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.

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

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.

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.

No need to be intimidated by home networking! With a very readable and easy to understand writing style, this book takes the anxiety out of learning how to build or expand a home network Read a home networking book organised like a fun and painless self-teaching guide. Use the 8 page, 2-colour visual instruction insert to see how to set up a home network. Take end of chapter quizzes to check your progress, as well as a final exam found at the end of the book.

"This book is like a good tour guide.It doesn't just describe the major attractions; you share in the history, spirit, language, and culture of the place." --Henning Schulzrinne, Professor, Columbia University Since its birth in 1996, Session Initiation Protocol (SIP) has grown up. As a richer, much more robust technology, SIP today is fully capable of supporting the communication systems that power our twenty-first century work and life. This second edition handbook has been revamped to cover the newest standards, services, and products. You'll find the latest on SIP usage beyond VoIP, including Presence, instant messaging (IM), mobility, and emergency services, as well as peer-to-peer SIP applications, quality-of-service, and security issues--everything you need to build and deploy today's SIP services. This book will help you * Work with SIP in Presence and event-based communications * Handle SIP-based application-level mobility issues * Develop applications to facilitate communications access for users with disabilities * Set up Internet-based emergency services * Explore how peer-to-peer SIP systems may change VoIP * Understand the critical importance of Internet transparency * Identify relevant standards and specifications * Handle potential quality-of-service and security problems

A Game Changer for WFH Practitioners Ê KEY FEATURESÊÊ _ Get to know the challenges and benefits of VoIP. _ Explore in-depth coverage on methodologies of the VoIP system. _ Includes the VoIP economic model, technology model, and in-practices. DESCRIPTIONÊ ÔVoIP Telephony and YouÕ introduces you to new and advanced ways of communicating over traditional telephony realms. Telcos use public internet private IPs for this long-distance voice communication in the Covid era. This book describes how VoIP encompasses the capability to encode and deliver content in real-time across digitized networks. In this book, you will learn about VoIP regulations, VoIP hardware and software, video conferencing servers, SWOT analysis of Telcos, switching technology. You will also learn about the TCP/IP, market, Economics model, business model, and technology models. You will learn how to eliminate echo by understanding the various interfaces of VoIP and a number of digital protocols.This book will also provide you with a solution to design and maintain communication systems that can be used reliably in the Covid-19 times. This book includes several best practices and security measures to secure conversations by use of surveillance methods and VoIP security provisions.ÊÊ WHAT YOU WILL LEARN _ Learn to establish a strong and robust digital communication for WFH business operations. _ Explore and evaluate buyingÊ decisions between cloud-based phones and other VoIP devices. _ Learn to optimize utilization of the VoIP telephony devices for audio and video conferencing. WHO THIS BOOK IS FORÊÊ This book is for aspiring and current technicians, network administrators, engineers, IT managers, VoIP integrators and solution providers, mobile experts, and WFH practitioners. TABLE OF CONTENTS 1. Introduction to Voice over Internet Protocol (VoIP) 2. VoIP Video Conferencing and Corona Virus 3. VoIPÕs Challenges and Benefits and VoIP MarketÕs Independent Providers 4. Overview of Systems-Level 5. Interfaces of VoIP Telephony 6. Assurance of Voice Quality for VoIP Networks 7. Implementation of VoIP Security 8. Functionality of a Data Router 9. Technical Description related to VoIP 10. VoIP Hardware and Software Components 11. Business Model and Market Model in relation with Internet Telephony 12. Technology, Economics and In-Practice to be concerned with IP telephony 13. VoIP to be Concluded