The VoIP Test Set for Office Communications Server 2007 R2 supports emulation of a SIP endpoint to test connectivity. Emulation options include the following:

The VoIP Test Set, including the Readme file, is available as a free download at the Microsoft Download Center at http://go.microsoft.com/fwlink/?LinkID=143946 . For details about using the VoIP Test Set, see the Readme file, OCS_VoIPTestSet-Readme.htm.