BS ISO 22671:2011 - Page 6

Space data and information transfer systems. Space link extension (SLE). Forward communications link transmission unit (CLTU) service. | Status: Superseded, Withdrawn

1 Scope 1.1 This International Standard defines the Communications Link Transmission Unit (CLTU) service in conformance with the transfer services specified in CCSDS 910.4-B-2 (equivalent to ISO 15396). The Forward CLTU service is a Space Link Extension (SLE) transfer service that enables a mission to send Communications Link Transmission Units (CLTUs) to a spacecraft.