[This is pre-release documentation and subject to change in future releases. This topic's current status is: Milestone-Ready]

Topic Last Modified: 2010-07-15

The following table summarizes the minimum software and hardware requirements needed to install Microsoft Communications Server 2010 Attendant.

Table: System Requirements for Communications Server 2010 Attendant

System Component Minimum Requirement

Display Resolution

Required: Super VGA 1024 x 768

Recommended: Super VGA 1280 x 1024 or higher

Operating System

Windows 7 32-bit operating system.

Windows Vista 32-bit operating system, Service Pack 1 recommended

Windows XP Professional with Service Pack 2, Service Pack 3 recommended


Data and Voice: 1 GHz or larger processor. Support for 32-bit and 64-bit.

For Microsoft RoundTable communications and archival system: 1.8 GHz or larger


On Windows XP: 1 gigabyte (GB) of RAM

On Windows Vista: 2 gigabytes (GB) of RAM

Install Space

At least 100 MB free

Video Memory

Microsoft DirectX 9-capable display adapter, ATI Radeon X300 or NVIDIA GeForce 5600 class equivalent or better with 256 MB of video memory


Microphone and speakers, headset with microphone, or equivalent device.

Recommended: Microsoft UC device, or a phone running Microsoft Communicator “14” Phone Edition.

Bandwidth requirements

Data: 56 kbps (minimum); 56 kbps (high-quality)

Voice: 50 kbps (minimum); 80 kbps (high-quality)

Video: 50 kbps (minimum); 350 kbps (high-quality)

The RoundTable device: 50 kbps (minimum); 350 kbps (high-quality)

The required and recommended bandwidth speeds are cumulative. For example, if you want to use voice, webcam, and RoundTable, the minimum bandwidth would be 50+50+50=150 kbps.

Other Requirements

Microsoft Office Outlook 2007 and Microsoft Exchange Server 2007 are required for Outlook integration options.

The Microsoft .NET Framework 3.5 must be installed on your computer before you install Communications Server 2010 Attendant. You can download it from the following link: http://go.microsoft.com/fwlink/?LinkId=122406.

Microsoft Core XML services (MSXML) 6.0 SP1 must be installed on your computer before you install Communications Server 2010 Attendant. This is already installed on any computer that is running Windows XP SP3 or Windows Vista.

You can download the Core XML services from the following link: http://go.microsoft.com/fwlink/?linkid=144674.