Before GPS started being deployed in the majority of mobile devices sold on the market, the only method available to track a cell phone was triangulating the cell phone’s position using one of several techniques available to law enforcement and other governmental agencies. Today, most cell phone tracking applications work by accessing the GPS location …
A SIM (Subscriber Identity Module) card is a type of interface card that is found in most modern cell phones and contains the user’s account information as well as some types of media, such as contacts, pictures, and sometimes ringtones. A SIM card contains an ICCID, or Integrated Circuit Card ID, number that identifies the …
TracFone is the 6th largest mobile network operator in the United States. It allows its customers to purchase airtime usage when they purchase phones that companies like Nokia, LG, and Motorola make. A TracFone customer has to activate the cell phone before using it. It can be activated via the TracFone website or TracFone customer …
Code Division Multiple Access (CDMA) is a channel transmission standard that allows several transmitters to send information simultaneously over a single communication channel. This ensures that the available bandwidth is used in an optimized manner. It is a form of multiplexing and is used for wireless communication. Radio communication makes use of two resources: frequency …
NEBS (Network Equipment-Building System) is a standard for telephony equipment. NEBS was developed in the 1970's by Bell Labs (now Telcordia). Many equipment vendors build their equipment to NEBS standards, even when they do not intend for their equipment to be placed in a Central Office. Equipment vendors do this because compliance with the NEBS …
A “Milliwatt (102 Type) Test Line” is a signal generated from an Access Service Provider end office to the customer’s location for the purposes of transmission measurement, that is, testing the line quality and loss of transmission. The generated signal is a 1004 Hz tone at 0 dBm, which is the equivalent of 1 milliwatt …
A Blackberry is a “smartphone” that integrates a phone, media player, email client, web browser, camera, and personal digital assistant (PDA) in a single device. It has many purposes and allows users to perform a number of tasks such as creating notes, accessing the Internet, and scheduling events. Blackberry phones represent over 14% of the …
Caller ID is a telephone service that provides the caller’s phone number and name to the receiver. This data is either displayed on the phone itself or on a caller ID box that is attached to the phone. Most phone providers charge a small fee for this service. It helps people to identify prank callers, …
Many of us have lost our cell phones from time to time but some may have a harder time than others in retrieving their phone. What is worse is when you lose your cell phone in the middle of a texting session or when you have an important phone call to make and the person’s …
Telephone wires are easy to work with and very safe due to the low voltages involved. The most complex part of installing telephone wires is complying with the defined standards. When installing additional telephone wires into an existing facility, it is usually best to determine which telephone wiring standard is currently in use and conform …