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
This DSL filter filters out interference from DSL or alarm systems that share your phone line. High speed installation prevents interference with phone equipment. Home communication DSL phone line filter & tester Filters interference from DSL or alarm... more
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