Office Communications Server 2007 VoIP Test Set
Microsoft Office Communications Server 2007 VoIP Test Set enables you to simulate a SIP endpoint to test connectivity.
Its actually i very cool tool for testing the setup of your Enterprise Voice solution. Its easy to use, and to logfiles generated i usefull for troubleshooting you configuration.
Heres some info from MS:
VoIP Test Set for Office Communications Server 2007 supports emulation of a SIP endpoint to test connectivity. Emulation options include the following:
Client emulation – To emulate a Microsoft Office Communicator client, you specify a SIP-enabled user account to register with Office Communications Server. This can be useful for troubleshooting problems with incoming or outgoing Enterprise Voice calls. For example, an Office Communications Server engineer can use the tool in client emulation mode to quickly change user location profile information and validate that outbound routing is properly configured.
Server emulation – You can use VoIP Test Set to emulate a Mediation Server or a gateway. To emulate a server, you specify the IP address, port number, and other settings of the server to be emulated. This can be useful for emulating components during the setup of the Office Communications Server 2007 infrastructure to verify the functionality of components that have already been deployed. For example, you might use the tool to receive and make calls directly from an IP/PSTN gateway to ensure that it is completely functional before deploying the complete Office Communications Server 2007 infrastructure.