Search Results: packet-guide-to-voice-over-ip-a-system-administrator-s-guide-to-voip-technologies

Packet Guide to Voice over IP

A system administrator's guide to VoIP technologies

Author: Bruce Hartpence

Publisher: "O'Reilly Media, Inc."

ISBN: 1449339638

Category:

Page: 242

View: 562

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

CCNA Voice Study Guide

Exam 640-460

Author: Andrew Froehlich

Publisher: John Wiley & Sons

ISBN: 0470631163

Category: Computers

Page: 600

View: 752

The ultimate guide to the new CCNA voice network administrator certification exam The new CCNA Voice exam tests candidates on their ability to implement a Cisco VoIP solution. Network administrators of voice systems will appreciate that the CCNA Voice Study Guide focuses completely on the information required by the exam. Along with hands-on labs and an objective map showing where each objective is covered, this guide includes a CD with the Sybex Test Engine, flashcards, and entire book in PDF format. The new CCNA Voice certification will be valuable for administrators of voice network systems using Cisco VoIP solutions From Sybex, the leading CCNA publisher, this guide offers in-depth coverage of every exam objective and the technology developed by Cisco for VoIP systems Covers the components of the Cisco Unified Communications Architecture as well as PSTN and VoIP components and technologies Shows how to configure gateways, voice ports, and dial peers Demonstrates how to configure a Cisco network to support VoIP and implement voicemail CD-ROM includes the Sybex Test Engine, flashcards, and entire book in PDF format CCNA Voice Study Guide will thoroughly prepare candidates for the new CCNA Voice certification. Note: CD-ROM/DVD and other supplementary materials are not included as part of eBook file.

CVOICE 8.0

Implementing Cisco Unified Communications Voice over IP and QoS v8.0 (Exam 642-437)

Author: Andrew Froehlich

Publisher: John Wiley & Sons

ISBN: 1118181417

Category: Computers

Page: 648

View: 9469

CompTIA A+ Complete Study Guide

Exams 220-801 and 220-802

Author: Quentin Docter,Emmett Dulaney,Toby Skandier

Publisher: John Wiley & Sons

ISBN: 1118421655

Category: Computers

Page: 1224

View: 3947

CompTIA Authorized, fully updated Study Guide for the leading IT certification: CompTIA A+ CompTIA A+ is the de facto certification for IT technicians. Some vendors even require employees to achieve certification as part of their job training. This book prepares you for both required exams: 220-801 and 220-802. Totally updated to cover the 2012 exams, this popular prep guide covers all the exam objectives. Readers will also have access to additional study tools, including the Sybex Test Engine with bonus practice exams, electronic flashcards, and a glossary of important terms in searchable PDF form. Includes a coupon for 10% Off CompTIA Certification Exams A complete study guide to both exams required for CompTIA A+ certification, the standard certification for software and hardware vendors and major technology companies Covers personal computer components, laptops and portable devices, operating systems (including mobile), printers and scanners, networks, security, safety and environmental issues, communication, and professionalism Provides clear and concise information on crucial hardware and operating system maintenance and troubleshooting topics Offers practical examples, real-world insights, exam highlights, and end-of-chapter reviews CompTIA A+ Complete Study Guide prepares the diligent student to pass both parts of the A+ exam with confidence.

Die 4-Stunden-Woche

Mehr Zeit, mehr Geld, mehr Leben

Author: Timothy Ferriss

Publisher: Ullstein eBooks

ISBN: 3843704457

Category: Business & Economics

Page: 352

View: 998

Warum arbeiten wir uns eigentlich zu Tode? Haben wir nichts Besseres zu tun? Und ob! - sagt Timothy Ferriss. Der junge Unternehmer war lange Workaholic mit 80-Stunden-Woche. Doch dann erfand er MBA - Management by Absence - und ist seitdem freier, reicher, glücklicher. Mit viel Humor, provokanten Denkanstößen und erprobten Tipps erklärt Ferriss, wie sich die 4-Stunden-Woche bei vollem Lohnausgleich verwirklichen lässt. Der Wegweiser für eine Flucht aus dem Hamsterrad und ein Manifest für eine neue Gewichtung zwischen Leben und Arbeiten.

TCP IP - Netzwerk-Administration

Author: Craig Hunt

Publisher: O'Reilly Verlag DE

ISBN: 9783897211797

Category: TCP/IP (Computer network protocol)

Page: 776

View: 3921

Guide to Networking for Physical Security Systems

Author: David J. Engebretson

Publisher: Delmar Pub

ISBN: 9781418073961

Category: Computers

Page: 275

View: 8048

Due to increased demand, it has become more important than ever for electronic technicians and security management professionals to have a thorough, grounded knowledge of the programming, installation, and functioning of IP-addressed electronic security devices. Technicians' Guide to Networking for Security Systems provides this information with a practical, straightforward approach. By first providing complete explanations of IP addressing, Ethernet and Wi-Fi, internet connections, and how networks operate; this book then delves into how these technologies can be used for electronic security device applications. With guided tours of common network devices such as DSL adapters, routers, IP security cameras, and detailed explanations of the various types of video compression; readers will gain a wealth of technical information that will prepare them for work in the electronic security industry.

How to Cheat at VoIP Security

Author: Thomas Porter, CISSP, CCNP, CCDA, CCS,Michael Gough

Publisher: Syngress

ISBN: 9780080553535

Category: Computers

Page: 432

View: 3640

The Perfect Reference for the Multitasked SysAdmin This is the perfect guide if VoIP engineering is not your specialty. It is the perfect introduction to VoIP security, covering exploit tools and how they can be used against VoIP (Voice over IP) systems. It gives the basics of attack methodologies used against the SIP and H.323 protocols as well as VoIP network infrastructure. * VoIP Isn’t Just Another Data Protocol IP telephony uses the Internet architecture, similar to any other data application. However, from a security administrator’s point of view, VoIP is different. Understand why. * What Functionality Is Gained, Degraded, or Enhanced on a VoIP Network? Find out the issues associated with quality of service, emergency 911 service, and the major benefits of VoIP. * The Security Considerations of Voice Messaging Learn about the types of security attacks you need to protect against within your voice messaging system. * Understand the VoIP Communication Architectures Understand what PSTN is and what it does as well as the H.323 protocol specification, and SIP Functions and features. * The Support Protocols of VoIP Environments Learn the services, features, and security implications of DNS, TFTP, HTTP, SNMP, DHCP, RSVP, SDP, and SKINNY. * Securing the Whole VoIP Infrastructure Learn about Denial-of-Service attacks, VoIP service disruption, call hijacking and interception, H.323-specific attacks, and SIP-specific attacks. * Authorized Access Begins with Authentication Learn the methods of verifying both the user identity and the device identity in order to secure a VoIP network. * Understand Skype Security Skype does not log a history like other VoIP solutions; understand the implications of conducting business over a Skype connection. * Get the Basics of a VoIP Security Policy Use a sample VoIP Security Policy to understand the components of a complete policy. Provides system administrators with hundreds of tips, tricks, and scripts to complete administration tasks more quickly and efficiently Short on theory, history, and technical data that ultimately is not helpful in performing their jobs Avoid the time drains associated with securing VoIP

CISSP All-in-One Exam Guide, Eighth Edition

Author: Shon Harris,Fernando Maymi

Publisher: McGraw Hill Professional

ISBN: 1260142647

Category: Computers

Page: 1376

View: 4248

A new edition of Shon Harris’ bestselling exam prep guide—fully updated for the new CISSP 2018 Common Body of Knowledge This effective self-study guide fully prepares you for the challenging CISSP exam and offers 100% coverage of all exam domains. This edition has been thoroughly revised to cover the new CISSP 2018 Common Body of Knowledge, hot spot and drag and drop question formats, and more. CISSP All-in-One Exam Guide, Eighth Edition features hands-on exercises as well as “Notes,” “Tips,” and “Cautions” that provide real-world insight and call out potentially harmful situations. Each chapter features learning objectives, exam tips, and practice questions with in-depth answer explanations. Beyond exam prep, the guide also serves as an ideal on-the-job reference for IT security professionals. •Fully updated to cover 2018 exam objectives and question formats•Digital content includes access to the Total Tester test engine with 1500 practice questions, and flashcards•Serves as an essential on-the-job-reference

CISSP All-in-One Exam Guide, 6th Edition

Author: Shon Harris

Publisher: McGraw Hill Professional

ISBN: 0071781749

Category: Computers

Page: 1456

View: 4934

A complete, up-to-date revision of the leading CISSP training resource from the #1 name in IT security certification and training, Shon Harris Fully revised for the latest release of the Certified Information Systems Security Professional exam, this comprehensive, up-to-date resource covers all 10 CISSP exam domains developed by the International Information Systems Security Certification Consortium (ISC2). This authoritative exam guide features learning objectives at the beginning of each chapter, exam tips, practice questions, and in-depth explanations. Written by the leading expert in IT security certification and training, CISSP All-in-One Exam Guide, Sixth Edition helps you pass the exam with ease and also serves as an essential on-the-job reference. Covers all 10 CISSP domains: Information security governance and risk management Access control Security architecture and design Physical and environmental security Telecommunications and network security Cryptography Business continuity and disaster recovery Legal, regulations, compliance, and investigations Software development security Security operations Electronic content includes: 1400+ practice exam questions in a Windows-based test engine with a new custom exam generation feature that allows you to practice by domain or take a complete CISSP practice exam Video training module from Shon Harris—single domain Adobe Digital Edition ebook—free download (subject to Adobe System Requirements)

A Guide to Help Desk Technology, Tools & Techniques

Author: Dione McBride

Publisher: Course Technology Ptr

ISBN: 9780760071519

Category: Computers

Page: 358

View: 2412

This book focuses on the technology, tools and techniques involved in running an effective help desk. A Guide to Help Desk Technology, Tools & Technology takes a look at the many software options available for tracking and managing the massive influx of data that come into a help desk daily.This title also details the types of tools specific to staff, management and customers alike.

PC Magazine

The Independent Guide to IBM-standard Personal Computing

Author: N.A

Publisher: N.A

ISBN: N.A

Category: IBM microcomputers

Page: N.A

View: 6607

Deploying Voice Over Wireless LANs

Author: James T. Geier,Jim Geier

Publisher: Cisco Systems

ISBN: 9781587052316

Category: Computers

Page: 248

View: 1503

Master the design, installation, management and troubleshooting of a voice network over a wireless LAN from industry leader Jim Geier.

The Road to IP Telephony

How Cisco Systems Migrated from PBX to IP Telephony

Author: Stephanie Carhee,Cisco Systems

Publisher: Cisco Press

ISBN: 9781587200885

Category: Computers

Page: 408

View: 8809

A complete IP Telephony migration planning guide Includes Steps to Success Poster It's everyone's "must have." This is a reference book for the entire project team who works on the deployment of an IP Telephony solution. Take advantage of best practices. Includes more than 200 best practices, lessons learned, and tips for getting you through your IP Telephony deployment successfully. Minimize risk and learn from the mistakes of others. Read the list of the top 10 things that can go wrong during an IP Telephony deployment. Ask the right questions. Get the project team thinking and collaborating together with Stephanie's "Checklist of Questions to Ask the Project Team." Use proven planning tools. Work from sample checklists, templates, project plans, and workflow documents to guide your planning process. Keep the Steps to Success on the minds of your project team. Use the enclosed poster, which illustrates every major step associated with an IP Telephony deployment. There is no better path to the successful implementation of a new technology than to follow in the experienced footsteps of an organization that has already been there. The Road to IP Telephony tells you how Cisco Systems successfully moved its own organization to a converged, enterprise-wide network. You will learn the implementation and operational processes, what worked, what didn't work, and how to develop your own successful methodology. After presenting this topic to hundreds of Cisco customers, including Fortune 500 companies, Stephanie Carhee consistently encountered the same question, "If I decide to move to IP Telephony, where do I begin and what can I do to ensure that I do it right the first time?" Although the needs of every enterprise are different, some things are universal; planning, communication, teamwork, and understanding your user's requirements are as important as technical expertise. The Road to IP Telephony shares with you everything you need to know about managing your deployment. It starts with where to begin, including what needs to be addressed before you even begin the planning process, to building your project team. Key best practices are also offered to help you set the project's pace and schedule, get your users on board, identify a migration strategy, develop a services and support strategy, and work toward the final PBX decommission. "Cisco IT wants to share its implementation experience with Cisco customers and partners to aide in the deployment practices of new Cisco technologies. While conducting our own company-wide cutover, we learned a great deal about what to do and what not to do. This book shares our experiences." -Brad Boston, Senior Vice President and Chief Information Officer, Cisco Systems, Inc. This volume is in the Network Business Series offered by Cisco Press. Books in this series provide IT executives, decision makers, and networking professionals with pertinent information on today's most important technologies and business strategies.

CASP CompTIA Advanced Security Practitioner Certification Study Guide (Exam CAS-001)

Author: Wm. Arthur Conklin,Gregory White,Dwayne Williams

Publisher: McGraw Hill Professional

ISBN: 0071776192

Category: Computers

Page: 704

View: 9105

The Best Fully Integrated Study System Available for Exam CAS-001 With hundreds of practice questions and lab exercises, CASP CompTIA Advanced Security Practitioner Certification Study Guide covers what you need to know—and shows you how to prepare—for this challenging exam. McGraw-Hill is a Gold-Level CompTIA Authorized Partner offering Authorized CompTIA Approved Quality Content. 100% complete coverage of all official objectives for the exam Exam Readiness Checklist—you’re ready for the exam when all objectives on the list are checked off Inside the Exam sections highlight key exam topics covered Two-Minute Drills for quick review at the end of every chapter Simulated exam questions match the format, tone, topics, and difficulty of the multiple-choice exam questions Covers all the exam topics, including: Cryptographic tools • Computing platforms • Enterprise storage • Infrastructure • Host security controls • Application security • Security assessments • Risk implications • Risk management strategy and controls • E-discovery, data breaches, and incident response • Security and privacy policies • Industry trends • Enterprise security • People and security • Change control • Security controls for communication and collaboration • Advanced authentication tools, techniques, and concepts • Security activities across the technology life cycle Electronic content includes: Complete MasterExam practice testing engine, featuring: -One practice exam -Detailed answers with explanations -Score Report performance assessment tool One-hour segment of LearnKey video training with free online registration: -Bonus downloadable MasterExam practice test

Network+ Guide to Networks

Author: Tamara Dean

Publisher: Cengage Learning

ISBN: 1423902459

Category: Computers

Page: 1024

View: 6861

Knowing how to install, configure, and troubleshoot a computer network is a highly marketable and exciting skill. This book first introduces the fundamental building blocks that form a modern network, such as protocols, topologies, hardware, and network operating systems. It then provides in-depth coverage of the most important concepts in contemporary networking, such as TCP/IP, Ethernet, wireless transmission, and security. After reading the book and completing the end-of-chapter exercises, you will be prepared to select the best network design, hardware, and software for your environment. You will also have the skills to build a network from scratch and maintain, upgrade, and troubleshoot an existing network. Finally, you will be well prepared to pass CompTIA's (the Computing Technology Industry Association's) Network+ certification exam. This book explains concepts logically and in a clear, approachable style. In addition, concepts are reinforced by real-world examples of networking issues from a professional's standpoint. Each chapter opens with an On the Job story from a network engineer. These real-world examples, along with Hands-on Projects and Case Projects in each chapter, make this book a practical learning tool. The numerous tables and illustrations, along with the glossaries, appendices, and study questions make the book a valuable reference for any networking professional Important Notice: Media content referenced within the product description or the product text may not be available in the ebook version.

CompTIA A+ Certification All-in-One Exam Guide, 8th Edition (Exams 220-801 & 220-802)

Author: Michael Meyers

Publisher: McGraw Hill Professional

ISBN: 007179512X

Category: Computers

Page: 1200

View: 9408

The bestselling CompTIA A+ reference and test preparation guide--fully revised for the new 2012 exam topics Written by the leading authority on CompTIA A+ certification and training, the new edition of this trusted resource offers complete, up-to-date coverage of CompTIA A+ exams 220-801 and 220-802. You’ll find learning objectives at the beginning of each chapter, exam tips, practice exam questions, and in-depth explanations. Prepare for the exams with confidence! McGraw-Hill is a Gold-Level CompTIA Authorized Partner offering Authorized CompTIA Approved Quality Content to give you the competitive edge on exam day. This comprehensive guide also serves as an essential on-the-job reference after certification. Covers all exam objectives, including how to: Work with CPUs, RAM, BIOS settings, motherboards, power supplies, and other PC components Install, configure, and troubleshoot hard drives Manage input devices and removable media Install, upgrade, and troubleshoot Windows XP, Windows Vista, and Windows 7 Troubleshoot all common PC problems Install video and multimedia cards Work with smartphones, tablets, and other mobile devices Install and configure wired and wireless networks Connect to the Internet Protect your PC and your network Install, configure, and manage printers Work with virtualization technologies Understand safety and environmental issues Electronic content includes: Practice exams for 801 & 802 with hundreds of questions More than one hour of free video training from Mike Meyers A collection of Mike’s latest favorite shareware and freeware PC tools and utilities Adobe Digital Edition eBook—free download (subject to Adobe's system requirements)

Information Technology for Management

Transforming Organizations in the Digital Economy

Author: Efraim Turban,Dorothy Leidner,Ephraim McLean,James Wetherbe

Publisher: Wiley

ISBN: 9780471787129

Category: Computers

Page: 720

View: 2267

Thoroughly Updated Sixth Edition! Social networks are transforming how people communicate, work, and play. This comprehensive new edition highlights this new technology and scores of others that are changing how organizations operate and compete in the current global environment. The cover depicts two examples of social network. The larger image is a visualization of the trust relationships in a web-based social network. The smaller figures are default avatars from Second Life, a multi-layered, 3D virtual world that is imagined, created, and owned by its residents. See chapter 4 for more information on social networks. For more information on Second Life, visit second life.com or see Second Life: the Official Guide by Rymaszewski et al. at www. sybex.com/go/secondlife For more information on the trust network, visit trust.mindswap.org

Configuring Cisco AVVID

Author: Wayne Lawson

Publisher: Elsevier

ISBN: 9780080476735

Category: Computers

Page: 608

View: 2150

What is AVVID? Previously called Configuring Cisco Communications Networks (CCN), Architecture for Voice, Video, and Integrated Data (AVVID) is the latest development from Cisco Systems that will soon redefine the way businesses communicate. AVVID allows businesses to transmit voice, data, and video over one combined architecture, whereas in the past, three separate systems were required. Configuring Cisco AVVID will be the first book to discuss the components of the AVVID architecture and will be timed to release with the launch of the technology in early 2000. A practical guide to the AVVID technology this book will include an introduction to AVVID, and its software, hardware, network architecture, installation, operation and configuration. Topics include CallManager, Cisco Gateways, and IPCC (Cisco IP Contact Center). * The first book to discuss the components of this important new technology * Practical guide; many engineers will find this a great source of AVVID product knowledge * Cisco is planning to launch AVVID hardware and software in Spring 2000 - demand is already high for information * Book will be timed to release with technology

Hacken für Dummies

Author: Kevin Beaver

Publisher: John Wiley & Sons

ISBN: 3527805001

Category: Computers

Page: 370

View: 3708

Fürchten Sie um Ihre Unternehmensdaten? Machen Sie sich Sorgen um Ihre IT-Systeme, wenn Sie wieder einmal lesen, dass unbekannte Hacker ein Unternehmen für Wochen lahmgelegt haben? Warten Sie nicht ab, bis es auch in Ihren Systemen passiert, sondern tun Sie etwas! Dabei hilft Ihnen dieses Buch. Versetzen Sie sich als erstes in die Rolle des Schurken und lernen Sie zu denken wie ein Krimineller! Wo sind die Hürden am niedrigsten? Welche grundlegenden Hackertechniken gibt es? Kevin Beaver zeigt Ihnen, wo Ihre Systeme verwundbar sein könnten, sodass Sie im Rennen um die IT-Sicherheit die Nase vorn behalten.

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