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Communications Wiring - Voice/Data
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R - Ring - 48 volts Ringing voltage is usually 88-110Vac, 20 Hz superimposed on -48Vdc. Source: RJ11, RJ14, RJ25 - Wikipedia Data - Ethernet
Ethernet Wiring 8 Position 8 Contact (8P8C) (often incorrectly referred to as RJ45) 10Base-T and 100Base-TX TIA/EIA T-568B - Most Common pin color function 1 wh/or TxData + 2 or TxData - 3 wh/grn RecvData+ 4 blu 5 wh/blu 6 grn RecvData- 7 wh/brn 8 brn TIA/EIA T568A (Transmit and receive colors reversed) Based on original AT&T USOC (Universal Service Order Codes) standard pin 1 TD+ white/green 2 TD- green 3 RD+ white/orange 4 blue 5 white/blue 6 RD- orange 7 white/brown 8 brown A cable wired with 568A at one end and 568B at the other is a crossover cableStandards: - International Standards (ISO/IEC 11801:1995) for structured cabling systems - Telecommunications Industry Association (TIA) - The Electronic Industries Alliance (EIA) is a trade organization representing the United States high technology community, sponsoring technical standards
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