1.Inline coupler and duplex coupler, telephone accessory 2.Duplex modular: 6P4C 3.Color: white and ivory Detailed Selling ... , 6P4C, 6P6C, 8P8C 2.Modular duplex jack: 6P2C, 6P4C, 6P6C, 8P8C 3.Modular adapter: 3 ways 6P4C4. Modular surface jack: 6P4C, 6P6C5 ... .Economy type mall jack: 6P2C, 6P4C, 6P6C6.Duplex modular: 6P4C 7.Color: white and ivory Telephone Accessory with 2 ...