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Mobile telephone numbers. [1] [2] In Vietnam, mobile phone numbers follow the format 09x-xxxxxxx or new prefixes: 03x, 05x, 07x, 08x. The first 0 is the trunk code. The next 2 digits ( 3x, 5x, 7x, 8x or 9y) specify the mobile phone operator. Some mobile phone operators have been given more than one operator code. In Circular No. 22/2014/TT ...
Telephone numbers listed in 1920 in New York City having three-letter exchange prefixes. In the United States, the most-populous cities, such as New York City, Philadelphia, Boston, and Chicago, initially implemented dial service with telephone numbers consisting of three letters and four digits (3L-4N) according to a system developed by W. G. Blauvelt of AT&T in 1917. [1]
Phoneword. Many telephone keypads have letters with the numbers, from which words can be formed. Sign in Argentina giving the number 0800 555 8736 as 0800 555 TREN. Phonewords are mnemonic phrases represented as alphanumeric equivalents of a telephone number. [1] In many countries, the digits on the telephone keypad also have letters assigned.
These letter assignments have been used for multiple purposes. Originally, they referred to the leading letters of telephone exchange names.In the mid-20th century United States, before the switch to All-Number Calling, telephone numbers had seven digits, including a two-digit prefix which was expressed in letters rather than digits, e.g.; KL5-5445.
Zone 1 uses an integrated numbering plan; four digits (1xxx) determine the area served in Canada, the United States and its territories, and much of the Caribbean. Zone 2 uses two 2-digit codes (20, 27) and eight sets of 3-digit codes (21x–26x, 28x, 29x), mostly to serve Africa , but also Aruba , Faroe Islands , Greenland and British Indian ...
a group of three to five characters, which characters can be a combination of capital letters in Romancharacter and/or Arabic numbers Marshall Islands: V7 [3] V7-0001 to V7-9999 Martinique: F-O [16] Outside mainland France is F-OAAA to F-OZZZ [g] [16] Mauritania: 5T [3] 5T-AAA to 5T-ZZZ Mauritius: 3B [3] 3B-AAA to 3B-ZZZ. Colonial allocation VQ ...
A USB-pluggable hardware true random number generator. In computing, a hardware random number generator (HRNG), true random number generator (TRNG), non-deterministic random bit generator (NRBG), [1] or physical random number generator [2] [3] is a device that generates random numbers from a physical process capable of producing entropy (in other words, the device always has access to a ...
A telephone number serves as an address for switching telephone calls using a system of destination code routing. [1] Telephone numbers are entered or dialed by a calling party on the originating telephone set, which transmits the sequence of digits in the process of signaling to a telephone exchange. The exchange completes the call either to ...