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Unformatted text preview: e MC_OCF.indication primitive by the MC_OCF Service user is
188.8.131.52.5 Additional Comments
The MC_OCF.indication primitive shall be used to deliver OCF_SDUs to the MC_OCF
Service user identified by the MCID.
3.10 MASTER CHANNEL FRAME (MCF) SERVICE
3.10.1 OVERVIEW OF MCF SERVICE
The Master Channel Frame (MCF) Service provides transfer of a sequence of fixed-length
TM Transfer Frames of a Master Channel, created by an independent protocol entity, across a
space link. The service is unidirectional, either asynchronous or periodic, and sequencepreserving. The service does not guarantee completeness, but it may signal gaps in the
sequence of service data units delivered to a receiving user. CCSDS 132.0-B-1 Page 3-23 September 2003 CCSDS RECOMMENDATION FOR TM SPACE DATA LINK PROTOCOL 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.
3.10.2 MCF SERVICE PARAMETERS
The parameters used by the MCF Service primitives shall conform to the specifications
contained in subsections 184.108.40.206 through 220.127.116.11.
The Frame parameter shall be a TM Transfer Frame of the Master Channel specified by the
1 The Frame parameter is the service data unit transferred by the MCF Service. 2 The format of the MCID parameter is defined in 4.1. 3 For restrictions on the TM Transfer Frames transferred by the MCF Service, see
3.2.6. 18.104.22.168 MCID
The MCID parameter shall contain an MCID that indicates the Master Channel through
which the Frame is to be transferred.
NOTE – The MCID parameter is the SAP address of the MCF Service.
22.214.171.124 Frame Loss Flag
The Frame Loss Flag is an optional parameter that may be used to notify the user at the
receiving end of the MCF Service that a sequence discontinuity has been detected, and that
one or more Transfer Frames of the specified Master Channel have been lost. If
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This document was uploaded on 03/06/2014.
- Spring '14