Re: [asterisk-users] ECHO Cancellation in SIP Calls
Hi, i am from Germany, so excuse my School English. I use Asteriks 1.2.12.1, zaptel 1.2.9 and mISDN Rc25 - since my update of Asterisk 2 wooks ago, Echos accure in my SIP Calls. I use SNOM 360, sometimes there is no echo (for example if i call myself via SIP->Asterisk->SIPProvider->TELEKOM->ISDN) but if i call other people there occures Echo many times. The Routing is always the same : SIP (SNOM) -> Asterisk -> VoIPProvider -> ISDN/POTS Can i control the cancellation with the zapata.conf ? The snom phones are pretty decent devices and shouldn't introduce echo. Your latency might be too high between asterisk + voipprovider introducing a delay that is noticed as echo. You are hearing the echo that is introduced on the callers side. As I understand it, when you are calling someone there is no zap involved and thus you can't cancel it with zapata.conf. if you look at voip-info.org [1] you'll find a good explanation why you can't use an echo canceller to cancel that sort of echo. So, check the path between you and the voipprovider, e.g. connection saturation, ping times etc (This is assuming you have a proper lan connection between asterisk/snom) Conrad [1] http://www.voip-info.org/wiki/index.php?page=Asterisk+Echo +Cancellation Hi Conrad, thanks for your help, this is the way i understand it all the time, a year ago i have optimized my Business Lan for VoIP and there is no loss or lag anymore, the Provider seems to be okay, i have pinged him for one day with MTR, no great loss or high ping. Some days ago i have read a Thread about EC-Cancellation in SIP Calls with the zapata.conf and never understood how this could work, thats the beginning of my question ;) In my case, there is no Zap, you are right. So i must start at the beginning and search for a lag... The EC started two or weeks ago after one year of great communication, in this time i updated Asterisk from 1.2.10 to 1.2.12.1 and zaptel from 1.2.7 to 1.2.9 ... I will watch the Quality and the latency next timeThx for your time ! Stefan ___ --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
Re: [asterisk-users] ECHO Cancellation in SIP Calls
> > I use SNOM 360, sometimes there is no echo (for example if i call myself > > via SIP->Asterisk->SIPProvider->TELEKOM->ISDN) > > but if i call other people there occures Echo many times. The Routing is > > always the same : > > SIP (SNOM) -> Asterisk -> VoIPProvider -> ISDN/POTS > > > > Can i control the cancellation with the zapata.conf ? > > Sure, but only for Zaptel channels. Not for mISDN channels. If you use > ZapBRI, this would be the place to configure echo cancelling. > The important bit is: "I use SNOM 360, sometimes there is no echo (for example if i call myself via SIP->Asterisk->SIPProvider->TELEKOM->ISDN) but if i call other people[...]" If *he* calls other people he's not going to use zap or misdn, as far as he is concerned it is SIP all the way. (the voip provider puts it into pots) Conrad ___ --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
Re: [asterisk-users] ECHO Cancellation in SIP Calls
On Thu, Oct 26, 2006 at 12:18:20PM +0200, Stefan Agethen wrote: > Hi, > > i am from Germany, so excuse my School English. > > I use Asteriks 1.2.12.1, zaptel 1.2.9 and mISDN Rc25 - since my update > of Asterisk 2 wooks ago, Echos accure in my SIP Calls. > > I use SNOM 360, sometimes there is no echo (for example if i call myself > via SIP->Asterisk->SIPProvider->TELEKOM->ISDN) > but if i call other people there occures Echo many times. The Routing is > always the same : > SIP (SNOM) -> Asterisk -> VoIPProvider -> ISDN/POTS > > Can i control the cancellation with the zapata.conf ? Sure, but only for Zaptel channels. Not for mISDN channels. If you use ZapBRI, this would be the place to configure echo cancelling. -- Tzafrir Cohen icq#16849755jabber:[EMAIL PROTECTED] +972-50-7952406 mailto:[EMAIL PROTECTED] http://www.xorcom.com iax:[EMAIL PROTECTED]/tzafrir ___ --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
Re: [asterisk-users] ECHO Cancellation in SIP Calls
On Thu, 2006-10-26 at 12:18 +0200, Stefan Agethen wrote: > Hi, > > i am from Germany, so excuse my School English. > > I use Asteriks 1.2.12.1, zaptel 1.2.9 and mISDN Rc25 - since my update > of Asterisk 2 wooks ago, Echos accure in my SIP Calls. > > I use SNOM 360, sometimes there is no echo (for example if i call myself > via SIP->Asterisk->SIPProvider->TELEKOM->ISDN) > but if i call other people there occures Echo many times. The Routing is > always the same : > SIP (SNOM) -> Asterisk -> VoIPProvider -> ISDN/POTS > > Can i control the cancellation with the zapata.conf ? The snom phones are pretty decent devices and shouldn't introduce echo. Your latency might be too high between asterisk + voipprovider introducing a delay that is noticed as echo. You are hearing the echo that is introduced on the callers side. As I understand it, when you are calling someone there is no zap involved and thus you can't cancel it with zapata.conf. if you look at voip-info.org [1] you'll find a good explanation why you can't use an echo canceller to cancel that sort of echo. So, check the path between you and the voipprovider, e.g. connection saturation, ping times etc (This is assuming you have a proper lan connection between asterisk/snom) Conrad [1] http://www.voip-info.org/wiki/index.php?page=Asterisk+Echo +Cancellation ___ --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
[asterisk-users] ECHO Cancellation in SIP Calls
Hi, i am from Germany, so excuse my School English. I use Asteriks 1.2.12.1, zaptel 1.2.9 and mISDN Rc25 - since my update of Asterisk 2 wooks ago, Echos accure in my SIP Calls. I use SNOM 360, sometimes there is no echo (for example if i call myself via SIP->Asterisk->SIPProvider->TELEKOM->ISDN) but if i call other people there occures Echo many times. The Routing is always the same : SIP (SNOM) -> Asterisk -> VoIPProvider -> ISDN/POTS Can i control the cancellation with the zapata.conf ? I have tried this with "echocancel=..." and so on, no luck :( I would be glad to get some help, the Docs of Asterisk dont explain how to cancel Echos in ! SIP ! ___ --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
