nthaih
09-24-2009, 11:17 PM
Cá bác cho em hỏi các loại đầu RJ 12,RJ 48,RJ 49,RJ 46,RJ 47 dùng để làm gì ạ.Cám ơn mấy bác trước
View Full Version : Mấy bác giúp em với!!!!!!!!!!
andrew
09-27-2009, 03:05 PM
Cá bác cho em hỏi các loại đầu RJ 12,RJ 48,RJ 49,RJ 46,RJ 47 dùng để làm gì ạ.Cám ơn mấy bác trước
Lên google mà search bạn ạ. Còn nữa, bạn có thể lên wikipedia.com để tìm.
Lên google mà search bạn ạ. Còn nữa, bạn có thể lên wikipedia.com để tìm.
ngoisaocodon
09-28-2009, 11:16 PM
Bạn xem ở đây http://en.wikipedia.org/wiki/Registered_jack
RJ2MB: 50-pin miniature ribbon connector, 2-12 telephone lines with make-busy (http://ictvietnam.net/w/index.php?title=Make-busy&action=edit&redlink=1)
RJ11 (http://ictvietnam.net/wiki/RJ11)C/RJ11W: 6P2C, for one telephone line (6P4C with power on second pair)
RJ12 (http://ictvietnam.net/wiki/RJ12)C/RJ12W: 6P6C, for one telephone line ahead of the key system (key telephone system (http://ictvietnam.net/wiki/Key_telephone_system))
RJ13C/RJ13W: 6P4C, for one telephone line behind the key system (key telephone system (http://ictvietnam.net/wiki/Key_telephone_system))
RJ14 (http://ictvietnam.net/wiki/RJ14)C/RJ14W: 6P4C, for two telephone lines (6P6C with power on third pair)
RJ15C: 3-pin weatherproof, for one telephone line
RJ18C/RJ18W : 6P6C, for one telephone line with make-busy arrangement
RJ21 (http://ictvietnam.net/wiki/RJ21)X: 50-pin miniature ribbon (http://ictvietnam.net/wiki/Micro_ribbon) connector, for up to 25 lines
RJ25 (http://ictvietnam.net/wiki/RJ25)C/RJ25W: 6P6C, for three telephone lines
RJ26X: 50-pin miniature ribbon connector, for multiple data lines, universal
RJ27X: 50-pin miniature ribbon connector, for multiple data lines, programmed
RJ31 (http://ictvietnam.net/w/index.php?title=RJ31&action=edit&redlink=1)X: 8P8C (although usually only 4C are used), Often incorrectly stated as allowing alarm (fire and intrusion) equipment to seize a phone line, the jack is actually used to disconnect the equipment from the phone line while allowing the phone circuit to continue to the site phones.
RJ38X: 8P8C, similar to RJ31X, with continuity circuit
RJ41S: 8P8C keyed, for one data line, universal
RJ45S: 8P2C + keyed, for one data line with programming resistor
RJ48 (http://ictvietnam.net/wiki/RJ48)S: 8P8C, for four-wire data line (DDS)
RJ48C: 8P8C, for four-wire data line (DSX-1)
RJ48X: 8P8C with shorting bar, for four-wire data line (DS1)
RJ49C: 8P8C, for ISDN (http://ictvietnam.net/wiki/ISDN) BRI via NT1
RJ61 (http://ictvietnam.net/wiki/RJ61)X: 8P8C, for four telephone lines
RJ71C: 12 line series connection using 50 pin connector (with bridging adapter) ahead of customer equipment. Mostly used for call sequencer equipment.
RJ2MB: 50-pin miniature ribbon connector, 2-12 telephone lines with make-busy (http://ictvietnam.net/w/index.php?title=Make-busy&action=edit&redlink=1)
RJ11 (http://ictvietnam.net/wiki/RJ11)C/RJ11W: 6P2C, for one telephone line (6P4C with power on second pair)
RJ12 (http://ictvietnam.net/wiki/RJ12)C/RJ12W: 6P6C, for one telephone line ahead of the key system (key telephone system (http://ictvietnam.net/wiki/Key_telephone_system))
RJ13C/RJ13W: 6P4C, for one telephone line behind the key system (key telephone system (http://ictvietnam.net/wiki/Key_telephone_system))
RJ14 (http://ictvietnam.net/wiki/RJ14)C/RJ14W: 6P4C, for two telephone lines (6P6C with power on third pair)
RJ15C: 3-pin weatherproof, for one telephone line
RJ18C/RJ18W : 6P6C, for one telephone line with make-busy arrangement
RJ21 (http://ictvietnam.net/wiki/RJ21)X: 50-pin miniature ribbon (http://ictvietnam.net/wiki/Micro_ribbon) connector, for up to 25 lines
RJ25 (http://ictvietnam.net/wiki/RJ25)C/RJ25W: 6P6C, for three telephone lines
RJ26X: 50-pin miniature ribbon connector, for multiple data lines, universal
RJ27X: 50-pin miniature ribbon connector, for multiple data lines, programmed
RJ31 (http://ictvietnam.net/w/index.php?title=RJ31&action=edit&redlink=1)X: 8P8C (although usually only 4C are used), Often incorrectly stated as allowing alarm (fire and intrusion) equipment to seize a phone line, the jack is actually used to disconnect the equipment from the phone line while allowing the phone circuit to continue to the site phones.
RJ38X: 8P8C, similar to RJ31X, with continuity circuit
RJ41S: 8P8C keyed, for one data line, universal
RJ45S: 8P2C + keyed, for one data line with programming resistor
RJ48 (http://ictvietnam.net/wiki/RJ48)S: 8P8C, for four-wire data line (DDS)
RJ48C: 8P8C, for four-wire data line (DSX-1)
RJ48X: 8P8C with shorting bar, for four-wire data line (DS1)
RJ49C: 8P8C, for ISDN (http://ictvietnam.net/wiki/ISDN) BRI via NT1
RJ61 (http://ictvietnam.net/wiki/RJ61)X: 8P8C, for four telephone lines
RJ71C: 12 line series connection using 50 pin connector (with bridging adapter) ahead of customer equipment. Mostly used for call sequencer equipment.
