Telephone Plug and Socket System in New Look

Leaflet What is RJ Telephone Plug and Socket System?

RJ stands for Registered Jack. The RJ standard is currently the most popular standard for telephone connection interface in the world, and has been adopted in many countries, such as Canada, China, Japan, Singapore and the USA, etc.

RJ Socket RJ Plug
RJ Socket
RJ Socket
RJ Plug
RJ Plug

Implementation of the RJ Standard in Hong Kong

BTstandard

Tips to Consumers

* and other customer premises equipment (CPE), such as modem

For more information, contact us at:

Telephone : 2961 6636
Fax : 2838 5004
Email : standards@ofca.gov.hk