MIM-1E1/MIM-2E1/MIM-4E1/MIM-1E1-F/MIM-2E1-F/MIM-4E1-F Modules 83
Interface Cable Interface cable of MIM-1E1/MIM-2E1 and MIM-1E1-F/MIM-2E1-F modules
MIM-1E1/MIM-2E1 and MIM-1E1-F/MIM-2E1-F interface cables are
G.703-compliant cables (referred to as E1 cables throughout the rest part of the
manual). E1 cables are divided into two types: 75-ohm unbalanced coaxial cables
and 120-ohm balanced twisted pair cables.
■75-ohm unbalanced coaxial cable
Figure 92 E1 75-ohm unbalanced coaxial cable
nYou can select a pair of coaxial connectors with a BNC receptacle at both ends that
connect two 75-ohm unbalanced coaxial cables with BNC connectors. The coaxial
connectors are used for the extension connection with E1 75-ohm unbalanced
coaxial cable.
■120-ohm balanced twisted pair cable
At the router side, the connector of the cable is DB-15 (male); at the network side,
the connector is RJ-45, as illustrated in the following figure.
Figure 93 E1 120-ohm balanced twisted pair cable
nYou can select a network interface connectors with an RJ-45 receptacle at both
ends that connect two 120-ohm balanced twisted pair cables with BNC
connectors. The network interface connector is used in the extension connection
with E1 120-ohm balanced twisted pair cables.
In addition, a 75-ohm to 120-ohm adapter is provided.
Table 47 Description of the LEDs on MIM-1E1/MIM-2E1/MIM-4E1 and
MIM-1E1-F/MIM-2E1-F/MIM-4E1-F panels
LED Description
LINK ON means the carrier signal has been
received.
OFF means no carrier signal has been
received.
ACTIVE OFF means no data is being transmitted or
received. ON means data is being
transmitted or received.