Qualifier Value
Qualifier values of 3153 in D04B
Communication medium type code (an1..3)
Code specifying the type of communication medium.
| Code | Description | 
|---|---|
| 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 | 
            Courier             A communication channel identifying a courier.  | 
        
| AE | 
            Express post             Express (e.g. overnight) postal service document delivery.  | 
        
| CA | 
            Cable address             The cable is used as communication medium.  | 
        
| 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             GEIS mailbox system is used as communication medium.  | 
        
| IE | 
            IBM information exchange             IBM IE is used as communication medium.  | 
        
| IM | 
            Internal mail             Internal mail address/number.  | 
        
| MA | 
            Mail             Postal service document delivery.  | 
        
| PB | 
            Postbox no.             Postbox system is used as communication medium.  | 
        
| 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             CCITT Message handling system.  |