CableWholesale Cable Phone and Data RJ11 Crimp Connectors for Stranded Wire, 6P4C, 50-Pieces (31D0-6P4CS) RJ11 plugs are a type of plug typically used for carrying telephone signals 6P4C means that the contacts on these plugs have 6 positions in which are placed 4 gold plated contacts, a standard for RJ11 jacks Gold plated leads for better data transmitting and higher signal strength.