Dean, Take this with some salt... I am no guru on this stuff but for some reason my brain is popping into my head the word 'closed loop'? I think this is something specific for Alarms... it's been like 15 years since I was involved with an installation on one.
If I recall, it was a way to wire the Alarm jack (or a special RJ-?? jack) that cuts off communication if the line is picked up at that jack. I assume so someone can't trip the alarm and just pickup the phone and screw up dialing/communications to the alarm company to report a trip. This is why you have to wait a minute or two to be able to make a phone call when an alarm triggers. That's the only thing I can think of, maybe this will trigger someone else to chime in and say I'm completely wrong. -----Original Message----- From: Dean Yorke [mailto:[email protected]] Sent: Thursday, March 05, 2009 4:29 PM To: asterisk Mailing Subject: [on-asterisk] alarm systems Hi All, I know that this might be a little off topic but....... Wondering if someone can help me understand the difference between an analogue line and a local loop line from bell. we have a couple pieces of equipment, (pitney bowes mail machine and personal install alarm system) that are having issues communicating on these lines. Thanks --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
