sundance-communications.com/forum Forums TDM Business Telephone Systems Avaya - Lucent Telephones & Systems Partner Dead Data Port

Is there any fix for a dead data pair on a partner extension? I don't mind board level repair, so if its something simple like a fuse or blown cap I can repair it.

When a digital set is connect to the extension the displays flashes with no text display. Everything works fine with a analog set attached, and the set and wiring works fine connected to another port.

As a second question: What is the correct procedure for doing wiring changes on one of these. I destroyed the port while swapping two extensions with the system off. (Apparently not a long enough wait after turning it off, I still got an arc on the punchdown) Worse, this is the second time I've damaged a Partner punching down extensions. The first time the entire power supply blew on the MCC.

Of course, once again the extension is on the main module, so no cheap swap.

Mark

Sounds to me like you have a very old module, one not in good shape or possibly one that has been repaired or refurbished not very well.

The damage you describe should not happen. At most the port power will shut down until the system is reset. That's not to say that you should short the pair but it shouldn't cause damage.

-Hal

Sigh... I have a special gift when it comes to causing improbable failures. Why I am in this business is a complete mystery.

My thinking was also that Lucent/Avaya would design the equipment to tolerate brief shorts. It happens all the time in the telephone world.

When I blew up the first main module (a version 3 IIRC) I looked at the circuit board, and it didn't seem to have much current limiting between the power supply and the data pairs for all of the ports. OTOH, I think I only finished the supply off, the case around it had discolored from heat long before I touched it.

In this case the customer is my wife, and she will not be happy that I have to assign her a new extension number.

Thanks
Mark

My thinking was also that Lucent/Avaya would design the equipment to tolerate brief shorts.

Like I said there is overcurrent protection. You want to avoid shorting the pins 2&5 pair because when the port shuts down you have to cycle the power to the system to reset it. That of course means that you knock everybody off. So pull the plug for an extension before doing any wiring changes. God only knows what you did or what you have. I've only seen that kind of thing caused by lightning or old age.

Some old power supplies won't need your help to go up in smoke. The cases all get discolored after a few years from the heat. Means nothing, just the type of plastic.

And what is a version 3 IIRC??

-Hal