RJ11 Coupler / Telephone Cable Joiner – Female to Female RJ11 Connector Use the RJ11 coupler / joiner to connect 2 x telephone cables together to extend an existing connection. Telephone Cables Commonly used with this coupler 100 Meter Cable Roll Standard 4 Core Telephone cable (used with RJ10 or RJ11 Connectors) RJ11 4 Pin Telephone Cable Connector jack
