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RJ45 to RJ11 Cable Diagram: Pinout Guide and Wiring Instructions

"An RJ45 to RJ11 cable connects an 8-pin modular connector (8P8C) to a 4-pin or 6-pin telephone plug (6P4C/6P2C). For standard analog voice or DSL telephone connections, wire the central telephone pair from RJ11 pins 2 and 3 (or 3 and 4 on a 6P6C plug) directly to the primary center pair of the RJ45 connector, pins 4 and 5. Wiring an RJ45 to RJ11 cable bridges traditional telephone equipment, analog modems, and DSL interfaces with modern twisted-pair structured cabling systems. While both modular connectors appear superficially similar, they differ in physical dimensions, contact counts, electrical signals, and functional limits. Connecting an..."

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