Sony PCV-RS100 - Manual (Page 28)

VAIO Computer System Reference Manual 12
Microphone, Headphones, and Line In Jacks
The microphone, headphones, and line in jacks are physically identical,
but have different connections. They are standard 3.5 mm stereo mini-
jacks.
Telephone and Modem Line Jacks
The telephone and modem line jacks are physically identical and have
identical connections. They are standard RJ-11 female phone jacks.
However, the modem line jack is for connecting a telephone line that
comes from the wall to the computer, and the telephone jack is for
connecting the telephone to a computer
.
Connector Description
Microphone Electret condenser microphone input.
Headphones 1.0 Vrms (typical).
Line In 1.0 Vrms (typical), 10 Kohm impedance.
Microphone Headphones Line In
Telephone Modem
Line Line