3Com MSR 20 Network Router User Manual


 
SIC-1SAE 27
Figure 15 RS449 DCE cable
RS530 DTE cable
Figure 16 RS530 DTE cable
RS530 DCE cable
Figure 17 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.
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These cables are optional items. Please select one when purchasing a SIC-1SAE
card; by default, the cable is not provided.
Connecting the Interface
Cable
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WARNING:
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.
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.