пользователь 1
Category 7/Category F (ISO/IEC 11801:2002) specifies fully shielded twisted pair cables with a frequency range of 1-600 MHz over 100 meters. It contains four individually shielded pairs in an overall shield, called shielded/foil twisted pair (S/FTP) or foil/foil twisted pair (F/FTP). There is a pending class Fa, based on using an S/FTP cable to ...