Appendix A
Test Results Definitions
DS1 results
CT-650 Command-Line Reference Guide
Release 9.4
139
Frame
The following fields appear in the Frame category of the DS1 test
results screens.
Field
Description
Frame
Errors
Number of frame errors detected since initial frame
synchronization.
Frame Err
Rate
Ratio of frame errors to received framing bits since ini-
tially acquiring frame synchronization.
Frame Slips
Number of frame slips (±193 bits) between the
received signal and the reference clock.
Frame Err
Sec
Number of seconds during which one or more frame
errors occurred since initial frame synchronization.
Frame Sev
Err Sec
Number of seconds during which the total number of
frame errors is 12 or more (D4 framing only).
Frame
Losses
Number of times frame synchronization was lost since
initial frame synchronization.
Frame Loss
Sec
Number of seconds during which one or more frame
synchronization losses occurred or during which frame
synchronization could not be achieved since initial
DS1 frame synchronization.
CRC Errors
Number of CRC errors detected since initial DS1
frame synchronization. CRC errors are counted only
when ESF or optional ESFz framing is present in the
received T1 data.
CRC Errored
Sec
Number of seconds during which one or more CRC
errors occurred.
Summary of Contents for CT-650
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