• Expert answers to your voice certification questions

    This guide gives expert advice on how to pursue voice certifications that complement your career and help you learn about your company's equipment.

  • VoIP: Glossary

    This handy glossary will assist you with terminology related specifically to voice over IP.

  • data transfer rate (DTR)

    The data transfer rate (DTR) is the amount of digital data that is moved from one place to another in a given time. (Continued...)

  • analog telephone adapter (ATA)

    An analog telephone adaptor (ATA) is a device used to connect a standard telephone to a computer or network so that the user can make calls over the Internet.

Unified Communications Resources

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  • Expert answers to your voice certification questions

    This guide gives expert advice on how to pursue voice certifications that complement your career and help you learn about your company's equipment.  FAQ

  • VoIP: SIP, security and testing for your network

    Ensuring that your business is getting the most from VoIP can sometimes require a back-to-basics approach. In this series, each guide is focused on the fundamentals of a specific task that makes VoIP work for you -- not the other way around.  Crash Course

  • IPTV Crash Course: Chapter 3: The Technology of IP Networks

    Chapter 3 of "IPTV Crash Course" by Joseph Weber and Tom Newberry presents an overview of IP suite data transmission basics and advanced protocols that IPTV utilizes in creating a television service supported by the Internet.  Chapter Download

  • Securing VoIP Networks Chapter 7: Key Management Mechanisms

    Key management is a fundamental part of protecting Internet multimedia applications like VoIP, but the protocols can be difficult to design. Securing VoIP Networks explains the current and emerging key management security, amid detailed charts to gui...  Chapter Download

  • Cisco IP Communications Express: CallManager Express with Cisco Unity Express

    In this chapter, you'll read about some of the more popular Cisco CME phone and call processing features. You will see examples of how these features can be configured and combined to provide a rich and flexible set of functions. You will also see ho...  Chapter Download

  • VoIP models and services: Complete guide

    With clear, concise explanations of existing VoIP business models and deployment methodologies, this guide will enable you to weigh the pros and cons of each based on your needs.  Learning Guide

  • How to Cheat at VoIP Security

    Converging voice and data on the same wire, regardless of the protocols used, ups the ante for network security engineers and managers. One consequence of this convergence is that in the event of a major network attack, the organization's entire tele...  Chapter Download

  • VoIP on MPLS

    While MPLS technology has been around for several years, businesses are now taking advantage of service provider offerings and beginning their own corporate implementations. It's a good idea for network architects and engineers to get a head start on...  Guide

  • Building a VoIP Network with Nortel's Multimedia Communication Server 5100

    "SIP Architecture" explains how SIP revolutionized the Internet communication industry, and helps you to understand the functions and features of the system.  Chapter Download

  • Communications from beyond

    Test your knowledge of VoIP and other communication technologies with our spooky quiz.  Quiz

  • See more Essential Knowledge on Unified Communications Resources

  • Best practices for instant messaging security

    When properly implemented, instant messaging can be a valuable communication tool within an organization. However, without properly administered security, IM platforms can attract malware and other security breaches. In this tip, Brien Posey details ...  Tip

  • Enterprise collaboration tools from consumer market

    Consumer-based collaboration tools are finding their way into the enterprise. IT departments can fight the trend, give up and ignore it, or embrace it.  Tip

  • Unified communications security vulnerabilities

    There is no easy way to secure your unified messaging systems, but arming yourself with the right information and resources will get you on track to secure UC apps.  Tip

  • Three tips for UC deployment

    Three tips to building a unified communications (UC) strategy from Burton Group senior analyst Mark Cortner and Zeus Kerravala, senior vice president with Yankee Group.  Tip

  • Securing the enterprise VoIP perimeter

    Traditional perimeter security methods such as firewalls and IPS can interfere with VoIP call operation and performance, which can cause many organizations to bypass or break through firewalls to make VoIP work or to decide that VoIP is too problemat...  Tip

  • Manipulating VoIP security

    There are those who want to attack your VoIP calls via packet flooding and signaling manipulation tools. This tip provides an extensive list of sites that track and document attack tools. Check these sites often!  Tip

  • How to think about VoIP security

    Voice over IP (VoIP) brings converged networks security challenges that never existed for the data network or traditional telephony. In the first tip of his VoIP security series, industry expert Gary Audin provides an overview of these IP telephony t...  Tip

  • VoIP certification credentials

    VoIP certifications are discussed in this tip. Find out which credentials primarily focus on VoIP and those for which it is secondary. For each certification, we include a brief description of the credential and a link for more information.  Tip

  • MPLS -- what voice managers need to know

    Multiprotocol Label Switching (MPLS) is a rapidly growing connectivity choice for enterprises using VoIP. In this tip, voice managers learn what they need to know about MPLS.  Tip

  • Why you need to learn VoIP for your Cisco certification

    Because of the increasing importance of VoIP and Cisco's growing emphasis on it, the networking giant has increased the significance of VoIP in its certification exams. In this tip, David Davis looks at the VoIP focus in popular Cisco certifications,...  Tip

  • See more Tips on Unified Communications Resources

  • VoIP: Glossary

    This handy glossary will assist you with terminology related specifically to voice over IP.  Definition

  • data transfer rate (DTR)

    The data transfer rate (DTR) is the amount of digital data that is moved from one place to another in a given time. (Continued...)  Definition

  • analog telephone adapter (ATA)

    An analog telephone adaptor (ATA) is a device used to connect a standard telephone to a computer or network so that the user can make calls over the Internet.  Definition

  • IP telephony (Internet Protocol telephony)

    IP telephony (Internet Protocol telephony) is a general term for the technologies that use the Internet Protocol's packet-switched connections to exchange voice, fax, and other forms of information that have traditionally been carried over the dedica...  Definition

  • Wi-Fi cell phone (cellular-Internet phone or cell-Internet phone)

    A Wi-Fi cell phone (also called a cellular-Internet phone or cell-Internet phone) is a wireless telephone set that can automatically switch between conventional cellular and Wi-Fi VoIP modes, even during the course of a conversation... (Continued)  Definition

  • unified communications

    Unified communications is an industry term used to describe all forms of call and multimedia/cross-media message-management functions controlled by an individual user for both business and social purposes. This includes any enterprise informational o...  Definition

  • Skype

    Skype is an Internet telephony service provider that offers free calling between computers and low-cost calling to regular telephones that aren't connected to the Internet. (Continued...)  Definition

  • G.722

    G.722 is a standard for high-quality digital voice communications that is expected to lead to increased use in Voice over Internet Protocol (VoIP)... (Continued)  Definition

  • voice-to-text

    Voice-to-text is a type of speech recognition program that converts spoken to written language... (Continued)  Definition

  • G.729

    G.729 is a standard for Internet Protocol (IP) private branch exchange (PBX) vendors, as well as for the public switched telephone network (PSTN)... (Continued)  Definition

  • See more Definitions on Unified Communications Resources

  • Expert answers to your voice certification questions

    This guide gives expert advice on how to pursue voice certifications that complement your career and help you learn about your company's equipment.  FAQ

  • VoIP: Glossary

    This handy glossary will assist you with terminology related specifically to voice over IP.  Definition

  • data transfer rate (DTR)

    The data transfer rate (DTR) is the amount of digital data that is moved from one place to another in a given time. (Continued...)  Definition

  • analog telephone adapter (ATA)

    An analog telephone adaptor (ATA) is a device used to connect a standard telephone to a computer or network so that the user can make calls over the Internet.  Definition

  • IP telephony (Internet Protocol telephony)

    IP telephony (Internet Protocol telephony) is a general term for the technologies that use the Internet Protocol's packet-switched connections to exchange voice, fax, and other forms of information that have traditionally been carried over the dedica...  Definition

  • Wi-Fi cell phone (cellular-Internet phone or cell-Internet phone)

    A Wi-Fi cell phone (also called a cellular-Internet phone or cell-Internet phone) is a wireless telephone set that can automatically switch between conventional cellular and Wi-Fi VoIP modes, even during the course of a conversation... (Continued)  Definition

  • Multipoint HD video conferencing bridges: Capacity vs. quality

    Is there a tradeoff between capacity and quality with HD video conferencing bridges? Some vendors say yes, but IT pros must take a broader perspective on multipoint video conferencing.  Article

  • unified communications

    Unified communications is an industry term used to describe all forms of call and multimedia/cross-media message-management functions controlled by an individual user for both business and social purposes. This includes any enterprise informational o...  Definition

  • Skype

    Skype is an Internet telephony service provider that offers free calling between computers and low-cost calling to regular telephones that aren't connected to the Internet. (Continued...)  Definition

  • G.722

    G.722 is a standard for high-quality digital voice communications that is expected to lead to increased use in Voice over Internet Protocol (VoIP)... (Continued)  Definition

  • See more All on Unified Communications Resources
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