Toll-free number portability

number portabilityported to any carrier
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.wikipedia
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Toll-free telephone number

toll-freetoll-free number800 number
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.
The practice is nonetheless potentially problematic as it leaves local businesses advertising numbers which they do not own and for which they therefore have no number portability.

Phoneword

mnemoniclettersphone word
Vanity numbers, such as phonewords or short 13- series shared-cost service numbers, are made available by auction.
A toll-free number, instead of indicating a geographic location, was merely a pointer to a database record; any number could geographically be reassigned anywhere and ported to any carrier.

RespOrg

responsible organizationResponsible Organizations (Resp Orgs)
The system was redesigned in 1981 to use a database, the SMS/800 service management system, which could direct any toll-free number to any destination based on various conditions; number prefixes remained tied to specific carriers until a RespOrg (responsible organisation) structure was introduced in 1993 (US) and 1994 (Canada) to allow subscribers to change providers by providing a Letter of Authorisation (LOA) on company letterhead to their new provider authorising a number to be moved.
RespOrgs were established in 1993 as part of a Federal Communications Commission order instituting toll-free number portability.

Somos, Inc.

Number Administration and Service Center
The system was redesigned in 1981 to use a database, the SMS/800 service management system, which could direct any toll-free number to any destination based on various conditions; number prefixes remained tied to specific carriers until a RespOrg (responsible organisation) structure was introduced in 1993 (US) and 1994 (Canada) to allow subscribers to change providers by providing a Letter of Authorisation (LOA) on company letterhead to their new provider authorising a number to be moved.
RespOrg and toll-free number portability

Local number portability

number portabilityportedport
Similar schemes exist in many countries for local number portability and mobile number portability, although implementation details for each portability scheme varies between countries.

Mobile number portability

number portabilitycarry their original phone number with a new providerMNP
Similar schemes exist in many countries for local number portability and mobile number portability, although implementation details for each portability scheme varies between countries.

Australian Communications and Media Authority

ACMAAustralian Broadcasting TribunalACA
ACA fixed a November 2000 implementation date for the provision of local rate and freephone number portability.

Vanity number

Vanity Numbers
Vanity numbers, such as phonewords or short 13- series shared-cost service numbers, are made available by auction.

Shared-cost service

+808Business numbersshare call costs
Vanity numbers, such as phonewords or short 13- series shared-cost service numbers, are made available by auction.

United Kingdom

British🇬🇧UK
United Kingdom numbers in the 0800 range (BT Freefone) first became portable in June 1997.

BT Group

BTBritish TelecomBritish Telecommunications
United Kingdom numbers in the 0800 range (BT Freefone) first became portable in June 1997.

Cable & Wireless plc

Cable & WirelessCable and WirelessEastern Telegraph Company
Previously, rival carriers used differing area codes, 0800 for BT Freefone and 0500 for Cable & Wireless Freecall numbers.

Germany

🇩🇪GermanGER
Germany, Netherlands, Sweden and Belgium also introduced portability schemes in the late 1990s.

Netherlands

Dutch🇳🇱the Netherlands
Germany, Netherlands, Sweden and Belgium also introduced portability schemes in the late 1990s.

Sweden

🇸🇪SwedishSWE
Germany, Netherlands, Sweden and Belgium also introduced portability schemes in the late 1990s.

Belgium

🇧🇪BelgianBEL
Germany, Netherlands, Sweden and Belgium also introduced portability schemes in the late 1990s.

Wide Area Telephone Service

InWATSWATS WATS lines
In the original InWATS service, introduced in 1967, there was no number portability.

Bell Canada

BellBCEBell Telephone Company of Canada
Each exchange prefix in the +1-800 area code was assigned to a specific carrier in a specific region (for instance, +1-800-387 was Bell Canada in Toronto) and the numbers were brought to subscribers (usually large companies or governmental organisations) on special fixed-rate inbound trunks.

Toronto

Toronto, OntarioToronto, ONToronto, Canada
Each exchange prefix in the +1-800 area code was assigned to a specific carrier in a specific region (for instance, +1-800-387 was Bell Canada in Toronto) and the numbers were brought to subscribers (usually large companies or governmental organisations) on special fixed-rate inbound trunks.

Toll-free telephone numbers in the North American Numbering Plan

1-800 numbers833888
The toll-free long distance market was opened to competition after 1986 and a RespOrg system instituted in 1993 to provide toll-free number portability between rival carriers using the SMS/800 database.

J2 Global

j2 Global Communicationsj2 Global Inc.JFAX
While the impact of the j2 Global acquisition is unknown, other companies acquired by j2 have been the target of frequent consumer complaints regarding sales tactics, inflated fees to cancel the service and toll-free number portability issues.

Long-distance calling

long distancelong-distancelong distance call
This smart network was further refined to provide toll-free number portability in the 1990s.

Telephone number portability

Toll-free number portability - telephone number portability for freephone subscribers.