924 the mcid parameter is the sap address of the

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Unformatted text preview: ted, and that one or more OCF_SDUs may have been lost. If implemented, the flag shall be derived by examining the Master Channel Frame Count in the Transfer Frames. CCSDS 132.0-B-1 Page 3-21 September 2003 CCSDS RECOMMENDATION FOR TM SPACE DATA LINK PROTOCOL 3.9.3 MC_OCF SERVICE PRIMITIVES 3.9.3.1 General The service primitives associated with the MC_OCF Service are: a) MC_OCF.request; b) MC_OCF.indication. 3.9.3.2 MC_OCF.request 3.9.3.2.1 Function At the sending end, the MC_OCF Service user shall pass an MC_OCF.request primitive to the service provider to request that an OCF_SDU be transferred to the user at the receiving end through the specified Master Channel. NOTE – The MC_OCF.request primitive is the service request primitive for the MC_OCF Service. 3.9.3.2.2 Semantics The MC_OCF.request primitive shall provide parameters as follows: MC_OCF.request 3.9.3.2.3 (OCF_SDU, MCID) When Generated The MC_OCF.request primitive shall be passed to the service provider to request it to send the OCF_SDU. 3.9.3.2.4 Effect On Receipt Receipt of the MC_OCF.request primitive shall cause the service provider to transfer the OCF_SDU. 3.9.3.2.5 Additional Comments The MC_OCF.request primitive shall be used to transfer OCF_SDUs across the space link on the specified Master Channel. CCSDS 132.0-B-1 Page 3-22 September 2003 CCSDS RECOMMENDATION FOR TM SPACE DATA LINK PROTOCOL 3.9.3.3 MC_OCF.indication 3.9.3.3.1 Function At the sending end, the service provider shall pass an MC_OCF.indication to the MC_OCF Service user at the receiving end to deliver an OCF_SDU. NOTE – The MC_OCF.indication primitive is the service indication primitive for the MC_OCF Service. 3.9.3.3.2 Semantics The MC_OCF.indication primitive shall provide parameters as follows: MC_OCF.indication (OCF_SDU, MCID, OCF_SDU Loss Flag (optional)) 3.9.3.3.3 When Generated The MC_OCF.indication primitive shall be passed from the service provider to the MC_OCF Service user at the receiving end to deliver an OCF_SDU. 3.9.3.3.4 Effect On Receipt The effect of receipt of th...
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This document was uploaded on 03/06/2014.

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