Description The AV:Link RJ11 6P4C inline coupler joins two RJ11 modular cables using back-to-back female sockets at both ends. The 6P4C configuration (6-position, 4-conductor) carries four active wires through the coupler, making it compatible with standard telephone handset cables, modem cables and basic data connections that use the RJ11 form factor. Designed for extending telephone lines, fax connections and legacy modem setups where the existing cable run is too short to reach the wall socket or device, the coupler provides a direct pass-through connection without signal loss. The compact housing sits inline with the cable run and does not require external power or additional wiring. It can be used in residential telephone installations, small office environments and retail point-of-sale systems where landline connectivity is still in use. The moulded plastic housing protects the internal conductors and provides strain relief at both socket ends, preventing damage from repeated plugging and unplugging. The coupler accepts standard RJ11 6P4C plugs with the retaining clip facing upwards, and the sockets provide a positive click when a cable is fully seated. Supplied in a sealed retail bag. Specification Type Modular (RJ) Frequently Asked What's the difference between 6P4C and 6P6C? 6P4C means six positions but only four conductors are wired (typically the centre four pins). 6P6C wires all six positions. This coupler is 6P4C, so it works with standard telephone handset cables and basic RJ11 connections but will not pass signals on the outer two positions if you plug in a fully-wired 6P6C cable. Can this be used for Ethernet? No. Ethernet uses RJ45 8P8C connectors with eight conductors. RJ11 has a smaller plug body and fewer conductors. This coupler is for telephone and legacy modem connections only. Does it work with all RJ11 cables? It works with any cable that has a standard RJ11 6P4C or 6P6C plug. If the cable uses only the centre four conductors (most telephone cables do), the connection will pass through correctly. If the cable requires all six positions to be active, only the centre four will carry signal.
