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 3153 -
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Communication channel identifier, coded
UN/CEFACT Revision 1997B Code List |
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| Repr: | an..3 |
| Desc: | Code identifying the type of communication channel being used. |
| This table also occurs in the following versions of this standard:
D00A, D00B, D01A, D01B, D01C, D02A, D02B, D03A, D03B, D04A, D04B, D93A, D94A, D94B, D95A, D95B, D96A, D96B, D97A, D97B, D98A, D98B, D99A, D99B |
| 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. |
| CA | Cable address |
| Self explanatory. |
| 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 |
| Self explanatory. |
| IE | IBM information exchange |
| Self explanatory. |
| IM | Internal mail |
| Internal mail address/number. |
| MA | Mail |
| Postal service document delivery. |
| PB | Postbox no. |
| Self explanatory. |
| 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. |
| Change indicators |
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plus sign |
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An addition. |
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asterisk |
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Addition/substraction/change to a code entry for a particular data element. |
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hash or pound sign |
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Changes to names. |
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vertical bar |
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Changes to text for descriptions, notes and functions. |
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minus sign |
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A deletion. |
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letter X |
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Marked for deletion. |
| Usage indicators |
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Used in batch messages only. |
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Common usage in both batch and interactive messages. |
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Used in interactive messages only. |
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