1152700• Issue 1 • February 2001 • Section 2 Operations and Maintenance
Page 7 of 23
Table 4-1. Alarm Identifications, continued
ALARM MESSAGE
| SEVERITY |
| IMPACT |
|
|
|
|
|
|
|
|
| DESCRIPTION |
| SUGGESTED COURSE OF ACTION |
|
|
|
|
|
|
|
|
Discard
Header
Error
Count
Violation
Threshold
Crossing
Alert
DiscardHec VioThresho ldExceeded
EIM Removed
Egress
Congestion
High
Threshold
Crossing
Alert
EgressCong estHighTca
Endpoint
Alarm
Indication
Signal
EndpointAI
S
Information | Service |
al Alert | Degradation |
|
|
Information | Service |
al Alert | Degradation |
Information | Service |
al Alert | Degradation |
|
|
Minor | Service |
| Affecting |
|
|
Cells discarded due to Header Error Checksum have crossed the user definable threshold setting causing a Threshold crossing alert (TCA).
EIM has physically been pulled from the backplane.
Cells congested on the egress of reported port have crossed a user definable threshold level.
Endpoint of reported connection is receiving AIS code due to a failure somewhere in the connection path.
Could be caused by a port failure at any ATM interface. Verify the port is online, check configuration, look for indications of high BER (Bit Error Rate), increase threshold settings if necessary, use line loopback to troubleshoot path through port.
Install EIM card as needed.
Review traffic contracts and modify threshold level if needed. Monitor for future congestion alarms. Cells tagged for discard become susceptible to termination.
Check connection originating point by retrieving connection status and using OAM loopback from test equipment. Check input at the Electrical Interface Module (EIM) and the facility status on the Access Interface Card (AIC).
Endpoint | Minor | Service |
Loss of |
| Affecting |
Clock |
|
|
EndpointL |
|
|
OC |
|
|
Endpoint | Minor | Service |
Remote |
| Affecting |
Defect |
|
|
Indication |
|
|
EndpointR |
|
|
DI |
|
|
No ATM cell traffic is present at connection endpoint.
Endpoint remote defect indication. AIS is detected by the remote endpoint causing an RDI.
Perform ATM loopback to verify path continuity through port.
Check the AIC and EIM that feed the traffic for the connection.
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© 2000, ADC Telecommunications, Inc.
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