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Toll-free number portability
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Toll-free number portability : ウィキペディア英語版
Toll-free number portability

Toll-free number portability (Canada, US, New Zealand) or freephone number portability (Australia, UK) allows the subscriber of a freephone number to switch providers while retaining the same number for incoming calls. Similar schemes exist in many countries for local number portability and mobile number portability, although implementation details for each portability scheme varies between countries.
== Australia ==
ACA fixed a November 2000 implementation date for the provision of local rate and freephone number portability. The industry established a body, Industry Number Management Services (INMS) Ltd, to allocate individual numbers and administer the centralised reference database of all allocated local rate and freephone numbers.〔http://www.acma.gov.au/webwr/telcomm/telephone_numbering/8_digit_numbering/finalreport.rtf〕
Vanity numbers, such as phonewords or short 13- series shared-cost service numbers, are made available by auction.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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