3.VoIP Architecture - MSF Technical Report...

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MSF Technical Report MSF-TR-ARCH-001-FINAL Next-Generation VoIP Network Architecture Authors: Paul Drew pd@metaswitch.com MetaSwitch Chris Gallon cgallon@ftel.co.uk Fujitsu www.msforum.org March, 2003
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MSF TR-ARCH-001 2003-03-07 ABSTRACT This white paper is part of series of white papers that will be published by the MSF in 2003. The series of white papers explore the issues motivating the MSF 2003 work plan. The white papers also discuss the solution space within which the MSF will work and identify a proposed work program for 2003. The end goal of the 2003 work program will be a second Global MSF Interoperability (GMI2004) event. This White paper identifies and characterizes the primary issues that must be addressed in defining a large scale VoIP network that is capable of supporting, but is not necessarily limited to, full PSTN equivalence. It also provides the foundation for the other white papers in the series. DISCLAIMER The following is a technical report of the Multiservice Switching Forum. The information in this publication is believed to be accurate as of its publication date. Such information is subject to change without notice and the Multiservice Switching Forum is not responsible for any errors or omissions. The Multiservice Switching Forum does not assume any responsibility to update or correct any information in this publication. Notwithstanding anything contained herein to the contrary, neither the Multiservice Switching Forum nor the publisher make any representation or warranty, expressed or implied, concerning the completeness, accuracy, or applicability of any information contained in this publication. No liability of any kind whether based on theories of tort, contract, warranty, strict liability or otherwise, shall be assumed or incurred by the Multiservice Switching Forum, its member companies, or the publisher as a result of reliance upon or use by any party of any information contained in this publication. All liability for any implied or express warranty of merchantability or fitness for a particular purpose, or any other warranty, is hereby disclaimed. For addition information contact: Multiservice Switching Forum 39355 California Street, Suite 307, Fremont, CA 94538 (510) 608-3990 (510) 608-3995 (fax) info@msforum.org http://WWW.MSFORUM.ORG Copyright © Multiservice Switching Forum 2003
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MSF TR-ARCH-001 2003-03-07 Page 3 of 19 Executive Summary The term “Voice over IP” (VoIP) describes the transport of voice over IP based networks, it is a generic term that covers deployments ranging in complexity from hobbyists using the internet to get free phone calls on a peer to peer basis, to full scale PSTN replacement networks. In carrier networks VoIP has been mainly deployed in enterprise networks or as a trunking technology to reduce transport costs in voice backbone networks. However with many network operators facing eventual equipment obsolescence in their existing narrowband PSTN networks and with the drive to increase revenue by offering new and innovative
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3.VoIP Architecture - MSF Technical Report...

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