Connecting The Interface Cable - 3Com 3C13886 - Router OC-3 ATM SML Flexible Interface Card Installation Manual

3Com Router Module Guide
Figure 4-19 RS530 DCE cable
Note:
These cables are optional. You must order them together with the FIC card. Otherwise, they are not
provided.

4.3.5 Connecting the Interface Cable

Caution:
Before connecting an FIC card, identify the type of the equipment to be connected (that is, the
synchronous/asynchronous mode, DTE/DCE mode, and so on), signaling criterion required by the
access equipment, baud rate, and line clock.
Step 1: Identify type of the interface to be connected and then choose the correct
synchronous/asynchronous serial interface cable.
Step 2: Plug the DB-28 connector of the cable to the corresponding DB-28 port on the
FIC-SAE card.
Step 3: Connect the other end of the cable as follows:
If the WAN is a DDN line, connect the cable to the port on the CSU/DSU.
If the WAN is a dialup line, connect the cable to the serial port of an analog
modem.
Step 4: Power on the router, and check behavior of the LINK LED on the FIC-SAE
panel. It is OFF when fault occurs on the line and signal is not synchronized. Check
the line status.
4-19
Chapter 4