AT&T 3.0 manual RJ21X Interface

Wiring

RJ21X Interface

The RJ21X network interface has a female 50-pin (25-pair) amphenol connector, as shown in Figure 4–1.

To connect the RJ21X interface to the control unit, you must build a wiring field between the RJ21X interface and the control unit using a 66-type block (RJ21). This field converts the female amphenol connector to sets of four 1- pair modular jacks.

4-4Connecting the Control Unit to the Network Interface