ISO 26143

Description / Abstract: This International Standard defines the space link extension (SLE) return operational control fields (ROCF) service in accordance with the SLE Reference Model (CCSDS 910.4-B-2). The ROCF service is an SLE transfer service that delivers to a mission user all operational control fields from one master channel or one virtual channel.

This International Standard defines the ROCF service in terms of

a) the operations necessary to provide the service,

b) the parameter data associated with each operation,

c) the behaviors that result from the invocation of each operation, and

d) the relationship between, and the valid sequence of, the operations and resulting behaviors.

It does not specify

a) individual implementations or products,

b) the implementation of entities or interfaces within real systems,

c) the methods or technologies required to acquire telemetry frames from signals received from a spacecraft,

d) the methods or technologies required to provide a suitable environment for communications, or

e) the management activities required to schedule, configure, and control the ROCF service.

The scope and field of application are furthermore detailed in subclauses 1.1, 1.2 and 1.3 of the enclosed CCSDS publication.