The PMS-U10 is usually for the Asprire and UX and other NEC switches.

There is an SV8100 PMS devepolers guide that has all of the info on the protocols ant it shows the sv8100 hooked up to the PMS-U10.

I think the default is KTSi protocol

Generally The SV8100 uses a PVA card that is confiured via an IP connection and it has a web interface.

As far as someone calling it a Verizon problem - there is No Way.