36 SNMP for Ethernet and Token Ring Systems
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RJ-12 6-Wire Phone-Type Jack
TxD
RxD
SG
Not connected
Wire 2
Wire 3
Wire 5
Wire 1, 4, 6
If you are building or using your own cable, do not connect wires 1 and 6.
If wire 1 or 6 is grounded, you will get a fault error.