H3C Technologies H3C MSR 50 - Manual (Page 78)

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Figure 2-72 SIC-1VE1 panel
The following table describes the LEDs on the SIC-1VE1 panel.
Table 2-46 LEDs for the electrical interface on the left of SIC-1GEC panel
LED Description
LINK
z
ON means carrier signal is received;
z
OFF means no carrier signal is received.
ACT
z
OFF: No data is being received and transmitted;
z Blinking: Data is being received and transmitted.
Interface cable
The interface cable of SIC-1VE1/SIC-1E1-F is a standard E1 G.703 which has two types: 75-ohm
unbalanced coaxial cable and 120-ohm balanced twisted pair cable. The following figure illustrates
these two types of cables.
z
75-ohm unbalanced coaxial cable
Figure 2-73 E1 G.703 75-ohm unbalanced coaxial cable
75-ohm unbalanced coaxial cable connects SIC-1VE1 with the DB-15 connector and the network end
with the BNC connector.
A pair of coaxial connectors is available for extending the E1 cable. Both ends of the connectors are
BNC receptacles that can be used to connect two 75-ohm unbalanced coaxial cables with BNC
connectors.
z
120-ohm balanced twisted pair cable