Keep in mind that integrating VM to a 50 analog port and to a 200D analog port ain't even close.
Something about the software. What MS55 or something vs. Lightware 15? Big strides. Most of the inexpensive VM manufactureres laugh when you mention SX-50.
I'll put a plug in for Fred at Resale Systems. Make him sell you a DuVoice cheap and you're good to go.
Carl
BTW in passing C.O.V. stands for control over voice, Mitel's implementation of digital lines to control Supersets.
