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6 pin MMJ female connector layout
6 pin MMJ female connector
MMJ=Modified Modular Jack. Invented by Digital Equipment Corporation (DEC) (now: Compaq)
Pin Name Description
1DTRData Terminal Ready
2TXD+Transmit Data +
3TXD-Transmit Data -
4RXD-Receive Data -
5RXD+Receive Data +
6DSRData Set Ready
6 pin MMJ male connector layout
6 pin MMJ male connector
According to 2 reports in our database (2 positive and 0 negative) the DEC MMJ pinout should be correct.

Is this pinout
Source(s) of this and additional information: Hardware Book
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