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    • How to Block Caller-ID

      How to Block Caller-ID

      Always test as much as possible before relying on any technique to block Caller-ID. Some of these methods to block Caller-ID work in some areas, but not in others. Block Caller-ID For a Single Call Using a LASS Code Dial *67 before you dial the number. (141 in the United Kingdom) Block Caller-ID On All

    • NAM: Number Assignment Module

      NAM: Number Assignment Module

      The NAM (Number Assignment Module) is the EPROM (Erasable Programmable Read-Only Memory) in a mobile telephone which holds information such as the MIN (or MDN) and SIDH.  The data fields stored in a phone’s NAM vary between the various mobile telephone specifications, such as AMPS/NAMPS, GSM, PCS, CMDA.  In modern networks, NAMs can be reprogrammed

    • Pay as You Go Cell Phones

      Pay as You Go Cell Phones

      Sometimes called pre paid or prepay cell phone plans, Pay as You Go Cell Phones are usually used in specific types of mobile phone calling plans. Unlike standard mobile phone calling plans that charge a set monthly fee for a specific amount of calls, pay as you go cell phone calling plans only require the

    • How to Restore a Blackberry to Factory Settings

      How to Restore a Blackberry to Factory Settings

      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

    • LATA (Local Access and Transport Area)

      LATA (Local Access and Transport Area)

      A LATA (Local Access and Transport Area) is a geographical and administrative area that is the responsibility of an LEC (Local Exchange Carrier). It is an expression used in U.S. telecommunications law. LATA borders are outlined around markets, and not essentially along present state, province, or even area code borders. Several LATAs traverse over state

    • The History of Cell Phones

      The History of Cell Phones

      Cell phone technology  is based on radio technology that was developed from the 1940’s onward. For instance, the beginning of cell phones can be traced to the innovation in taxi cabs, police cars, and other service vehicles where two way radios allowed taxi drivers or police officers to communicate with one another or with a

    • MTSO: Mobile Telephone Switching Office

      MTSO: Mobile Telephone Switching Office

      The Mobile Telephone Switching Office, or MTSO, is a system that automatically keeps track of a cell phone user’s relative signal by monitoring readings from cell phone towers near the user. MTSO systems also automatically switch a cell phone’s service from one cell phone tower to another depending on which tower will provide the user

    • Who Invented the Telephone?

      Who Invented the Telephone?

      The invention of the telephone is credited to American Alexander Graham Bell and Thomas Watson in the mid-to-late 19th Century. Although Bell ultimately prevailed in the early signs of patent wars to come in the tech industry, there are a number of inventors who helped contributed technological and conceptual advancements that furthered telephone technology in

    • Unlocked Cell Phones

      Unlocked Cell Phones

      To understand what an unlocked cell phone is, it is important to first understand what a locked cell phone is. A locked cell phone is one that can only be used with one cellular service provider. In contrast, an unlocked cell phone can be used with any cellular service provider. When a cell phone is

    • IMSI (International Mobile Subscriber Identity)

      IMSI (International Mobile Subscriber Identity)

      IMSI (International Mobile Subscriber identity) is the information that is used for identification of a mobile phone end-user on a network  and is uniquely associated with a given cell phone The IMSI code is stored as a 64 bit number or field, and is sent by the mobile phone to the cellular network. The code

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