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Revision 10 10-45 450-SNUG
Message ID Message
Type/
Class
OPM 66
Time Transfer
Data
Service Level
Requests
(SLRs)
Operations
Data Messages
(ODMs)
Table 10-12. Real-time Message Flow Between the NCCDS and the GTs (cont’d)
Message Length and
Operational
Characteristics
03/66 Variable length dependent
on number, n, of time
transfer samples
04/NA
(note)
SA/SMAR 05/NA
(note)
MA/SMAF 06/NA
(note)
End-to-End
Test
07/NA
(note)
SLRs with ID numbers 1 to
4,999,999 to 1 are a result
of equipment status
change. SLRs with ID
numbers 5,000,000 to
9,999,999 to 5,000,000 are
sent in response to
NCCDS request
Real-time operations report
Message class information not applicable to SLRs and ODMs
Message
Generation
Frequency
Message Generation
Conditions
Messages from the GTs to the NCCDS (cont’d)
One every 5
seconds during
active event
Transmitted to NCCDS within
1 minute of tracking service
termination for which time
transfer was requested in the
SHO
Upon verbal request from the
NCCDS or upon change in
any reported parameter within
15 minutes of change
SLR information is also sent
via e-mail
Separate ODMs are sent for
SA/SMAR, MA/SMAF, and
end-to-end test services for
each TDRS whenever service
is ongoing
Note:
Required Processing Destination System Response
NCCDS receives and
reformats the message
and sends it to the
appropriate MOCC
For resources reported
as unavailable, the
NCCDS operator will
block the affected
resources to keep them
from being scheduled for
user support
ODMs are reformatted
as UPD messages and
routed to appropriate
MOCC when requested
Route TDRSS customer
performance data message to
appropriate MOCC