Digium 1TE133F and using RJ45 networking cable

I wanted to ask for the Digium 1TE133F single E1 card is it possible to use a regular RJ45 network cable (either crossover or straight-thru) to connect to our new ISP (Time Warner).

Sorry if it sounds like a silly question but I had to overtake the responsibility for our IPBX since the previous employee who managed the infrastructure no longer works in the office. We are getting a new ISP and I am building a new Asterisk server with the 1TE133F Digium card.

Negative. The pinout for Ethernet crossover (1+3 and 2+6) is different from the pinout for T1/E1 crossover (1+2 and 4+5)