Phone Jack Splitter for Landline Telephone RJ11 6P4C 2 Way Adapter (1 Splitter +
3 Female RJ11 (6P4C) Sockets. Four-Conductor (6P4C) Socket - Allows for Operation of a 2-Line Phone. 3 Female RJ11 Sockets. We specifically made straight-wired connections to support both Voice and Data.