RJ11 1 to 5 Female Connectors Type: 6p4c,The RJ11 plugs are suitable for telephone lines in home or office.Can work with 6p2c Phone Splitter Adapter RJ11 Phone Jack converters 1to5,ADSL DSL Fax Phone Sharing Jointer Adapter Five Way Telephone Splitters,Phone convrtor,RJ11 RJ12 Jack,Telephone plug 1 unit