... to RJ45 plug Telephone RJ45 Modular plug into 4 8P2C Jack with extension cord*Allows for easy connection of 4 devices ... , 8P8C 2) Modular duplex jack: 6P2C, 6P4C, 6P6C, 8P8C 3) Modular adapter: 3 ways 6P4C4) Modular surface jack box : 6P4C, 6P6C5) Economy type ... mall jack: 6P2C, 6P4C, 6P6C6) Duplex modular: 6P4C 7 ...