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3Com Router 5000 and Router 6000 v2.41
Module Guide
Chapter 4 Flexible Interface Cards (Router 6000)
4-52
Figure 4-51 75-ohm 8E1 conversion cable
Figure 4-52 120-ohm conversion cable
4.16.5 Connecting the Interface Cable
Step 1: Choose a conversion cable appropriate to the interface type of the device to
be connected.
z If the interface impedance of the device to be connected is 75-ohm, use a 75-ohm
4E1/8E1 conversion cable.
z If the interface impedance of the device to be connected is 120-ohm, use a
120-ohm 4E1/8E1 conversion cable.
Step 2: Insert the DB-68 connector of the cable to the DB-68 port on the Router 4-Port
E1 IMA FIC/ card, and fasten the cable fastening screws.