabs before, but might try changing the input and output analog lines around (eg, reverse it). Don't have a clue if that would really work. _______________________________________________ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
