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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  … 
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T-Carrier Systems White Papers (View All Report Types)
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5 Pillars of API Management with CA Technologies
sponsored by CA Technologies.
WHITE PAPER: View this white paper to learn about each of the 5 pillars API management.
Posted: 10 Jun 2015 | Published: 31 Dec 2014

CA Technologies.

5 Super Powers To Look for When Evaluating DRaaS Providers
sponsored by Assuritive
WHITE PAPER: This white paper outlines and examines the five most indispensable attributes to look for when assessing DRaaS solutions. Read on here to learn how to evaluate using 5 criteria.
Posted: 26 Aug 2015 | Published: 26 Aug 2015


5 Ways UC Makes IT a Hero
sponsored by XO Communications
WHITE PAPER: Before the arrival of unified communications (UC), IT departments didn't get much credit. Now, they are responsible for deploying the most productive, effective, and collaborative tool set ever seen in business communications. Read this white paper for five reasons that UC makes IT a hero.
Posted: 26 May 2015 | Published: 26 May 2015

XO Communications

8 Questions to Determine Whether Your Technology can Support Your Growth Strategy
sponsored by Verizon
WHITE PAPER: In the following white paper, learn about the top eight questions to ask yourself or business leaders to determine whether or not your business has the necessary technology in place to take operations to the next level.
Posted: 23 Sep 2015 | Published: 23 Sep 2015


A Practical Guide to Choosing the Right IT Systems
sponsored by Oracle & Intel
WHITE PAPER: In the following white paper, learn about the importance of choosing the right IT systems. Read on now and learn about the potential downfalls of choosing the inappropriate systems for your niche, where to turn for advice on the right systems, and more.
Posted: 22 Sep 2015 | Published: 22 Sep 2015

Oracle & Intel

A Seven-Way Comparison of the HCM Suite 'Big Three'
sponsored by Workday
WHITE PAPER: When selecting an HCM vendor, you must consider capabilities like geographic presence, extensibility, and ease of use for managers. This report explores 7 categories of HCM differentiation to help HR and IT project teams choose the best platform for their needs.
Posted: 14 Aug 2015 | Published: 31 Dec 2014


Achieve Business Continuity with Secure and Reliable Unified Communications
sponsored by ThinkingPhones
WHITE PAPER: This white paper provides 5 steps to educating yourself on the common pitfalls when investing in a unified communications platform. Access this paper now to get insight into achieving long-term security and stability with UC.
Posted: 02 Sep 2015 | Published: 02 Sep 2015


An Overview of the Enterprise Service Desk Vendor Landscape
sponsored by IBM
WHITE PAPER: This report is intended for CIOs seeking to select a solution for enterprise service desk, and designed for enterprises in which service desk use cases may include seamless movement between on-demand and on-premise. Access this research to reevaluate and help your organization understand what's new in the enterprise service desk market.
Posted: 15 Sep 2015 | Published: 31 Dec 2013


Are You Getting the Most from Your Communications?
sponsored by Vodafone/Cisco
WHITE PAPER: This white paper examines a cloud-based UC platform that will ensure you modernize your communications to enhance your collaborative business practices. Access it now to build a consistent experience with optimized UC.
Posted: 19 Jun 2015 | Published: 19 Jun 2015


ASG Perfman 2020 Overview: IT Capacity Planning for Today and in the Future
sponsored by ASG
WHITE PAPER: Read the following solution overview to uncover an IT capacity planning and management system that can boost IT service levels, lower costs, and provide insights that allow data center professionals to make better decisions.
Posted: 05 Aug 2015 | Published: 05 Aug 2015


Back to the Future: The Hybrid Organisation: People
sponsored by
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

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


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


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


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


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


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


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


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


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

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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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