Minimum requirements:

• IBM compatible PC or laptop Pentium II with 32 MB memory or higher
• Microsoft Windows NT4, 2000 Professional, 2000 Server, Windows XP Home, Windows XP Professional or Windows 2003 Server
• For sending SMS: internet connection and SMS account
• For relaying: compatible telephone system
• Basic ISDN connection or ISDN telephone system with internal S0-Bus
• Communication hardware or software device with CAPI 2.0 interface (like AVM FritzCard PCI).
  See also: Compatible ISDN cards

Recommended system configuration:

• IBM compatibler PC or laptop Pentium III with 128 MB memory or higher
• Windows XP Home, Windows XP Professional or Windows 2003 Server
• For sending SMS: internet connection
• Basic ISDN connection or ISDN telephone system with internal S0-Bus
• Communication hardware or software device with CAPI 2.0 interface (like AVM FritzCard PCI).
  See also: Compatible ISDN cards