H3C Technologies H3C MSR 50 - Manual (Page 279)

4-84
Figure 4-107 Extending 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
If the remote device has 120-ohm interface, it is needed to use a 75-ohm-to-120-ohm adapter or use a
120-ohm cable.
3) When the E1 cable is a 120-ohm balanced twisted pair cable:
z
Directly connect the RJ-45 connector of the cable to the RJ-45 port of the remote equipment, if
there is no need to extend the E1 cable, or
z
Connect the RJ-45 connector of the cable to the network connector and the other end of the
network connector to the network equipment through a 120-ohm E1 trunk cable, if cable extension
is needed.
Figure 4-108 Extending 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 status of LINK LED on the FIC-2VE1 panel: ON means the link is connected and OFF
means the link is not connected. In the latter case, check the line.
FIC-2VT1
Introduction
2-port T1 voice interface module (FIC-2VT1) can handle dense voice signals in VoIP system. It
provides two CE1/PRI ports, allowing the access of 48 channels of voice signals.
z
VCPM is provided to users together with FIC-2VT1. Users can select VPM module as needed.
z
VPM module is installed on the main board of FIC-2VT1.