Serial interface (RJ11)
RJ11
Empty
RS-232
4-wire connector, usually for POTS/telephony

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The info found in this page might not be entirely correct. Check out this guide to learn how you can improve it.
4-wire connector, usually for POTS/telephony
Disclaimer
The info found in this page might not be entirely correct. Check out this guide to learn how you can improve it.