Chapter 3 Operation
3-6
Table 3- 2 Alarm Type Table
ALARM TYPE ALARM DESCRIPTION THRESHOLD
"RAI/YEL" Yellow Alarm no
"AIS" Alarm Indication Signal no
"LOS" Loss of Signal no
"LOF" Loss of Frame no
"BPV" Bipolar Violation 10E- (5, 6, 7, 8, 9) yes (default 5)
"ES" Error Second (0 to 900) yes (default 1)
"UAS" Unavailable Second (0 to 900) yes (default 1)
"CSS" Control Slip Second (0 to 900) yes (default 1)
DTE DTE port, RTS loss of clock in TTM
3.13.2 Report
For E1 and T1 type plug-in cards, Loop-V 4200 has three sets of performance registers. These are line, user,
and far-end. The line performance register tracks the line receiver performance status. The user
performance register tracks the line receiver as well, but user may clear at any time. The far-end
performance register tracks the far-end Loop-V 4200 receiver status. The performance parameters are listed
in Table 3-3 and 3-4. User performance register have two additional parameters. One is BPV register to
count bipolar violation in both D4 and ESF modes. The other is ESF to track framing error and CRC error in
ESF frame format mode only, or CSS (controlled slip second) for E1.
Each performance parameter has ninety six sets of registers to record 24 hours history in 15 minute interval.
Table 3- 3 Performance Parameter List - T1
Performance
Parameter
Description Definition (T1/D4) Definition (ESF)
ES Error Second BPV
≥
1, OOF
≥
1, or CS
≥
1. CRC
≥
1, OOF
≥
1, or CS
≥
1.
BES Bursty Error Second 1 < BPV < 1544 1 < CRC < 320
SES Severe Error Second BPV
≥
1544, or OOF
≥
1 CRC
≥
320, or OOF
≥
1
CSS Controlled Slip Second frame slip
≥
1 frame slip
≥
1
OOF Out of Frame
2 frame bit error in 6
consecutive frame bits
2 frame bit error in 6
consecutive frame bits
LOFC Loss Of Frame Count OOF for 2.5 0.5 sec OOF for 2.5 0.5 sec
UAS Unavailable Second 10 consecutive SES 10 consecutive SES
BPV Bipolar Violation Bipolar Error Count Bipolar Error Count
ESF CRC Error,
or Out Of Frame
(not used, always 0) CRC error or OOF
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