本推荐标准根据参考文献[1]交叉支持参考模型第1部分:SLE服务中规定的传输服务，定义了通信链路传输单元（CLTU）服务。前向CLTU服务是一种空间链路扩展（SLE）传输服务，使任务能够向航天器发送通信链路传输单元（CLTU）。交叉引用:CCSDS 910.4-B-2:2005ISO 15396:2007CCSDS 231.0-B-1:2003ISO 22642:2005CCDS232.0-B-1:2003ISO 22664:2005CCDS232.1-B-1:2003ISO 22667:2005CCDS301.0-B-3:2002ISO 11104: 2003ISO/IEC 7498-1:1994ISO/IEC 8824-1:2008CCSDS A00。0-Y-9:2003CCSDS 200.0-G-6:1987CCSDS 910.3-G-3:2006CCSDS 201.0-B-3:2000ISO 12171:2002CCSDS 202。0-B-3:2001ISO 12172:2003CCSDS 202.1-B-2:2001ISO 12173:2003CCSDS 203.0-B-2:2001ISO 12174:2003CCSDS 913.1-B-1:2008购买本文件时可获得的所有现行修订均包含在购买本文件中。

This Recommended Standard defines the Communications Link Transmission Unit (CLTU) service in conformance with the transfer services specified in reference [1], Cross Support Reference Model--Part 1: SLE Services. 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.Cross References:CCSDS 910.4-B-2:2005ISO 15396:2007CCSDS 231.0-B-1:2003ISO 22642:2005CCSDS 232.0-B-1:2003ISO 22664:2005CCSDS 232.1-B-1:2003ISO 22667:2005CCSDS 301.0-B-3:2002ISO 11104:2003ISO/IEC 7498-1:1994ISO/IEC 8824-1:2008CCSDS A00. 0-Y-9:2003CCSDS 200.0-G-6:1987CCSDS 910.3-G-3:2006CCSDS 201.0-B-3:2000ISO 12171:2002CCSDS 202. 0-B-3:2001ISO 12172:2003CCSDS 202.1-B-2:2001ISO 12173:2003CCSDS 203.0-B-2:2001ISO 12174:2003CCSDS 913.1-B-1:2008All current amendments available at time of purchase are included with the purchase of this document.