3Com Router Module Guide
Chapter 2 Smart Interface Cards
2-6
Description
Attribute
Synchronous
Asynchronous
Supported service
DDN leased line
Terminal access
Backup
Modem dial-up
Dumb terminal
access
Asynchronous
leased line
Backup
2.2.4 Interface LEDs
ROUTER 1-PORT SERIAL SIC panel is shown in the following figure:
Figure 2-4
ROUTER 1-PORT SERIAL SIC panel
The status description of the LEDs on ROUTER 1-PORT SERIAL SIC panel is listed in
the following table:
Table 2-6
Description of the LEDs on ROUTER 1-PORT SERIAL SIC panel
LINK
OFF means no link is present; ON means a link is present.
ACT
OFF means no data is being transmitted or received; blinking means data is being
received or/and transmitted.
2.2.5 Interface Cable
ROUTER 1-PORT SERIAL SIC interface cables are synchronous/asynchronous serial
interface cables that fit into four types:
z
V.24 (RS232) DTE cable, with DB25 (male) connector at the network end;
z
V.24 (RS232) DCE cable, with DB25 (female) connector at the network end;
z
V.35 DTE cable, with 34PIN (male) connector at the network end;
z
V.35 DCE cable, with 34PIN (female) connector at the network end.
