3Com Router Module Guide
Chapter 4
4-21
4.4.3 Panel and Interface LEDs
The following figure illustrates the ROUTER 4-PORT CE1/PRI FIC panel.
Figure 4-20
ROUTER 4-PORT CE1/PRI FIC panel
The following table describes the LEDs on the card panels.
Table 4-11
LEDs on the FIC-E1 and FIC-E1-F panels
LED
Description
LINK
OFF means no link is present; ON means a link is present.
ACTIVE
OFF means no data is being transmitted or received on the interface; blinking
means data is being transmitted and/or received.
4.4.4 Interface Cable
I. Interface cable of the ROUTER 4-PORT CE1/PRI FIC
Interface cables for the ROUTER 4-PORT CE1/PRI FIC are G.703-compliant cables,
also known as E1 cables. The cables are divided into two categories: 75-ohm
unbalanced coaxial and 120-ohm balanced twisted-pair.
z
75-ohm unbalanced coaxial cable
As shown in the following figure, at the router end of the cable is a DB-15 plug and at
the network end are two BNC receptacles.
Figure 4-21
E1 75-ohm unbalanced coaxial cable