I need to program a T/1 on the CX that will be connected to an Intertel Access phone system. How do I accomplish this? What are the programming steps? The Intertel has 3 digit ext's starting with the digit 1(1xx). The Mitel CX will only be used as a Gateway that connects to a CXI at another location. The CX and CXI were already programmed to allow calling between the two Mitel systems. I'm new to the Mitel world and could use some assistance in completing this task of connecting the Mitel CX and Intertel phone system. Thanks in advance.