On January 29, 2005 12:31 pm, Matt Schulte wrote: > We are a voip terminating company, we're using Channelbank with FXS > modules, Rhino, CAC, etc.. What we're wondering is, is how to would you > echo cancel a channelbank. Of course we're realizing that cancel'ing on > the T1 (on Ast) does no good (we think?) because the analog conversion > is at the channelbank. Suggestions? Lowering the gain helps but we're > looking for a real solution to this. Thanks. > > <PSTN?> -- <VOIP Network> -- <Asterisk> -(T1)- <channel bank> -- > <analog> > ^echo heard
If the echo is being heard on the far side then you are generating it at your hybrid. Your diagram is not clear since it was wrapped. I have used the Adit600 and Access Bank 1s with great success -- they do not generate echo (i.e. nobody we've called has heard echo) -- we do, however, hear echo from time to time, even on our PRI. Asterisk's echo cancellation is either getting disabled accidentally or it is not working worth a damn. :-( You can use Tellabs echo cancellation units on T1 and PRI -- these are carrier-grade hardware echo cancellers. I haven't any experience with them yet (waiting for mine to arrive). -A. _______________________________________________ Asterisk-Users mailing list [email protected] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
