Any of a variety of different types of plugs or jacks used to connect telephones and telephone equipment to wall outlets. See, in particular, RJ-11. See also Modified Modular Jack. Modular jack is often abbreviated MJ.
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Any of a variety of different types of plugs or jacks used to connect telephones and telephone equipment to wall outlets. See, in particular, RJ-11. See also Modified Modular Jack. Modular jack is often abbreviated MJ.