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    • How Mobile Phones Are Dangerous to Health

      How Mobile Phones Are Dangerous to Health

      Since the number of cell phone users has continued to increase to more than six billion subscriptions at the turn of the decade, a common question that continues to get asked is how dangerous are mobile phones to one’s health? This question has continued to be asked over the past several decades since mobile phones

    • ABCD Tones

      ABCD Tones

      The ABCD tones are additional DTMF tones that may be used in any way the standard (0-9) tones are used. These tones are generated using a Silver Box. Engineers envisioned phones being used to access computers and other devices. This vision led to the addition of the number sign (#, sometimes called ‘octothorpe’ or ‘pound’)

    • Call Center Outsourcing

      Call Center Outsourcing

      For many small, medium and large businesses outsourcing a call center is an excellent way to generate sales and help current customers with tech support and customer support issues. While some larger companies have the money, time and resources to put in place their own call center, most smaller and mid sized businesses opt for

    • RBOC (Regional Bell Operating Company)

      RBOC (Regional Bell Operating Company)

      RBOC (The Regional Bell Operating Companies) were created as the result of a legal dispute between the US Justice Department and the AT & T Corporation. In 1984, the American Telephone & Telegraph Company split its local operations into 7 autonomous RBOCs that became known as “Baby Bells”. In the beginning, these companies were called

    • AMPS (EIA/TIA-553) and NAMPS (IS-91)

      AMPS (EIA/TIA-553) and NAMPS (IS-91)

      Mobile Frequency Range Rx: 869-894; Tx 824-849 Multiple Access Method FDM Duplex Method FDD Number of Channels 832 Channel Spacing 30kHz Modulation FM AMPS AMPS (Advanced Mobile Phone Service) was the first cellular mobile system in the United States. AMPS operates as an analog system using 30 kHz wide channels. NAMPS AMPS was later enhanced

    • 66 block

      66 block

      A 66 block is a punch-down block used to connect wiring for telephone systems and other low-speed low-voltage wiring applications. A punch-down tool is used to force solid wire into metal slots on the 66 block. The 25-pair standard non-split 66 Block encloses 50 rows; each row has four columns of clips that are electrically

    • How to Dial a DSN Number

      How to Dial a DSN Number

      DSN stands for the Defense Switched Network which is a global phone service used by the United States government capable of both non-secure and secure communications. Traditionally, the DSN network has only been used for voice communications, but in the past decade data and video service have been incorporated into the network through Integrated Services

    • How to Add Ring Tones to my BlackBerry

      How to Add Ring Tones to my BlackBerry

      Owning a Blackberry enables its owners to do much more than they could ever accomplish with a basic cell phone. However, one of the most popular features that have carried over from basic cell phone to the BlackBerry is the ability to add ring tones. In earlier models adding ring tones to your Blackberry was

    • 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

    • Country Direct Numbers

      Country Direct Numbers

      Country Direct numbers are used so that you may connect to an operator from a foreign telephone network, without incurring long distance charges. These numbers may be useful in blue boxing, as many countries still have older switching equipment in use. List of Country Direct Numbers Australia (Telstra) (800)682-2878 Austria (Telecom Austria) (800)624-0043 Belgium (800)472-0032

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