An index of all the common telecoms terms, jargon and acronyms.

Telecommunications Glossary > H


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H.323

A framework of protocols for inter-working voice, video and data across an IP network.

Hot Swappable

The ability of a component to be added to or removed from a piece of equipment without powering down the device, providing maximum uptime.

Hunt Group

A series of telephone lines organised so that if the first line is busy the next line is ‘hunted’, and so on until a free line is found. Often used in an on-site PBX application where handsets replace available lines.

HUC – Hosted Unified Communications

A term used to refer to a hosted telephony system that utilises modern Unified Communications functions and collaboration – i.e. mobile linking and intelligent voicemail delivery.

HFC – Hybrid Fibre Coax

Another term of switch, commonly used in the UK to refer to a single-housed control centre for telecommunications.


If you require any further information about any of the terms or information on our website, please call us on +44 (0)203 006 1170 or email contact@carritech.com.


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