Abstract: A telephone extension socket comprising a housing having opposed end portions, an entry formed in one end portion to receive a telephone cable having a plurality of electrically separate wires and a socket formed in the other end portion to receive a multi-contact plug, a plurality of recesses in the housing for the respective reception of the individual wires of the telephone cable, and a plurality of electrical contacts each in the form of a resilient metal strip and each having a first end which projects into a respective recess and which has a formation serving to engage a corresponding wire of the telephone cable, and a second end projecting into the socket end for engagement with a corresponding contact of a multi-contact plug.