H3C Technologies H3C MSR 50 - Manual (Page 142)

3-38
Connect the local Tx wire in the E1 cable to the remote Rx wire and the local Rx wire to the remote Tx
wire.
Figure 3-42 Extend an E1 75-ohm unbalanced coaxial cable
Router
Network
devices
such as DDN
DB-15
Coaxial connector
BNC BNC
75-ohm non-balanced coaxial cable
75-ohm E1 trunk cable
z
If the port on the network device to be connected has a 120-ohm port, use a 75-ohm to 120-ohm
adapter, or use a 120-ohm cable instead.
2) When using a 120-ohm balanced twisted pair cable,
z
Connect its RJ-45 connector to the RJ-45 port on the device to be connected directly, if cable
extension is not needed.
z
Connect its RJ-45 connector to a network interface connector and then the other end of the
network interface connector to the network device to be connected through a 120-ohm E1 trunk
cable, if cable extension is needed.
Figure 3-43 Extend an E1 120-ohm balanced twisted pair cable
Router
Network
devices such
as DDN
DB-15
Network interface connector
RJ-45 RJ-45
120-ohm balanced twisted pair 120-ohm E1 trunk cable
Step4 Check the behavior of the LINK LED on the module panel. It is OFF when fault has occurred on the link
and signal is out of synchronization. In this case, please check the link.
Connecting interface cable of MIM-4E1/MIM-4E1-F
Step1 Select the appropriate 4E1 cable and E1 cable according to type of the port on the remote device, and
set DIP switches of MIM-4E1 or MIM-4E1-F module correctly;