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A vertical service code (VSC) is a sequence of digits and the signals star (*) and pound/hash (#) dialed on a telephone keypad or rotary dial to access certain telephone service features. [1] Some vertical service codes require dialing of a telephone number after the code sequence.
Cell service became publicly available in Chicago on October 13, 1983. The company was a division of Ameritech which, as of January 1, 1984, was the holding company of Illinois Bell , Michigan Bell , Wisconsin Bell , Ohio Bell , and Indiana Bell , which provide landline service to the Great Lakes region.
A wireless home phone service is a service that allows a regular wired telephone to connect to a cellular network, as if it were a mobile phone. [ 1 ] [ 2 ] It is an example of a wireless last mile connection to the public switched telephone network , also known as a wireless local loop .
Local number portability (LNP) for fixed lines, and full mobile number portability (FMNP) for mobile phone lines, refers to the ability of a "customer of record" of an existing fixed-line or mobile telephone number assigned by a local exchange carrier (LEC) to reassign the number to another carrier ("service provider portability"), move it to another location ("geographic portability"), or ...
This list contains the mobile country codes and mobile network codes for networks with country codes between 300 and 399, inclusively – a region that covers North America and the Caribbean. Guam and the Northern Mariana Islands are included in this region as parts of the United States.
Most other numbers listed for ringback are specific to one exchange or one telco; available lists tend to be outdated and unreliable. Many former test numbers (such as 320 and 999 in Bell Canada territory) have been reclaimed for use as standard landline or mobile exchange prefixes, with the test codes moved (usually) to the 958 exchange.
Mobile phones use the same area codes as landline telephones, but the number begins with a "15", added to a string of 6, 7 or 8 digits, just as described above. After the "15", the remainder of the number can start with a 3, a 4, a 5 or a 6. This "15" may be dropped when a call is made to a mobile phone in a different code area.
In many countries, landline service has not been readily available to most people. In some countries in Africa, the rise in cell phones has outpaced growth in landline service. Between 1998 and 2008, Africa added only 2.4 million landlines. [5] In contrast, between 2000 and 2008, cell phone use rose from fewer than 2 in 100 people to 33 out of ...