[asterisk-users] PRI T1 Problems

[Michael Welter]

Unless you're in China, you should advertise you telephone number as:
+1 863 248 1195

Is your provider "Quest" or Qwest?  Have you removed the disconnected 
numbers from your dial plan?

Frank at explido.us wrote:
> Sorry for disturbing you, but we have some problems with an installation 
> with multiple (84) T1s from Quest.
> Now, our Problem is disconnected numbers are reported by sending in-
> band channel alert message and the B-Channel will have the tri tone and 
> respective message but the line is never "picked up" and stays in ringing 
> when dialling. So disconnected numbers are never detected as 
> disconnected numbers.
> We tried this with digium and sangoma cards and the results are the same. 
> Quest offered us a audible treatment of the line which made things even 
> worse and would block the B-Channel for playing the message without 
> asterisk being aware that the channel is still used.
> Otherwise we have a huge problem with congestion due to unavailable B-
> Channels when the number of connections in asterisk does not match the 
> number of used channels / channels stay blocked after they have been 
> hung up for several seconds, again this seems to be mostly the problems 
> when b-channels carry audible alert messages.
> 
> Thanks for any good suggestions!
> 
> Frank Gorgas-Waller
> Explido Software USA Inc.
> Phone +863-248-1195  &  Fax +863-248-1155
> EMail  frank at explido.us  &  ICQ 7733546
> --QQ-------------------------------------------------------------
> We teach penguin to fly http://www.explido.us
> 
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