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Mark A. Miller

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Intermedia: Integrated voice, e-mail, and UC services.
Intermedia.net, Inc., headquartered in New York, New York, is a privately held firm that has developed an interesting niche in the communications services business: hosting Microsoft Exchange services, along with other enhanced communications services to...
Nuvio: Trunking, hosted PBX, and a unique VoIP plan.
Nuvio Corporation, headquartered in Overland Park, Kansas, has been providing VoIP solutions since 2003, making them relative veterans in this young industry. Nuvio’s focus is on providing business class VoIP solutions to small and medium-size...
TelCentris: Telecom services for individuals, businesses, and other telecom providers.
TelCentris, Inc., headquartered in San Diego, California, is an innovative unified communications and telecommunications provider developing advanced communications solutions for both business and consumer markets. The company opened its doors in...
OneStream Networks: Comprehensive VoIP and data services.
OneStream Networks LLC, headquartered in Rochester, New York, is a managed IP services provider specializing in global, enterprise-grade IP communications for mid-market businesses. The privately held company was founded in 2004, and since then has expanded...
Broadview Networks: A phone service solution for every business.
Broadview Networks, Inc., headquartered in Rye Brook, New York, is a network-based business communications provider serving customers throughout the Northeast and Mid-Atlantic regions. (As of September 17, 2009, Broadview will be offering its OfficeSuite...
Peel the OSI Layer Model Onion
Our last two tutorials have explored the five key areas of network management and some of the classic solutions to these network management challenges. Many of these standards and methodologies, such as the five functional areas of network management, are...
Smoothstone IP Communications: The Voice of Experience
Smoothstone IP Communications, headquartered in Louisville, Kentucky, was founded in 2000 as a next-generation IP services company, and became the first managed VoIP services company in the United States. This privately held firm developed a proprietary IP...
Ready for VoIP: Managing the Upper Layers
Our last tutorial began a process of breaking down the broad range of network management functions into smaller pieces, based on the well-known Open Systems Interconnection (OSI) model. In that first part, we examined the Physical, Data Link and Network...
What is H.323? VoIP Protocol Architecture & History
There are two significant VoIP architectures implemented today: H.323, developed by the International Telecommunications Union—Telecommunications Standard Sector (ITU-T), and the Session Initiation Protocol (SIP), developed by the Internet Engineering...
Why TCP/IP Is not Sufficient for VoIP
As we discussed in our first Fundamentals of VoIP tutorial, Voice over Internet Protocol (VoIP) networks combine both voice and data communications networking technologies. The combinationis somewhat like a marriage, in which two unique systems endeavor to...