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AA |
| Circuit switching |
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A process that, on demand, connects two or more data terminal equipments and permits the exclusive use of a data circuit between them until the connection is released (ISO). |
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AB |
| SITA |
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Communications number assigned by Societe Internationale de Telecommunications Aeronautiques (SITA). |
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AC |
| ARINC |
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Communications number assigned by Aeronautical Radio Inc. |
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AD |
| AT&T mailbox |
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AT&T mailbox identifier. |
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AE |
| Peripheral device |
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Peripheral device identification. |
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AF |
| U.S. Defense Switched Network |
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The switched telecommunications network of the United States Department of Defense. |
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AG |
| U.S. federal telecommunications system |
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The switched telecommunications network of the United States government. |
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AH |
| World Wide Web |
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Data exchange via the World Wide Web. |
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AI |
| International calling country code |
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Identifies that portion of an international telephone number representing the country code to be used when calling internationally. |
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AJ |
| Alternate telephone |
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Identifies the alternate telephone number. |
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AK |
| Videotex number |
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Code that identifies the communications number for the online videotex service. |
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AL |
| Cellular phone |
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Identifies the cellular phone number. |
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AM |
| International telephone direct line |
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The international telephone direct line number. |
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AN |
| O.F.T.P. (ODETTE File Transfer Protocol) |
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ODETTE File Transfer Protocol. |
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CA |
| Cable address |
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The communication number identifies a cable address. |
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EI |
| EDI transmission |
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Number identifying the service and service user. |
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EM |
| Electronic mail |
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Exchange of mail by electronic means. |
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EX |
| Extension |
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Telephone extension. |
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FT |
| File transfer access method |
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According to ISO. |
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FX |
| Telefax |
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Device used for transmitting and reproducing fixed graphic material (as printing) by means of signals over telephone lines or other electronic transmission media. |
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GM |
| GEIS (General Electric Information Service) mailbox |
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The communication number identifies a GEIS mailbox. |
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IE |
| IBM information exchange |
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The communication number identifies an IBM IE mailbox. |
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IM |
| Internal mail |
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Internal mail address/number. |
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MA |
| Mail |
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Postal service document delivery. |
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PB |
| Postbox number |
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The communication number identifies a postbox. |
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PS |
| Packet switching |
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The process of routing and transferring data by means of addressed packets so that a channel is occupied only during the transmission; upon completion of the transmission the channel is made available for the transfer of other packets (ISO). |
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SW |
| S.W.I.F.T. |
| |
Communications address assigned by Society for Worldwide Interbank Financial Telecommunications s.c. |
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TE |
| Telephone |
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Voice/data transmission by telephone. |
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TG |
| Telegraph |
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Text transmission via telegraph. |
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TL |
| Telex |
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Transmission of text/data via telex. |
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TM |
| Telemail |
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Transmission of text/data via telemail. |
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TT |
| Teletext |
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Transmission of text/data via teletext. |
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TX |
| TWX |
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Communication service involving Teletypewriter machines connected by wire or electronic transmission media. Teletypewriter machines are the devices used to send and receive signals and produce hardcopy from them. |
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XF |
| X.400 address |
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The X.400 address. |
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XG |
| Pager |
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Identifies that the communication number is for a pager. |
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XH |
| International telephone switchboard |
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The international telephone switchboard number. |
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XI |
| National telephone direct line |
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The national telephone direct line number. |
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XJ |
| National telephone switchboard |
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The national telephone switchboard number. |
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