IP Telephony Demystified PDF Download
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Author: Ken Camp
Publisher: McGraw Hill Professional
ISBN: 9780071406703
Category : Computers
Languages : en
Pages : 278
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Book Description
This handbook is designed to demystify IP telephony for business people and technology generalists. It discusses: IP protocol breakdown -SIP, H.323, Megaco/H.248; quality of service - IntServ, DiffServ, and MPLS; integrating voice into a LAN data environment; and cost and service implications.
Author: Ken Camp
Publisher: McGraw Hill Professional
ISBN: 9780071406703
Category : Computers
Languages : en
Pages : 278
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Book Description
This handbook is designed to demystify IP telephony for business people and technology generalists. It discusses: IP protocol breakdown -SIP, H.323, Megaco/H.248; quality of service - IntServ, DiffServ, and MPLS; integrating voice into a LAN data environment; and cost and service implications.
Author: Michael Thomas Bayer
Publisher:
ISBN: 9780071363280
Category : Internet telephony
Languages : en
Pages : 0
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Book Description
Accompanying CD-ROM has resource documents in PDF format, including the complete set of ECTF specifications, and live links to updates and related web sites.
Author: Michael Thomas Bayer
Publisher: McGraw-Hill Companies
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 612
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Book Description
Accompanying CD-ROM has resource documents in PDF format, including the complete set of ECTF specifications, and live links to updates and related web sites.
Author: Gonzalo Camarillo
Publisher: McGraw Hill Professional
ISBN: 0071414622
Category : Technology & Engineering
Languages : en
Pages : 285
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Book Description
State-of-the-art SIP primer SIP (Session Initiation Protocol) is the open standard that will make IP telephony an irresistible force in communications, doing for converged services what http does for the Web. SIP Demystified – authored by Gonzalo Camarillo, one of the contributors to SIP development in the IETF—gives you the tools to keep your company and career competitive. This guide tells you why the standard is needed, what architectures it supports, and how it interacts with other protocols. As a bonus, you even get a context-setting background in data networking. Perfect if you’re moving from switched voice into a data networking environment, here’s everything you need to understand: * Where, why, and how SIP is used * What SIP can do and deliver * SIP’s fit with other standards and systems * How to plan implementations of SIP-enabled services * How to size up and choose from available SIP products
Author: Akhil Behl
Publisher: Cisco Press
ISBN: 0132731061
Category : Computers
Languages : en
Pages : 1154
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Book Description
The real-world guide to securing Cisco-based IP telephony applications, devices, and networks Cisco IP telephony leverages converged networks to dramatically reduce TCO and improve ROI. However, its critical importance to business communications and deep integration with enterprise IP networks make it susceptible to attacks that legacy telecom systems did not face. Now, there’s a comprehensive guide to securing the IP telephony components that ride atop data network infrastructures–and thereby providing IP telephony services that are safer, more resilient, more stable, and more scalable. Securing Cisco IP Telephony Networks provides comprehensive, up-to-date details for securing Cisco IP telephony equipment, underlying infrastructure, and telephony applications. Drawing on ten years of experience, senior network consultant Akhil Behl offers a complete security framework for use in any Cisco IP telephony environment. You’ll find best practices and detailed configuration examples for securing Cisco Unified Communications Manager (CUCM), Cisco Unity/Unity Connection, Cisco Unified Presence, Cisco Voice Gateways, Cisco IP Telephony Endpoints, and many other Cisco IP Telephony applications. The book showcases easy-to-follow Cisco IP Telephony applications and network security-centric examples in every chapter. This guide is invaluable to every technical professional and IT decision-maker concerned with securing Cisco IP telephony networks, including network engineers, administrators, architects, managers, security analysts, IT directors, and consultants. Recognize vulnerabilities caused by IP network integration, as well as VoIP’s unique security requirements Discover how hackers target IP telephony networks and proactively protect against each facet of their attacks Implement a flexible, proven methodology for end-to-end Cisco IP Telephony security Use a layered (defense-in-depth) approach that builds on underlying network security design Secure CUCM, Cisco Unity/Unity Connection, CUPS, CUCM Express, and Cisco Unity Express platforms against internal and external threats Establish physical security, Layer 2 and Layer 3 security, and Cisco ASA-based perimeter security Complete coverage of Cisco IP Telephony encryption and authentication fundamentals Configure Cisco IOS Voice Gateways to help prevent toll fraud and deter attacks Secure Cisco Voice Gatekeepers and Cisco Unified Border Element (CUBE) against rogue endpoints and other attack vectors Secure Cisco IP telephony endpoints–Cisco Unified IP Phones (wired, wireless, and soft phone) from malicious insiders and external threats 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.
Author: Walter Goralski
Publisher: McGraw-Hill Companies
ISBN:
Category : Computers
Languages : en
Pages : 500
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Book Description
Annotation Demystifying the operation of Intenet telephone protocols and technologies, IP Telephony, by Walter Goralski and Matthew Kolon, establishes a solid framework for Internet-powered voice communications. This quick-study reference explains the world of central office switches and signaling protocols, exploring every phase of telephony from billing to caller ID to voice routing protocols. Conversely, it explores the existing structure of the Internet and the IP protocol stack to explain the world of routers and connectionless IP. You'll find a bonanza of examples that demonstrate how organizations; local, national and global can employ Internet telephony both to save money and to provide services ranging from Internet faxing to solving a multitude of business problems. This plain-English guide lets you.*See how to make your existing data network do double duty as your phone system*Explore voice-enabled Web sites for everything from Internet telemarketing to customer support*Understand the implementation standards, SS7, H.323, RSVP, the ITU G.x series, and more*Recognize the role of Internet telephone gateways*Understand the relationship between quality of service (QOS), frame relay, and ATM network as voice vehicles*And much more.
Author: Michael Thomas Bayer
Publisher: McGraw Hill Professional
ISBN: 9780071359870
Category : Computers
Languages : en
Pages : 820
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Book Description
Accompanying CD-ROM has resource documents in PDF format, including the complete set of ECTF specifications, and live links to updates and related web sites.
Author: Walter Goralski
Publisher: McGraw-Hill
ISBN: 9780072130829
Category : Computers
Languages : en
Pages : 496
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Book Description
Author: Olivier Hersent
Publisher: John Wiley & Sons
ISBN: 0470023600
Category : Technology & Engineering
Languages : en
Pages : 419
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Book Description
IP (internet protocol) Telephony, enabled by softswitches, isgoing to usher in a new era in telecommunications. By putting voiceand data over one IP network, operators can enjoy lower costs andcreate new, revenue-generating "multimedia" services. This valuable reference offers a comprehensive overview of thetechnology behind IP telephony and offers essential information tonetwork engineers, designers and managers who need to understandthe protocols and explore the issues involved in migrating theexisting telephony infrastructure to an IP-based real timecommunication service. Drawing on extensive research and practical developmentexperience in VoIP from its earliest stages, the authors giveaccess to all the relevant standards and cutting-edge techniques ina single resource. IP Telephony: Deploying Voice-over-IP Protocols: Assumes a working knowledge of IP and networking and addressesthe technical aspects of real-time communication over IP. Presents a high level overview of packet media transporttechnologies, covering all the major VoIP protocols – SIP,H323 and MGCP Details specific strategies to design services for publicnetworks where endpoints cannot be trusted and can be behindfirewalls. Explores the problems that may arise from incomplete protocolimplementations, or architectures optimized for private networkswhich fail in a public environment. This amply illustrated, state-of-the art reference tool will bean invaluable resource for all those involved in the practicaldeployment of VoIP technology.
Author: Lawrence Harte
Publisher: Althos Incorporated
ISBN: 9781932813791
Category : Computers
Languages : en
Pages : 104
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Book Description
This book explains why people and companies are converting some or all of their existing (legacy) telephone systems from dedicated telephone systems (such as proprietary PBX) to more standard IP telephony systems. These conversions allow for telephone bill cost reduction, increased ability to control telephone services, and the addition of new telephone information services. Through the use of IP telephony service, companies can immediately reduce their telecommunication costs 40% to 70%. This book provides an overview of the different types of IP Telephony systems including IP PBX, IP Centrex and Internet Telephone systems. You will learn the key functional parts of voice over IP systems and how voice over Internet protocol (VoIP) systems work. Explained are the processes used to setup and control IP telephony service. The common IP Telephony protocols including session initiation protocol (SIP), Media Gateway Control Protocol (MGCP) and H.323 are described as well. You will learn how to connect telephones through data networks using adapters or by using telephones that plug directly into data networks (IP telephones). Discover what equipment and service choices you have and how they can affect your costs and service quality. Find out how packet losses and packet delays creates distortion and operational challenges and ways to reduce or eliminate these effects. Advanced telephone features that are only possible through IP Telephony are described along with how customers can setup and configure their equipment through the use of self provisioning web portals. Learn about the different types of services, their typical costs and some of the hidden costs of IP Telephony and ways to reduce or avoid them. Some of the most important topics featured are: .The different types of IP Telephony systems .Functional parts of VoIP systems .The processes used to setup and control IP telephony service .How to connect standard telephones through data networks .What choices you have and how they can effect your service quality .Advanced telephone features that are only possible through IP Telephony .The different types of services and their typical costs .Some of the hidden costs of IP Telephony
