Anthony Chapellier wrote: > Alan Lord a écrit : >> >> OSLEC (Open Source Echo Canceller). Here's the hope page: >> http://www.rowetel.com/ucasterisk/oslec.html. On my blog I discussed >> installing it with zaptel 1.4.5.1. (1.4.6 is easier as you they fixed a >> bug in that needed manually patching.) >> http://www.theopensourcerer.com/2007/10/30/untangle-asterisk-pbx-and-file-server-all-in-one-part-71-oslec/ >> >> I'd just try it out. If you read the thread on the Trixbox forum you'll >> see that most of the respondents had excellent results too. >> >> HTH >> >> Alan >> >> > Sorry if my question seems a bit newb....but I'm familiar with echo > canceller on the client end but not on the server end. So after having > read some articles about the subject, I'd like to know if echo > cancellation on server is useful for communication between two PCs or > only between a VoIP UA and the analogic world (PSTN) ? > > Thanks, >
This OSLEC code, *and* the standard EC that the Zaptel modules provide, give LINE echo cancellation. That is fairly short duration echo as the round-trip delay is at wirespeed (0.7C or more). If you have any cards connecting to the PSTN over copper - you will almost certainly need echo cancellation. You almost certainly have it anyway, just didn't know about it probably. Hope this Helps Alan -- The way out is open! http://www.theopensourcerer.com _______________________________________________ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
