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2. FreeConferenceCall.com - Wikipedia

   en.wikipedia.org/wiki/FreeConferenceCall.com

   [3] [5] The LECs were permitted to charge interexchange carriers such as AT&T Wireless, Verizon Communications, and Sprint to connect incoming calls to conference call numbers and would split the revenue generated from this increased traffic with FreeConferenceCall.com. [3] [6] [7] With the explosion of the first free conference provider post 9 ...

3. Mobile Telephone Switching Office - Wikipedia

   en.wikipedia.org/wiki/Mobile_Telephone_Switching...

   The Mobile Telephone Switching Office (MTSO) is the mobile equivalent of a PSTN Central Office. The MTSO contains the switching equipment or Mobile Switching Center (MSC) for routing mobile phone calls. It also contains the equipment for controlling the cell sites that are connected to the MSC. The systems in the MTSO are the heart of a ...

4. Google Voice - Wikipedia

   en.wikipedia.org/wiki/Google_Voice

   A Google Voice local phone number for incoming calls is currently available only for users in the United States. [13] Users may select a single U.S. phone number from various area codes, free of charge to each account. Incoming calls to the number may ring simultaneously any of the user's configured phones or the account's Google Talk feature ...

5. FBI investigating AT&T breach exposing all cellphone ... - AOL

   www.aol.com/news/t-says-hackers-stole-records...

   Hackers stole six months' worth of call and text message records of nearly every AT&T cellular network customer, the company said Friday, a breach that has the potential to reveal sensitive ...

6. Toll-free telephone number - Wikipedia

   en.wikipedia.org/wiki/Toll-free_telephone_number

   A toll-free telephone number or freephone number is a telephone number that is billed for all arriving calls. For the calling party, a call to a toll-free number from a landline is free of charge. A toll-free number is identified by a dialing prefix similar to an area code. The specific service access varies by country.

7. Enhanced 911 - Wikipedia

   en.wikipedia.org/wiki/Enhanced_911

   Enhanced 911 ( E-911 or E911) is a system used in North America to automatically provide the caller's location to 911 dispatchers. 911 is the universal emergency telephone number in the region. In the European Union, a similar system exists known as E112 (where 112 is the emergency access number) and known as eCall when called by a vehicle.

8. List of mobile virtual network operators in the United States

   en.wikipedia.org/wiki/List_of_mobile_virtual...

   Mobile virtual network operators (MVNOs) in the United States lease wireless telephone and data service from the three major cellular carriers in the country, AT&T Mobility, T-Mobile US, and Verizon. [ 1 ] [ 2 ] In 2016, MVNOs across the nation such as Metro PCS , Boost Mobile , Cricket Wireless , and TracFone brands served about 36 million ...

9. Long-distance calling - Wikipedia

   en.wikipedia.org/wiki/Long-distance_calling

   Long-distance calling. In telecommunications, a long-distance call (U.S.) or trunk call (also known as a toll call in the U.K. [citation needed]) is a telephone call made to a location outside a defined local calling area. Long-distance calls are typically charged a higher billing rate than local calls. The term is not necessarily synonymous ...