Interlogix NS2051-4P/1T - Manual (Page 25)

IFS MC251-4P/1S and NS2051-4P/1T User Manual 21
When connecting to other Ethernet equipment such as a
Router, Bridge, Switch, or Hub, please refer to that device’s
Technical Manual.
RJ45 Pin Assignments
10/100Mbps, 10/100Base-TX
RJ-45 Connector pin assignment
Contact
MDI
Media Dependant
Interface
MDI-X
Media Dependant
Interface -Cross
1 Tx + (transmit) Rx + (receive)
2 Tx - (transmit) Rx - (receive)
3 Rx + (receive) Tx + (transmit)
4, 5 Not used
6 Rx - (receive) Tx - (transmit)
7, 8 Not used
RJ45 Cable Drawing
The following figure shows the pin allocation and color of a
straight cable, and connection of a crossover cable.