Analog telephone adapter
An analog telephone adapter (ATA) or FXS gateway is a device for connecting traditional analog telephones, fax machines, and similar customer-premises devices to a digital telephone system or a voice over IP telephone network.[1]
An ATA is often built into a small enclosure with an internal or external power adapter, an Ethernet port, and one or more foreign exchange station (FXS) telephone ports. Such devices may also have a foreign exchange office (FXO) interface for providing alternative access to traditional landline telephone service.
The ATA provides dial tone, ringing generator, DC power, caller ID data and other standard telephone line signaling (known collectively as BORSCHT) to the telephone connected to a modular jack.
The digital interface of the ATA typically consists of an Ethernet port to connect to an Internet Protocol (IP) network, but may also be a USB port for connecting the device to a personal computer.
Using such an ATA, it is possible to connect a conventional telephone to a remote VoIP server. The ATA communicates with the server using a protocol such as H.323, SIP, MGCP, SCCP or IAX, and encodes and decodes the voice signal using a voice codec such as G.711, G.729, GSM, or iLBC. Since the ATA communicates directly with the VoIP server, it does not require a personal computer or any software such as a softphone. It uses approximately 3 to 5 watts of electricity, depending on the model and brand.
Often an ATA is connected between an IP network (such as a broadband connection) and the existing telephone wiring of the residence through one of the jacks to provide public switched telephone network (PSTN) access.
See also
- Telephone VoIP adapter
References
- ^ Hammond, Paul (2011-11-18). "Analog Telephone Adapter Explained". VirtualPBX. Retrieved 2023-07-08.
- v
- t
- e
- Beacon
- Broadcasting
- Cable protection system
- Cable TV
- Communications satellite
- Computer network
- Data compression
- Digital media
- Drums
- Edholm's law
- Electrical telegraph
- Fax
- Heliographs
- Hydraulic telegraph
- Information Age
- Information revolution
- Internet
- Mass media
- Mobile phone
- Optical telecommunication
- Optical telegraphy
- Pager
- Photophone
- Prepaid mobile phone
- Radio
- Radiotelephone
- Satellite communications
- Semaphore
- Semiconductor
- Smoke signals
- Telecommunications history
- Telautograph
- Telegraphy
- Teleprinter (teletype)
- Telephone
- The Telephone Cases
- Television
- Undersea telegraph line
- Videotelephony
- Whistled language
- Wireless revolution
- Nasir Ahmed
- Edwin Howard Armstrong
- Mohamed M. Atalla
- John Logie Baird
- Paul Baran
- John Bardeen
- Alexander Graham Bell
- Emile Berliner
- Tim Berners-Lee
- Francis Blake (telephone)
- Jagadish Chandra Bose
- Charles Bourseul
- Walter Houser Brattain
- Vint Cerf
- Claude Chappe
- Yogen Dalal
- Daniel Davis Jr.
- Donald Davies
- Amos Dolbear
- Thomas Edison
- Lee de Forest
- Philo Farnsworth
- Reginald Fessenden
- Elisha Gray
- Oliver Heaviside
- Robert Hooke
- Erna Schneider Hoover
- Harold Hopkins
- Gardiner Greene Hubbard
- Internet pioneers
- Bob Kahn
- Dawon Kahng
- Charles K. Kao
- Narinder Singh Kapany
- Hedy Lamarr
- Innocenzo Manzetti
- Guglielmo Marconi
- Robert Metcalfe
- Antonio Meucci
- Samuel Morse
- Jun-ichi Nishizawa
- Charles Grafton Page
- Radia Perlman
- Alexander Stepanovich Popov
- Tivadar Puskás
- Johann Philipp Reis
- Claude Shannon
- Almon Brown Strowger
- Henry Sutton
- Charles Sumner Tainter
- Nikola Tesla
- Camille Tissot
- Alfred Vail
- Thomas A. Watson
- Charles Wheatstone
- Vladimir K. Zworykin
media
and switching
- Bandwidth
- Links
- Nodes
- terminal
- Network switching
- Telephone exchange
- Africa
- Americas
- North
- South
- Antarctica
- Asia
- Europe
- Oceania
- (Global telecommunications regulation bodies)
- Telecommunication portal
- Category
- Outline
- Commons