On Thu, Aug 09, 2007 at 11:39:38AM -0400, Gleim, Jason wrote: > I have an Asterisk box connected to a Nortel Option 11C via a T1. In the > Asterisk box we have a Sangoma A101C and in the Nortel we have a TMDI > card. The Nortel is also hooked to the PSTN via a T1 on a different > NTAK09 PRI card. I've included the Zapata.conf and zaptel.conf files > below. > > Our issue is that when a call is sent over the tie line between the two > systems, the audio on the Asterisk side is terrible. There are rapid > 'clicks' on it similar to when you have a cell phone close to an analog > phone or a set of computer speakers. The clicks start as soon as the > audio channel is opened (when I start to get rings) and it only affects > the Asterisk side of the call. But, it affects both inbound and outbound > audio on that side. On the Nortel side, the audio they hear is soft and > distorted. On the Asterisk side, the audio they hear is full of the > clicking but broken thru when the caller speaks. It's almost like the > 'silence packets' are being interpreted wrong by Asterisk. If I put the > Asterisk box on the T1 for the PSTN, it works perfect. > > The best part of all this... if we disable the TMDI card in the Nortel > and then re-enable it, the audio is pristine... until the Nortel runs > it's nightly maintenance routines. Then the noise is back the next day. > We can always clear the problem with the disable/re-enable trick but it > always come back after maintenance.
My bet is clock-slip due to a fight over who's clocking the line. Cheers, -- jra -- Jay R. Ashworth Baylink [EMAIL PROTECTED] Designer The Things I Think RFC 2100 Ashworth & Associates http://baylink.pitas.com '87 e24 St Petersburg FL USA http://photo.imageinc.us +1 727 647 1274 _______________________________________________ --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
