quality of service for voice over ip solutions guide

... các sản phẩm VoIP Mục tiêu cho các nhà phát triển khá đơn giản: bổ sung khả năng gọi điện thoại (cả truyền thoại lẫn báo hiệu) cho các mạng nền IP và kết nối chúng với mạng điện thoại công cộng ... dụng thoại. Phần lớn các ứng dụng VoIP sẽ là các hoạt động thời gian thực. Tuy nhiên, các dịch vụ thoại lu rồỉ truyền cũng đợc thi hành bằng cách sử dụng VoIP. Chẳng hạn, các thôn...

Ngày tải lên: 31/08/2012, 10:00

... (earth) or a 41 Voice over IP Fundamentals Copyright Information Copyrightâ 2000 Cisco Press Cisco Press logo is a trademark of Cisco Systems, Inc. Published by: Cisco Press 201 West 103rd ... into the voice realm. They also act as a good primer for those in specific voice areas that want to brush up on various other voice- networking protocols. Chapter...

Ngày tải lên: 14/09/2012, 11:42

... PREFACE In general, voice transmission over the Internet protocol (IP) , or VoIP, means transmission of real-time voice signals and associated call control information over an IP- based (public or ... 67 6 VoIP Deployment in Enterprises 68 IP- Based Endpoints: Desktop and Conference Phones, 69 IP- PBX, IP Centrex, and IP- Based PBX Tie Lines, 71 IP- VPN and VoIP for Tele-Worker...

Ngày tải lên: 15/09/2012, 10:04

... 16 [VOICE OVER IP] CH NG I: T NG QUAN V VOIPƯƠ Ổ Ề 1. Gi i thi u chung v VoIP.ớ ệ ề Voice over Internet Protocol (VoIP) là m t công ngh cho phép truy n tho iộ ệ ề ạ s d ng giao th c m ng IP, ... nói (Voice Compression)ọ Page 8 [VOICE OVER IP] 3.2 B giao th c ộ ứ SIP. SIP: (Session Initiation Protocol) đ c phát tri n b i IETF ( Internetượ ể ở Engineering Task Force) MMUSIC...

Ngày tải lên: 09/10/2012, 16:40

... Management 1 Quality of Service in IP Networks CH-1015 Ecublens http://icawww.epfl.ch Prof. Jean-Yves Le Boudec Prof. Andrzej Duda Prof. Patrick Thiran LCA-ISC-I&C, EPFL Queue Management 5 Principles ... sending large packets get more l cost of flow classification Queue Management 3 Improving QOS in IP Networks o IETF groups are working on proposals to provide better...

Ngày tải lên: 06/04/2013, 11:05

... 1. Overview of the PSTN and Comparisons to Voice over IP The Public Switched Telephone Network (PSTN) has been evolving ever since Alexander Graham Bell made the first voice transmission over ... where the PSTN could be improved and ways in which it and other voice networks are evolving to the point at which they combine data, video, and voice. Th...

Ngày tải lên: 30/09/2013, 05:20

... type of traffic is "special" or important and to queue the traffic based on that information instead of when a packet arrives. The 140 Chapter 9. Quality of Service Quality of service ... service (QoS) is an often-used and misused term that has a variety of meanings. In this book, QoS refers to both class of service (CoS) and type of service (ToS)....

Ngày tải lên: 30/09/2013, 05:20

... session target ipv4:192.168.102.2 ! dial-peer voice 2 voip description "calls to Denver office" destination-pattern 5…. ! dial-peer voice 3 voip description "calls to IP Phones ... interface FastEthernet 1/0/0 ip address 192.168.100.1 255.255.255.0 ipx network 100 ! interface FastEthernet 1/0/1 225 Chapter 15. Voice over IP Applications and Se...

Ngày tải lên: 30/09/2013, 05:20

... MTU size, use the ip mtu command; this command affects only IP traffic. Configuring Voice over IP for the Cisco 3600 Series VC-13 Configuring Voice over IP for the Cisco 3600 Series This chapter ... to configure Voice over IP (VoIP) on the Cisco 3600 series. For a description of the commands used to configure Voice over IP, refer t...

Ngày tải lên: 22/10/2013, 09:15

... several ac- cess classes. Every terminal is assumed to demand all four classes of access. In case of satura tion analysis, it is assumed that a packet is always available for transmission. For AC3 ... calculate the behavior of the proposed model in comparison with EDCA. The performance of the MAC protocols is tested for variable number of contending stations, basic...

Ngày tải lên: 22/06/2014, 22:20

... compensators. 4. TALBOT-BASED COMPENSATION 4.1. Self-imaging Light propagation is a spatial phenomenon and therefore it associates three dimensions x, y (transversal), and z (prop- agation) in a physical harmony, ... channels. As a consequence, each RF channel may belong to a differ- ent system such as a d hoc wireless and cellular systems. The transmission of RF signals over...

Ngày tải lên: 22/06/2014, 22:20

... of the existing diversity in a flexible manner, trading diversity gain against data rate and thus augmenting the diversity order and outage probability for fulfilling the quality of service (QoS) requirements. ... and MIMO signal processing for mobile communications. EURASIP Journal on Applied Signal Processing 2004:5, 662–675 c  2004 Hindawi Publishing Corporation Ge...

Ngày tải lên: 23/06/2014, 01:20

... quality-of-service renegotiating schemes for streaming video. The token bucket model, whose parameters are token filling rate and token bucket size, is adopted for the video traffic model. The renegotiating ... complexity increases. Effective Quality-of-Service Renegotiating Schemes for Streaming Video 287 Table 10: Performance comparison between the proposed algorithm an...

Ngày tải lên: 23/06/2014, 01:20

... of Congress Cataloging-in-Publication Data Chandra, Praphul. Wi-Fi telephony : challenges and solutions for voice over WLANs / by Praphul Chandra and David Lide. p. cm. Includes index. ISBN-13: ... 0-7506-7971-9 (pbk. : alk. paper) 1. Internet telephony 2. Wireless LANs. I. Lide, David R., 1928- II. Title. III. Title: Challenges and solutions for voice over...

Ngày tải lên: 06/07/2014, 15:38

... solutions. 1-2 Quality of Service for Voice over IP Solutions Guide Version 1.0 Chapter 1 QoS for Voice over IP Solutions Overview About VoIP The Quality of Service for VoIP Solutions Guide focuses ... v Quality of Service for Voice over IP Solutions Guide Version 1.0 Preface This preface introduces the QoS for Voice Over IP...

Ngày tải lên: 16/11/2014, 19:57