Space data and information transfer systems — Space link extension (SLE) — Return operational control fields service specification

The purpose of this document is to define the Space Link Extension (SLE) Return Operational Control Fields (ROCF) service in conformance with the SLE Reference Model (reference [1]). 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 document defines, in an abstract manner, the ROCF service in terms of:

the operations necessary to provide the service;
the parameter data associated with each operation;
the behaviors that result from the invocation of each operation; and
the relationship between, and the valid sequence of, the operations and resulting behaviors.

It does not specify:

individual implementations or products;
the implementation of entities or interfaces within real systems;
the methods or technologies required to acquire telemetry frames from signals received from a spacecraft;
the methods or technologies required to provide a suitable environment for communications; or
the management activities required to schedule, configure, and control the ROCF service.

NOTE – Reference [1] defines the Return Master Channel Operational Control Field (Rtn MC-OCF) service a