Swapping in a new HD would probably be a freebie fix since I have a few extra HDs. Does the HD need to be formatted??

I think you are forgetting one important thing, the software. Even if you had a HD of the correct type you would have to find a way to format it for some proprietary OS then load the VS R5.0 software. Only problem is you have no way of getting it unless you work for Avaya.

The link DTMF gives has drives already loaded, just make sure you order the correct one and hope that that is the problem or this could turn into a costly experiment with money that would be better spent on a new mod.

-Hal

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