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EXTENDS BT TELEPHONE LINES - 20 metre extension lead with 6 wire (6P6C) configuration, ideal for extending phone sockets to hard-to-reach areas in offices, homes, and workspaces FULL 6 WIRE COMPATIBILITY - Features male plug to female socket connection supporting all 6 conductors for multi-line systems, broadband filters, and advanced telephony equipment BACKWARDS COMPATIBLE - Works seamlessly with standard 4 wire household telephones and extensions, ensuring compatibility with both modern and traditional BT phone systems DISCREET FLAT CABLE DESIGN - Low profile construction allows cable to be neatly run along skirting boards, under carpets, or through doorways without creating trip hazards or unsightly bulges READY TO USE - Comes complete with BT male plug on one end and female socket on the other, simply plug in to extend your existing telephone connection with no tools required