[Asterisk-Users] line battery check

[Steven Critchfield]

On Tue, 2003-07-08 at 10:29, Jon Pounder wrote:
> I know in the x100p hardware the driver can sense whether there is battery 
> voltage on the line or not. Is this possible in the zap drivers using t1/e1 
> interfaces ?
> 
> I believe the signalling bits are only ring and hook, not loop presence, so 
> not sure if it is possible.
> 
> I had a situation last night where a main cable was cut in the area and 
> lines were down overnight. My burglar alarm knew right away there was no 
> line battery and started beeping. Data T1 down was a no-brainer for the 
> monitoring software to detect. Now I am looking for a way to detect loop 
> loss on the voice lines - any ideas how to accomplish with asterisk ?
> 
> I have a zhone bank - anyone know offhand if I can program loop loss on a 
> port to put it into an alarm state ? At least then I would have a contact 
> closure I could monitor easily.

I don't think the zhones support external notification of alarm other
than the LEDs. The CACs do for sure, and therefore it is a good bet the
Adtran stuff does as well. I know on my CAC hardware there is an
external plug to tie into to put any number of monitors on to detect
when it has had a problem.
-- 
Steven Critchfield  <critch at basesys.com>