Choke exchange
Encyclopedia
A choke exchange is a telephone exchange
designed to limit the effect of high numbers of simultaneous call attempts to that exchange. The choke exchange is connected to other exchanges in such a way that even high call volume will be handled through the "choke" connection rather than overwhelming the rest of the local telephone network. Typical phone numbers on choke exchanges include radio station contest lines and event ticket vendors.
Examples of choke exchanges in North America have included:
Telephone exchange
In the field of telecommunications, a telephone exchange or telephone switch is a system of electronic components that connects telephone calls...
designed to limit the effect of high numbers of simultaneous call attempts to that exchange. The choke exchange is connected to other exchanges in such a way that even high call volume will be handled through the "choke" connection rather than overwhelming the rest of the local telephone network. Typical phone numbers on choke exchanges include radio station contest lines and event ticket vendors.
Examples of choke exchanges in North America have included:
- (202)Area code 202Image:Area code 202.svg|right|The area colored red indicates the geographical region of the District of Columbia, served by area code 202poly 0 50 49 54 103 84 111 88 101 107 118 130 143 139 179 140 211 188 238 203 260 240 259 248 248 250 255 262 253 357 1 357 Area codes 571 and 703poly 1 1 0...
432-#### in Washington, DC - (213)Area code 213North American area code 213 is a Californian telephone area code which contains downtown Los Angeles and its immediate environs. It was one of California's original three area codes created in October 1947 and has historically been associated with Southern California and Los Angeles.Originally,...
520-#### and (818) 520-#### in Los Angeles, CaliforniaLos ÁngelesLos Ángeles is the capital of the province of Biobío, in the commune of the same name, in Region VIII , in the center-south of Chile. It is located between the Laja and Biobío rivers. The population is 123,445 inhabitants... - (312)Area code 312Area code 312 is the telephone area code for the Chicago Loop and surrounding areas of the city of Chicago, Illinois. Prior to the split on November 11, 1989, forming 708 , 312 area code originally served much of Greater Chicago...
591-#### in Chicago, Illinois - (313)Area code 313Area code 313 is the telephone area code serving the city of Detroit, Michigan, the city's innermost enclave cities , and Dearborn, Redford and Grosse Pointe...
298-#### in Detroit, MichiganDetroit, MichiganDetroit is the major city among the primary cultural, financial, and transportation centers in the Metro Detroit area, a region of 5.2 million people. As the seat of Wayne County, the city of Detroit is the largest city in the U.S. state of Michigan and serves as a major port on the Detroit River... - (415)Area code 415North American Area code 415 is the Californian telephone area code for San Francisco and its northern suburbs .-History:415 was one of the original three area codes in California, established in 1947...
478-#### in San Francisco, CaliforniaSan Francisco, CaliforniaSan Francisco , officially the City and County of San Francisco, is the financial, cultural, and transportation center of the San Francisco Bay Area, a region of 7.15 million people which includes San Jose and Oakland... - (416) 870-#### and (416) 872-#### in Toronto, Ontario
- (614)Area code 614Area code 614, which had covered the entire southeastern quarter of the state of Ohio for decades, now represents only the Columbus metropolitan area; it is one of the original area codes established in 1947. In 1998, most of the old 614 territory was split into the new area code 740...
821-#### in Columbus, OhioColumbus, OhioColumbus is the capital of and the largest city in the U.S. state of Ohio. The broader metropolitan area encompasses several counties and is the third largest in Ohio behind those of Cleveland and Cincinnati. Columbus is the third largest city in the American Midwest, and the fifteenth largest city... - (513)Area code 513The area code 513 serves southwest Ohio including Cincinnati and its many suburbs, such as the cities of Forest Park, Hamilton, Lebanon, Mason, Middletown, Norwood, Oxford, and Trenton; it is one of the original area codes established in 1947. It formerly covered a larger area of Southwestern...
749-#### in Cincinnati, OhioCincinnati, OhioCincinnati is a city in the U.S. state of Ohio. Cincinnati is the county seat of Hamilton County. Settled in 1788, the city is located to north of the Ohio River at the Ohio-Kentucky border, near Indiana. The population within city limits is 296,943 according to the 2010 census, making it Ohio's... - (514) 790-#### in Montreal, Quebec
- (585)Area code 585Area code 585 is a state of New York telephone area code and was created in 2002 for use in the city of Rochester, New York and surrounding areas. Previously 716 was used for the area now in 585. Area Code 716 was shared with Buffalo and much of western New York, until numbers in that area code...
222-#### in Rochester, New YorkRochester, New YorkRochester is a city in Monroe County, New York, south of Lake Ontario in the United States. Known as The World's Image Centre, it was also once known as The Flour City, and more recently as The Flower City... - (604) 280-#### in Vancouver, British Columbia
- (613)Area code 613Area code 613 are area codes for Ottawa and surrounding Eastern Ontario, Canada. 613 is one of the 86 original area codes of North America assigned in October 1947...
750-#### in Ottawa, Ontario - (704)Area code 704Area code 704 covers Metropolitan Charlotte, in the Piedmont region of North Carolina, and also the cities of Gastonia, and Concord. Area code 980, created as an overlay in 2001, also covers the same area. The South Carolina side of the Charlotte metropolitan area is part of area code 803.704 is...
570-#### in Charlotte, North CarolinaCharlotte, North CarolinaCharlotte is the largest city in the U.S. state of North Carolina and the seat of Mecklenburg County. In 2010, Charlotte's population according to the US Census Bureau was 731,424, making it the 17th largest city in the United States based on population. The Charlotte metropolitan area had a 2009... - (714)Area code 714North American area codes 657 and 714 are Californian telephone area codes which encompass northern Orange County, a portion of Los Angeles County, and portions of Chino Hills in San Bernardino County...
977-#### in Orange County, CaliforniaOrange County, CaliforniaOrange County is a county in the U.S. state of California. Its county seat is Santa Ana. As of the 2010 census, its population was 3,010,232, up from 2,846,293 at the 2000 census, making it the third most populous county in California, behind Los Angeles County and San Diego County...