Appendix A
Test Results Definitions
DS0 DDS results
160
CT-650 Command-Line Reference Guide
Release 9.4
G.821
The following fields appear in the G.821 category of the DS0 DDS test
results screens.
Line status
The following fields appear in the Line Status category of the DS0 DDS
test results screens.
Field
Description
Error Free
Sec
Number of seconds during which pattern synchroniza-
tion is maintained through the entire second and no bit
error occurred.
Severely
Errored Sec
Number of seconds during which the bit error ratio
was greater than 10
-
3
since the test started.
Available
Sec
Number of elapsed seconds since pattern synchroni-
zation for which the bit error rate is less than 10
-3
.
Unavail-
able Sec
Count of elapsed seconds since pattern synchroniza-
tion in which the bit error rate is greater than or equal
to 10
-3
.
% Error
Free Sec
Ratio, expressed as a percentage, of error-free sec-
onds to the total number of seconds since pattern syn-
chronization.
Field
Description
Signal
Present
Signal currently detected.
Frame Sync
Indicates frame synchronization was detected.
Pattern
Sync
Pattern synchronization detected.
Summary of Contents for CT-650
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