How to splice phone wires

Written by jonra springs | 13/05/2017
How to splice phone wires
Splice phone wires for junctions or repairs. (secretary telephone image by Maksim Shebeko from

Separate telephone wires are often connected together for the sake of adding a new phone line or repairing a cut cord. The wires may be joined by way of a splice, but not the type used for electrical wiring. Telephone wires must be protected against exposure to air, which can corrode the wire and create static in voice transmission and reception. Special crimp connectors with insulating gel make phone wire splices that are protected against static for years of service.

Clip the ends off the telephone wires to be joined. Leave a straight cross cut on the ends without stripping the wires. The inside of the connector will slice away the insulation for the splice connection.

Push the first wire into a port on the phone wire connector. Force the wire into the port until it stops against the inside. Insert the other wire, or wires, to be connected in the same fashion. Splice connectors are made to join two or three telephone wires together.

Grip the coloured cap and the flat-bottomed side of the connector in the jaws of pliers. Slowly squeeze the pliers together to crimp the connection and release the insulating gel around the wires inside.

Join as many telephone wires together as needed with splice connectors for the repair or new phone line. Test the telephone wiring by plugging the wires into a phone and listening for a clear connection.

Things you need

  • Telephone wire connectors
  • Wire cutters
  • Pliers

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