Toshiba Satellite R20-ST2081 User Manual page 127

1 Plug one end of a telephone cable (purchased separately) into
the modem port on the back of the computer.
(Sample Illustration) Connecting the telephone cable to the
modem port
2 Connect the other end to the RJ-11 wall jack.
(Sample Illustration) Connecting to a wall jack
Connect the built-in modem only to ordinary analog phone
NOTE
lines.
Never connect the built-in modem to a digital line (ISDN).
Never connect the built-in modem to the digital connector on a
public telephone or to a digital private branch exchange (PBX).
Never connect the built-in modem to a key telephone system
for residences or offices.
Connection to any communication line other than an analog
phone line could cause a computer system failure.
Now you are ready to send a fax or use the modem to connect
to an online service or the Internet.
Exploring Your Computer's Features
Setting up for communications
127