Telebrás plug

The Telebrás plug is the old Brazilian telephone plug and socket system. It uses a large plug (about 4 cm x 4 cm) with 2 flat metal pins + 2 flat plastic pins. Three of the pins have the same orientation and the fourth pin being rotated 90 degrees to make it impossible to plug in the wrong orientation.

A Telebrás plug with two metal pins and two plastic pins.

Most newer installations use an RJ11 jack and plug instead of Telebrás.

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