# DEC MMJ

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

(at the devices)
(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

Source:
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Copyright © The Hardware Book Team 1996-2001.
May be copied and redistributed, partially or in whole, as appropriate.
Document last modified: 2001-06-07