(Registered Jack 61) is a physical interface often used for terminating twisted pair type cables. This pinout is for multi-line telephone use only; is unsuitable for use with Ethernet over twisted pair (10BASE-T, 100BASE-TX and1000BASE-T) because the pins for pairs 3 and 4 are too widely spaced. The following schematic shows the and .

RJ61 Pinout Diagram


RJ61 Wiring Color Code

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