The RCA white In-Line Cord Coupler connects 2 phone cords together for extended length. The four wire telephone jacks work with all 2- or 4-wire systems. more
Phone line cord with connectors can be used with all 2 or 4 wire systems. The cord has a variety of possible uses such as connecting 2 telephone devices together connecting a telephone device to a wall jack or as an extension cord. Standard phone... more
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