Microsoft Office Communications Server 2007 R2 Enterprise Voice is Microsoft’s software-powered voice over IP (VoIP) solution. Enterprise Voice is a SIP-based, enterprise-level implementation of IP telephony that does not rely on proprietary hardware.

The supported Enterprise Voice configurations are as follows:

To interface with the public switched telephone network (PSTN), all topologies require one of the following:

Integration with Microsoft Exchange Server 2007 Unified Messaging (UM) provides call answering, subscriber access, fax support, and auto attendant services to Office Communications Server Enterprise Voice deployments.

For details about partners who offer Enterprise Voice solutions, see the Microsoft Unified Communications Partners page at .

For details about partners who offer Enterprise Voice hardware solutions, including media gateways, see .

See Also

Other Resources

Planning for Voice