A deep dive into the Office Communicator 2007 R2 file transfer process

I had an opportunity recently to dig into the file transfer mechanism in Microsoft Office Communicator 2007 R2 (MOC).  As you may already know, although a server from the OCS Pool is used to route setup information for the file transfer session between the participating clients, the file transfer itself occurs peer-to-peer directly between the…

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How to locate and dial a mail-enabled contact using the Directory Search functionality in Unified Messaging

Contrary to statements published in various third party integration documents, it is possible to include mail-enabled contacts in the Directory Search functionality of a Dial Plan or an Auto Attendant in Unified Messaging.  Although the following configuration steps can provide this functionality, you should exercise caution when enabling outbound dialing from Unified Messaging. Calls to…

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How to enable ‘broadcast’ functionality for voice mail messages in Exchange 2007 Unified Messaging

In Exchange 2007 Unified Messaging, there are no options exposed within the Exchange Management Console that would allow an administrator to configure broadcast or announcement capabilities for voice mail messages.  For example, let’s say that you need to send a voice mail message to your entire staff announcing a mandatory meeting later today.  There really…

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‘Incompatible Security Setting’ error encountered when calling voice mail from Microsoft Office Communicator

After successfully integrating Office Communications Server 2007 with Exchange Unified Messaging, you may find that you are unable to call voice mail to check for new messages from your Office Communicator client.  Upon placing the call, you may receive an ‘Incompatible security setting’ error as shown below: In OCS 2007 R2, both Standard Edition servers…

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Error joining IM/LiveMeeting conferences in Office Communications Server 2007

You may find that all users within an OCS Pool are unable to join a three-way IM conference or join a Live Meeting conference in Office Communications Server 2007.  In examining the logs of the OCS 2007 Front End server, you may see the following related events: Event Type:    Error Event Source:    OCS MCU Infrastructure…

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A noisy (and annoying) red herring in Microsoft Exchange Unified Messaging…

After integrating Office Communications Server 2007 R2 with Microsoft Exchange Unified Messaging, you will likely begin seeing the following warning events in the application log of your Exchange UM server:   Log Name:      Application Source:        Microsoft Exchange Speech Engine Date:          3/18/2009 3:20:59 PM Event ID:      32768 Task Category: Telephony Application Host Level:         Warning Keywords:      Classic…

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File transfer problems in OCS 2007 R2 Group Chat

After installing the Group Chat component from Office Communications Server 2007 R2, you may encounter the following error while attempting to upload or download files while joined to a chat room (see screenshot): A file transfer error occurred.  Server was unable to process request. —> Object reference not set to an instance of an object….

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OCS 2007 R2 Group Chat on Windows Server 2008

Recently I worked with a customer who was trying to install OCS 2007 R2 Group Chat on a member server running Windows Server 2008.  Each time the customer launched ServerSetup.EXE to install Group Chat, he encountered error 0x80070005 (Access is Denied) while binding to the IIS metabase path IIS://localhost/W3SVC/1, as shown in the following screenshot:…

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Integrating AudioCodes MP-114/MP-118 Media Gateways with Microsoft Unified Communications Products

  As one of the Subject Matter Experts (SMEs) for the Microsoft Exchange Unified Messaging product within Microsoft CSS, I am often asked how to provide PSTN connectivity to both Office Communications Server 2007 and to Exchange UM.  Microsoft has worked with a number of vendors to establish support guidelines for IP PBX and IP…

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How to troubleshoot OCS Mediation server Quality of Service Event ID 25022

  This week I accepted a case escalation out of Microsoft EMEA which involved the Quality of Experience monitoring and reporting component of Office Communications Server 2007. Knowing absolutely nothing about QoE, I downloaded the OCS 2007 Quality of Experience Monitoring Server package from Microsoft and added it to my existing lab environment. After an…

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