RINGING ON 016 T/R LEGEND CARDS

[ritelcarlos]

Hello,

could someone tell me if there is an issue with 016 t/r legend cards not ringing a 2500 set

we have a regular 2500 set with a regular ringer not electronic and it does not ring all the time so we got a new one from graybar but it does the same thing so we change it to a different port on the 016 card same results

thanks

 

[SYQUEST]

It could be a power supply problem. What power module does the carrier have in it? What is the 016T/R module code? It would be something like 517xxx. You might check the ringing generator output by measuring the voltage on an unloaded station port, when ringing it.

....JIM....

 

[HiDesert]

I agree..it has to be the power supply....Get yourself a
C1 series and see what happens. The only other issue
it could be is the backplane...
Are the 2 0x16's in the same cabinet??
For what ever reason, I have seen BP's go bad.

 

[Dexman]

I'm wondering if you tried an SLT with an electronic ringer (and a REN of, say 0.0 or 0.1) would it ring consistently

If it ain't broke, I haven't fixed it yet.

 

[SYQUEST]

If it can't ring a C4A ringer, then something is wrong with the ringing generator or the backplane as HiDesert suggested. 1.0 REN should not be taxing to any analogue station port on the Legend/Magix.

....JIM....

 

[dagwoodsystems]

It could be that the phone is unusually far from the PBX--say over 1000 feet. A way to address my thoughts as well as the failing ring generator theory is to simply hook up the phone as directly to the board as possible. That's not a very sensible test though if the problem happens only on occasion.

How often are you getting a failed ringing at the phone? Is there any chance that programming comes into play? For example, the extension could be one of several covering points for a DGC, or whatever.

I'm also curious as to how new this whole thing is (the board, the extension, the cable run, etc). Have you used this port before? Has the jack worked historically? I ask because I've seen a case or two where ring voltage was able to "jump over" a marginal connection and ring the station anyway...but not always. As you can imagine, the ability to ring that phone became less and less over time.

Tim Alberstein

http://www.dagwoodsystems.com

 

[TouchToneTommy]

Here's the specs for an 016 T/R

Capacity: 16 T/R extensions on 2-way voice transmission path with support for telephones with message waiting lights, 4 TTRs

Power: 40-VDC, 600-ohm battery source

Ringing current: 105-Vrms, 30-Hz sinusoidal ringing superimposed on -48 VDC

REN: ³ 4.0 per port

Disconnect signal: 900 ms (T/R short for analog modems, G3 fax, etc.)

Switchhook flash detection: 300–1200 ms

If you have multiple cabinets, I would swap power supplies, if not I would look for a replacement one (or possible a loaner for testing purposes)