When you install Microsoft Office Communications Server 2007 R2 front-end server on a computer that has more than 16 CPU cores, you find that the following services do not start:
Outside Voice Controlservice
Additionally, you may find an event log that resembles the following on the front-end server:
Log Name: Office Communications Server Source: OCS ApplicationSharing Conferencing Server Date: <Date & Time> Event ID: 32010 Task Category: (1304) Level: Error Keywords: Classic User: N/A Computer: <Server Name> Description: The description for Event ID 32010 from source OCS ApplicationSharing Conferencing Server cannot be found. Either the component that raises this event is not installed on your local computer or the installation is corrupted. You can install or repair the component on the local computer.
To fix this problem, install the following cumulative update:
2400399 Description of the cumulative update for Office Communications Server 2007 R2, Unified Communications Managed API 2.0 Core Redist 64-bit: September 2010
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.