Apple PowerBook (3400 series) - Manual (Page 177)

5 To use your Ethernet connection, open the AppleTalk control panel and choose Ethernet
from the “Connect via” pop-up menu.
If you want to use a TCP/IP-based application, you may want to make sure
that the TCP/IP control panel is configured appropriately.
For more detailed instructions on using the network control panels, see the
Networks topic area of Mac OS Guide, available in the Guide (
h) menu.
Connecting a telephone line to the expansion slot card
Follow these steps to connect a standard telephone line to the card in
your PowerBook:
1 With the PowerBook shut down, open the cover on the computer’s back panel and verify
that your computer has a card with a modular connector.
You can check the label on the inside of the cover to determine that the card
provides a modem.
2 Connect one end of a modular telephone cord that came with your computer to the wall
socket for a residential phone line.
IMPORTANT Make certain that the phone line is the standard residential line,
not a digital line. Connecting a digital line to your modem card could damage
it. Also, you must use a single-line telephone cord (supplied with your
computer if a modem card was preinstalled) to connect to the telephone line.
A single-line phone cord has only two wires visible in the plastic connector
(as opposed to the commonly used four-wire cord).
2 visible wires
Single-line telephone cord
177 Making Modem and Ethernet Connections