Nobody has been able to answer this. Not even Digium at this stage, but I'm hoping someone here, smarter than I, will be able to. We are running some TE406P (upgraded 405Ps) cards performing mainly PRI bridged calls. After a server is brought up, calls sound absolutely perfect. Over time, delay (latency) creeps into the calls. What is really weird about that is apparently with the new Digium firmware, the native bridge is pushed down to the card, meaning the call never leaves the card (never hits the PCI bus). If this is the case, the latency must be being introduced in the card/driver. A restart of asterisk with removal/reload of the card driver fixes the problem (temporarily). This is in a production environment, and this is driving me insane. I'm about to try Sangoma cards, as I feel I'm really getting nowhere.
> -----Original Message----- > From: asterisk-users-bounces@lists.digium.com > [mailto:asterisk-users-bounces@lists.digium.com]On Behalf Of Rod Bacon > Sent: Thursday, October 06, 2005 8:36 PM > To: asterisk-users@lists.digium.com > Subject: [Asterisk-Users] Latency on bridged PRI calls > > > Nobody has been able to answer this. Not even Digium at this > stage, but I'm hoping someone here, smarter than I, will be able to. > > We are running some TE406P (upgraded 405Ps) cards performing > mainly PRI bridged calls. > > After a server is brought up, calls sound absolutely perfect. > > Over time, delay (latency) creeps into the calls.Roughly how much clock time before it becomes noticeable? Also, does it degrade faster if more calls are up? Finally, is there any echo cancellation enabled for the bridged calls, either in the card or the zaptel software canceller? {clip}> A restart of asterisk with removal/reload of the card driver > fixes the problem (temporarily).Are you running stable or CVS-head? If CVS, what date? Just trying to fill in the blanks for the list - I've not heard of this kind of problem before. Kris Boutilier Information Services Coordinator Sunshine Coast Regional District
Upon closer inspection, I don't think my system ever tries to establish a zaptel native bridge. Is there somewhere where this function is enabled/disabled? =========================================Rod Bacon Empowered Communications Ground Floor, 102 York St. South Melbourne Victoria, Australia. 3205 Phone: +613 99401600 Fax: +613 99401650 FWD: 512237 ICQ: 5662270 ========================================= Rod Bacon wrote:> Nobody has been able to answer this. Not even Digium at this stage, but > I'm hoping someone here, smarter than I, will be able to. > > We are running some TE406P (upgraded 405Ps) cards performing mainly PRI > bridged calls. > > After a server is brought up, calls sound absolutely perfect. > > Over time, delay (latency) creeps into the calls. What is really weird > about that is apparently with the new Digium firmware, the native bridge > is pushed down to the card, meaning the call never leaves the card > (never hits the PCI bus). > > If this is the case, the latency must be being introduced in the > card/driver. > > A restart of asterisk with removal/reload of the card driver fixes the > problem (temporarily). > > This is in a production environment, and this is driving me insane. I'm > about to try Sangoma cards, as I feel I'm really getting nowhere. > > > > > > _______________________________________________ > --Bandwidth and Colocation sponsored by Easynews.com -- > > Asterisk-Users mailing list > Asterisk-Users@lists.digium.com > http://lists.digium.com/mailman/listinfo/asterisk-users > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users > >