3-9
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Crossover cable, at both ends of which, wires are crimped in the RJ-45 connectors in different
sequences. The cable connects the same category of devices, such as PC to PC or PC to router.
You can make crossover cables yourself as needed.
In making network cables, shielded cables are preferred for electromagnetic compatibility sake.
Connecting the Ethernet cable
Follow the steps below to connect an Ethernet cable:
Step 1: Connect one end of the Ethernet cable to an Ethernet port on the router and the other end to
another device.
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For a 10/100 Mbps port provided by the RPU, connect it to a PC or another router using a
crossover cable or to a Hub or LAN switch using a straight-through cable.
Step 2: View the LINK LED of the Ethernet interface: ON means a link is present.
Connecting AUX to a Modem
AUX port
AUX is an RS232 asynchronous serial interface, which can back up a WAN interface and provide dial
connection. In case of console failure, AUX can function as a console interface.
AUX cable
AUX cable is an eight-wire shielded cable. At one end of the cable is an RJ-45 connector for connecting
the console port on the router. At the other end are DB-9 (male) connector and DB-25 (male) connector.
You can plug either of them into the serial port on a modem as needed.
Figure 3-9
AUX cable
Connecting the AUX cable
Follow these steps to connect the AUX cable.
Step 1: Plug the RJ-45 connector of the cable into the AUX port on the main board.
Step 2: Plug the DB-25 or DB-9 connector into the serial port on the analog modem.
