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 based on the number, size, duration, and rate of data that is being requested or received.

Fax Answering Performance Counters

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

Table 1   Unified Messaging fax answering performance counters

Performance counter Performance object Description

Average Fax Message Size

MSExchangeUMFax

Average Fax Message Size is the average size, in kilobytes, of fax messages received.

Average Recent Fax Message Size

MSExchangeUMFax

Average Recent Fax Message Size is the average size, in kilobytes, of the last 20 fax messages.

Fax Call Duration Exceeded

MSExchangeUMFax

Fax Call Duration Exceeded is the number of fax calls that were disconnected because they exceeded the UM maximum call length.

Fax Calls to Non Provisioned Mailboxes

MSExchangeUMFax

Fax Calls to Non Provisioned Mailboxes is the number of calls to extensions that resolved to mailboxes that are not enabled for fax.

Fax Incomplete

MSExchangeUMFax

Fax Incomplete is the number of fax calls that were dropped before completion.

Fax Messages

MSExchangeUMFax

Fax Messages is the total number of fax messages received.

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