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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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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

Data Center Expansion Quickly Addresses Current Resource Constraints
sponsored by IBM
WHITE PAPER: Download now to transform your data center from a resource-constrained environment to a resource-efficient software-defined data center with this cloud architecture, which allows you to scale workloads as needed—without overbuying physical resources or engaging in long deployment cycles.
Posted: 27 Apr 2017 | Published: 31 Dec 2016

IBM

Dell EMC VxRail ™ Hyper-Converged Appliance: Cost and Maintenance Advantages
sponsored by Dell EMC Intel®
WHITE PAPER: Learn down eight key reasons to move to hyper-converged appliances, how they can benefit your data center, as well as a comparison between HCI versus the benefits of older BYO systems. Read on to engage in the results from a cost analysis and management complexity evaluation aimed to make the decision process easier.
Posted: 15 Mar 2017 | Published: 31 Dec 2016

Dell EMC Intel®

Developing a Cloud Strategy for Digital Transformation: Hybrid Cloud and Beyond
sponsored by Dell EMC and Intel®
WHITE PAPER: For those planning a digital transformation at the business level, shifting to a predominantly cloud-based IT environment is imperative—and soon.. Access this IDC white paper to learn about the driving forces behind cloud-based IT, how to avoid getting lost on your journey to the cloud, and more.
Posted: 12 Apr 2017 | Published: 30 Sep 2016

Dell EMC and Intel®

Drive Workforce Productivity and Organizational Agility with Unified Communications
sponsored by Fuze
WHITE PAPER: Disconnected, disjointed communications tools actually impede productivity. This resource details cloud-based unified communications and its myriad benefits, like quality collaboration, efficient remote workers and boost in customer satisfaction.
Posted: 12 May 2017 | Published: 30 Dec 2016

Fuze

Driving Data Center Growth and Innovation with Trusted Hardware Support
sponsored by IBM
WHITE PAPER: Discover a technical support service designed to help you respond effectively to changing hardware demands, from expanding product and service lines to regulatory mandates. Read on to learn about proactive support that will simplify your IT asset management, enhance service quality, and control costs.
Posted: 27 Mar 2017 | Published: 31 Dec 2016

IBM

Driving Growth and Innovation with a Trusted Support Resource
sponsored by IBM
WHITE PAPER: In this paper, you will discover a technical support service designed to help you respond effectively to changing demands. Read on to learn about integrated, proactive support that will simplify your IT asset management, enhance service quality, and control IT costs.
Posted: 10 Mar 2016 | Published: 10 Mar 2016

IBM

Elevating the Enterprise Capabilities of Skype for Business
sponsored by AVST
WHITE PAPER: On its own, Skype for Business supports voice communications with a mix of UC offerings. But implementing the solution as a full or partial PBX replacement in the enterprise requires additional mission-critical applications. Learn what these applications are and how you can deliver them.
Posted: 13 Feb 2017 | Published: 30 Dec 2016

AVST

Embrace risk: secure your hybrid cloud Protected to innovate with the right mix
sponsored by Hewlett Packard Enterprise
WHITE PAPER: Discover how to remove the risky barriers to digital innovation by determining the right mix of hybrid cloud for your IT infrastructure strategy. Access the freedom and flexibility cloud offers by learning 3 security-first principles that will ensure your hybrid cloud is as productive as it is secure and compliant.
Posted: 28 Sep 2016 | Published: 28 Sep 2016

Hewlett Packard Enterprise

Evaluating the ROI of Informal Call Centers
sponsored by AVST
WHITE PAPER: Even if you don't have a formal call center, deploying the right call center tech at your enterprise can reduce your software and maintenance costs by as much as 77%. Learn how to evaluate the ROI of an informal call center here.
Posted: 10 Feb 2017 | Published: 30 Dec 2016

AVST

Deepen Visibility into Cloud and Hybrid IT with Unified Infrastructure Management
sponsored by CA Technologies
WHITE PAPER: Learn why it's recommended your organization extends the visibility of existing infrastructure tools with a unified, hybrid IT monitoring platform—providing visibility into traditional and next-generation technologies. Read on to take a unified approach to IT ops, and monitor all hybrid cloud, software-defined, and converged environments.
Posted: 07 Sep 2016 | Published: 30 Jun 2016

CA Technologies

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.

Dynamic Business Process Management for Communications Service Providers
sponsored by IBM
WHITE PAPER: In today’s demanding environment, communications service providers across all lines of business are struggling to increase their business agility to remain competitive. This paper explores how companies are achieving agility by adopting dynamic business process management (BPM) with telecommunications industry standards. Read on to learn more.
Posted: 02 Aug 2010 | Published: 21 Apr 2010

IBM

Eco-sustainable Wireless Networks: Ready for Prime Time
sponsored by Alcatel-Lucent
WHITE PAPER: Developments in alternative energy technology are creating solutions that provide network operators with the ability to reduce their energy costs and carbon footprint. Read this short whitepaper for more information about alternative energy sources that can make your wireless network more eco-friendly and save you money.
Posted: 02 Oct 2009 | Published: 02 Oct 2009

Alcatel-Lucent

Enabling Innovation and Surpassing the Competition with Visual Collaboration
sponsored by Vidyo, Inc.
WHITE PAPER: This exclusive paper discusses how visual collaboration can be utilized by small to midsized businesses in order to significantly improve productivity and drive innovation. Read on to find out more.
Posted: 28 May 2014 | Published: 28 May 2014

Vidyo, Inc.

Enterprise Backup and Recovery Considerations: How to Maintain Your Restore-Readiness
sponsored by Sirius Computer Solutions
WHITE PAPER: IT systems are vulnerable to a variety of disruptions. This paper will focus on common processes and procedures that should be part of any effective enterprise backup/restore system.
Posted: 08 Jul 2009 | Published: 26 Jun 2009

Sirius Computer Solutions

Enterprise Portal Rationalization: Using a Service-Oriented Architecture to Stop Web Asset Sprawl
sponsored by Oracle Corporation
WHITE PAPER: This paper provides an overview of the problem of Web sprawl, and an account of the rationalization strategies organizations are adopting to gain the upper hand on sprawl. Adopting a service-oriented architecture based on integrated application platform infrastructure emerges as the key to rationalizing sprawl.
Posted: 03 Apr 2009 | Published: 01 Mar 2009

Oracle Corporation

Evaluating the Total Costs of a Unified Communications Solution
sponsored by Cisco
WHITE PAPER: Discover the top recommendations for selecting a UC solution that fits the needs of your business. Learn how to weigh the most important factors and assess the TCO of your UC solution.
Posted: 17 Jul 2013 | Published: 17 Jul 2013

Cisco

Extend the Value of IBM Lotus Applications to Increase Productivity with Avaya Unified Communications - Sponsored by Avaya and IBM
sponsored by Avaya
WHITE PAPER: Good communications are key to any company's success. The most successful enterprises strive for anywhere, anytime communications to best serve employees and clients who are increasingly mobile and geographically diverse. By unifying communications, a company can deliver communications anywhere, anytime and any way.
Posted: 25 Jun 2009 | Published: 25 Jun 2009

Avaya
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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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