Applies to: Exchange Server 2007 SP3, Exchange Server 2007 SP2, Exchange Server 2007 SP1, Exchange Server 2007
Topic Last Modified: 2006-12-08

There are many performance counters that can be used to maintain and troubleshoot a computer that is running Microsoft Exchange Server 2007 that has the Unified Messaging (UM) server role installed. Unified Messaging performance counters are used to measure quantities of information or data for Unified Messaging and are based on the number, size, duration, and rate of data that is being requested or received.

Call Answering Performance Counters

Table 1 provides a list of the call answering performance counters that can be used to monitor Unified Messaging.

Table 1   Unified Messaging call answering performance counters

Performance counter Performance object Description

Average Greeting Size

MSExchangeUMCallAnswering

Average Greeting Size is the average size, in seconds, of recorded greetings that have been retrieved by the UM server.

Average Recent Voice Message Size

MSExchangeUMCallAnswering

Average Recent Voice Message Size is the average size, in seconds, of the last 50 voice messages that have been left for subscribers.

Average Voice Message Size

MSExchangeUMCallAnswering

Average Voice Message Size is the average size, in seconds, of voice messages left for subscribers.

Call Answering Calls

MSExchangeUMCallAnswering

Call Answering Calls is the number of diverted calls that were answered on behalf of subscribers.

Call Answering Escapes

MSExchangeUMCallAnswering

Call Answering Escapes is the number of times a caller pressed the * key to connect to another user instead of leaving a message.

Call Answering Missed Calls

MSExchangeUMCallAnswering

Call Answering Missed Calls is the number of times a diverted call was dropped without a message being left.

Call Answering Voice Messages

MSExchangeUMCallAnswering

Call Answering Voice Messages is the total number of messages that were submitted because the calls were answered on behalf of subscribers.

Call Answering Voice Messages per Second

MSExchangeUMCallAnswering

Call Answering Voice Messages per Second is the number of messages that were submitted because the calls were answered on behalf of subscribers.

Call Failed Because Transport Unavailable

MSExchangeUMCallAnswering

Call Failed Because Transport Unavailable is the number of calls that failed because the transport service is not available to submit the message.

Calls Disconnected by Callers During UM Audio Hourglass

MSExchangeUMCallAnswering

Calls Disconnected by Callers During UM Audio Hourglass is the number of calls during which the caller disconnected while Unified Messaging was playing the audio hourglass tones.

Calls Disconnected by UM on Irrecoverable External Error

MSExchangeUMCallAnswering

Calls Disconnected by UM on Irrecoverable External Error is the total number of calls that have been disconnected after an irrecoverable external error occurred.

Calls Without Personal Greetings

MSExchangeUMCallAnswering

Calls Without Personal Greetings is the number of diverted calls received for subscribers that did not have recorded greeting messages.

Diverted Extension Not Provisioned

MSExchangeUMCallAnswering

Diverted Extension Not Provisioned is the number of calls received for which the diverted extension supplied with the call is not a UM subscriber extension.

Fetch Greeting Timed Out

MSExchangeUMCallAnswering

Fetch Greeting Timed Out is the number of diverted calls for which the subscriber’s personal greeting could not be retrieved within the time allowed.

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