3Com 3C13701, Руководство по установке

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2-Port ISDN S/T SIC 19
Figure 16 V.35 DTE Cable
Figure 17 V.35 DCE Cable
To avoid damage to the equipment and ports, do not insert or unplug the serial
cables when the router is powered on.
To connect the cable to the 1-Port Serial SIC:
1 Power off the router
2 Insert the DB-50 connector of the synchronous/asynchronous serial port cable into
the DB-50 port on the 1-Port Serial SIC.
3 Connect the other end of the serial interface cable to one of the following devices:
■
A CSU/DSU if the WAN is a leased line.
■
The serial port of the analog modem if the WAN is a dialing line.
4 Power on the router, and check the corresponding LED on the front panel of the
router. If the LED is green, the SIC passed the POST and can operate normally. If
the LED is OFF, the SIC failed the POST. In this case, contact your Service
representative.
5 Check the status of the LINK LED on the 1-Port Serial SIC panel. If the LINK LED is
green, the link is connected. If the LINK LED is OFF, the link is not connected. In
this case, check the cable and its connections.
2-Port ISDN S/T SIC
The main functions of the 2-port ISDN S/T SIC are to transmit and process the ISDN
BRI S/T data stream on 2 channels. The 2-port ISDN S/T SIC has both dialing and
leased line operating modes.
2-port ISDN U SIC
The main functions of the 2-port ISDN U SIC are to transmit and process 2
channels of ISDN BRI U data stream.
The 2-port ISDN U SIC has both dialing and leased line operating modes.
Enlarged A side Enlarged B side
DB50 Male
V.35 Male
Label
Enlarged A side
DB50 Male
V.35 Female
Label
Enlarged B side