I will be installing a Partner T-1 module for a customer who want DIDs on there phone system. I need to know if there special setting for the T-1 when I order it from AT&T. I think I need a T-1 super trunk(2 way) with B8ZS and ESF. Do I need wink start also? Am I missing anything else? Thanks for any help!

You also can only use 16 channels starting at 9 I think...and no CALLER ID can be sent to you. I had a horrible time with DID's not working, until I called the provider and they said they had caller id on, they turned it off and everything works great now. You should also expect 4 digits.