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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)
76 - 100 of 229 Matches Previous Page  | Next Page
IBM SmartCloud for Social Business Mobility
sponsored by IBM
WHITE PAPER: This white paper introduces one company's portfolio of online services, including scalable and security-rich email, web conferencing, and social collaboration, that can help to improve employee responsiveness and effectiveness in support of social business.
Posted: 02 Oct 2014 | Published: 30 Sep 2014

IBM

Improve Enterprise Email Systems with HP Messaging Services
sponsored by Hewlett-Packard Limited
WHITE PAPER: Find out how HP Messaging Services can increase the reliability and performance of email systems, and help better manage your infrastructure with consistent, efficient and cost-competitive services.
Posted: 04 Sep 2014 | Published: 30 Apr 2013

Hewlett-Packard Limited

Improving Collaboration and Trimming Infrastructure Costs in a Hybrid Environment
sponsored by IBM
WHITE PAPER: This white paper describes how IBM SmartCloud services helped Brunswick Corporation, an employer of 16,000 worldwide, to cost-effectively support a variety of mobile devices, and also enabled them to move email, meeting, and other capabilities to the cloud while keeping other applications in-house.
Posted: 30 Sep 2014 | Published: 29 Nov 2013

IBM

Insights on scaling network efficiency economically
sponsored by HP
WHITE PAPER: Expectations run high in today's bandwidth-intensive, always-on computing world. Users expect instant access to applications, fast-streaming videos, jitter-free voice, and Web pages that load in the blink of an eye. Failing to meet these expectations can have a significant impact.
Posted: 11 Aug 2014 | Published: 31 Dec 2012

HP

HP white paper: Complete Data Protection for VMware Virtual Environments
sponsored by Hewlett-Packard Company
WHITE PAPER: This paper examines the issues of backup and recovery in VMware virtual server environments, and outlines the key features of HP Data Protector.
Posted: 26 Jun 2009 | Published: 01 Nov 2008

Hewlett-Packard Company

HP's Universal CMDB: A Balanced Approach to Unifying IT Operations, Service Desks, and Business Objectives
sponsored by Hewlett-Packard Company
WHITE PAPER: In this white paper, read about the evolution of Configuration Management Database (CMDB) adoption in the market, CMDB solution integration and the overall architecture requirements for CMDB.
Posted: 24 Aug 2007 | Published: 01 Jan 2007

Hewlett-Packard Company

IBM Cognos Lifecycle Manager - Streamline upgrades with automated testing
sponsored by IBM
WHITE PAPER: System upgrades and other IT changes can have a negative impact on business intelligence report content, but testing thousands of reports can be tedious and time-consuming. This resource introduces a utility that relieves the burden by automating the testing process.
Posted: 15 Jan 2014 | Published: 31 Oct 2012

IBM

IBM Cognos Lifecycle Manager - Streamline upgrades. Meet changing business and IT requirements quickly.
sponsored by IBM
WHITE PAPER: The process of verifying that business intelligence report content has not been adversely affected following a change in the IT environment can be time-consuming and tedious. This resource introduces a utility that automates the testing process – read on to learn more.
Posted: 15 Jan 2014 | Published: 30 Sep 2012

IBM

IBM Service Management for the Intelligent Utility Network
sponsored by IBM
WHITE PAPER: The current utilities environment requires companies to decrease costs while increasing the ability to control utility assets. One key challenge is how to take advantage of new technologies to better manage the delivery of service to customers today and into the future. IBM Service Management for the IUN provides a blueprint for getting started.
Posted: 06 Dec 2010 | Published: 06 Dec 2010

IBM

IBM Tivoli Service Request Manager White Paper
sponsored by IBM
WHITE PAPER: This IBM white paper will show you how you can help your organization manage incidents and problems, restore critical services, and minimize service desk calls in this white paper.
Posted: 22 Oct 2010 | Published: 15 Jan 2010

IBM

IBM WebSphere Distributed Caching Products
sponsored by IBM
WHITE PAPER: In today's tech environment, your enterprise systems are seeing higher levels of traffic and more usage spikes due to the proliferation of mobile devices. In this white paper, learn how you can scale your business-critical applications and systems, while maintaining high performance to keep customers satisfied.
Posted: 17 May 2013 | Published: 30 Jun 2012

IBM

IDC Buyer Case Study: Customer-Centric, User-Friendly Videoconferencing
sponsored by Vidyo, Inc.
WHITE PAPER: This IDC Buyer Case Study explores which videoconferencing solution Mydin, Malaysia's largest retailer enterprise, put in place to help connect and communicate, reduce costs, and achieve an optimal ROI.
Posted: 07 May 2013 | Published: 31 Jul 2012

Vidyo, Inc.

IDC White Paper: Making the Business Case for IT Consolidation
sponsored by Hewlett-Packard Company
WHITE PAPER: IDC believes that IT organizations are constantly being asked to do more with less. This analyst report will look at some of the key triggers CIOs look for when deciding to consolidate as well as getting started with consolidation and its impact on the business.
Posted: 26 Jun 2009 | Published: 01 Apr 2008

Hewlett-Packard Company

Impact of Cloud on IT Consumption Models: Top 10 Insights
sponsored by Cisco Systems, Inc.
WHITE PAPER: This whitepaper reviews the conclusions from a survey of IT leaders around the world.
Posted: 08 Nov 2013 | Published: 08 Nov 2013

Cisco Systems, Inc.

Impact of High Density Hot Aisles on IT Personnel Work Conditions
sponsored by APC by Schneider Electric
WHITE PAPER: The use of modern enclosed hot aisles to address increasing power densities in the data center has brought into question the suitability of working conditions in these hot aisle environments. In this paper, it is determined that the additional heat stress imposed by such high density IT environments is of minimal concern.
Posted: 26 Jan 2011 | Published: 26 Jan 2011

APC by Schneider Electric

Implementing Best Practices: The Dell Management Console and ITIL
sponsored by Dell and Symantec
WHITE PAPER: The Dell™ Management Console Powered by Altiris™ from Symantec™ provides a comprehensive management platform based on standardized IT Infrastructure Library (ITIL) processes—facilitating the adoption of industry best practices and helping streamline and simplify IT management in enterprise data centers.
Posted: 15 Oct 2009 | Published: 01 Mar 2009

Dell and Symantec

Improve Organizational Communications
sponsored by Cisco Systems, Inc.
WHITE PAPER: As an organization’s workforce becomes increasingly mobile and dispersed, its ability to survive and thrive depends on effective employee communications. Learn about a collaboration platform that allows for improved employee communication and productivity.
Posted: 28 Oct 2011 | Published: 28 Oct 2011

Cisco Systems, Inc.

Improving Rack Cooling Performance Using Airflow Management™ Blanking Panels
sponsored by APC by Schneider Electric
WHITE PAPER: IT equipment mounted in racks cools itself by drawing ambient air from the data center or network room. If the heated exhaust air is allowed to return to the air inlet of the equipment, an undesirable overheating condition may occur. This paper explains how this problem compromises the cooling process and the benefit of using air blanking panels.
Posted: 29 Apr 2009 | Published: 20 Nov 2008

APC by Schneider Electric

IP Telephony: Reliability You Can Count On
sponsored by ShoreTel - OLD
WHITE PAPER: This paper examines the effects of three different architectures on the ability to deliver IP-based telephony systems that are both highly available and cost effective.
Posted: 19 May 2009 | Published: 19 May 2009

ShoreTel - OLD

IPTV Test and Measurement Best Practices
sponsored by Alcatel-Lucent
WHITE PAPER: This whitepaper focuses on providing a pragmatic set of test and measurement guidelines that can be implemented on a live operational IPTV service. The recommendations given in this paper are generally applicable to any IPTV system.
Posted: 20 Aug 2008 | Published: 01 Jan 2007

Alcatel-Lucent

IT modernization: An exercise in alignment
sponsored by Hewlett-Packard Company
WHITE PAPER: A survey conducted in February 2009 by the Economist Intelligence Unit, sponsored by Oracle and HP, shows that in most companies both the business functions and the IT function understand the potential benefits of modernization. But that does not mean that most companies know how to do it right.
Posted: 15 Oct 2009 | Published: 18 Jun 2009

Hewlett-Packard Company

IT Service Assurance: Achieve proactive IT operations
sponsored by BMC-Accenture
WHITE PAPER: This white paper explores the role of a command center in helping companies monitor and manage individual technologies and explains why a service-oriented approach is essential.
Posted: 22 Aug 2011 | Published: 22 Aug 2011

BMC-Accenture

IT Service Management: It's About Managing Change
sponsored by Hewlett-Packard Company
WHITE PAPER: This white paper describes steps IT executives must take to manage an IT service management (ITSM) implementation to maximize its value and ensure that it achieves the full transformational effect it is capable of delivering.
Posted: 01 Dec 2008 | Published: 26 Nov 2008

Hewlett-Packard Company

IT Transformation Consulting Services: Align your technology direction
sponsored by Hewlett-Packard Company
WHITE PAPER: This brief resource introduces an IT transformation consulting service as a means of achieving effective, value-driven change. Read on now to learn how you can ensure business and IT alignment, spur business growth, and more.
Posted: 09 Oct 2013 | Published: 31 May 2012

Hewlett-Packard Company

IT’s Role in Strategic Planning Key To Success
sponsored by Oracle Corporation
WHITE PAPER: Read this white paper for more research findings as well as CIO insight into how strategic planning can be successful for both sides.
Posted: 01 Oct 2010 | Published: 01 Oct 2010

Oracle Corporation
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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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