Thanks for the information Skip. My purpose was not to bypass the vendor, 100% of our installations are done by phone vendors. I was trying to estimate how much work was going to be necessary so I could give the client a realistic estimate of how much time and material it might take for the issue to be resolved.
Our company is a Message OnHold company, not a phone company...we gladly leave the installations of the MOH units to professionals like you and the good members of this forum. We usually have to find specific information about the phone system to insure that we dispatch the most qualified technician and to insure a smooth installation with the least amount of disruption to the client's business. That was the reason behind my post.
We contract phone technicians throughout the nation, Canada, South America and Europe...100% of our installations are done through contracted phone vendors (unless the client specifies otherwise).

MOH-Guru
Audio Messaging Solutions
Austin, TX