Patch Panel near the data switch or router.
Then, the 4 jacks of the cord are fed by 4 different signals such as digital PBx extension circuits that use Pins 3 & 6 like Panasonic PBx systems.- Jack #1: Pins 3 & 6 = DIGITAL Panasonic Compatible Digital Telephones- Jack #2: Pins 3 & 6 = DIGITAL Panasonic Compatible Digital Telephones- Jack #3: Pins 3 & 6 = DIGITAL Panasonic Compatible Digital Telephones- Jack #4: Pins 3 & 6 = DIGITAL Panasonic Compatible Digital Telephones.Splits a 4-Pair Cable into 4 Panasonic Digital Extension Ports- 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.