3155 Communication channel qualifier

Code identifying the type of communication channel being used.

Type
String (AN)
Length
Min 1 / Max 3
Codes
CodeDescription
AACircuit 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).
ABSITA
Communications number assigned by Societe Internationale de Telecommunications Aeronautiques (SITA).
ACARINC
Communications number assigned by Aeronautical Radio Inc.
ADAT&T mailbox
AT&T mailbox identifier.
AEPeripheral device
Peripheral device identification.
CACable address
EIEDI transmission
Number identifying the service and service user.
EMElectronic mail
Creating/sending/receiving of unstructured free text messages or documents using computer network, a mini- computer or an attached modem and regular telephone line or other electronic transmission media.
EXExtension
Telephone extension.
FTFile transfer access method
According to ISO.
FXTelefax
Device used for transmitting and reproducing fixed graphic material (as printing) by means of signals over telephone lines or other electronic transmission media.
GMGEIS (General Electric Information Service) mailbox
IEIBM information exchange
IMInternal mail
Internal mail address/number.
MAMail
Postal service document delivery.
PBPostbox number
PSPacket 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).
SWS.W.I.F.T.
Communications address assigned by Society for Worldwide Interbank Financial Telecommunications s.c.
TETelephone
Voice/data transmission by telephone.
TGTelegraph
Text transmission via telegraph.
TLTelex
Transmission of text/data via telex.
TMTelemail
Transmission of text/data via telemail.
TTTeletext
Transmission of text/data via teletext.
TXTWX
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.
XFX.400
CCITT Message handling system.

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