Apple Macintosh Performa 6360 Series - Manual (Page 9)

You can use any standard phone cord to connect your internal modem
connector to a phone jack. If you have only one phone jack, consider
purchasing a line splitter at an electronics supply store. A line splitter enables
you to plug your phone and your modem into the same jack at the same time.
Keep in mind that when your phone and your modem share a single phone
line, you will not be able to use both pieces of equipment at the same time,
even if they are attached to separate phone jacks. While you use your modem,
outside callers will get a busy signal and you cannot call out. When your
phone is in use, you cannot use the modem. (By the way, you can keep your
answering machine connected to your phone, even if your phone and modem
share the same telephone line.)
IMPORTANT During lightning storms, disconnect your modem by unplugging
the phone cord from the phone jack to prevent voltage overload.
External modem port
(This port is covered if an
internal modem is installed.
If it is covered, do not
remove the cover or plug
anything into the external
modem port.)
To telephone
Line splitter (purchased separately)
To internal modem
Internal modem connector Phone cord Phone jack in wall
9 Getting Started