AA
Circuit switching
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).
AB
SITA
Communications number assigned by Societe Internationale de Telecommunications Aeronautiques (SITA).
AC
ARINC
Communications number assigned by Aeronautical Radio Inc.
AD
AT&T mailbox
AT&T mailbox identifier.
AE
Peripheral device
Peripheral device identification.
AF
U.S. Defense Switched Network
The switched telecommunications network of the United States Department of Defense.
AG
U.S. federal telecommunications system
The switched telecommunications network of the United States government.
AH
World Wide Web
Data exchange via the World Wide Web.
AI
International calling country code
Identifies that portion of an international telephone number representing the country code to be used when calling internationally.
AJ
Alternate telephone
Identifies the alternate telephone number.
AK
Videotex number
Code that identifies the communications number for the online videotex service.
AL
Cellular phone
Identifies the cellular phone number.
AM
International telephone direct line
The international telephone direct line number.
AN
O.F.T.P. (ODETTE File Transfer Protocol)
ODETTE File Transfer Protocol.
AO
Uniform Resource Location (URL)
Identification of the Uniform Resource Location (URL) Synonym: World wide web address.
AP
Very High Frequency (VHF) radio telephone
VHF radio telephone.
AQ
X.400 address for mail text
The X.400 address accepting information in the body text of a message.
AR
AS1 address
Address capable of receiving messages in accordance with the EDIINT/AS1 protocol for MIME based EDI .
AS
AS2 address
Address capable of receiving messages in accordance with the EDIINT/AS2 protocol.
AT
AS3 address
Address capable of receiving messages in accordance with the EDIINT/AS3 protocol.
AU
File Transfer Protocol
Address capable for receiving message in accordance with the File Transfer Protocol (IETF RFC 959 et. al.).
CA
Cable address
The communication number identifies a cable address.
EI
EDI transmission
Number identifying the service and service user.
EM
Electronic mail
Exchange of mail by electronic means.
EX
Extension
Telephone extension.
FT
File transfer access method
According to ISO.
FX
Telefax
Device used for transmitting and reproducing fixed graphic material (as printing) by means of signals over telephone lines or other electronic transmission media.
GM
GEIS (General Electric Information Service) mailbox
The communication number identifies a GEIS mailbox.
IE
IBM information exchange
The communication number identifies an IBM IE mailbox.
IM
Internal mail
Internal mail address/number.
MA
Mail
Postal service document delivery.
PB
Postbox number
The communication number identifies a postbox.
PS
Packet switching
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).
SW
S.W.I.F.T.
Communications address assigned by Society for Worldwide Interbank Financial Telecommunications s.c.
TE
Telephone
Voice/data transmission by telephone.
TG
Telegraph
Text transmission via telegraph.
TL
Telex
Transmission of text/data via telex.
TM
Telemail
Transmission of text/data via telemail.
TT
Teletext
Transmission of text/data via teletext.
TX
TWX
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.
XF
X.400 address
The X.400 address.
XG
Pager
Identifies that the communication number is for a pager.
XH
International telephone switchboard
The international telephone switchboard number.
XI
National telephone direct line
The national telephone direct line number.
XJ
National telephone switchboard
The national telephone switchboard number.