MetaSwitch

MetaSwitch is an industry-leading vendor of IP Multimedia Subsystem (IMS) switching and applications solutions for both packet and circuit-switched networks. Its widely deployed call agent, media/signaling gateway and application server platform supports a full range of legacy Class 4/5 capabilities and hosted unified communications services.
Customers include incumbent and competitive local exchange carriers, as well as operators of broadband wireless, cable and fiber networks. MetaSwitch is a division of established telecom technology provider Data Connection. The company is consistently profitable and privately held, with main U.S. offices in California and Virginia, and European headquarters in London, U.K. 

Integration description:
MetaSwitch has tightly integrated its award-winning hosted PBX solution with Snom's family of IP phones to deliver a full range of advanced business calling features including attendant console, shared line appearance, distinctive ringing, intercom/pager, message waiting indicator, automatic configuration, speed dials, intra/extra-business group calling name, and flexible dialing plans.
The MetaSwitch hosted PBX solution includes Web-based subscriber self-provisioning and administration for all phone features, unified messaging and auto attendant - including custom announcements, music on hold and business hours settings. Being built on a robust Class 4/5 softswitch architecture, the solution is carrier-class and integrates seamlessly with both legacy TDM and next generation IP networks, as well as supporting fixed/mobile convergence applications that tie together the Snom desk phone with roaming cellular clients.