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Installing the 3Com Impact Digital Modem
5
CAUTION:
The 3Com Impact digital modem is designed to
operate with Basic Rate ISDN 2B1Q U Interface network
terminations. An internal Network Termination device (NT1) is
built into the digital modem. Do not connect the 3Com
Impact digital modem ISDN port to a standard analog
telephone jack or to an external NT1 device. Make sure that it
is connected to the ISDN jack.
8
Turn on the 3Com Impact digital modem by toggling the
power switch on the back panel to the On position.
9
Turn on the computer’s power switch.
10
Go to the section “Configuration for IBM PC or Compatible
Computer” to configure the 3Com Impact digital modem for
your computer.
Installing the Digital Modem in an Apple Macintosh
Computer
To install the 3Com Impact digital modem in an Apple
Macintosh computer, follow these steps:
1
Turn off the computer.
2
Insert the 9-pin male end of the 3Com Impact digital
modem-to-Macintosh serial signal cable into the
connector labeled Computer on the digital modem’s back
panel and tighten the connector screws.
3
Connect the other end of the 3Com Impact digital
modem-to-Macintosh serial signal cable to the serial
communications port on the back of the Macintosh.
The serial communications port is the mini-DIN, 8-pin serial
port connector, indicated on the Macintosh connector panel
by the telephone handset imprint.
4
Connect the 3Com Impact digital modem power cable to
the connector marked 12V AC on the back panel of the
digital modem.
09-0700-002 Page 5 Sunday, December 22, 1996 3:40 PM