This International Standard specifies the communications operation Procedure-1 (COP-1). This procedure is used in conjunction with the telecommand (TC) space data link protocol, as defined by ISO 22664, to enable the delivery of service data units to the receiving end of the layer above, correct and without omission or
duplication, and in the same sequential order in which they were received from the layer above at the sending end.
The scope and field of application are furthermore detailed in subclauses 1.1 and 1.2 of the enclosed CCSDS publication.