International Organization for Standardization

Space data and information transfer systems - Space link extension - Internet protocol for transfer service - Second Edition
 N 18440

Annotation

This Recommended Standard defines a protocol for transfer of SLE PDUs between an SLE user and an SLE provider system in terms of:

a) the procedures used to establish and release associations;

b) the messages exchanged on an established association;

c) the procedures used to monitor the status of data communication connections; and

d) the methods used to ensure that data are converted between different formats and representations on different platforms.

It does not specify:

a) individual designs, implementations, or products;

b) the configuration of the data communications infrastructure, including configuration of the TCP and IP protocols;

c) the means by which addresses (IP addresses and TCP port numbers) are agreed, assigned, and communicated.

This Recommended Standard responds to the requirements imposed by the Recommended Standards for SLE transfer services that were available when this Recommended Standard was released. The protocol specified in this Recommended Standard conforms to the requirements on data communication services set forth in those Recommended Standards.

PURPOSE

The Space Link Extension (SLE) Reference Model (reference [1]) identifies a set of SLE Transfer Services that enable missions to send forward space link data units to a spacecraft and to receive return space link data units from a spacecraft. A subset of these services is specified by the SLE Transfer Service Recommended Standards (references [2], [3], [4], [5], and [6]). The SLE Transfer Service Recommended Standards specify