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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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Field Service Management in the Cloud
sponsored by Oracle Corporation UK Ltd
WHITE PAPER: In today's digital world, cloud applications are used to run many mission-critical tasks for enterprises. Read this white paper to learn how cloud applications allow you to constantly improve your systems, ensuring operational efficiency and excellent customer service.
Posted: 23 Apr 2015 | Published: 31 Dec 2014

Oracle Corporation UK Ltd

Five Ways to a More Competitive Enterprise
sponsored by XO Communications
WHITE PAPER: This white paper presents a communications system designed to be easily manageable, affordable and efficient.
Posted: 02 Mar 2015 | Published: 02 Mar 2015

XO Communications

Flying High on the Use of Red Hat Enterprise Linux
sponsored by Red Hat
WHITE PAPER: This white paper explains how UK-based organization Flybe, Europe's largest regional airline, was able to leverage Linux to revolutionize their IT support capabilities, creating new opportunities for innovation and revenue streams.
Posted: 03 Oct 2014 | Published: 30 May 2014

Red Hat

Gartner's Magic Quadrant for IT Risk Management 2015
sponsored by Modulo
WHITE PAPER: This white paper examines the strengths and weaknesses of several ITRM platforms and provides insight into the market. View now to uncover the need to know facts about ITRM and how to choose the platform right for your organization.
Posted: 06 Apr 2015 | Published: 10 Mar 2015

Modulo

Get Back to a Personalized Customer Experience.
sponsored by Cisco Systems, Inc.
WHITE PAPER: Discover how your organization can increase customer satisfaction by aligning your services. Learn how a seamless personalized experience for customers can create loyalty and drive sales.
Posted: 05 May 2015 | Published: 05 May 2015

Cisco Systems, Inc.

Get Back to Productive Virtual Meetings
sponsored by Cisco Systems, Inc.
WHITE PAPER: Access this white paper for a how-to guide to improving your virtual meetings with video technology.
Posted: 07 May 2015 | Published: 07 May 2015

Cisco Systems, Inc.

Give digital a business focus
sponsored by Hewlett-Packard Limited
WHITE PAPER: Businesses need a way to consolidate this data to unify communications and deliver a seamless experience across multiple channels.For many organizations, the solution lies in outsourcing. Discover if outsourcing is right to manage your multichannel communications data in this informative white paper.
Posted: 21 Apr 2015 | Published: 31 Mar 2014

Hewlett-Packard Limited

Hosted PBX Provider Evaluation Checklist
sponsored by XO Communications
WHITE PAPER: In this white paper, you'll discover the 10 key questions to ask service providers as you try to find the right fit for your enterprise.
Posted: 03 Apr 2015 | Published: 26 Dec 2013

XO Communications

How a Cloud Phone System Benefits Multi-Site Businesses
sponsored by RingCentral
WHITE PAPER: This white paper explains how you can cure your communications headaches with the cloud.
Posted: 25 Mar 2015 | Published: 05 Dec 2014

RingCentral

How a Cloud Phone System Benefits Multi-Site Businesses
sponsored by RingCentral
WHITE PAPER: Access this white paper to discover how a cloud phone system is vital to a multi-location business.
Posted: 23 Apr 2015 | Published: 26 Dec 2014

RingCentral

How a Cloud Phone System Uniquely Supports Your Mobile Workforce
sponsored by RingCentral
WHITE PAPER: In this white paper, you'll discover how cloud phone systems enable employees to work from any location without disconnecting from colleagues and customers.
Posted: 21 Apr 2015 | Published: 21 Apr 2015

RingCentral

How a Cloud Phone System Uniquely Supports Your Mobile Workforce
sponsored by RingCentral
WHITE PAPER: Access this white paper now and discover how a cloud phone system can integrate your mobile workforce with ease.
Posted: 30 Apr 2015 | Published: 26 Dec 2014

RingCentral

How Can You Meet Business Demands Quickly, with Agility and Flexibility?
sponsored by Red Hat
WHITE PAPER: This whitepaper explains how Red Hat Enterprise Linux can help you leverage the same advanced environment and open source solutions applied by today's most innovative IT organizations, such as Amazon and Facebook, and transition to an infrastructure that is open and flexible.
Posted: 09 Oct 2014 | Published: 09 Oct 2014

Red Hat

How Cloud and Mobile are Perfect Partners for UC
sponsored by Avaya
WHITE PAPER: Access this white paper to discover how cloud computing and mobile technologies are making it easier and more affordable to enjoy advanced communication capabilities.
Posted: 05 May 2015 | Published: 05 May 2015

Avaya

How Drive-by Requests, Meetings, and Interruptions Are Destroying Your Productivity
sponsored by Workfront
WHITE PAPER: Interruptions make it almost impossible for you to be productive. In this white paper, learn how to stop this unplanned work and gain precious hours.
Posted: 18 May 2015 | Published: 18 May 2015

Workfront

Extending Enterprise Networks with Service Delivery Environments
sponsored by Alcatel-Lucent
WHITE PAPER: This vendor white paper - prepared by Alcatel-Lucent - discuses how service providers need to continuously expand their service offerings to address increasing competitive demands, create new ways to drive business and increase market share.
Posted: 10 Sep 2007 | Published: 01 Sep 2007

Alcatel-Lucent

Find the UC Solution that Fits your Budget
sponsored by North Sydney IT and Cisco
WHITE PAPER: This informative paper examines some of the top UC solutions on the market and compares their TCO so you can see which tool will both satisfy your requirements and fit your budget.
Posted: 03 Apr 2014 | Published: 03 Apr 2014

North Sydney IT and Cisco

Five Best Practices For Unified Communications
sponsored by AT&T Corp
WHITE PAPER: To meet today’s increasing demands, businesses need to communicate and collaborate more efficiently. Communication needs to be timely and effective, reaching people where and when they want to be reached, at the office, at home or on the go.  Read this white paper to learn the five best practices for unified communications.
Posted: 13 Oct 2010 | Published: 13 Oct 2010

AT&T Corp

From Fear to Value: CIO strategies for propelling business through the economic crisis
sponsored by IBM
WHITE PAPER: Your aspiration: As a CIO, drive change, innovation and efficiency to help build a smarter enterprise that will prosper amidst global competition. Your daily challenge: As a CIO, deliver business results faster and better–with less. This whitepaper outlines key strategies for CIOs to drive business results through the economic crisis.
Posted: 18 Jun 2010 | Published: 17 Mar 2009

IBM

Frost & Sullivan – 2013 Global VC Technology Leadership Award
sponsored by Vidyo, Inc.
WHITE PAPER: This Frost & Sullivan research paper details why Vidyo was awarded their Technology Leadership award in the videoconferencing market and how the solution meets today's top VC benchmarks.
Posted: 02 May 2013 | Published: 31 Dec 2012

Vidyo, Inc.

Gaining Cloud Fax Advantages with SAP Systems
sponsored by Esker Inc.
WHITE PAPER: Adoption of cloud services for fax communnication has steadily increased as organizations seek to reduce costs, simplify their IT landscapes and streamline processes. Companies looking to integrate fax with their SAP applications no longer have to choose between efficiency, cost and functionality.
Posted: 21 Dec 2010 | Published: 21 Dec 2010

Esker Inc.

Get Ready for Unified Communications!
sponsored by Arkadin
WHITE PAPER: This informative guide explores a 5 step plan for smooth, effective implementation of your newly acquired unified communications platform.
Posted: 20 May 2014 | Published: 20 May 2014

Arkadin

Getting Mobile Collaboration Right
sponsored by Avaya
WHITE PAPER: This valuable guide offers information and advice to help you prepare and build an intelligent mobile collaboration strategy.
Posted: 19 Jun 2013 | Published: 19 Jun 2013

Avaya

Global Trends Drive Business Strategies
sponsored by Alcatel-Lucent
WHITE PAPER: Today’s business models do not create the commensurate revenue to fund the investment to deliver against growing traffic volumes. This is particularly salient in North America as CSPs provide more services and bandwidth on flat rate ‘all-you-can-eat’ price models. Read this paper to learn so much more.
Posted: 19 Aug 2010 | Published: 16 Aug 2010

Alcatel-Lucent

How Customers Are Cutting Costs and Building Value with Microsoft Virtualization
sponsored by Microsoft
WHITE PAPER: Virtualization provides powerful, tangible ways to streamline many traditionally time-consuming processes and minimize the resources needed to deploy and manage IT resources. This white paper examines how Microsoft® customers are using virtualization technology to simplify their IT infrastructure, IT processes, and save money.
Posted: 19 Mar 2009 | Published: 03 Nov 2008

Microsoft
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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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