Specifications

3U Traffic Outstation Handbook
667/HB/26568/000 Page 176 Issue 15
Where <m> is the ‘major index’ and <n> is the ‘minor index’.
The major index controls the log that is being viewed i.e.:
Major Index = 0 - Current Log
Major Index = 1 - Historic Log
The minor index controls the part of the log is being viewed i.e.:
Minor Index
Function
0 Manual clearance of MTF initiated call.
1 Good termination
2 Carrier failed
3 Not used.
4 Initiate/Dial timeout.
5 Not used.
6 Not used.
7 Message timeout (i.e. although carrier is present the
Instation has not sent a message to the OMCU for at
least 20 minutes).
8 Identity timeout (i.e. the OMCU has not received an
identity request during the required period).
9 The OMCU detected a supply ‘brown-out’ and
terminated the call that was in progress at the time.
If the maintenance access code has been entered the log data can be reset by
entering ‘=0’.
11.7.2 Call Termination Record (CTR)
This log provides the engineer with information relating to the success of fault record
transfers to the Instation. Again as in the CDC command describes above the major
index provides access to both the historic and current log.
FORMAT: CTR <m> <n>
The major index <m> controls which log is being viewed i.e.:
Major Index = 0 - Current Log.
Major Index = 1 - Historic Log
The minor index <n> controls the part of the log is being viewed i.e.:
Minor Index
Function
0 Improperly terminated call (no abandon call
received from the Instation).
1 Successful (i.e. faults transferred to the Instation).
2 Unsuccessful (i.e. faults not transferred to the
Instation).
If the maintenance access code has been entered the log data can be reset by
entering ‘=0’.