Voice Over Ip Fundamentals

Author: Jonathan Davidson
Editor: Cisco Press
ISBN: 1587052571
File Size: 33,30 MB
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Previous ed. by Jonathan Davidson, James Peters, 2000.

Voice Over Ip Networks

Author: Marcus Gonçalves
Editor: McGraw-Hill Companies
ISBN: 9780079137838
File Size: 59,92 MB
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Once a guest on telephone lines, the Net now threatens a takeover of its host's principal function: voice-to-voice communications. For intrabusiness use or as a public system, Internet-based telephony can be a real money-saver - or money-maker. In Voice Over IP Networks, you'll learn everything you need to: transmit real-time voices over the Internet; understand the technology and its costs; compare leading vendors and their Internet telephony products - 3Com, Motorola, Lucent, VocalTec, Vienna Systems, Nuera Communications, and more; evaluate advantages of the IPv6 and IPv4 protocols; use RSVP, RTSP, IP Multicast, SONET, ATM, and other technologies for telephony; apply Codecs to voice digitization; emulate T1/E1 trunks; implement a system with appropriate standards; and anticipate trends and new products from innovative companies such as QWest.

Ip Telephony

Author: Olivier Hersent
Editor: John Wiley & Sons
ISBN: 0470023600
File Size: 31,44 MB
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IP (internet protocol) Telephony, enabled by softswitches, is going to usher in a new era in telecommunications. By putting voice and data over one IP network, operators can enjoy lower costs and create new, revenue-generating "multimedia" services. This valuable reference offers a comprehensive overview of the technology behind IP telephony and offers essential information to network engineers, designers and managers who need to understand the protocols and explore the issues involved in migrating the existing telephony infrastructure to an IP-based real time communication service. Drawing on extensive research and practical development experience in VoIP from its earliest stages, the authors give access to all the relevant standards and cutting-edge techniques in a single resource. IP Telephony: Deploying Voice-over-IP Protocols: Assumes a working knowledge of IP and networking and addresses the technical aspects of real-time communication over IP. Presents a high level overview of packet media transport technologies, covering all the major VoIP protocols – SIP, H323 and MGCP Details specific strategies to design services for public networks where endpoints cannot be trusted and can be behind firewalls. Explores the problems that may arise from incomplete protocol implementations, or architectures optimized for private networks which fail in a public environment. This amply illustrated, state-of-the art reference tool will be an invaluable resource for all those involved in the practical deployment of VoIP technology.

Voice Over Ip Networks

Author: Pramode K. Verma
Editor: Springer Science & Business Media
ISBN: 9783642143304
File Size: 23,44 MB
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This book addresses three important issues in VoIP networks: Quality of Service, pricing and security. In addressing Quality of Service (QoS), it introduces the notion of delay not exceeding an upper limit, termed the bounded delay, to measure the Quality of Service in VoIP networks. Queuing models are introduced to measure performance in terms of bounded delays. Closed form solutions relating the impact of bounding delays on throughput of VoIP traffic are provided. Traffic that exceeds the delay threshold is treated as lost throughput. The results addressed can be used in scaling resources in a VoIP network for different thresholds of acceptable delays. Both single and multiple switching points are addressed. The same notion and analysis are also applied on jitter, another important indicator of the VoIP QoS This book also develops a pricing model based on the Quality of Service provided in VoIP networks. It presents the impact of quality of VoIP service demanded by the customer on the transmission resources required by the network using an analytical approach. In addition, it extends and applies the delay throughput analysis developed for VoIP networks in assessing the impact of risks constituted by a number of transportation channels, where the risk associated with each channel can be quantified by a known distribution. Finally, the book explores areas for future research that can be built on the foundation of research presented.

Packet Guide To Voice Over Ip

Author: Bruce Hartpence
Editor: "O'Reilly Media, Inc."
ISBN: 1449339670
File Size: 74,99 MB
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Go under the hood of an operating Voice over IP network, and build your knowledge of the protocols and architectures used by this Internet telephony technology. With this concise guide, you’ll learn about services involved in VoIP and get a first-hand view of network data packets from the time the phones boot through calls and subsequent connection teardown. With packet captures available on the companion website, this book is ideal whether you’re an instructor, student, or professional looking to boost your skill set. Each chapter includes a set of review questions, as well as practical, hands-on lab exercises. Learn the requirements for deploying packetized voice and video Understand traditional telephony concepts, including local loop, tip and ring, and T carriers Explore the Session Initiation Protocol (SIP), VoIP’s primary signaling protocol Learn the operations and fields for VoIP’s standardized RTP and RTCP transport protocols Delve into voice and video codecs for converting analog data to digital format for transmission Get familiar with Communications Systems H.323, SIP’s widely used predecessor Examine the Skinny Client Control Protocol used in Cisco VoIP phones in networks around the world

Carrier Grade Voice Over Ip Third Edition

Author: Richard Swale
Editor: McGraw Hill Professional
ISBN: 0071827714
File Size: 20,74 MB
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Revision of: Carrier grade voice over IP / Daniel Collins. 2nd ed. A2003.

Understanding Voice Over Ip Security

Author: Alan B. Johnston
Editor: Artech House on Demand
ISBN:
File Size: 71,90 MB
Format: PDF, ePub
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VoIP (voice over IP) networks are currently being deployed by enterprises, governments, and service providers around the globe. Today, the hottest topic with engineers in the field is how to secure these networks. The book teaches practitioners how to design a highly secure VoIP network, explains Internet security basics, such as attack types and methods, and more.

Delivering Voice Over Ip Networks

Author: Daniel Minoli
Editor: John Wiley and Sons
ISBN: 0471386065
File Size: 58,38 MB
Format: PDF, Mobi
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Includes new coverage on the advances in signaling protocols, second–generation switching and the development of non–switched alternatives, and the implementation lessons learned. Contains in–depth coverage of network architectures used to support VoIP, performance and voice quality considerations, compression and integration methods for IP tranmissions.

Deploying Cisco Voice Over Ip Solutions

Author: Phil Bailey
Editor: Cisco Press
ISBN: 9781587050305
File Size: 63,13 MB
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Written by Cisco "RM" CCIEs "TM, " Technical Marketing Engineers, and Systems Engineers who have real-life experience with Cisco "RM" VoIP networks, this guide includes coverage of Virtual Private Networks (VPNs), admission control, security, fax and modem traffic, and unified messaging. Learn from real-world scenarios.

Deploying And Operating A Voice Over Ip Network

Author: Evan Zeng
Editor: Cisco Systems
ISBN: 9781587051708
File Size: 46,23 MB
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Optimize and design more effective voice / IP telephony networks with this definitive guide Benefit from author's vast experience in designing and building large VoIP networks Learn how to avoid deployment pitfalls through real-world examples and case studies Understand various VoIP feature sets and their benefits to optimize a service provider network Improve large-scale VoIP network design to better meet customers' voice application needs 63% of 500 large enterprise-scale corporations responded to a May 2005 indsutry survey conducted by Network World that they have already implemented Voice over IP (VoIP), or are planning to implement within 2 years. The primary driver for the rise in VoIP adoption are the cost-savings and business productivity gains VoIP provides. Deploying and Operating a Voice over IP Network offers real-world examples and case studies related to planning and designing a large-scale VoIP network for either enterprise network or service provider considerations. To design a high-quality VoIP network, network designers must have a thorough understanding of numerous IP and VoIP protocols and the complex features and roadmaps associated with Cisco products and solutions. This title details the functions of these protocols and features and outlines the benefits they can provide when deployed in the live network. The authors provide a comprehensive overview of existing VoIP protocols and solutions, such as H.323, SIP, and MGCP, and progresses to discussions on designing, optimizing, and troubleshooting a large-scale H.323 VoIP network in a service provider environment. Readers gain details on the various components of H.323 VoIP network design and management and benefit from extensive examples of VoIP network design and optimization according to Cisco best practices.

Voice Over Ip

Author: Uyless D. Black
Editor: Prentice Hall
ISBN:
File Size: 62,41 MB
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For courses in Telecommunications. This text provides comprehensive coverage of Voice Over IP or IP telephony that allows voice calls to be made within IP networks, as well as between an IP network and the PSTN (Public Switched Telephone Network).

Guide To Voice And Video Over Ip

Author: Lingfen Sun
Editor: Springer Science & Business Media
ISBN: 144714905X
File Size: 54,36 MB
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This book presents a review of the latest advances in speech and video compression, computer networking protocols, the assessment and monitoring of VoIP quality, and next generation network architectures for multimedia services. The book also concludes with three case studies, each presenting easy-to-follow step-by-step instructions together with challenging hands-on exercises. Features: provides illustrative worked examples and end-of-chapter problems; examines speech and video compression techniques, together with speech and video compression standards; describes the media transport protocols RTP and RTCP, as well as the VoIP signalling protocols SIP and SDP; discusses the concepts of VoIP quality of service and quality of experience; reviews next-generation networks based on the IP multimedia subsystem and mobile VoIP; presents case studies on building a VoIP system based on Asterisk, setting up a mobile VoIP system based on Open IMS and Android mobile, and analysing VoIP protocols and quality.

Practical Voip Security

Author: Thomas Porter, CISSP, CCNP, CCDA, CCS
Editor: Elsevier
ISBN: 9780080489551
File Size: 66,66 MB
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Voice Over IP (VoIP) phone lines now represent over 50% of all new phone line installations. Every one of these new VoIP phone lines and handsets must now be protected from malicious hackers because these devices now reside on the network and are accessible from the Internet just like any server or workstation. This book will cover a wide variety of the publicly available exploit tools and how they can be used specifically against VoIP (Voice over IP) Telephony systems. The book will cover the attack methodologies that are used against the SIP and H.323 protocols as well as VoIP network infrastructure. Significant emphasis will be placed on both attack and defense techniques. This book is designed to be very hands on and scenario intensive · More VoIP phone lines are being installed every day than traditional PBX phone lines · VoIP is vulnerable to the same range of attacks of any network device · VoIP phones can receive as many Spam voice mails as your e-mail can receive Spam e-mails, and as result must have the same types of anti-spam capabilities

Voice Over Ip Security

Author: Patrick Park
Editor: Pearson Education
ISBN: 1587058219
File Size: 31,33 MB
Format: PDF, Kindle
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Voice over IP Security Security best practices derived from deep analysis of the latest VoIP network threats Patrick Park VoIP security issues are becoming increasingly serious because voice networks and services cannot be protected from recent intelligent attacks and fraud by traditional systems such as firewalls and NAT alone. After analyzing threats and recent patterns of attacks and fraud, consideration needs to be given to the redesign of secure VoIP architectures with advanced protocols and intelligent products, such as Session Border Controller (SBC). Another type of security issue is how to implement lawful interception within complicated service architectures according to government requirements. Voice over IP Security focuses on the analysis of current and future threats, the evaluation of security products, the methodologies of protection, and best practices for architecture design and service deployment. This book not only covers technology concepts and issues, but also provides detailed design solutions featuring current products and protocols so that you can deploy a secure VoIP service in the real world with confidence. Voice over IP Security gives you everything you need to understand the latest security threats and design solutions to protect your VoIP network from fraud and security incidents. Patrick Park has been working on product design, network architecture design, testing, and consulting for more than 10 years. Currently Patrick works for Cisco® as a VoIP test engineer focusing on security and interoperability testing of rich media collaboration gateways. Before Patrick joined Cisco, he worked for Covad Communications as a VoIP security engineer focusing on the design and deployment of secure network architectures and lawful interception (CALEA). Patrick graduated from the Pusan National University in South Korea, where he majored in computer engineering. Understand the current and emerging threats to VoIP networks Learn about the security profiles of VoIP protocols, including SIP, H.323, and MGCP Evaluate well-known cryptographic algorithms such as DES, 3DES, AES, RAS, digital signature (DSA), and hash function (MD5, SHA, HMAC) Analyze and simulate threats with negative testing tools Secure VoIP services with SIP and other supplementary protocols Eliminate security issues on the VoIP network border by deploying an SBC Configure enterprise devices, including firewalls, Cisco Unified Communications Manager, Cisco Unified Communications Manager Express, IP phones, and multilayer switches to secure VoIP network traffic Implement lawful interception into VoIP service environments This IP communications book is part of the Cisco Press® Networking Technology Series. IP communications titles from Cisco Press help networking professionals understand voice and IP telephony technologies, plan and design converged networks, and implement network solutions for increased productivity. Category: Networking–IP Communication Covers: VoIP Security

Voice Over Ip Technologies

Author: Mark A. Miller
Editor: Wiley
ISBN: 9780764549076
File Size: 45,48 MB
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Voice over IP Technologies provides solid technical information on how to successfully design and implement a converged network, combining voice, data, fax and video transmissions into a cohesive networking infrastructure centered on the Internet Protocol. Converged networks, which combine voice, data, fax and video transmissions into a cohesive networking infrastructure -- all centered on the Internet Protocol, or IP -- promise a number of advantages over existing, separate networking environments. But to successfully design and implement a converged network requires expertise on both the voice and data networking sides of the house. Unfortunately, few individuals have these credentials -- either you are a voice networking expert, and familiar with circuit switching and connections between PBXs, or you are a data networking expert, familiar with packet switching and connections between routers and servers. The objective of this text is to bridge the gap between the voice and data networking sides, and provide the reader with the opportunity to fill in their areas of weakness with solid technical information. In addition, this text presents a number of case studies, from architectural, financial and technical perspectives that illustrate real-world applications for these technologies.

Network World

Author:
Editor:
ISBN:
File Size: 29,68 MB
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For more than 20 years, Network World has been the premier provider of information, intelligence and insight for network and IT executives responsible for the digital nervous systems of large organizations. Readers are responsible for designing, implementing and managing the voice, data and video systems their companies use to support everything from business critical applications to employee collaboration and electronic commerce.

Voice Over Ip Voip High Impact Strategies What You Need To Know

Author: Kevin Roebuck
Editor: Tebbo
ISBN: 9781743047231
File Size: 64,61 MB
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Voice over Internet Protocol (Voice over IP, VoIP) is one of a family of internet technologies, communication protocols, and transmission technologies for delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet. Other terms frequently encountered and often used synonymously with VoIP are IP telephony, Internet telephony, voice over broadband (VoBB), broadband telephony, and broadband phone. This book is your ultimate resource for VoIP. Here you will find the most up-to-date information, analysis, background and everything you need to know. In easy to read chapters, with extensive references and links to get you to know all there is to know about VoIP right away, covering: Voice over IP, 1legcall, Voice Funnel, Arbinet, Call-recording software, Generic Access Network, International gateway, Internet telephony service provider, Iobi, VoIP phone, IP-DECT, Media phone, Mobile VoIP, MoIP, One Source Networks, Peer-to-peer SIP, Purple minutes, SIP connection, SIP provider, Telephone VoIP Adapter, UMA Today, VoATM, Voice engine, Voice over WLAN, VoIP recording, VoIP VPN, Web-based VoIP, 8x8, Aastra Technologies, Aculab, Apex Internet, Apptix, AT&T CallVantage, AudioCodes, AVST, BabyTEL, Bandwidth.com, BlueFace, Bond Wireless, Brekeke PBX, Brekeke SIP Server, BroadVoice, Broadvox Communications, Callware, Clearwire, Com Hem, Comcast, Covad, Damovo, Deltathree, Dialogic Corporation, Dreamtilt, EarthLink, Eicon, Engin Limited, Eventis, FaktorTel, Fastweb (telecommunications company), Fibernetics Corporation, Free World Dialup, Freephoneline.ca, Freshtel, Gizmo5, GlobalRoam, Grasshopper (company), HipVoice, IConnectHere, Inphonex, Internode (ISP), IPdrum, Ipkall, Iristel, Jajah, Jaxtr, Lingo (VoIP Service operator), Mind CTI, Mitel, MKC Networks, Mobivox, Morodo, NEC Unified Solutions, NetTALK, NextGenTel, Nokia Siemens Networks, Nortel, Nuvio Corporation, Ooma, Orbitel, OVETEL, PhoneGnome, Primus Canada, Primus Telecom, Primus Telecommunications (Australia), Radvision, Rebtel, Rigatta, RingCentral, SIP Broker, Sipgate, Sipservice, Skype, Skype Limited, Snapvine, Snom, Speakeasy (ISP), Spikko, SPIRIT DSP, SunRocket, Super Technologies, T-Home Macedonia, TalkFree, Inc, TalkSwitch, Tdsoft, Telesphere, Telio, Time Warner Cable, TouchWave, Tpad, Troy Cablevision, UTStarcom, Veraz Networks, Vivox, Vocalocity, VocalTec, VoicePulse, Speedflow Communications, Voipfone, Vonage, Voxofon, Vyke, White Label Communications Ltd, ZON Multimedia, Zoom Telephonics, Zultys, Analog telephone adapter, Avaya Communication Server 2100, Avaya Communication Servers, Avaya IP Phone 1120, Avaya IP Phone 1140E, BT Fusion, Chatter bug, GXP 2000, LG-Nortel IP Phone 8540, Linksys iPhone, Linksys PAP2, MagicJack, SPA2102, SPA3102, Tk6000, Convergence Technologies Professional, SIP Forum, SIPfoundry, Voice over IP Security Alliance, Voice over the Net, Authenticated Identity Body, Call Admission Control, Distributed Universal Number Discovery, H.248, H.323, Hookflash, Inter-Asterisk eXchange, IpTTY, Jingle (protocol), List of SIP request methods, List of SIP response codes, Media Gateway Control Protocol, Media Gateway Control Protocol (Megaco), Media Gateway Control Protocol (MGCP), Message Session Relay Protocol, MiNET, Network Voice Protocol, Network-based Call Signaling, Open Phone Abstraction Library, Open Settlement Protocol, Real-time Transport Protocol, Registration, Admission and Status, RTP audio video profile, Session Initiation Protocol, Signaling Compression, Simple Gateway Control Protocol, SIP Trunking, Skinny Call Control Protocol, Skype protocol, T.37 ITU-T recommendation, T.38 ITU-T recommendation, UNIStim...and much more This book explains in-depth the real drivers and workings of VoIP. It reduces the risk of your technology, time and resources investment decisions by enabling you to compare your understanding of VoIP with the objectivity of experienced professionals.

Voice Over Ip Crash Course

Author: Steven Shepard
Editor: McGraw Hill Professional
ISBN: 0071589279
File Size: 46,85 MB
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Recent advances in VoIP (Voice over IP) technology have made it the solution of choice for voice service because of its low cost and increased reliability. Voice Over IP Crash Course offers practical technology coverage, while discussing the business, strategic and competitive implications of VoIP deployment in corporations. The book also covers the challenges faced by service providers as they evolve to an IP infrastructure while continuing to operate the PSTN. Coverage includes: IP and wireless, IP protocols vs. PSTN Interworking between SS7 and IP-based protocols Network components VoIP Products and manufacturing strategies

Voice Over Ipv6

Author: Daniel Minoli
Editor: Elsevier
ISBN: 9780080481654
File Size: 25,16 MB
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IPv6 (Internet Protocol version 6) is the future of Internet telephony. And this book is your guide to that future. IPv6 is the replacement for the currently used IPv4 (Internet Protocol version 4). IPv6 will offer increased IP addresses (full 128-bit addresses, compared to the 32-bit addresses of IPv4), enhanced security, and greater robustness. It will also be fully “backwards compatible with existing IPv4 systems. These capabilities will finally make Internet telephony a viable competitor to conventional switched telephone networks. In this book, Dan Minoli clearly explains IPv6 and how telephone networks can be built on its foundations. This is not just another IPv6 book; instead, it focuses on those aspects of IPv6 relevant to Internet telephony systems and voice networks. Minoli uses a compare/contrast approach, exploring where IPv6 is similar to IPv4 and where it differs, to let you quickly grasp the essence of IPv6 and the similarities (and differences) between current IPv4-based systems and IPv6-based systems. If you will be designing, implementing, or maintaining the next generation of Internet telephony systems, then you need the information in this book! *Explains the essential concepts of IPv6 and how they relate to Internet telephony *Describes how Internet telephony systems using IPv6 are different from, and better than, Internet telephony systems based on the older IPv4 standard *Discusses how to transition existing IPv4 Internet telephony systems and conventional switched systems to IPv6-based systems *Extensive treatment of security issues, including IP layer encryption and authentication methods *Explains connection techniques, including “plug and play approaches, for equipment used in IPv6 systems * The first title describing how the next generation Internet protocol—IPv6—can be used for Internet telephony * Explains IPv6 as it applies to Internet telephony (VoIP) * Shows how IPv6 gives better security, QoS, and signal integrity in Internet telephony

Network World

Author:
Editor:
ISBN:
File Size: 43,94 MB
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For more than 20 years, Network World has been the premier provider of information, intelligence and insight for network and IT executives responsible for the digital nervous systems of large organizations. Readers are responsible for designing, implementing and managing the voice, data and video systems their companies use to support everything from business critical applications to employee collaboration and electronic commerce.