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Connector pin assignments
Maintenance and Service Guide 9–5
RJ-11 (modem, select models only)
RJ-45 (network)
Pin Signal
1 Unused
2 Tip
3 Ring
4 Unused
5 Unused
6 Unused
Pin Signal
1 Transmit +
2 Transmit -
3 Receive +
4 Unused
5 Unused
6 Receive -
7 Unused
8 Unused