Thanks for the information. . . . .we are located in Summerville, SC - close to Charleston.

I have contact, at times, with a previous phone vendor and he said that all that would be required would be for the new carrier to switch our connections from one carrier to another via a jack or some kind of equipment in our telephone equipment room. (he is/was familar with our setup).

OK, I have supplied our location and I thank you very much for the suggestion, but is there anything that I can do to determine the configuration or will it absolutely require a phone vendor? Thank you again - I appreciate your quick reply and I will be waiting for further instructions.