10 Facts About Modular connector

Modular connector is a type of electrical connector for cords and cables of electronic devices and appliances, such as in computer networking, telecommunication equipment, and audio headsets.

The term modular connector arose from its original use in modular wiring components of telephone equipment by the Western Electric Company in the 1960s.

Likewise, the 4P4C Modular connector is sometimes called RJ9 or RJ22 though no such official designations exist.

For example, a Modified Modular connector Jack using an offset latching tab was developed by Digital Equipment Corporation to prevent accidental interchange of data and telephone cables.

Four-position four-conductor connector is the standard modular connector used on both ends of telephone handset cords, and is therefore often called a handset connector.

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The Modular connector provided power to the keyboard on the outer two contacts and received data signals on the inner pair.

Modular connector plugs are described by the maximum number of physical contact positions and the actual number of contacts installed in these positions.

Pins of the 6P6C Modular connector are numbered 1 to 6, counting left to right when holding the Modular connector tab side down with the opening for the cable facing the viewer.

However, with German domestic telephone equipment, and that in some neighboring countries, 6P4C plugs and sockets are typically only used to connect the telephone cord to the phone base unit, whereas the mechanically different TAE Modular connector is used at the other end to connect to a service provider interface.

The Modular connector is used in other telecommunications connections, including ISDN and T1.