Interesting press release from Interop Las Vegas 2007
... These industry leaders are extending their support for unified communications software from Microsoft by implementing the company’s interoperability specification for Microsoft® Office Communications Server 2007. This broad interoperability will help businesses deploy software-based unified communications and cost-effectively adapt to voice and data network convergence.
In the two months since Microsoft published the interoperability specification, global telephony and networking companies such as Alcatel-Lucent, Avaya Inc., Cisco Systems Inc., Ericsson, Genesys Telecommunications Laboratories Inc., Mitel Networks Corp., NEC Corp., Nortel Networks and Siemens Enterprise Communications, and gateway providers AudioCodes Ltd., Dialogic Corp. and Quintum Technologies Inc. have stated their support for the interoperability specification for Microsoft Office Communications Server 2007. Together these vendors provide interoperability with approximately 90 percent of communication systems.Read the full press release here