Busy out Loop Start Trunk

[welund]

I've been drafted to rebuild my company's old overhead paging system, now that we went from an old NEC switch to a Nortel. The page system uses your typical Bogen TAM-B phone answering devices to pass phone audio to PA amps, and we're planning on doing it via Loop Start trunks from a Universal Trunk Card in the new 81C. The old systesm used these funky paging delays that used 4-Wire E&M from the NEC, that were installed in 1985 and no one understands how it works anymore. Time for a simple upgrade.

The Bogen TAM-B devices, when using loop trunks, has a 48 VDC power supply on it to act as battery. They work great for this, even though, yes, I know...loop starts suck, but in this case, we're not asking too much of them - just answer da phone, beep, and play a page.

However, in the event there are problems with a trunk or a paging delay (these things will be in a hunt to handle multiple pages at once, across 4 dedicated trunks), if I simply remove battery from the trunk, will the 81C see this trunk as "down" in terms of using it as a hunt when someone dials the DN for paging?

Basically, lets say something happens to the audio path whenever trunk 2 is used, and we just want to take it out of service. What I'm looking for is a way, that if this happens in the middle of the night, a building electrician could just "flip a switch" that says "disable this paging terminal" instead of having to have someone dial in and disu the TN of the offending trunk/paging controller, etc. If I can somehow make the PBX think the trunk is "busy" already by removing battery, or somehow applying a signal to it, that would be great.

Can the Universal trunk monitor for presence of battery as a supervisory function or something?

 

[johnpoole]

kiss.. keep it simple, a switch that puts a short on the line will mark that as a busy trunk. another thing that helps with loop start paging trunks is the tfd timer in the route, i program trnuks as wat ot lop and set tfd to 120, if the trunk hangs, the timer knocks it down after 2 minutes. saves me dialing in and doing it from home. your using battery from the bogan for co battery so the disco timer made need to be adjusted to see the disco, set the flash very fast and use a meter to time the open from the bogan, make the disco timer on the route a little shorter then that. i would have used the e&m, better supervision. but your right they are old and more complex then needed.. ear and mouth trunks went the way of rotery dial..

john poole
bellsouth business
columbia,sc