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The first emergency number system to be deployed anywhere in the world was in London on 30 June 1937 [2] [3] using the number 999, and this was later extended to cover the entire country. [2] When 999 was dialed, a buzzer sounded and a red light flashed in the exchange to attract an operator's attention. [3]
A telephone numbering plan is a type of numbering scheme used in telecommunication to assign telephone numbers to subscriber telephones or other telephony endpoints. [1] Telephone numbers are the addresses of participants in a telephone network, reachable by a system of destination code routing.
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The first use of a national emergency telephone number began in the United Kingdom in 1937 using the number 999, which continues to this day. [6] In the United States, the first 911 service was established by the Alabama Telephone Company and the first call was made in Haleyville, Alabama, in 1968 by Alabama Speaker of the House Rankin Fite and answered by U.S. Representative Tom Bevill.
112, or one-one-two is the emergency telephone number across the European Union (EU), United Kingdom (UK - where it works parallel to 999), and other non-EU countries, and on Global System for Mobile Communications (GSM) mobile telephone networks across the world.
Business support systems (BSS) are the components that a telecommunications service provider (or telco) uses to run its business operations towards customers. Together with operations support systems (OSS), they are used to support various end-to-end telecommunication services (e.g., telephone services). [ 1 ]
Technical support, commonly shortened as tech support, is a customer service provided to customers to resolve issues, commonly with consumer electronics. This is commonly provided via call centers , online chat and email . [ 1 ]
Girls Planet 999 is a South Korean reality television show, where trainees from China, [a] Japan and South Korea competed to debut in a nine-member girl group. [1] The 99 contestants formed three large groups, consisting 33 contestants from each nationality.