We have a location that is having a really odd issue. We have a sangoma POTs card. We are running software echo cancellation with the card (through asterisk) to try to eliminate some major echoing problems. I've turned on both EC and echotrain, which seemed to have gotten rid of the echo for the most part. However, we are now running into an issue where the outside caller hears a star wars type of sound. I expierenced this myself when talking to them. By this, I mean you hear a few words from them, then a few seconds lagging behind, you'll hear a muffled (darth vader) version of the same thing. Has anyone seen this? Thanks, Rob
That's probably just someone at the NSA snooping your lines and playing tricks on you... <g> --J -----Original Message----- From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces at lists.digium.com]On Behalf Of Rob Schall Sent: Thursday, March 27, 2008 4:24 PM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: [asterisk-users] Star Wars Echo Sound We have a location that is having a really odd issue. We have a sangoma POTs card. We are running software echo cancellation with the card (through asterisk) to try to eliminate some major echoing problems. I've turned on both EC and echotrain, which seemed to have gotten rid of the echo for the most part. However, we are now running into an issue where the outside caller hears a star wars type of sound. I expierenced this myself when talking to them. By this, I mean you hear a few words from them, then a few seconds lagging behind, you'll hear a muffled (darth vader) version of the same thing. Has anyone seen this? Thanks, Rob _______________________________________________ -- 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
I wanna say that's the echotraining taking effect. What it does is try to cause some echo so it can dynamically reconfigure the levels on the fly -- right at the start of the call. I know this happens with digium cards -- not sure if the Sangoma cards behave the exact same way. It's only at the start of the call right? once that occurs, the EC is kicked in and everything is fine? -- Chris Earle System Solutions Specialist, Network Technologies Division CBL Data Recovery w: http://www.cbltech.com "Rob Schall" <rschall at callone.net> wrote in message news:47EC0243.6000906 at callone.net...> We have a location that is having a really odd issue. We have a sangoma > POTs card. We are running software echo cancellation with the card > (through asterisk) to try to eliminate some major echoing problems. I've > turned on both EC and echotrain, which seemed to have gotten rid of the > echo for the most part. However, we are now running into an issue where > the outside caller hears a star wars type of sound. I expierenced this > myself when talking to them. By this, I mean you hear a few words from > them, then a few seconds lagging behind, you'll hear a muffled (darth > vader) version of the same thing. > > Has anyone seen this? > Thanks, > Rob > > _______________________________________________ > -- 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 >
> them, then a few seconds lagging behind, you'll hear a muffled (darth > vader) version of the same thing.I had a similar experience where people claimed it sounded like a 'Dalek' (yes, in UK). The sound is somewhat similar to Darth Vader, I suppose. This was down to a buggy Echocancellation/Silence Detection implementation in the softphone (iaxcomm). Conrad