3Com ISDN Modem manual 1Installing the Isdn Cable, Installing Analog Equipment

Installing the ISDN Cable 2-5

1Installing the ISDN Cable

To install the ISDN cable:

1Connect the RJ-45 (8-pin) connector end of the RJ-45/RJ-11 ISDN cable to the RJ-45 ISDN line port labeled ISDN U on the 3C882 ISDN modem’s back panel, as shown in Figure 2-5.

U

	-232	ISDN
RS

2

1

RESET

9VDC

. 5A MAX

Figure 2-5 ISDN Cable Connection

2Connect the RJ-11 (6-pin) connector end of the RJ-45/RJ-11 ISDN cable to the RJ-11 ISDN wall jack.

CAUTION: An NT1 is built into the 3C882 ISDN modem. Never connect the 3C882 ISDN modem ISDN port to a standard analog telephone jack or to an external NT1 device. Make sure that it is connected directly to the ISDN jack.

Installing Analog Equipment

You can connect an analog touch-tone telephone, answering machine, fax machine, or external analog modem to the 3C882 ISDN modem.

You will need an RJ-11 to RJ-11 cable for each analog phone port connection.

To install an analog device:

1.