1 Scope
This part of ISO 14827 defines the format that should be used to document those end-application messages that are to be exchanged between and among central systems. The format is protocol-independent to the extent practical. For example, this one format can be used to
define data exchanges that may apply to DATEX-ASN, CORBA, or other application protocols.
In general, each system can be viewed as consisting of the interfaces as shown in
Figure 1:
Figure 1
—
System interface

NOTE The communications cloud between the systems may be complex or simple.
| 1 | application interface |
| 2 | operator interface |
| 3 | communication interface |
| 4 | database interface |
| 5 | communications cloud |
| 6 | client system |
| 7 | server system |
This part of ISO 14827 deals only with the communication interface and is at a very high level. Other parts
define how end-application messages can be exchanged using various application layerprotocols.
While this part of ISO 14827 has been designed to meet the unique requirements of a TICS environment, it has been
designed in a generic fashion and thus could be used for other data exchanges as well.