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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]
Canadian pressure laws, Acts, rules & regulations are enforced by provincial and territorial safety authorities. Unlike the United States where licensed professional engineers may stamp pressure equipment and pressure system/plant drawings in the non-nuclear sectors for construction, in Canada in general a professional engineer who is not employed by a safety authority does not have that same ...
Direct-distance dialing (DDD) was first introduced in areas with common-control switching (panel and crossbar) in the 1950s.These areas had used 411 for directory assistance, and because of the ability of common-control switching to analyze the initial digits of a number in a "sender" before routing the call, these areas did not require the dialing of an initial 1 to initiate a long-distance call.
An emergency telephone number is a number that allows a caller to contact local emergency services for assistance. The emergency number differs from country to country; it is typically a three-digit number so that it can be easily remembered and dialed quickly.
The prefixes in the Americas start with one of 1,2,5. All countries in the Americas use codes that start with "5", with the exception of the countries of the North American Numbering Plan, such as Canada and the United States, which use country code 1, and Greenland and Aruba with country codes starting with the digit "2", which mostly is used by countries in Africa.
Canadian Steamship Lines: Industrials Marine transportation Montreal: 1845 Cargo shipping Canadian Tire: Consumer goods Tires Toronto: 1922 Retail Canadian Tire Bank: Financials Consumer financing Oakville: 2003 Credit card company, part of Canadian Tire: Canadian Western Bank: Financials Banks Edmonton: 1988 Banking Canadian Wheat Board ...
In early 2011, a routine analysis by the Canadian Numbering Administrator (CNA) revealed that area code 306 had experienced an unforecasted surge in telephone number allocation and was at risk of exhaustion within three years (a situation referred to as a "jeopardy condition"). [2] In response, the CRTC immediately initiated relief planning ...
Canadian singles charts were compiled by RPM from 1964 to 2000 and The Record from 1983 to 1996. Nielsen SoundScan compiled charts from 1996 to the present; Billboard's Canadian Hot 100 , compiled from Nielsen SoundScan and Nielsen Broadcast Data Systems , has been published on a weekly basis since 2007.
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