Registered Jack (RJ) 11 connectors are traditionally used for connecting telephones to the POTS network. These connectors rely on just 4 wires that connect what is referred to as tip and ring.
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What does POTS stand for and what is its significance?
What are 'tip' and 'ring' in the context of RJ11 connectors?
What distinguishes RJ11 connectors from RJ45 connectors?