Universal Wiring Harness designed to work with any 568A or 568B Network Cabling Plan 12 inch in length and designed to split a standard single Ethernet cable into 4 separate circuits so as to avoid running additional cables for expansion. Typically, the male plug of one EZ80003232 Cheater Cord is inserted into an outlet on the “House” Patch Panel near the data switch or router . Then, the 4 jacks of the cord are fed by 4 different signals such as 2 digital PBX extension circuits that use Pins 3 6 like Panasonic PBX systems and 2 Generic Single Line Telephones or Single Central Office Trunks. Another EZ80003232 Cheater Cord is then plugged into the wall outlet at the destination location where it's broken down into 4 separate jacks and 4 separate circuits again. Jack #1 Pins 4 5 = ANALOG Generic Single Line Telephone os Single Central Office Trunk Jack #2 Pins 3 6 = DIGITAL Panasonic Compatible Digital Telephones Jack #3 Pins 4 5 = ANALOG Generic Single Line Telephone os Single Central Office Trunk Jack #4 Pins 3 6 = DIGITAL Panasonic Compatible Digital Telephones