Dictionary

This dictionary has been set up to help you better understand the technical "lingo" associated with voice and data communication. Simply click on a letter below to find a particular word.

Hands-free Answer on Intercom
This feature allows the system to answer intercom calls automatically via the speakerphone, so that call recipients do not have to pick up the handset to respond to a call.

HDSL
High bit-rate DSL, one of the earliest forms of DSL, is used for wideband digital transmission within a corporate site and between the telephone company and a customer.

Hertz (Hz)
A measure of frequency of one cycle per second.

Hunt Group
A group of extensions that takes incoming or transferred calls in round-robin fashion.

Hybrid Mode
An operating mode in which outside lines are grouped together in pools. To access outside lines, users press pool buttons on their phones or enter the pool access code. In this mode, users do not know which lines they are using to make and receive calls.