Journal ArticleDOI
Voice over Internet protocol (VoIP)
B. Goode
- Vol. 90, Iss: 9, pp 1495-1517
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TLDR
The factors involved in making a high-quality VoIP call and the engineering tradeoffs that must be made between delay and the efficient use of bandwidth are discussed and various techniques to achieve network quality of service are discussed.Abstract:
During the Internet stock bubble, articles in the trade press frequently said that, in the near future, telephone traffic would be just another application running over the Internet. Such statements gloss over many engineering details that preclude voice from being just another Internet application. This paper deals with the technical aspects of implementing voice over Internet protocol (VoIP), without speculating on the timetable for convergence. First, the paper discusses the factors involved in making a high-quality VoIP call and the engineering tradeoffs that must be made between delay and the efficient use of bandwidth. After a discussion of codec selection and the delay budget, there is a discussion of various techniques to achieve network quality of service. Since call setup is very important, the paper next gives an overview of several VoIP call signaling protocols, including H.323, SIP, MGCP, and Megaco/H.248. There is a section on telephony routing over IP (TRIP). Finally, the paper explains some VoIP issues with network address translation and firewalls.read more
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References
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RTP: A Transport Protocol for Real-Time Applications
TL;DR: RTP provides end-to-end network transport functions suitable for applications transmitting real-time data over multicast or unicast network services and is augmented by a control protocol (RTCP) to allow monitoring of the data delivery in a manner scalable to large multicast networks.
An Architecture for Differentiated Service
TL;DR: An architecture for implementing scalable service differentiation in the Internet achieves scalability by aggregating traffic classification state which is conveyed by means of IP-layer packet marking using the DS field [DSFIELD].
Integrated Services in the Internet Architecture: an Overview
TL;DR: This memo discusses a proposed extension to the Internet architecture and protocols to provide integrated services, i.e., to support real- time as well as the current non-real-time service of IP.
Resource ReSerVation Protocol (RSVP) -- Version 1 Functional Specification
TL;DR: RSVP as discussed by the authors is a resource reservation setup protocol designed for an integrated services Internet that provides receiver-initiated setup of resource reservations for multicast or unicast data flows, with good scaling and robustness properties.
A Border Gateway Protocol 4 (BGP-4)
Yakov Rekhter,T. Li +1 more
TL;DR: This document, together with its companion document, "Application of the Border Gateway Protocol in the Internet", define an inter- autonomous system routing protocol for the Internet.