Modem); Network); Rj-11 (Modem); Rj-45 (Network) - HP Compaq 2230s Maintenance And Service Manual

RJ-1 1 (modem)
Pin
1
2
3
4
5
6

RJ-45 (network)

Pin
1
2
3
4
5
6
7
8
Connector pin assignments
Signal
Unused
Tip
Ring
Unused
Unused
Unused
Signal
Transmit +
Transmit -
Receive +
Unused
Unused
Receive -
Unused
Unused
9–4