3Com MSR 30, MSR 20, MSR 50 manual FIC-8ASE/FIC-16ASE, Introduction Functions

FIC-8ASE/FIC-16ASE 159

■RS530 DCE cable

Figure 190 RS530 DCE cable

n These cables are optional. Please order them together with the FIC-SAE card. By default, they are not provided.

Connecting the Interface

Cable

c CAUTION: Do not plug or unplug interface cables into or from the FIC-SAE card to prevent the device or ports from being impaired.

Before connecting an FIC-SAE 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.

FIC-8ASE/FIC-16ASE

Introduction Functions

FIC-8ASE/FIC-16ASE, 8-/16-port enhanced asynchronous serial interface card, transmits, receives, and processes data traffic on asynchronous serial interfaces. Each asynchronous serial interface can operate at a speed as fast as 115.2 kbps, supporting terminal access service and asynchronous leased line. In addition, these asynchronous serial interfaces can serve as the dialup access servers for the small