Phone jack

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Phone jack can refer to:

• Telephone jack - A connection system for telephone equipment. See Telephone plug.
• TRS connector (or jack plug, audio jack, stereo jack etc.) - An audio connector. ("Phone jack" is the original term, as TRS connectors were created for US telephone switchboards).
• Phone jack is sometimes confused with phono jack, an alternative name for RCA connectors. (The name "phono jack" is derived from their use on phonographs).

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