PERFORMANCE MONITORING: TOTAL AVAIL UNVAIL LOCAL END 08:37:29 08:37:29 00:00:00 REMOTE END 08:37:29 08:37:29 00:00:00 LOCAL END 100.00 REMOTE END 100.00 Figure 3.83 Example of PCM statistics (EFS, error-free second; DM, degraded minute) The AAL2 successful connection ratio is as follows: SuccessfulConnectionEstablishment AAL2UserPlaneSignallingSucces = 100 X (3.77) SuccessfulConnectionEstablishment + NetworkOutofOrder + TemporaryFailure + Congestion + UnavailabelChannel + Unavailable Resource + Un Supported AALParameters + InvalidMessage + Missing Information Element + Not ImplementedMessage + InvalidInformationElement + InvalidInformation + ERQ-TimerExpiry + REL_TimerExpiry + RES_TimerExpiry + BLO_TimerExpiry + UBL_TimerExpiry + UnrecognizedParameter +OSAIAllocationFailure+ChannelUnavailable + AdjacentNodeUnaviable Transmission Network Optimisation Table 3.18 Examples of AAL2 counters Description of counter Successful connection Signalling link counter counting for successful connection establishment establishments. The number of connection events started in the AAL2 signalling. Network out of order Signalling link counter counting for network out of order messages (cause 38) Temporary failure Signalling link counter counting for temporary failure messages (cause Congestion Signalling link counter counting for switching equipment congestion messages (cause 42) Unavailable channel Signalling link counter counting for requested circuit/channel not available occurrences (cause 44) Unavailable resource Signalling link counter counting for resource unavailable unspecified occurrences (cause 47) Unsupported AAL Signalling link counter counting for AAL parameters can not support parameters occurrences (cause 93) Invalid message Signalling link counter counting for invalid messages (cause 95) Missing information Signalling link counter counting for mandatory information element element missing occurrences (cause 96) Not implemented message Signalling link counter counting for message type nonexistent or not implemented 