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Interface Card and Interface Module Manual
H3C MSR 20/30/50 Series Routers
Chapter 3 Multifunctional Interface Modules
3-61
Table 3-39
Pinouts of E&M interface cable (Bell V 4-wire)
Router side
RJ-45 Pin
RJ-45 interface signal
Signal at switch side (Bell V 4-wire)
1
SB (negative power supply)
—
2 E
M
3 RING0
RING0
4 RING1
RING1
5 TIP1
TIP1
6 TIP0
TIP0
7 M
E
8
SG (negative power supply
ground)
—
Note:
Because it is hard to determine the type of the switch to be connected and its
connectors, interface cables of MIM-2E&M/MIM-4E&M modules have to be prepared
according to the on-spot conditions or by the user. To ensure the EMC of the Router,
install a ferrite core near the connector of the prepared E&M module interface cable by
the router side.