DSL vs Message waiting light

[smoom]

So we installed a DSLAM for a small hotel in our area. The hotel is using an Iwatsu PBX for the guest phones (that we do not maintain) the customer keeps calling us and saying the DSL modems in the guest rooms are not working. After changing out 40 DSL modems we figured out that the DSL modems loose there config when the message waiting light on the telephone is turned on by voice mail. I guess the 80v MWI light is killing the ROM chips of the modems. Just wondering if anyone has ran into this before or some ideas of what could be done to fix it.

 

[Dexman]

I'm not familiar with Iwatsu, but would it be feasible to run additional cables in order to separate the voice & data?

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

 

[smoom]

The property is on a resort and it encompasses several buildings, with limited extra cable pairs to the buildings. My first impression was to just cut through an extra cable pair to each unit but there was not enough cable.

 

[SYQUEST]

Are you using DSL line splitters?

Have you contacted the manufacturer of the DSL interfaces?

What about the line ringing voltage?

Do the pairs have proper protection per NEC?

Have you tried a separate pair, where available, to see if that fixes the problem?


....JIM....

 

[PERRYPJ]

It looks like your DSL Modems won't handle the 90-120VDC, you can ask them if they could supply shutter tone for a message waiting indicator from the PBX.

OLD ROLMEN WORKING ON NORTELS AND AVAYA