The Vodavi offers a bit more in flexibility with regard to the voice mail since it can handle multiple entities and up to eight simultaneous calls. You might want to invest a little extra in the Vodavi system to add a remote programming modem so that your dealer can perform programming and maintenance without the need for a service visit. It's a small price to pay since it allows programming of the phone system AND the voice mail in one unit. Be sure to ask about it.

On the other hand, Avaya has more brand name recognition due to the original Partner products being marketed under the AT&T name. The Partner is expected to remain in current production until 2010. As was already suggested, you really should explore the cost of a larger voice mail offering with the Partner if you will be operating as separate companies.

Both systems operate on platforms that date well back to the early 1990's, so it's safe to assume that they are stable investments.

I think that everyone here will agree that the key to a satisfactory installation is a strong relationship with the equipment vendor. Reputation is everything. Remember that you are entering into a long term relationship with the vendor, not the manufacturer. Be sure to check references, licensing and insurance coverage held by both parties.

This forum alone has plenty of end-user feedback regarding both of these systems. Feel free to browse the Avaya-Lucent and Vodavi Categories. Being two of the most popular products from these manufacturers, there is plenty of information to be had.

Ed Vaughn, MBSWWYPBX