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Null Modem Cables

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ALSO CALLED: Null-Modem Cable
DEFINITION: A null modem cable allows you to connect your PC to another nearby PC or serial device using its modem protocol. A popular use of null modem cables is for setting up "head-to-head" gaming between two players at different computers in the same room. (A null modem cable is limited to 30 feet in length.)The standard RS-232C serial communications interface defines a signal protocol between a Data Terminal  … 
Definition continues below.
Null Modem CablesWhite Papers (View All Report Types)
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SQL Server HA and DR: A Simple Strategy for Realizing Dramatic Cost Savings
sponsored by SIOS Technology Corp
WHITE PAPER: Read this exclusive white paper to find out how you can tackle SQL Server downtime without busting your disaster recovery protection and high availability budget.
Posted: 21 Apr 2014 | Published: 31 Jan 2014

SIOS Technology Corp

Successfully Deploying Communications And Collaboration - Solutions To Meet The Needs Of Your Medium-Size Business
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 face today.
Posted: 29 Jan 2014 | Published: 29 Jan 2014

Cisco Systems, Inc.

The Philips ErgoSensor
sponsored by MMD
WHITE PAPER: The following white paper explores the benefits of a uniquely interactive monitor that provides real-time insights to your employee's posture, alertness, head tilt, and more so they can correct unhealthy body positioning, ultimately increasing their well-being, happiness, and efficiency.
Posted: 14 Apr 2014 | Published: 14 Apr 2014

MMD

The Role of Session Manager in Applying Features to Calls via Sequenced Applications, Part 1
sponsored by Global Knowledge
WHITE PAPER: Access this exclusive paper to find out how the Communication Manager, once defined as an Entity within the Avaya Aura Session Manager, can be configured as a feature server within a sequenced application.
Posted: 17 Dec 2013 | Published: 17 Dec 2013

Global Knowledge

Top 3 Reasons for IT to Adopt Desktop Virtualization
sponsored by VMware
WHITE PAPER: This whitepaper explains the three major reasons organizations should absolutely consider VDI for the business.
Posted: 07 Oct 2013 | Published: 07 Oct 2013

VMware

Top Ten Considerations For A Successful Windows 8 Deployment
sponsored by Dell and Microsoft
WHITE PAPER: Windows 8 boasts a number of upgrades and enhancements, and for the users of legacy Windows versions, time is running out to migrate.
Posted: 05 Oct 2012 | Published: 05 Oct 2012

Dell and Microsoft

Unified Communications
sponsored by IBM
WHITE PAPER: This exclusive white paper examines how your peers are adopting UC solutions, including which solutions can satisfy your specific needs best and what direction the overall market is heading in.
Posted: 19 Mar 2014 | Published: 19 Mar 2014

IBM

Solihull Council Marks a Decade with Red Hat Open Source Technology , Saving over £1 Million
sponsored by Red Hat and HP
WHITE PAPER: In this informative paper, learn why a government industry has relied on the same Linux solution for the past ten years, using an open source model to simplify software and hardware implementations, reduce costs, and more.
Posted: 10 Apr 2013 | Published: 10 Apr 2013

Red Hat and HP

Strategic, User-Driven, and Managed: The Future of Unified Communications and Collaboration
sponsored by Dimension Data
WHITE PAPER: This report examines how IT decision-makers and staff in large organizations view and approach UCC today. What are their project priorities? How do they respond to market pressures? Find the answers to these questions, and more.
Posted: 12 Jun 2013 | Published: 12 Jun 2013

Dimension Data

Support PCI Security Compliance with Enhanced Solutions from IBM
sponsored by IBM
WHITE PAPER: This white paper briefly describes PCI requirements, the benefits of compliance and the penalties for noncompliance.
Posted: 13 Feb 2009 | Published: 13 Feb 2009

IBM

Symantec NetBackup 5000 Appliance: Turnkey Deduplication Solution for the Enterprise
sponsored by Symantec Corporation
WHITE PAPER: Most IT organizations today are challenged with the problem of rapid data growth. Read this white paper to find the right data management solution for your organization.
Posted: 28 Dec 2010 | Published: 28 Dec 2010

Symantec Corporation

System Grounding and Ground Fault Protection for Data Centers
sponsored by Square D Critical Power Competency Center
WHITE PAPER: This paper presents the fundamentals of power system grounding, definitions and requirements of the National Electrical Code with respect to grounding, the need for low voltage ground fault protection and how it is implemented.
Posted: 05 Nov 2008 | Published: 05 Nov 2008

Square D Critical Power Competency Center

System Recovery-Breaking through the Dissimilar Hardware Restore Challenge
sponsored by Symantec Corporation
WHITE PAPER: This paper discusses how Symantec Backup Exec System Recovery Restore Anyware can dramatically change the way organizations perform a wide range of IT tasks, including bare-metal system recovery and restoration to dissimilar hardware.
Posted: 20 Mar 2008 | Published: 01 Dec 2007

Symantec Corporation

Taking a SIP: What Executives Should Know about IP Transformation in the Contact Center
sponsored by Genesys
WHITE PAPER: This white paper is intended for executives who are seeking to understand why SIP (Session Initiation Protocol) is a must-have technology for the contact center today, and how SIP-enabled IP solutions can help align you with your goals.
Posted: 04 Sep 2008 | Published: 04 Sep 2008

Genesys

The CIO’s Guide to Building a Mobile Device Management Strategy – And How to Execute on It
sponsored by BlackBerry
WHITE PAPER: As the mobility trend continues to take over the business world, CIOs are left with the difficult task of figuring out the best way to manage the drastic increase in mobile users. Discover how mobile device management (MDM) strategies can enable you to improve mobile security, increase productivity, reduce TCO, and more.
Posted: 13 Sep 2012 | Published: 13 Sep 2012

BlackBerry

The Corporate PC Refresh Project
sponsored by Cibecs
WHITE PAPER: This comprehensive white paper explores the many challenges organizations need to address in order to ensure smooth implementation, coordination and management of their PC refresh initiatives.
Posted: 06 Jul 2011 | Published: 06 Jul 2011

Cibecs

The Cost and Benefits of On-Demand Vs. On-Premise Procurement Software
sponsored by coupa.com
WHITE PAPER: While there are dozens of procurement software solutions available, there are really only two types offered: "on-premise" procurement software and newer "ondemand" procurement software. This paper outlines an approach to compute and compare them.
Posted: 10 Sep 2008 | Published: 10 Sep 2008

coupa.com

The High Cost of Low-Cost Cable Testers
sponsored by Fluke Networks
WHITE PAPER: It can be hard to figure the total cost of purchasing a new certification tester for network cabling. A low-cost cable tester might save a few thousand dollars in the original purchase, but can cost significantly more in lost productivity throughout the life of the tool. Read on to find the hidden costs that can come along with a “low-cost” tester.
Posted: 14 Jul 2010 | Published: 14 Jul 2010

Fluke Networks

The State of the i
sponsored by Connectria Hosting
WHITE PAPER: Access this white paper to learn about the developments of IBM i on Power Systems. Discover how to achieve valuable benefits like reliability, simplified installation and administration, continuing hardware innovations and much more.
Posted: 18 May 2012 | Published: 18 May 2012

Connectria Hosting

The True Cost of Legacy Voice Mail:  Why Move to Microsoft Exchange Unified Messaging
sponsored by HP and Microsoft
WHITE PAPER: In an effort to understand the costs of maintaining and supporting legacy voice mail systems, COMMfusion LLC conducted a study to identify the quantifiable costs of maintaining and supporting legacy voice mail systems. The results are surprising. Read this paper to learn more.
Posted: 24 Mar 2011 | Published: 24 Mar 2011

HP and Microsoft

Thirty-One Best Practices for the Service Desk
sponsored by GoToAssist
WHITE PAPER: This paper discusses about the thirty one best practices which can serve as the starting point for various evaluation and improvement process.
Posted: 20 May 2008 | Published: 28 Jun 2005

GoToAssist

Two Billion Entry Directory Benchmark
sponsored by Oracle Corporation
WHITE PAPER: This benchmark evaluates Oracle Internet Directory performance under scales and throughput rates representative of those encountered in production use in both the communications industry and as part of large scale delivery architectures.
Posted: 10 Apr 2008 | Published: 01 Mar 2008

Oracle Corporation

Unlocking the Full Power of Massive Parallelism: Solving the Network Bottleneck in MPP Databases
sponsored by Aster Data Systems
WHITE PAPER: This paper describes the technical limitations inherent in the architecture of traditional databases and other MPP (massive parallel processing) alternatives.
Posted: 09 Dec 2008 | Published: 09 Dec 2008

Aster Data Systems

Using Bandwidth More Efficiently with Switched Digital Video
sponsored by Motorola, Inc.
WHITE PAPER: Switched Digital Video (SDV) offers tremendous promise for network operators seeking to more efficiently use bandwidth and deliver highly targeted content to subscribers.
Posted: 05 Jan 2009 | Published: 31 Dec 2008

Motorola, Inc.

Using Virtualization and Digital Control Technologies to Increase Data Center Operating Efficiency
sponsored by Liebert Corporation
WHITE PAPER: This paper focuses on tools that are being developed to balance work load in the data center to improve thermal management.
Posted: 20 Feb 2008 | Published: 01 Jan 2007

Liebert Corporation
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NULL MODEM CABLES DEFINITION (continued): …  Equipment (DTE) - usually your PC - and a Data Communications Equipment (DCE) - or your modem. The signals are transmitted on a set of lines, each of which has a function in the "talk" that the DTE and DCE do back and forth. One line each way is for data; the other lines are for different "statements" that one end of the communication sends to the other. For example, the DTE sends the DCE (usually a modem) a "Request to Send" signal on the RTS line and the DCE replies with a "Clear to Send" signal on the CTS line. After a series of similar exchanges, the DTE sends data on the line devoted … 
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