How do I wire a cable to connect a DEC VT terminal with an MMJ jack to an ETSP or other Lantronix server with an RJ45 serial port?
The DEC VT terminals with MMJ jacks use the same pinout as our older RJ/MMJ 6 wire terminal servers: RJ12/MMJ DSR 6 RX+ 5 RX- 4 TX- 3 TX+ 2 DTR 1 When looking at the RJ12/MMJ socket with the notch for the locking tab facing down the pins are numbered 1-6 left to right: 123456 [||||||] [ ] [__ _] |__| As shown in Figure C-1 Appendix C of the ETS8/16P and ETS16/32PR Installation Guide on your Lantronix CD and on the Product Manuals page of http://www.lantronix.com the pinouts of our RJ45 terminal servers are: RJ45 CTS 8 DSR 7 RX+ 6 RX- 5 TX- 4 TX+ 3 DTR 2 RTS 1 When looking at the RJ45 socket with the notch for the locking tab facing down the pins are numbered 1-8 left to right: 12345678 [||||||||] [ ] [__ __] |__| If you’re using Xon/Xoff flow control you only need the middle 4 wires so you could wire a cable to a VT terminal with an MMJ like this: Cable Terminal RJ45 RJ45 (Swapped) MMP MMJ CTS 8 NC DSR 7 NC NC 1 DTR RX+ 6 6—————-2 2 TX+ RX- 5 5—————-3 3 TX- TX- 4 4-
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