hmmm. I have an SV8100 that two service providers are trying to get Call Accounting to work with. I configured the PBX to talk nice with the Call accounting software now it needs to talk to the Property Management software. These guys are going round and round with each other and the final verdict is:

Quote
The CA packet needs to have a checksum…

The PBX isn’t sending the proper format. Tell them they need to us the “model 90” protocol.
The interface guy on the other end has no clue what that means...nor do I.

In the interest of expedition and stopping the incessant game of hot potato...What the hell does that mean? And what program number can I find that in?

The way he put quotes around "Model 90" makes me think he's messing with the other guy, like it's made up like an "ID-10T" error.