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MMJ=Modified Modular Jack
Invented by Digital Equipment Corporation (DEC) (now: Compaq)

MMJ FEMALE CONNECTOR (at the devices)
MMJ FEMALE CONNECTOR (at the cables)

MMJ FEMALE CONNECTOR at the devices.
MMJ MALE CONNECTOR at the cables.

Pin Name Description
1 DTR Data Terminal Ready
2 TXD+ Transmit Data +
3 TXD- Transmit Data -
4 RXD+ Receive Data +
5 RXD- Receive Data -
6 DSR Data Set Ready

Contributor: Joakim Ögren


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May be copied and redistributed, partially or in whole, as appropriate.
Document last modified: 2001-06-07