3Com 3018 (3C13618), 3015 (3C13615), 3013 (3C13613), 3012 (3C13612) manual Verifying, Installation

Verifying the Installation 27

Connecting to the ISDN The Router 3013 router has an ISDN S/T port and the Router 3015 router has an BRI Port ISDN U port. These routers perform data transfer in 2B+D mode and support both

ISDN dial-up and leased line. See Table 15 on page 14 for the ISDN port attributes.

The ISDN S/T cable is a 4-core twisted pair cable. Both ends of the cable have RJ-45 connectors. The 3-pin and 6-pin connectors are at the sending end, and the 4-pin and 5-pin connectors are at the receiving end.

The ISDN U cable is a 2-core twisted pair cable. One end has an RJ11 connector and the other end has an output terminal (OT) connector.

For illustrations and pinout details of the ISDN BRI cables, see Appendix A.

To connect the ISDN BRI port:

1Turn off power to the router.

CAUTION: Identify the router model and the ISDN BRI mark on the port when making the connection. Plugging the connector in incorrectly can cause damage to the router

2Confirm the type of ISDN line provided by the telecommunications service provider.

3Connect the cable. For the Router 3013:

a If the line is ISDN U, use an NT1 adapter. Insert one end of the S/T cable into the S/T port of the NT1, and the other end into the ISDN BRI port of the router.

b If the line is ISDN S/T, insert the cable directly into the ISDN BRI port of the router

For the Router 3015, the line must be ISDN U.

Connect the RJ-45 connector to the ISDN BRI port of the router, and connect the output terminal (OT) end to the ISDN line through a telephone adapter.

Verifying the	Verify whether the router has been correctly installed by checking the following
Installation	items:
	■ There is airflow around the router
	■ Power is connected correctly
	■ The ground wire of the router is correctly connected
	■ The router is connected to other devices, such as the console terminal