Sony PCV-RX570 System Reference Manual - Page 24

12 VAIO Digital Studio System Reference Manual Mic, Line In, and Headphones Jacks The microphone, line in, and headphones jacks are physically identical, but have different connections. They are standard 3.5 mm stereo mini-jacks. Headphones Line In Mic Connector Headphones Mic Line In Description 1.0 Vrms (typical). Electret condenser microphone input. 1.0 Vrms (typical), 10 Kohm impedance. Telephone and Line Jacks The telephone and line jacks are physically identical and have identical connections. They are standard RJ-11 female phone jacks. However, the line jack is for connecting to a telephone line that comes from the wall, and the telephone jack is for connecting the computer to a telephone. Your computer has only one RJ-11 female phone jack if you have a HomePNA modem installed. The modem installed on your computer may differ depending on the configuration you purchased. Line Phone ✍ Accidentally plugging a phone line from the wall into the modem's telephone jack, and a telephone into the line jack, does not damage the modem card or telephone equipment. However, the modem will not work correctly.