4000 Router Series Interface Module Guide

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Table 211 Pinouts of E&M interface cable (Bell V 4-wire)

E&M interface

RJ-45 Pin Signal Signal direction

1 — —

2 E IN

3 RING0 IN

4 RING1 OUT

5 TIP1 OUT

6 TIP0 IN

7 M OUT

8 SG Ground

NOTE:

Because the 4E&M modules cannot determine the interface types (Bell I/II/III/V), cable types (2-wire or

-wire), and pinouts (E/M/Tx/Rx) of the peer switch, you must prepare the interface cables of the 4E&M

modules according to the on-site conditions. To ensure the EMC of the router, install a ferrite core near the

connector of the E&M module interface cable at the router side.

The connection method

1. Connect one end of the magnetic-core telephone cable to the RJ11 or RJ45 interface of the

interface module.

2. Connect the other end of the magnetic-core telephone cable to the remote device interface.