• Microsoft Windows 7 Professional / Windows XP Professional (up to 25 Users)
  
• Microsoft Small Business Server 2008 / 2003 (32/64 Bit - up to 25 Users)
• Microsoft Windows Server 2008 R2 (SP 1) / 2008 / 2003 R2 / 2003 (32/64 Bit)

Note:

• Recent service packs mandatory.
• The XPhone UC Server must not be installed on a terminal server.

• VMware ESX / ESXi Server
• Microsoft Hyper-V 

Note:

• For the connection of UM services in virtual environments sufficient system capacity has to be available at all times for the XPhone IP channels (XCAPI interface). A dedicated processor core might be beneficial. For more information, see the technical documentation for XCAPI (found in the installation files).

• up to 25 Users: 2 GB RAM, 10 GB HDD, Current Desktop CPU
• up to 100 User: 2 GB RAM, 25 GB HDD, Current Workstation CPU
• up to 500 User: 4 GB RAM, 50 GB HDD, Current Server CPU
• up to 1,000 User: 4 GB RAM, 100 GB HDD, Current Server CPU
• 1,000 and more Users: on request
  

• Compatible PBX-System with enabled CSTA / TAPI interface

Notes:

• The TAPI driver must be able to monitor all lines of the telephone system.

• Dialogic DIVA BRI-2 / 4BRI-8 / PRI/E1-30 
• TE-Systems XCAPI

• Webprovider (z.B. Mesmo)
• GSM Modem CEP CT63
• ISDN

• Microsoft Exchange 2010 / 2007 / 2003 / 2000
• Lotus Domino 8.5 / 8 / 7 / 6.5 / 6
• Other E-Mailserver with IMAP / SMTP-Support

•  Internet Explorer 7 / Firefox 3 / Safari 3.1 or higher

XPhone Unified Communications in 2011 does not support the following systems and applications:

• Microsoft Windows 2000 Client / Windows 2000 Server
• Microsoft Exchange 5.5
• Microsoft Internet Explorer 6 and earlier
  
• XPhone CTI Team Licenses of Version V1 and V2 

Note: If you want to upgrade from XPhone UC Server V3 to XPhone UC Server 2011, you have to install at least XPhone UC Server V3 Build 328.

 Upgrade to Build 328 available.

The CPU recommendation based on the current Intel Processors classification. XPhone UC Server 2011 contains Microsoft .NET 3.5, Microsoft SQL Express (alternative use of: existing Microsoft SQL Server ) and an integrated Webserver (alternative use of: existing Microsoft IIS Webserver).

• Windows 7 Professional (32/64 bit)
• Windows Vista Business (32/64 bit)
• Windows XP Professional (32 bit)

Note:

• Recent service packs mandatory. 

• Windows Terminal Server 2008 R2 (SP 1) / 2008 / 2003 R2 / 2003 (32/64 Bit)
• Citrix Terminal Server

Note:

• The required memory depends greatly on the specific configuration (such as call load, connected databases, user behavior). Starting with the second user, only a part of the memory requirements of the first user is required. 

• Microsoft Word 2002 or higher (32bit)

Note: 

• Recent service packs mandatory. 

• Microsoft Outlook 2002 / 2003 / 2007 / 2010 (32bit)
• Lotus Notes 6 / 6.5 / 7 / 8 / 8.5
• Tobit David.fx Pro Edition 2011 / David.zehn! Business Edt.

Note: 

• Recent service packs mandatory.

• Internet Explorer 7, Firefox 3, Safari 5

Databases can be connected via the XPhone client or the XPhone server. The integration of data with XPhone Virtual Directory provides additional access via phones, smartphones or the pbx.More Informations.