I am pleased to announce the first in a series of Whitepapers from VoIP-Facts.net is available for download on the home page, or, right here!
VoIP Call Control: The Signaling Protocols of Voice over IP Telephony explores the history of the signaling protocols and their technical differences and similarities.
Starting in the mid nineties, when it became clear that voice was coming to IP, standards committees began working to segregate call control from the actual media streams. This whitepaper starts with describing the physically decomposed multimedia gateway concept, and the various protocols that followed.
Technical specifications of the Simple Gateway Control Protocol, MGCP and Megaco, the ITU H.323 Protocol, and the Session Initiation Protocol are all discussed in detail. The paper ends with a look at the future of the signaling protocol, the ITU’s Advanced Multimedia System project slated for standardization in 2010.
This first whitepaper is written from a technical perspective for a technically oriented audience. I hope that those that are interested will take a look. Comments and constructive criticism would be greatly appreciated, as well as pointing out any inaccuracies that may exist. I look forward to hearing from you.
Mike
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