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DVI (Digital Video Interface) is the standard digital interface for PCs (in contrast to HDMI, which is more commonly found on HDTV devices).   The DVI standard is based on transition-minimized differential signaling (TMDS). There are two DVI formats: single-link and dual-link. Single-link cables use one TMDS-165 MHz transmitter, and dual-link cables use two. The dual-link cables double the power of the transmission. A single-link cable can transmit a resolution of 1920 x 1200 vs. 2560 x 1 ...
Organizations often use private networks such as MPLS service for data transfer because they offer clear advantages in speed, delay/jitter, and availability compared to the Internet.  As convenient as these networks are, however, they leave data vulnerable. Here are two myths of MPLS security:   Myth #1: “We use a private network” is often stated as the reason for not protecting data as it travels over third party networks. Truth#1: MPLS isn’t really private. Organi ...
For the second year in a row, Black Box made the InformationWeek 500 list of the nation’s most innovative users of business technology. In the latest issue of their magazine, InformationWeek surveyed over 500 executives. Through this survey they were able to identify the top IT initiatives from 2011 to 2012. In terms of cloud adoption, 85% of executives said they’re using software-as-a-service (SSaS), as opposed to just 79% in 2011. In 2011, 19% we’re using platform-a ...
The Communications Cable and Connectivity Association, Inc, (CCCA), announced the results of tests conducted in July 2012 on off-shore-manufactured cables. The results showed that five of the six samples failed to meet the minimum National Fire Protection Association (NFPA) requirements for fire safety, including low flame spread and/or smoke generation for installation in commercial buildings, schools, and multitenant residences. The CCCA reported that four of the five failing samples exhibited ...
Every network manager needs insight into the inner workings of his or her network.   Two common methods for gaining a window into a network are by installing a network tap or by using a mirror port (called a SPAN port by Cisco®) on a network switch. Both network taps and mirror ports provide a window into traffic on a network segment, enabling you to use a network analyzer or other monitoring tool for troubleshooting, diagnostics, security, or forensics compliance.   A network t ...
The small-to-medium business communications market is changing considerably because of major ongoing development in core networking technology. Voice communications have been migrating from time-based to packet-based switching. An IP PBX is likely to be the standard design platform of the future for enterprise communications systems. The benefits to customers who select an IP PBX exceed the drawbacks.   Performance Value of an IP PBX: Converged network Packet-switched LANs today carry tel ...
Simply put, remote power control is the ability to reset or reboot PC, LAN/WAN, telcom, and other computer equipment without being at the equipment’s location.   Who needs remote power control? Everyone, especially any organization with a network that reaches remote sites. This can include branch offices, unmanned information kiosks, alarm and control systems, and even HVAC systems for climate control. Other applications include unmanned remote monitoring stations, satellite control ...
Installers and end users looking for an economical way to distribute and scale 1080p video content across a wall of tiled screens, look no further. The MediaCento™ IPX Multicast extension system multicasts HDMI video and audio to up to 256 screens on a network. Even better, it can optionally be used to output source video on video walls, so you can easily project video content on a larger scale to create visually stunning video displays.   Integration is easy and receivers install d ...
We’re experienced at putting users in touch with a digital signage solution that fits their needs. To be sure you’re matched to the right platform, we highly recommend speaking with us by phone (1-877-877-2269). But before you call, we advise you to try and answer as many questions as possible below, and check off what features you think you might need:   How many screens do you intend to have? Will the screens have the same or different content? How many locations, and what ...
There are different categories of graded-index multimode fiber optic cable. The ISO/IEC 11801 Ed 2.1:2009 standard specifies categories OM1, OM2, and OM3. The TIA/EIA recognizes OM1, OM2, OM3, and OM4. The TIA/EIA ratified OM4 in August 2009 (TIA/EIA 492-AAAD). The IEEE ratified OM4 (802.ba) in June 2010. It is now updating the distance for OM4 from 300 to 400 meters for 10-GbE. This will be known as 802.3-2012.   OM1 specifies 62.5-micron cable and OM2 specifies 50-micron cable. These are ...
The new system for KVM matrix switching is more flexible, more extendable, and more efficient than ever before. These new configurations bring better functionality and increased productivity to organizations, especially in the post-production broadcasting and professional audio-visual industries. For example, the new technology offers and array of ports that can be dynamically allocated as input or output. This means that ports can be connected to a CPU or connected to a console, and ports c ...
Planning to deploy a wireless network? Avoid these three mistakes! 1. Planning for coverage rather than capacity. A wireless network may have sufficient coverage in the sense that the signal reaches the intended area. However, if there are too many users, the network will become overwhelmed and slow. LESSON: Count square footage and users. 2. Ignoring differences in power requirements. Some wireless devices, particularly smartphones and tablet computers, require a higher signal strength to ...
Fueled by high prices for scrap metal, copper wire theft is a problem around the world. Recently, Southern California seems to be a hotbed for copper wire thefts with a number of arrests in the last few months.   In mid-June, a ring of six thieves was arrested for stealing thousands of pounds of copper wire. The case began when a San Bernardino County sheriff’s deputy noticed a suspicious man near a vacant building. After deputies and local police officers searched the building, the ...
Data centers consume a great deal of power, so one of the most effective things you can do to reduce your data center’s costs is to increase its energy efficiency. Building and certifying a green data center can be well worth it if you’re embarking upon new construction, but most of us are working with existing networks and are looking for ways to make existing networks more energy efficient. Fortunately, there are ways to make your data network greener with minimal disruptions to it ...
We recently launched our new, FREE Digital Signage & Video Distribution Design Guide. This comprehensive resource will help you plan and provision your end-to-end signage network or complete video distribution system. The 76-page guide will help you choose the latest technology and compatible parts for your system, whether you’re considering digital signage for a small or medium business, or planning a fully integrated signage and video distribution system for a corporate, healthcare ...