Installation and Configuration GuideSystem requirements
| Item | Description | 
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 | Communications Server 2007 R2. For more information, visit the Volume | 
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 | Licensing Service Center at www.microsoft.com. | 
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| BlackBerry Attachment Service | You must install the software update for KB22953 on Windows Server 2008 if | 
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 | you want the BlackBerry Attachment Service to support .mp3 audio files on | 
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 | BlackBerry devices and all audio formats on BlackBerry 7100 Series devices | 
| 
 | that support CDMA networks. To download the software update for KB22953, | 
| 
 | visit www.blackberry.com/support/downloads/. | 
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| Remote Desktop Services or Terminal | The BlackBerry Enterprise Server and BlackBerry Enterprise Server components | 
| Services | do not support installation on a computer that you installed Remote Desktop | 
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 | Services or Terminal Services on. | 
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