Alarm Detection (Defects) - Wavetek ANT-20 Operating Manual

ANT-20/ANT-20E
2.3.4

Alarm Detection (Defects)

Defect
VC-AIS
VP-AIS
VC-RDI
VP-RDI
1 A "Defect Second" is counted if the alarm state occurs at least once within a one-second interval.
Table S-5
2.3.5 Other Parameters
The following parameters are indicated as a count of defect seconds
"Loss of Performance Assesment Capability" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LPAC
"Not Connected Seconds" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NCS
1 A "Defect Second" is counted if the event occurs at least once within a one-second interval.
2 Only occurs for SVCs.
The "Loss of Performance Assessment Capability" state is detected if it is no longer possible to
measure the error and delay-related parameters due to major disruption of the cell stream.
The "Not Connected" applies when no virtual connection is switched.
Specifications "ATM Layer"
LED
Software LEDs for history and
actual status
Software LEDs for history and
actual status
Software LEDs for history and
actual status
Software LEDs for history and
actual status
Display of possible defects
Broadband Analyzer/Generator
1
Defect Seconds Count
yes
yes
yes
yes
Explanation
F5 layer (VC) Alarm
Indication Signal
F4 layer (VP) Alarm
Indication Signal
F5 layer (VC) Remote
Defect Indication Signal
F4 layer (VP) Remote
Defect Indication Signal
1
.
S-9
2