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Outgoing PSTN calls are unavailable and Event ID 46020 is logged on an Office Communications Server 2007 R2 front-end server

Outgoing Public Switched Telephone Network (PSTN) calls are unavailable in an Microsoft Office Communications Server 2007 R2 environment. Additionally, you find the following Event is logged on the Office Communications Server 2007 R2 front-end server:

Event Type: Error
Event Source: OCS Outbound Routing
Event Category: (1038)
Event ID: 46020
An unexpected exception occurred while loading configuration data and outbound calls may be affected.
Stack: at System.Runtime.InteropServices.Marshal.ThrowExceptionForHRInternal(Int32 errorCode, IntPtr errorInfo)at System.Management.ManagementObjectCollection.ManagementObjectEnumerator.MoveNext()at Microsoft.Rtc.OutboundRouting.Settings.LoadWmiClass(String className, CallBack callback)at Microsoft.Rtc.OutboundRouting.Settings.LoadPhoneUsages()at Microsoft.Rtc.OutboundRouting.Settings.Load()
This could be caused due to failure to contact the DC. Review other WMI event log entries for details.
If this persists, restart the front end service.

This issue occurs because of an error that is encountered when Office Communications Server 2007 R2 loads the Outbound Routing policies.
To fix this problem, install the following cumulative update:
983472 Description of cumulative update for Office Communications Server 2007 R2: July, 2010
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about the latest updates for Communications Server 2007 R2, click the following article number to view the article in the Microsoft Knowledge Base:

968802 Updates for Communications Server 2007 R2


Article ID: 2254197 - Last Review: 07/22/2010 16:28:00 - Revision: 1.0

  • Microsoft Office Communications Server 2007 R2 Enterprise Edition
  • Microsoft Office Communications Server 2007 R2 Standard Edition
  • kbqfe kbsurveynew kbexpertiseinter kbprb KB2254197
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