• H.225 RAS Reject: An H.225 Registration, Admission and Status (RAS) request has been rejected by a Gatekeeper.

• H.225 Call Signaling (Q.931) - Call Dropped: An H.225/Q.931 Signaling Protocol RELEASE COMPLETE message with a cause other than most “normal” causes is observed on a previously established call.

• H.225 Call Signaling (Q.931) - Call Rejected: An H.225/Q.931 Signaling Protocol RELEASE COMPLETE message with a cause other than most “normal” causes is observed on a previously established call.

• H.245 Control Reject: An H.245 Control Protocol Request has been rejected.

• Low MOS-CQ: The PMOS-CQ score for a VoIP flow has dropped below the threshold specified in the EventFinder settings.

• Low R Factor Conversational: The R-Conversational factor for a VoIP flow has dropped below the threshold specified in the EventFinder settings.

• MGCP - Transient Error: Resource not available error has occurred, causing the current operation to fail, but with the expectation that the same operation can be fulfilled in a future request.

• MGCP - Permanent Error: A permanent error has occurred that can not be fulfilled in future requests and will not disappear with time.

• MGCP - Connection Deleted or Restart in Progress: The gateway is deleting or restarting a connection to a Call Agent.

• RTP Excessive Jitter Detected: By checking the timestamps of arriving RTP packets, the Expert has detected excessive interarrival jitter (packets which are not arriving at constant intervals). Ideally, jitter should be near zero. To report events based on the jitter values contained within RTCP packets, see the RTP Excessive Jitter Reported event.

• RTP Excessive Jitter Reported: RTP interarrival jitter (packets which are not arriving at constant intervals) is reported by the recipient in its Real-time Transport Control Protocol (RTCP) report (usually sent at 5 second or shorter intervals). Ideally, jitter should be near zero. To report events based on the RTP packet timestamps, see the RTP Excessive Jitter Detected event.

• RTP Excessive Packet Loss Detected: Analysis of captured RTP packets shows a packet loss level above the threshold specified in the EventFinder settings.

• RTP Excessive Packet Loss Reported: An RTCP packet has reported that a receiver has seen a packet loss level above the threshold specified in the EventFinder settings.

• RTP Not Marked for QoS: IP QoS is not enabled on the device that forwarded the received packet.

• RTP Late Packet Arrival: An RTP packet arrived later than expected.

• RTP Packet Out of Sequence: An RTP packet has arrived ahead of a previously sent RTP packet.

• SCCP Station Alarm - Advisory: The Cisco Skinny Client Control Protocol (SCCP) defines eight levels of station alarms. The expert groups the lower four station alarms in this category. This includes Debug, Informational, Notice, and Warning. The upper four are grouped into the “SCCP Station Alarm – Critical” group.

• SCCP Station Alarm - Critical Alert: The Cisco Skinny Client Control Protocol (SCCP) defines eight levels of station alarms. The expert groups the top four most severe station alarms in this category. This includes Emergency, Alert, Critical, and Error. The lower four are grouped into the “SCCP Station Alarm – Advisory” group.

• SCCP Station QoS Error: A Cisco SkinnyEP (RSVP Agent) is reporting an error to Call Manager.

• SCCP Station Register Reject: The Call Manager is rejecting a station’s attempt to register.

• SIP Post-Dial Delay Exceeded: The delay between a client’s first Session Initialization Protocol (SIP) INVITE request and the resulting 180-Ringing response from a server exceeded the threshold.

• SIP Redirection: A client's Session Initialization Protocol (SIP) request resulted in a 3xx-Redirection response from a server.

• SIP Client Authentication Required: A client's Session Initialization Protocol (SIP) request resulted in a 401-Unauthorized or 407-Proxy Authentication Required response from a server.

• SIP Client Error: A client’s Session Initialization Protocol (SIP) request resulted in a 4xx-Request Failure response from a server.

• SIP Server Error: A client’s Session Initialization Protocol (SIP) request resulted in a 5xx-Server Failure response from a server.

• SIP Global Error: A client’s Session Initialization Protocol (SIP) request resulted in a 6xx-Global Failure response from a server.