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ALSO CALLED: Digital Signal Level 1, DS0, Digital Signal Level Hierarchy, DS1, Digital Signal Level 4, DS3, DS2, DS4, DS Level Hierarchy, Digital Signal Level 3, Digital Signal Level 2, Digital Signal Level 0
DEFINITION: To see the relationship between T-carrier, E-carrier, and DS0 multiples, see digital signal X. The T-carrier system, introduced by the Bell System in the U.S. in the 1960s, was the first successful system that supported digitized voice transmission. The original transmission rate (1.544 Mbps) in the T1 line is in common use today in Internet service provider (ISP) connections to the Internet. Another  … 
Definition continues below.
T-Carrier SystemsWhite Papers (View All Report Types)
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4 Steps to Meet Growing IT Demands
sponsored by Rackspace
WHITE PAPER: In this informative resource, gain critical insights into a new "service broker" model of IT operations that can provide end users with faster service, enable IT teams to undertake more strategic projects, and allow management to see more clearly IT's business contributions.
Posted: 03 Sep 2014 | Published: 03 Sep 2014

Rackspace

4 Steps to Understanding the Possibilities of Video for Your Organization
sponsored by Cisco Systems, Inc.
WHITE PAPER: Read this whitepaper to learn more about the benefits that telepresence and videoconferencing can offer each department within your organization, as well as to receive tips on how to choose the right equipment, vendor, and deployment model for your company's needs.
Posted: 08 Jul 2014 | Published: 08 Jul 2014

Cisco Systems, Inc.

5 Ways to Satisfy Both Business and User Demands for IT Service
sponsored by CA Technologies.
WHITE PAPER: This whitepaper details five steps you must take in order to provide the IT service your end-users want at the cost your business demands.
Posted: 25 Jun 2014 | Published: 25 Jun 2014

CA Technologies.

8 Simple Steps to Bring Shadow IT into the Light
sponsored by Rackspace
WHITE PAPER: This in-depth white paper outlines the 8 essential steps for IT professionals to drag Shadow IT into the light and regain control of their organization.
Posted: 02 Sep 2014 | Published: 02 Sep 2014

Rackspace

A Total-Cost-of-Ownership Comparison for Unified Communications and Collaboration
sponsored by Cisco
WHITE PAPER: This guide compares the total-cost-of-ownership of various unified communications and collaboration platforms and explains how collaboration is critical to the success of the modern business.
Posted: 14 Apr 2014 | Published: 30 Sep 2013

Cisco

Assess IT as a service : Enterprise Cloud Services–Virtual Private Cloud, Proof of Concept
sponsored by Hewlett-Packard Limited
WHITE PAPER: Read this white paper to learn how you can test out enterprise cloud services – specifically the virtual private cloud – and see how it performs in conjunction with your current systems.
Posted: 16 Aug 2012 | Published: 16 Aug 2012

Hewlett-Packard Limited

Avaya Aura Communication Manager COR/FRL/AAR Simplified
sponsored by Global Knowledge
WHITE PAPER: This white paper provides a useful list of Avaya Site Administration commands that will allow you to control what kind of calls employees are authorized to make and ensure least cost routing of outbound calls to keep phone bills down.
Posted: 21 Mar 2014 | Published: 21 Mar 2014

Global Knowledge

Avaya Aura Communication Manager Survivability Simplified
sponsored by Global Knowledge
WHITE PAPER: The Avaya Aura product line offers many opportunities for communications to survive failures of the IP network or the Avaya equipment. Here, we will focus on the Communication Manager Survivability explanation, implementation, verification, "good to know facts," and troubleshooting commands.
Posted: 25 Jul 2013 | Published: 25 Jun 2013

Global Knowledge

Back to the Future: The Hybrid Organisation: People
sponsored by ComputerWeekly.com
WHITE PAPER: This ‘thought paper’ draws a parallel between young people in the 1960s and 1970s, the group that became known as the baby boomer generation and young people of today, often termed Generation Y or Digital Natives.
Posted: 24 Oct 2011 | Published: 15 Jun 2010

ComputerWeekly.com

10 UC and Collaboration Tips to Empower your Strategy
sponsored by Insight
WHITE PAPER: This exclusive resource discusses how you can best utilize Unified Communication and Collaboration (UC&C) technologies to increase productivity and business value.
Posted: 12 Nov 2013 | Published: 12 Nov 2013

Insight

5 Ways to Optimize Your Workforce for Customer Contact in a Social Marketplace
sponsored by Aspect
WHITE PAPER: This white paper discusses how workforce, quality and performance management capabilities provide practical business processes and tools for effective staffing, monitoring, reporting, evaluation and coaching.
Posted: 29 Aug 2013 | Published: 29 Aug 2013

Aspect

7 Secrets of Successful Small Business Communications
sponsored by RingCentral
WHITE PAPER: This white paper reveals 7 critical tips to help SMBs maximize their use of business phone systems.
Posted: 17 Feb 2014 | Published: 17 Feb 2014

RingCentral

A TCO Comparison for Unified Communications and Collaboration
sponsored by Cisco
WHITE PAPER: This exclusive resource examines a feature-rich, scalable unified communications solution that can drive innovation and increase productivity. Read on to see how it compares to other leading unified communications solutions.
Posted: 18 Jun 2014 | Published: 18 Jun 2014

Cisco

Accelerate the delivery of modern applications
sponsored by Hewlett-Packard Company
WHITE PAPER: An IT modernization project will be unique to your business, and to successfully manage it you'll need the appropriate tools, resources, and best practices throughout the process. Read this paper to get a framework for initiating your modernization efforts.
Posted: 28 Dec 2011 | Published: 30 Sep 2011

Hewlett-Packard Company

Accelerate the delivery of modern applications
sponsored by Hewlett-Packard Limited
WHITE PAPER: An IT modernization project will be unique to your business, and to successfully manage it you'll need the appropriate tools, resources, and best practices throughout the process. Read this paper to get a framework for initiating your modernization efforts.
Posted: 02 Mar 2012 | Published: 02 Mar 2012

Hewlett-Packard Limited

Accelerating Unified Communications With an Enterprisewide Architecture
sponsored by Avaya
WHITE PAPER: To support today’s business challenges, enterprises require a new architecture for communications that is standard, loosely coupled, three-tier and centralized.
Posted: 22 Sep 2011 | Published: 22 Sep 2011

Avaya

Achieving New Productivity Gains Through Unified Communications and Collaboration Solutions
sponsored by HP & Intel®
WHITE PAPER: The HP/Microsoft solutions for unified communications and collaboration aim to enable midsize organizations to optimize their own communications and collaboration by leveraging actual customer experiences to develop "best practices" for this area, thus reducing the operational costs incurred by disruptions and recoveries. Read this paper for more.
Posted: 20 Sep 2010 | Published: 20 Sep 2010

HP & Intel®

Addressable Advertising Opportunities for Network Operators
sponsored by Motorola, Inc.
WHITE PAPER: This paper provides an overview of advanced advertising opportunities and outlines Motorola's commitment to targeted video advertising.
Posted: 05 Jan 2009 | Published: 23 Dec 2008

Motorola, Inc.

Admiral Group ensures superb performance and scalability
sponsored by IBM
WHITE PAPER: Read this white paper to learn how one growing organization leveraged an advanced platform to scale and meet increasing demands. Discover how they were able to improve the overall performance of their systems, enabling them to cut costs and respond quicker to changing requirements.
Posted: 06 Jun 2012 | Published: 30 Jun 2011

IBM

Anticipating the Bandwidth Bottleneck
sponsored by Motorola, Inc.
WHITE PAPER: This paper examines trends in consumer content consumption and projects the future bandwdith requirements of broadband connections to the home.
Posted: 05 Jan 2009 | Published: 23 Dec 2008

Motorola, Inc.

Are You Ready for Cloud-Based HD Video Collaboration?
sponsored by LifeSize
WHITE PAPER: At last, HD video collaboration has become inexpensive enough and easy enough for just about any business to use.
Posted: 27 Sep 2011 | Published: 27 Sep 2011

LifeSize

Avaya Video Collaboration Solution for IP Office
sponsored by Avaya
WHITE PAPER: In the age of the globally-dispersed business, IT and organizational leaders are searching for ways to improve collaboration. This data sheet introduces a video collaboration solution that can make meetings more productive, efficient, and meaningful for organizations of all sizes.
Posted: 14 Jun 2013 | Published: 14 Jun 2013

Avaya

Beyond Business as Usual: The Mega Shift Toward Social Communications
sponsored by IBM
WHITE PAPER: Discover how integrating social software with communications is transforming the modern workplace, maximizing the potential of human capital, and generating value for businesses worldwide.
Posted: 09 Apr 2013 | Published: 02 Oct 2012

IBM

Beyond HA: The Middleware Factor in Rapid Services Deployment in Next-Generation Networks
sponsored by Enea
WHITE PAPER: This white paper examines the evolution of adoption commercial-off-the-shelf (COTS) middleware, including the criteria for what makes adoption more viable for the telecommunications industry.
Posted: 15 Sep 2008 | Published: 15 Mar 2008

Enea

Beyond Job Scheduling:The Road To Enterprise Process Automation
sponsored by UC4 Software, Inc
WHITE PAPER: This white paper demonstrates the ever-increasing value of enterprise process automation and outlines a set of requirements for truly achieving it.
Posted: 11 Aug 2011 | Published: 31 Dec 2010

UC4 Software, Inc
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T-CARRIER SYSTEMS DEFINITION (continued): …  level, the T3 line, providing 44.736 Mbps, is also commonly used by Internet service providers. The T-carrier system is entirely digital, using pulse code modulation (PCM) and time-division multiplexing (TDM). The system uses four wires and provides duplex capability (two wires for receiving and two for sending at the same time). The T1 digital stream consists of 24 64-Kbps channels that are multiplexed. (The standardized 64 Kbps channel is based on the bandwidth required for a voice conversation.) The four wires were originally a pair of twisted pair copper wires, but can now also include … 
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