On 8/9/07, Gleim, Jason <[EMAIL PROTECTED]> wrote: [snip] > > I thought that might be an issue too... and it was originally. When we > started out, I had the Sangoma card generating the timing for the span > but we could never get the d-channel to come up. Turns out that since we > were connected to the PSTN, we had to let the Nortel set the timing on > the span because it was receiving the timing from the CO. (Essentially > the timing needed to 'flow' away from the CO) > > But, since we got that fixed and the span started working, I felt that > timing wasn't the source of the problem. Plus, if we dump the error > counters on both ends, they are not incrementing... even if the span is > up for several days and we clearly have the audio problems. The slip > counters, framing error, etc all stay at 0 and you would figure that if > it was timing slip, those would be incrementing on at least one of the > sides.
Yes, but the audio artifact might be caused if Asterisk is using a different internal clock to your hardware card, particularly if transcoding is occuring. (This would not cause errors on the card, but would cause distortion) A standard E1/T1 install will have the Telco providing clock to your E1/T1 card, which then acts as the master clock to Asterisk. See the email from Kevin Bockman previously in this thread - I believe he has the answer. Cheers, Steve _______________________________________________ --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