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Interface Card and Interface Module Manual
H3C MSR 20/30/50 Series Routers
Chapter 2 Smart Interface Cards
2-12
Table 2-7
Description of the LEDs on SIC-1EPRI/SIC-1E1-F panel
LED
Description
LINK
ON means carrier signal has been received.
OFF means no carrier signal has been received.
ACT
OFF means no data is being transmitted or received; blinking
means data is being received or/and transmitted.
2.3.5 Interface Cable
Interface cables for SIC-1EPRI/SIC-1E1-F are standard E1 G.703 cables. E1 G.703
cables have two types: 75-ohm non-balanced coaxial cables and 120-ohm balanced
twisted pair cables, shown as follows:
z
75-ohm non-balanced coaxial cable
Figure 2-17
E1 G.703 75-ohm non-balanced coaxial cable
75-ohm non-balanced coaxial cable connects SIC-1EPRI/SIC-1E1-F with the DB-15
connector and the network end with the BNC connector.
Note:
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
non-balanced coaxial cables with BNC connectors.
z
120-ohm balanced twisted pair cable
Figure 2-18
E1 G.703 120-ohm balanced twisted pair cable