3 Definitions
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# 3 Definitions

For the purposes of this Standard the following definitions apply.

## 3.1 Reference Model Definitions

This Part of the Standard is based on the concepts developed in ISO 7498-1 and makes use of the following terms defined in it:

1. Application Entity;

2. Application Process;

3. Service or Layer Service;

4. Transfer Syntax.

This Part of the Standard makes use of the following terms defined in ISO 7498-2:

1. Data Confidentiality

   ### Note

   The definition is "the property that information is not made available or disclosed to unauthorized individuals, entities or processes."

2. Data Origin Authentication

   ### Note

   The definition is "the corroboration that the source of data received is as claimed."

3. Data Integrity

   ### Note

   The definition is "the property that data has not been altered or destroyed in an unauthorized manner."

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2 References | Home | 3.2 Service Conventions Definitions