Strange Electrical Plug? Phone Jack? Four Prong Outlet Explained!
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Splicing phone Wire - Redheads & Rat Rubbers
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How to Repair Telephone Cord RJ11 Change Broken Plug and Phone Extension Cord
A telephone jack and a telephone plug are electrical connectors for connecting a telephone set or other telecommunications apparatus to the telephone wiring inside a building, establishing a connection to a telephone network. The plug is inserted into its counterpart, the jack, which is commonly affixed to a wall or baseboard. The standards for telephone jacks and plugs vary from country to country, though the 6P2C style modular plug has become by far the most common type.