Handset

Classic handset
Woman using a telephone handset
Early 20th century candlestick telephone which required only the receiver to be held to the ear.

A handset is a component of a telephone that a user holds to the ear and mouth to receive audio through the receiver and speak to the remote party via the built-in transmitter.

In earlier telephones the transmitter was mounted directly on the telephone itself, which was attached to a wall at a convenient height or affixed to a desk stand.

Until the advent of the cordless telephone, the handset was usually wired to the base unit, typically by a flexible tinsel wire.

The handset of a cordless telephone contains a radio transceiver which relays communication via a base station that is wired to the telephone line. A mobile phone does not require a base station and communicates directly with a cell site in specially designated frequency bands.

Handset symbol

A graphic symbol that designates a handset is used on cordless and mobile phones to specify placing or ending a telephone call. Usually a button with green upright (off-hook) handset icon is used for starting a call, and a red lying-down (on-hook) handset is used for ending a call.[1] Unicode provides the U+1F4DE 📞 TELEPHONE RECEIVER symbol.

See also

References

  1. ↑ Lindholm, Christian; Keinonen, Turkka; Kiljander, Harri (2003-06-22). Mobile Usability: How Nokia Changed the Face of the Mobile Phone: How Nokia Changed the Face of the Mobile Phone. McGraw Hill Professional. ISBN 9780071429108.
  • Sajal K. Das, John Wiley & Sons (April 2010) "Mobile Handset Design ", ISBN 978-0-470-82467-2 .
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.