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In the early 1980s, Bell Labs received a patent for what became AT&T's "Advanced 800 Service", a computer-controlled system where any toll-free number could point to any destination number, such as to a small business local number instead of a special InWATS line, and an itemized bill generated only for the calls the business actually received.
The system was redesigned in 1981 to use a database, the SMS/800 service management system, which could direct any toll-free number to any destination based on various conditions; number prefixes remained tied to specific carriers until a RespOrg (responsible organization) structure was introduced in 1993 (US) and 1994 (Canada) to allow ...
Worldwide distribution of country calling codes. Regions are coloured by first digit. Telephone country codes, but also sometimes referred to as country dial-in codes, or historically international subscriber dialing (ISD) codes in the U.K., are telephone number dialing prefixes for reaching subscribers in foreign countries or areas via international telecommunication networks.
Calls are free for all fixed line calls. Mobile carriers AIS and CAT (60+%o f Thailand's subscribers) offer 1-800 service for cell phones. DTAC and True mobile providers currently [when?] do not, but it is expected they will offer the 1-800 service for subscribers by late 2009. [needs update] In Turkey, the prefix for toll-free numbers is "0800".
The second largest mobile network coverage in Mongolia 98xxxxxx: G-Mobile: The newest mobile network of Mongolia 99xxxxxx: Mobicom Corporation: The first Mongolian cellphone operator Montenegro +382: 60: 8: Revolucija, VMNO under MTEL CG: 63: Telenor Montenegro: 66: Volim, VMNO under T-Mobile: 67: T-Mobile: 68: MTEL CG: 69: Telenor Montenegro ...
Find us on X (formerly known as Twitter) or Facebook. Paid members In addition to the support options listed above, paid members also have access to 24/7 phone support by calling 1-800-827-6364.
T-Mobile US, Inc. is an American wireless network operator headquartered in Bellevue, Washington. Its majority shareholder and namesake is the German telecommunications company Deutsche Telekom. T-Mobile is the second largest wireless carrier in the United States, with 130 million subscribers as of December 31, 2024. [6]
A RespOrg, or responsible organization, is a company that maintains the registration for individual toll-free telephone numbers in the North American Numbering Plan by means of the distributed Service Management System/800 database.