Gerry, as a technology consultant to car stores, I get called on to design data networks, both local and wide area. Part of the consideration I have to bring to a network design is the idea of resource utilization. T-1 is a great technology, and you can often get a 'package' deal with a 2nd tier service provider to get you a lower rate on your long distance as well. Another consideration is the type of T-1 they are proposing ... and this may get too technical, but there is a point-to-point version and a dynamic bandwidth version. The dynamic bandwidth version is always quoted as cheaper, however it limits the other uses that can be made of the T-1. Consider the possibility of 'channelizing' the T-1 and using part of it for data communication. There are 24x64k channels in a T-1 ... why not use some of that for data, either to the Internet or between operational locations. The question always has to be asked '...and what is my other option?'
You also have to look at the benefits of moving to digital switching for your internal phone system. Today's benefits are not all that profitable, but as integrated telephony matures, you will find that digital will actually simplify your operations by tying the phone to you data systems.
Good luck.
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Chris Lange
Senior Consultant
Automotive Technology Associates, Inc.
clange@carstoresystems.com401.831.6870