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ROADMAP-TO-NGN-1 Roadmap to NGN Documents Issue 2, August 2008 Your Roadmap to NGN Documents 3–20 4.73 Equipment 4.74 Software 4.75 CircuitPack 4.76 Termination Point 4.77 Equipment Holder 4.78 Link End Appendix A: Information Model IDL A.1 IDL Definition
ROADMAP-TO-NGN-1 Issue 2, August 2008 Roadmap to NGN Documents Your Roadmap to NGN Documents 3.3 NGN Special Reports (SR) Documents This section lists all the Telcordia Special Reports documents related to NGN. A Document Abstract and an abridged Table of Contents for each document is provided. SR-4717, Voice Over Packet in Next Generation Networks: An Architecture Framework The network of the future will be dominated by data, and Next Generation Networks (NGN) are being built for this purpose. At the heart of NGN is Voice over Packet (VoP), a packet-switched architecture that includes Voice over Internet Protocol (VoIP), Asynchronous Transfer Mode (ATM), and Frame Relay. In such packet-based environments, voice, data, fax, and video will be run over a single network. The result will be network and operations cost efficiencies and an increase in carrier revenues through the creation of new services. This Special Report explains the essential elements needed to build VoP networks. It provides a comprehensive framework for the support of voice and other narrowband services over packet-based networks. The VoP network that is discussed in this document places significant emphasis on interoperability, scalability, and seamless interworking with the Public Switched Telephone Network (PSTN). Such issues will be important for the VoP solution to be widely deployed. This document is organized into 7 sections: Section 1 presents introductory and background information, and discusses the motivation for Voice over Packet. Section 2 presents an overview of the current industry and standards activities on VoP, and discusses the need for VoP Generic Requirements (GRs). Section 3 identifies characteristics of a VoP network, such as network services, network capabilities, as well as its relationship with the Next Generation Network. Section 4 describes the high-level VoP architecture framework, together with illustration of the call flows and identification of GRs needed for VoP. Section 5 discusses the functionality of the significant components of a VoP network. Section 6 presents the Operations and Maintenance framework for VoP and the major issues involved. Section 7 discusses the migration strategies for various existing networks toward the VoP network discussed, and the migration beyond VoP and toward NGN. Contents 1. Introduction and Background 2. Current Industry Status 2.1. Network Operators 2.2. Supplier Segment 2.3. Standards and Forum Segment 2.4. Need for Generic Requirements 3–21
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