3com 3012 (3C13612) 사용자 설명서

To connect the Ethernet cable:

1 Turn off power to the router.

2 Select the Ethernet cable.

When connecting the router with a PC or a router, use the crossover network 
cable.

When connecting the router to a hub or a LAN switch, use the straight-through 
network cable.

3 Connect one end of the Ethernet cable to the appropriate Ethernet module on the 

router.

4 Connect the other end of the Ethernet cable to the Ethernet port of the network 

device. 

5 Verify the connection by checking that the 100M ETH LED on the top of the router 

is on.

The Router 3000 series routers provide the following WAN ports:

■

AUX port (all models)

■

Mutiprotocol synchronous/asynchronous serial port (Router 3012, Router 
3013, Router 3015)

■

ISDN S/T port (Router 3013)

■

ISDN U port (Router 3015)

■

CT1/PRI port (Router 3016)

■

E1/CE1/PRI port (Router 3018)

See Chapter A for illustrations and pinout details of all WAN port cables.

The auxiliary (AUX) port is an EIA/TIA-232-compliant synchronous/asynchronous 
serial port that is used for remote configuration or dial-up backup. To connect the 
router to a remote device, a local modem must be connected to a remote modem 
through PSTN. For the connection method, see Chapter 3. For the AUX port 
specifications of each router, see Chapter 1.

To connect the AUX cable:

1 Turn off power to the router.

2 Plug the RJ-45 connector of the AUX cable into the AUX port of the router.

3 Connect the DB-25 or DB-9 adapter of the AUX cable to the serial port of the 

analog modem.

For pinout details of the AUX cable, see Appendix A.

The serial port is usually used to connect the router to DSU/CSU. For the serial port 
specifications of each router, see Chapter 1.