The telephone Network Interface Device (NID) is what connects your home telephone lines to the telephone company’s network. It is usually a small gray box located on the exterior of your home. It usually contains a modular phone plug that you can use for testing the line. They need both inside testing and outside testing. In some older installations, you may not have a NID. Instead, you will find a “protector block”, a small plastic covered box where the cable coming out of your house connects to the phone company’s Read More

Most people understand that using their cell phone in their basement or in an office building can be a futile act because the signal is simply not strong enough. Therefore, it is difficult to make phone calls and, more importantly, to send text messages. All the concrete and walls around you make it difficult for the signal to be received in a strong enough amount to properly allow for information to be transmitted. A femtocell, though, is a new type of technology that acts like a relay station for the Read More

An IP (Internet Protocol) address is a unique address that different computers on a computer network use to identify and communicate with one another. An IP address is used as an identifier to find electronic devices connected to one another on a network. Therefore, each device in the network must have its own unique address. An IP address is like a mailing address that is used to deliver data (files) to a computer. Some IP addresses are meant to be unique within the scope of the Internet, whereas others are Read More

One of the basic questions regarding the earth is, how fast does it spin? The earth is constantly spinning; it spins around its axis. An axis in this case is an imaginary line running through the center of the earth from the North Pole to the South Pole. To calculate how fast the earth spins, we need to know a few details. To figure out the speed of the earth at the equator, we need to know the circumference of the earth at the equator. The circumference of the earth Read More

The Microsoft Corporation in conjunction with Windows Vista Service Pack 1 (SP1) released the exFAT file system. The exFAT file system was produced in order to address the short comings of the FAT32 file system; specifically on portable media such as USB sticks or portable hard drives where NTFS file structure use is inappropriate. The exFAT file system is also referred to as FAT64 in some circles. The Microsoft Corporation has a patent pending, which will require licensing for the use of the format. The exFAT structure is supported on Read More

Refractometers measure the refractive index of liquids, gases, and translucent solids such as gemstones. The measurement of how much the speed of light is reduced when traveling through a gas, solid, or solution is referred to as the refractive index. When the device is used to test liquids, it typically measures the salinity, fluid concentration, specific gravity, and blood proteins. The lenses and prisms inside the refractometer create a shadow line inside it that can then be viewed through a magnifying eye piece to note the measurement. Who Invented the Read More

Generally, a transmission signal contains more than a single frequency. This is to say that there might be several different frequencies linked together or else superimposed on each other. This is just the way all telecommunication systems function. For example, with today's communication technology it is virtually impossible to send low frequencies without experiencing any distortion. In fact, when low frequencies are sent the distortion is frequently so severe that the signal cannot even be used. So, what is to be done with the low frequencies to make them usable? Read More

A DVD Ripper is a special kind of software that is capable of ripping (copying) the contents of a DVD to another storage medium, usually a hard disk drive. DVD Rippers serve a variety of purposes including backup/transfer of DVD content and conversion of DVD content to suit playback on various media players or mobile devices. The latest DVD Rippers come equipped with a rich feature set, including decryption, removal of copy protection and region-based restrictions that some DVDs come with. Copying to the Right Format Buying the right product Read More

Understanding ISA Object Permissions You can assign permissions for a number of ISA Server objects, such as those listed here: ISA server H.323 gatekeeper ISA Server arrays Enterprise polices Sessions Alerts The ISA Management MMC snap-in is used to assign permissions for ISA Server objects. The ISA Management console is the primary tool used to administer ISA Server. To assign ISA Server object permissions: Click Start, click Programs, click Microsoft ISA Server and then click ISA Management. To connect to the ISA server, click the Internet Security And Acceleration Server Read More

An Android is a smartphone that Google created that combines the functionality of a cell phone and a computer. While the Android does not provide all of the same features as a computer, it includes many different applications that allow the user to perform a wide variety of tasks that the Android itself does not support. Some of the Android’s standard features include a built-in camera, Wi-Fi access, Bluetooth functionality, and the ability to store media players. While the Android itself does not feature a default media player, several media Read More