232x1b2

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Unformatted text preview: and the protocol entity, and it is assumed in this Recommended Standard that the Higher CCSDS 232.1-B-2 Page 3-2 September 2010 RECOMMENDED STANDARD FOR COMMUNICATIONS OPERATION PROCEDURE-1 Procedures shall perform necessary conversion between service primitives defined in reference [3] and inter-procedure signals defined here. The inter-procedure signals exchanged between FOP-1 and the Higher Procedures are classified into two categories: a) management signals; b) FDU transfer signals. 3.2.2.2 Management Signals 3.2.2.2.1 General The management signals shall be used to manage the operation of FOP-1 of a Virtual Channel. The management signals exchanged between FOP-1 and the Higher Procedures are classified into three categories: a) directive requests; b) directive notifications; c) asynchronous notifications. 3.2.2.2.2 Directive Requests The directive request signal shall be issued by the Higher Procedures to request FOP-1 to perform a Directive. Each directive request signal corresponds to a DIRECTIVE.request primitive defined in reference [3]. A DIRECTIVE.request primitive issued by the user shall be translated by the Higher Procedures to a directive request signal, which shall then delivered to FOP-1. The directive request signal shall have the following format (the items in parentheses are parameters of the signal): Directive Request (Request Identifier, GVCID, Directive Type, Directive Qualifier). The Request Identifier shall be used in the subsequent notification signal to identify the request associated with it. For Directive Type and Directive Qualifier, see 4.1. 3.2.2.2.3 Directive Notifications The directive notification signal shall be issued by FOP-1 to notify the Higher Procedures of an event or an action associated with a Directive. Each directive notification signal corresponds to a DIRECTIVE_Notify.indication primitive defined in reference [3]. A directive notification signal issued by FOP-1 shall be translated by the Higher Procedures to a DIRECTIVE_Notify.indication primitive, which shall then be given to the user. CCSDS 232.1-B-2 Page 3-3 September 2010 RECOMMENDED STANDARD FOR COMMUNICATIONS OPERATION PROCEDURE-1 The directive notification signal shall have the following format (the items in parentheses are parameters of th...
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This document was uploaded on 03/06/2014.

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