Adtran Inc. provides networking and communications products that enable voice, data, video, and Internet communications across a variety of network infrastructures
Avaya Inc. is a global provider of business communications and collaboration systems and services, including unified communications, real-time video collaboration, contact center, networking, and related services.
BroadSoft Inc. is a provider of software and services that enable mobile, fixed-line, and cable service providers to offer Unified Communications over their IP networks.
Broadview Networks Inc. provides local and long-distance voice and data communications, premises-based and patented hosted VoIP systems, data services, and a full suite of managed and professional services, as well as a portfolio of bundled, hosted IP phone and cloud computing services.
Cisco Systems Inc. is a provider of IP-based networking and other products related to the communications and IT industry.