ADC Release 3.1 - Manual (Page 178)

1152700 • Issue 1 • February 2001 • Section 2 Operation and Maintenance
Page 2-158
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2000, ADC Telecommunications, Inc.
DLP-729
Page 4 of 4
Table 729-1. T1 Multi 1 CRS Performance Monitoring Values, continued
MONTYPE MAX 15 MIN.
THRESHOLD COMMENTS
AAL 1 LAYER
Stuffing Cells 9900 Indicates a count of AIS cells inserted into the data stream for stuffing
purposes in a 15-minute interval.
Congestion Lost
Cells 32 BITS Indicates a count of cells discarded in a 15-minute interval.
AAL1
Sequence Errors 31 BITS A count of “Out of Sequence” transitions in a 15-minute interval.
Lost Cells 31 BITS A count of cells lost in a 15-minute interval.
Buffer
Overflow 900 Indicates a count of buffers that have overflowed in a 15-minute period.
Buffer
Underflow 900 Indicates a count of buffers that have under flowed in a 15-minute period.
ATM / TC
Suspect 1 Suspect defines counts that are suspected to have errors but may have been
reset to zero by a user during the reporting period.
Supp 3695745 Suppressed intervals flag indicates that there was no data to report for an
interval (all counts are zero). This saves the user from having to look at a
bunch of zeros and also reduces the size of the PM data files.
Hdr Errs 3695745 Sets a count of errors in the ATM header that the system can incur before
notifying the system administrator.
OAM Rcvd 3695745 A count of Operation, Administration, and Maintenance cells received in a
15-minute period, used for testing purposes such as loopback request
codes.
In Cells 3695745 A total count of all of the cells that have been received on an interface.
This is for user information and not configurable.
Out Cells 3695745 A total count of all of the cells that have been transmitted out from an
interface. This is for user information and is not configurable.
HEC Viols 3695745 Sets a count of Header Error Checksum violations that the system can
incur before notifying the system administrator.
OCDs 900 Sets a count of Out of Cell Delineation anomalies that the system can incur
before notifying the system administrator.
*BPV (Bi-Polar Violation) = Occurrence of pulses of same polarity as the previous pulse except
as part of the B8ZS substitution code.
*ExZ (Excessive Zero) = Occurrence of any zero string greater than “N” contiguous zeros,
where “N” = 7 for B8ZS or 15 for AMI (Alternate Mark Inversion).