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Connecting the interface cable – H3C Technologies H3C MSR 50 User Manual

Page 183

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Figure 3-97 Sequence of RJ-45 pins

Table 3-67 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

Because the 2E&M and 4E&M modules cannot determine the interface types (Bell I/II/III/V), cable types
(2-wire or 4-wire), and pinouts (E/M/Tx/Rx) of the peer switch, you must prepare the interface cables of
the 2E&M and 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.

Connecting the interface cable

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