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Unformatted text preview: n Receipt The effect of receipt of the MC_FSH.indication primitive by the MC_FSH Service user is
22.214.171.124.5 Additional Comments
The MC_FSH.indication primitive shall be used to deliver FSH_SDUs to the MC_FSH
Service user identified by the MCID. CCSDS 132.0-B-1 Page 3-20 September 2003 CCSDS RECOMMENDATION FOR TM SPACE DATA LINK PROTOCOL 3.9 MASTER CHANNEL OPERATIONAL CONTROL FIELD (MC_OCF)
SERVICE 3.9.1 OVERVIEW OF MC_OCF SERVICE
The Master Channel Operational Control Field (MC_OCF) Service provides synchronous
transfer of fixed-length data units, each consisting of four octets, in the Operational Control
Field (OCF) of Transfer Frames of a Master Channel. The service is unidirectional and
sequence-preserving. The transfer is synchronized with the release of Transfer Frames of a
Master Channel. The service does not guarantee completeness, but it may signal gaps in the
sequence of service data units delivered to a receiving user.
Only one user, identified with the MCID of the Master Channel, can use this service on a
Master Channel. Service data units from different users are not multiplexed together within
one Master Channel.
3.9.2 MC_OCF SERVICE PARAMETERS
126.96.36.199 General The parameters used by the MC_OCF Service primitives shall conform to the specifications
contained in subsections 188.8.131.52 through 184.108.40.206.
220.127.116.11 OCF_SDU NOTE – The OCF_SDU parameter is the service data unit transferred by the MC_OCF
Service in the Operational Control Field of Transfer Frames of a Master Channel.
For restrictions on the OCF_SDU transferred by the MC_OCF Service, see 3.2.5.
18.104.22.168 MCID The MCID parameter shall contain an MCID that indicates the Master Channel through
which the OCF_SDU is to be transferred.
22.214.171.124 The MCID parameter is the SAP address of the OCF_SDU Service.
OCF_SDU Loss Flag The OCF_SDU Loss Flag is an optional parameter that may be used to notify the user at the
receiving end of the MC_OCF Service that a sequence discontinuity has been detec...
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- Spring '14