Hi Tdoma,
First thing first, 2 T1’s do not equal a T3. There is a world of difference between a 3 Mbit (2xT1) connection and a 45 Mbit (1xT3) connection.
However, I can help. If you are using a bonded T solution which it sounds like you are, you should get a Multiflex Trunk T1 VWIC (Part...