rfc3054 - Network Working Group P. Blatherwick (Editor)...

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Network Working Group P. Blatherwick (Editor) Request for Comments: 3054 Nortel Networks Category: Informational R. Bell Cisco Systems P. Holland Circa Communications (Chair TIA TR-41.3.4) January 2001 Megaco IP Phone Media Gateway Application Profile Status of this Memo This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited. Copyright Notice Copyright (C) The Internet Society (2001). All Rights Reserved. Abstract This document specifies a particular application of the Megaco/H.248 Protocol for control of Internet telephones and similar appliances: the Megaco IP Phone Media Gateway. The telephone itself is a Media Gateway (MG), controlled by the Megaco/H.248 Protocol, with application control intelligence located in the Media Gateway Controller (MGC). To achieve a high degree of interoperability and design efficiency in such end-user devices, a consistent architectural approach, a particular organization of Terminations and Packages, and a Protocol Profile are described. The approach makes use of existing Protocol features and user interface related Packages, and is thus a straight-forward application of the Megaco/H.248 Protocol. 1. Introduction This document represents the current view from the TIA working group on VoIP (Voice over IP) telephone specification [1], TIA TR-41.3.4, with the intent of using this as part of its "whole device" specification as an optional method of device control. Industry feedback has made it clear that interoperability and acoustic performance of Internet telephones is key to the rapid and extensive commercialization of these products. To facilitate this, the TIA has established working group TR-41.3.4 to develop a standard Blatherwick, et al. Informational [Page 1]
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RFC 3054 Megaco IP Phone Media GW Application Profile January 2001 for VoIP telephones. The TR-41.3.4 working group has included the "whole device" within the scope of the standard, so a full range of requirements including acoustic performance, protocols, methods for powering and safety are provided. Where possible, the requirements are based on existing standards, which are included by reference. The TIA TR-41.3.4 working group has also recognized that its proposed standard must enable creative application of the equipment, encourage the development of new capabilities and allow for high levels of product customization. To achieve this, peer to peer architectures that are based on protocols such as H.323 or SIP and master/slave architectures such as Megaco/H.248 Protocol are both necessary and complementary. In support of the Megaco/H.248 Protocol development effort, the TR- 41.3.4 working group has considered product enabling issues and requirements, and has developed an approach to use the Megaco/H.248 Protocol for Internet telephone device control. This document represents the working group's current view. This document covers the general requirements of the Megaco IP Phone
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This note was uploaded on 09/13/2009 for the course EE 6345 taught by Professor Cantrell during the Spring '09 term at University of Texas at Dallas, Richardson.

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rfc3054 - Network Working Group P. Blatherwick (Editor)...

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