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Interface Card and Interface Module Manual
H3C MSR 20/30/50 Series Routers
Chapter 2 Smart Interface Cards
2-8
Figure 2-13
RS530 DCE cable
For the pinouts of synchronous/asynchronous serial cables (with DB-28 connectors),
see
Low-End and Mid-Range Series Routers Cable Manual
.
Note:
These cables are optional items. Please select one when purchasing a SIC-1SAE card;
by default, the cable is not provided.
2.2.5 Connecting the Interface Cable
Warning:
z
Before plugging or unplugging the interface cable connected to the SIC-1SAE card,
power off the router. Online insertion or removal tends to damage the port and even
the device.
z
Before connecting the SIC-1SAE card to a remote device, identify the type of the
device, such as its synchronous/asynchronous mode and DTE/DCE mode, and the
signaling criterion, baud rate and time clock required by the access device.
Step 1: Choose a synchronous/asynchronous serial interface cable depending on the
type of the interface on the remote device.
Step 2: Plug the DB-28 connector of the cable to the DB-28 port on the SIC-1SAE.
Step 3: Connect the other end of the SAE cable to:
z
Port of CSU/DSU if the WAN is a DDN line.
z
Serial port on an analog modem if the WAN is a dial-up line.
Step 4: Check the behavior of the LINK LED on the card panel. It is OFF when the line
is faulty and signal is out of synchronization. Check the line for the cause.