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Appendix B: Enterprise Voice-Related Performance Counters

Communications Server 2007 R2

Topic Last Modified: 2009-05-22

Office Communications Server provides performance counters that you can use with Performance Monitor to identify a failure that may require troubleshooting. The following table describes Office Communications Server performance counters that can indicate configuration issues which can affect Enterprise Voice calls.

For details about using Performance Monitor, see Perfmon at Microsoft TechNet at http://go.microsoft.com/fwlink/?LinkId=143009.

Table 10. Performance counters that can indicate Enterprise Voice issues

Issue Troubleshooting Process

NUM_EXUM_TIMEOUT_OR_FAILURE

Indicates timeouts or failures experienced when routing a call to ExUM. See Troubleshooting Network Issues with Exchange Unified Messaging.

NUMFAILEDOUTBOUNDCALLS

Is incremented when an outbound Office Communications Server to PSTN/PBX call fails. The failure can be caused by a variety of reasons, such as a configuration error or network connectivity problem. See Troubleshooting General Network Issues.

NUM_INVALID_LOCATION_PROFILE

Is incremented when Office Communications Server receives an INVITE with a phone-context parameter that references an incorrectly formatted or unknown location profile. See Creating and Configuring Location Profiles in the Administering Office Communications Server 2007 R2 documentation.

NUM_NOMATCH_RULES_IN_LOCATION_PROFILE

Indicates that a user dialed a number for which a corresponding normalization rule does not exist in the location profile. See Creating and Configuring Location Profiles in the Administering Office Communications Server 2007 R2 documentation.

NUM_RECEIVE_5XX_FROM_VoIP_GATEWAY

Is incremented when a Mediation Server or gateway sends a 5xx response to an INVITE. It indicates the inability of the Mediation Server or gateways inability to handle the call due to an overload or other error (related to event 46026). See Outbound Routing Events Related to Enterprise Voice.

NUM_CALLS_DENIED_NO_GATEWAY

This counter is incremented when a route is chosen for a call, but the gateway list is empty (related to event 46017)

NUM_CALLS_DENIED_NO_ROUTE

Indicates that no matching route could be found for the dialed number. This could be caused by one of the following:

  • The user is not authorized to dial the number based on their policy.
  • The user dialed an invalid number
  • A network configuration error.

See Configuring Outbound Call Routing for Enterprise Voice in the Administering Office Communications Server 2007 R2 documentation.

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