Trilogy Communications Commander Installation Manual page 59

7.4.1.2 ISDN Interface RJ45 Connector
RJ45 Fixed Socket
7.4.1.3 Com Port
D9, not yet supported, for future development.
7.4.1.4 Remote Ports
Each input is the cathode of the LED on an opto-isolator. The anode is connected through a
470R resistor to +5VDC. Therefore to activate a control input, short the pin to ground, i.e. pin
10. Each output is the open collector of a ULN2003 driver chip. Therefore connect the pin
through load to +5VDC.
7.4.1.5 RJ45
This is the ISDN 2 connector. This must only be connected to an approved ISDN 2
connection or serious damage may occur.
Trilogy Communications Limited
Commander Installation Guide
Pin 1 Not connected
Pin 2 Not connected
Pin 3 Tx to network A/Rx from terminal A
Pin 4 Rx from network A/Tx to terminal A
Pin 5 Rx from network B/Tx terminal B
Pin 6 Tx to network B/Rx from terminal B
Pin 7 Not connected
Pin 8 Not connected
Issue 9.1
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