H3C MSR 20 Series Manual page 105

Interface Card and Interface Module Manual
H3C MSR 20/30/50 Series Routers
Figure 3-30 E1 75-ohm unbalanced coaxial cable
Note:
You 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 3-31 E1 120-ohm balanced twisted pair cable
Note:
You 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.
Chapter 3 Multifunctional Interface Modules
3-21