General Model and Methods of Fault Locating
Abnormal State of a Service Processing Board
Troubleshooting Service Interruptions
Troubleshooting Transient Service Interruptions
Troubleshooting Pointer Justification
Troubleshooting Protection Switching Faults
Troubleshooting NEs Being Unreachable to the NMS
Troubleshooting Packet Loss in Services
Troubleshooting Equipment Interconnection Faults