IOD Usage Constants

The following constants are used to indicate the usage of Information Object Definitions.

Code constant

Code value and meaning

IOD_USAGE_M

[0x00] Mandatory IOD

IOD_USAGE_C

[0x01] Conditional IOD

IOD_USAGE_U

[0x02] Optional IOD

IOD_USAGE_1

[0x03] Mandatory IOD - type 1

IOD_USAGE_1C

[0x04] Conditional IOD - type 1

IOD_USAGE_2

[0x05] Mandatory IOD - type 2

IOD_USAGE_2C

[0x06] Conditional IOD - type 2

IOD_USAGE_3

[0x07] Optional IOD - type 3