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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 Systems White Papers (View All Report Types)
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Cloud IT: The Impact of Cloud Supply Chain Platforms on the Role of IT
sponsored by GT Nexus
WHITE PAPER: In this valuable white paper learn more about the impact of cloud supply chain platforms on the role of IT and how you can better prepare your team for the challenges they may face.
Posted: 19 Feb 2015 | Published: 19 Feb 2015

GT Nexus

Cloud UC Savings and Flexibility Keeps Lincoln Moving
sponsored by MASERGY
WHITE PAPER: Read this short case study which shows how a moving and storage company deployed UC to improve flexibility and create saving.
Posted: 15 Jul 2016 | Published: 15 Jul 2016

MASERGY

Compete Big by Achieving Business Outcomes with Improved IT Infrastructure
sponsored by HPE and Intel®
WHITE PAPER: Access this white paper to find out how eight different companies drove significant business benefits by deploying converged infrastructure technologies.
Posted: 06 Jun 2016 | Published: 06 Jun 2016

HPE and Intel®

Consolidation: The Foundation For IT and Business Transformation
sponsored by ServiceNow
WHITE PAPER: In this exclusive guide, discover a strategy that will enable you to identify and consolidate duplicative and outmoded resources in order to lower operating costs, increase efficiencies, and more.
Posted: 09 Sep 2013 | Published: 09 Sep 2013

ServiceNow

Controlling Software Asset Management in the Mobile Era
sponsored by Snow Software
WHITE PAPER: How can you balance growing user demands and at the same time ensure your company is not exposed to license liability? Discover how creating a software store tightly integrated with effective software management processes can meet these goals.
Posted: 15 Jun 2016 | Published: 15 Jun 2016

Snow Software

Cost-Benefit Analysis: Comparing Key Players for Structured Analytics
sponsored by IBM
WHITE PAPER: Can your organization implement Hadoop clusters without being crippled by IT costs? This resource considers two major players offering structured analytics. Access now to see each of their cost-benefit results and discover the best choice for your business.
Posted: 26 Oct 2015 | Published: 26 Oct 2015

IBM

CW Buyers Guide: Green IT
sponsored by ComputerWeekly.com
WHITE PAPER: This six-page Buyer’s Guide to Green IT helps CIOs and senior IT professionals to identify the issues around going green and explains the pros and cons of using third-party facilities to run IT services.
Posted: 29 Nov 2012 | Published: 26 Jan 2011

ComputerWeekly.com

CW+: Quocirca report: Communications technology – be prepared to be flexible
sponsored by ComputerWeekly.com
WHITE PAPER: Communications needs for many organisations are changing rapidly. Internally, there are always new technologies appearing and changes in working styles to deal with but there is now, increasingly, the influence of more social and consumer choices affecting the officially deployed systems.
Posted: 21 Oct 2011 | Published: 12 Aug 2010

ComputerWeekly.com

CW+: Quocirca report: Telecoms re-invention - optimising the online customer experience
sponsored by ComputerWeekly.com
WHITE PAPER: As networks, devices and media converge, telecoms companies have increasingly complex catalogues of products and services on offer to customers who are, in turn, becoming more aware that they can easily switch to other providers.
Posted: 21 Oct 2011 | Published: 24 Aug 2010

ComputerWeekly.com

Do your collaboration tools support the latest ways in which people work?
sponsored by Cisco
WHITE PAPER: You need to ensure that your workplace and worker's needs are reflected in the collaboration technology that you have deployed. Since your workers have changing needs, the flexibility of the newest collaboration tools is critical.
Posted: 22 Aug 2016 | Published: 31 Dec 2015

Cisco

Cloud rEvolution: A Workbook for Cloud Computing in the Enterprise
sponsored by CSC
WHITE PAPER: This white paper will get you up to speed on all aspects of cloud computing. It will help you examine cloud opportunities, review potential issues, and consider where and how specific information should be processed in your organization. Check out this white paper to learn more.
Posted: 17 Nov 2010 | Published: 17 Nov 2011

CSC

Cloud-Based Services Accelerate Public Sector Adoption of Video Collaboration
sponsored by Polycom, Inc.
WHITE PAPER: The cloud is growing as a choice for government at all levels and globally. Why? Two big reasons: budget cuts and a need to streamline operations to provide more innovative, efficient services to a demanding, increasingly tech-savvy public.
Posted: 06 Sep 2012 | Published: 06 Sep 2012

Polycom, Inc.

Collaboration Is the next Game Changer in Customer Service
sponsored by Cisco
WHITE PAPER: This exclusive paper discusses how collaboration is emerging as the next big game changer for customer service, providing practical examples and key insights into how four companies implemented collaboration technologies and used them to transform their customer service environments.
Posted: 12 Jun 2014 | Published: 12 Jun 2014

Cisco

Communicate, Communicate, Communicate
sponsored by Global Knowledge
WHITE PAPER: This book excerpt examines the importance of communication in an organization and presents practical concepts for leaders to apply easily. Read on now to gain access to a unique set of strategies and initiatives designed to enable leaders to build capacity and confidence in their ability to perform.
Posted: 25 Oct 2013 | Published: 25 Oct 2013

Global Knowledge

Considerations for Building Video Chat and Streaming Applications
sponsored by Oxagile
WHITE PAPER: This whitepaper stacks up against each other the chat solutions and media servers that will set an underlying base for either custom video streaming or video chat products that you might consider building.
Posted: 07 Aug 2013 | Published: 07 Aug 2013

Oxagile

Control IT With Configuration Audit and Control
sponsored by Tripwire, Inc.
WHITE PAPER: Learn how establishing a change policy that enforces all changes are auditable and authorized, and all unauthorized changes are investigated, can enable IT organizations to reach compliance, security, and availability goals
Posted: 01 Mar 2007 | Published: 01 Feb 2007

Tripwire, Inc.

Converged Communications: People and Applications in Synch
sponsored by Dell, Inc.
WHITE PAPER: A unified communications platform can provide collaboration tools necessary for a company to gain a competitive edge by increasing employee productivity and improving work flows and processes. Learn about an approach that can help simplify the process of transitioning to a unified communications platform.
Posted: 23 May 2011 | Published: 23 May 2011

Dell, Inc.

Cool IT Equipment Efficiently to Lower Energy Use and Cut Costs
sponsored by Upsite Technologies, Inc.
WHITE PAPER: To optimize your data center infrastructure, consider these four practical best practice steps that Upsite's engineers have devised for solving cooling inefficiencies through proper airflow management.
Posted: 14 Oct 2008 | Published: 09 Oct 2008

Upsite Technologies, Inc.

Critical Communications for Business Continuity: How to Ensure Employees, Partners & Customers Stay Connected
sponsored by Polycom, Inc.
WHITE PAPER: This paper examines why companies should develop and implement an on-demand conferencing and collaboration plan that supports business continuity for both the enterprise and its customers.
Posted: 18 Oct 2011 | Published: 18 Oct 2011

Polycom, Inc.

Delivering Enterprise Value with Service Management
sponsored by ServiceNow
WHITE PAPER: This IDC Research report provides an analysis of the business value that 10 businesses are achieving with cloud-based IT service management services. Read on to increase service management productivity across your business by automating repeatable processes, and more.
Posted: 20 Jun 2016 | Published: 31 Mar 2015

ServiceNow

Delivering SOA Solutions: Service Lifecycle Management.
sponsored by IBM
WHITE PAPER: With service-oriented architecture (SOA), once-siloed business functions, IT processes and data are exposed as services that can be reused--across departments, lines of business (LOBs) and even entire organizations.
Posted: 20 Aug 2008 | Published: 20 Aug 2008

IBM

Developing an effective resiliency capability within a cloud design
sponsored by IBM
WHITE PAPER: Read this white paper to learn how to develop a reliable resiliency management program for your cloud environment. Review the key elements, business areas and questions you should consider.
Posted: 27 Jun 2012 | Published: 31 Aug 2011

IBM

Discovery Communications Continues Global Expansion with Help from Savvis Managed Services
sponsored by SAVVIS
WHITE PAPER: Savvis delivers a complex, fully managed infrastructure for Discovery to support its real-time advertising deliverables, ad sales, scheduling, and programming for all its international operations. Savvis’ solution allows Discovery to take advantage of a broad portfolio of managed services.
Posted: 25 Jun 2010 | Published: 25 Jun 2010

SAVVIS

Document Solutions IP Faxing versus Conventional Faxing: A Critical Analysis
sponsored by Premiere Global Services
WHITE PAPER: This white paper uses examples in three industries with the heaviest fax usage - finance, healthcare, and insurance - to demonstrate costs and risks that are shared across all industries.
Posted: 10 Oct 2008 | Published: 10 Oct 2008

Premiere Global Services

Does Your Communications and Collaboration Solutions Meet your Mid-Size Business Needs?
sponsored by Cisco Systems, Inc.
WHITE PAPER: This exclusive paper examines how cloud collaboration technologies can help your organization overcome some of the common communication challenges faced today.
Posted: 29 Jan 2014 | Published: 29 Jan 2014

Cisco Systems, 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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