[Asterisk-Users] Adit 600 and Centrex

[Rich Adamson]

First thing I'd do is to put a multimeter across the fxo tip-ring and
look for disconnect supervision. In the US, that's typically a momentary
open (no voltage) at the end of a call.

Some centrex equipment can be configured to provide it while others 
don't have such a feature. If you find a difference, ask SBC to provide
on your lines.

------------------------

> Has anybody successfully setup an Adit 600, FXO via Kewlstart on a 
> Centrex line?
> 
> My setup:
> 
> Test system:
> 
>     Asterisk (Current CVS - 12-08-2005)
>     Adit 600 with 1 FXO 8 card
>     1 Loopstart (Centrex) phone line from SBC (Battle Creek, MI)
>     Channel bank setup as lscpd on the FXO card.
>     Asterisk signaling is FXS kewlstart
> 
> Incoming and outgoing calls work fine.
> 
> Semi-Production box
> (Communications between facilities full time, 2 outside lines).
> 
>     Asterisk (Current CVS - 12-08-2005)
>     Adit 600 with 1 FXO 8 card
>     2 Loopstart (Centrex) phone line from SBC (Livonia, MI)
>     Channel bank setup as lscpd on the FXO card.
>     Asterisk signaling is FXS loopstart
> 
> My scenario:
> 
> My test system using either loopstart or kewlstart works just fine, but 
> call disconnects take around 9 seconds before being detected.
> 
> My semi-production box, running loopstart never detects disconnect and 
> times out before hangup, switching to kewlstart, disconnects are 
> immediate.  But, I am unable to dial out. 
> 
> Any suggestions on how to diagnose this problem.  I'm supposed to be 
> onsite in Livonia Saturday to move the semi-production to a 
> full-production box of 11 lines.
> 
> Thanks,
> 
> Doug Lytle