Skip to content
FREE STANDARD DELIVERY ON ALL UK MAINLAND ORDERS
FREE DELIVERY ON ALL UK MAINLAND ORDERS

Registered Jack (RJ) Connectors - Help Guide

Difference Between Connectors - 8P8C(RJ45), 6P6C(RJ12), 6P4C(RJ11), 4P4C(RJ9/RJ10/RJ22)

These connectors are all crimp connectors that are specifically used for telecoms and networking tasks. The difference between the connectors is in the number of positions available on the connector itself, and with the number of contacts actually present. The more positions on the connector then the larger the connector will be.

The simple guide below outlines the differences between the various connectors;

RJ9/RJ10/RJ22: 4P4C (4 Position, 4 Conductor) are typically used for Telephone Handset cables. Since telephone handsets/headsets do not connect directly to the public network, they do not have a specific registered jack code.

RJ11: 6P4C (6 Position, 4 Conductor) are typically used for ADSL, Telephone (connecting router to filter).

RJ12: 6P6C (6 Position, 6 Conductor) are typically used in Phone Systems.

RJ45: 8P8C (8 Position 8 Contact) are typically used in Network Wiring such as CAT5e/CAT6.

RJ11 and RJ12 only differs in the wiring. RJ12 utilizes all six slots while RJ11 uses only four of the six slots available.

 

Previous article What is the minimum IP Rating for outdoor use?
Next article 100V Line Public Address PA Audio Music Systems / Tannoy Systems