You're going to need some significant capital and a lot of engineering experience. Honestly, if you're data only, T1 service is no longer needed and the expense is not warranted (since you can do FiOS or Cable and get 20x the speed at 1/2 the cost of a 1.5mb T1).
If you're going to value-add a T1 for managed services and/or voice, your CLEC status will need to be e911 compliant, have an ENUM database and a rock solid core network (again, make sure you have a boat load of capital).
You'll also need to get some lawyers on your side to review tariff contracts and peering arrangements to make your network have some sort of good routing to attract customers who actually still want T1s.
the ISP side of what you're doing it going to cost you hundreds of thousands (if not millions) to make 5-10% margins (if you're lucky).... do it right and negotiate a really good reseller contract and you can make 15-18% reselling a carrier who already has made this investment.--
CLEAR LINK Networks, Inc.
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