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A toll-free telephone number or freephone number is a telephone number that is billed for all arriving calls. For the calling party, a call to a toll-free number from a landline is free of charge. A toll-free number is identified by a dialing prefix similar to an area code. The specific service access varies by country.
A telephone numbering plan is a type of numbering scheme used in telecommunication to assign telephone numbers to subscriber telephones or other telephony endpoints. Telephone numbers are the addresses of participants in a telephone network, reachable by a system of destination code routing. Telephone numbering plans are defined in each of the administrative regions of the public switched telephone network (PSTN) and in private telephone networks.
Telephone numbers in Hong Kong are mostly eight-digit. Fixed land line numbers start with 2 or 3, mobile (cellular) phone numbers with 5, 6, 7 or 9, pager numbers with 7 and forwarding service with 8. Since the end of 1989, there have been no area codes within Hong Kong.
The Big Number Change addressed various issues with the telephone dialling plan in the United Kingdom, during the late-1990s and early-2000s.
Numbers on the Irish telephone numbering plan are regulated and assigned to operators by ComReg.
Telephone numbers in Cyprus follow a closed telephone numbering plan which was adopted on 1 December 2001. As a result, for landline phone numbers the digit 2 followed by the old area code was affixed to the subscriber number and for mobile phones 9 was affixed to the phone number. The plan is also used in Akrotiri and Dhekelia.
The dialling plan for mobile networks and new landline operators is closed; all subscriber numbers must be dialled in full. For landline numbers starting with 02, the dialling plan used to be open; the trunk digit and area code could be omitted if the caller was in the same area code as the callee. However, starting May 3, 2008, all landline numbers must be dialled in full.
The expansion of the North American Numbering Plan (NANP) is an anticipated requirement to provide more telephone numbers to accommodate future needs beyond the pool of ten-digit telephone numbers in use since the inception of the NANP in 1947. An October 2020 analysis estimated that the current numbering plan would not be exhausted until after the year 2050.
Telephone numbers in Europe are managed by the national telecommunications authorities of each country. The country calling codes start primarily with 3 and 4, however, some countries that by the Copenhagen criteria are considered part of Europe have country codes from the Asia range, starting with 9.
The format of telephone numbers in Australia has changed over time to allow for the expansion of the subscriber base as technology has improved.
Telephone numbers in the Philippines follow an open telephone numbering plan and an open dial plan. Both plans are regulated by the National Telecommunications Commission, an attached agency under the Department of Information and Communications Technology (DICT).
Telephone numbers in Italy are managed by the Autorità per le Garanzie nelle Comunicazioni (AGCOM), a national regulatory authority for the communication industry located in Rome.
Telephone numbers in the United Arab Emirates (UAE) follow a closed telephone numbering plan. The UAE is assigned an international dialing code of +971 by ITU-T. Telephone numbers are fixed at seven digits, with area codes fixed at two or three digits.
Telephone numbers in Pakistan are ten digits long. Landline numbers and mobile numbers have different structures. Geographically fixed landline are prefixed by an area code which varies in length depending on the significance of the place. Mobile numbers are prefixed (03) followed by a code indicating the telephone operator. The international country code for Pakistan is '+92'.
Uruguay's calling code is +598. Since 2010, national long distance calling was eliminated, thus there are no area codes in each city.
0114 is the national dialling code for Sheffield in the United Kingdom. The area it serves includes almost all of the City of Sheffield and some adjacent areas. When STD codes were first introduced, Sheffield was assigned the mnemonic 0SH2, later changing to the corresponding numbers upon the introduction of All-Figure Dialling in the area. Instead of the expected 01742 code, Sheffield's area code changed to the current 0114 code on 16 April 1995, along with 4 other cities in England, as part of PhONEday. All subscriber numbers within the area code consist of seven digits. The code is used at several telephone exchanges as part of a linked numbering scheme. In common with all other British area codes the initial '0' is a trunk prefix that is not required when dialling Sheffield from abroad.
Telephone numbers in Kazakhstan are regulated under the auspices of the Telecommunications Committee of the Ministry of Digital Development, Innovations, and Aerospace Industry in the Republic of Kazakhstan. They are administered by telecommunication providers, notably Kazakhtelecom, a state-backed and the largest national operator.
North Macedonia's telephone numbering plan is the system used for assigning telephone numbers in North Macedonia. It is regulated by the Agency for Electronic Communications (AEK), which holds responsibility for telecommunications.
Telephone numbers in the United Kingdom have a flexible structure that reflects their historical demands, starting from many independent companies through a nationalised near-monopoly, to a system that supports many different services, including cellular phones, which were not envisaged when the system was first built. Numbers evolved in a piecemeal fashion, with numbers initially allocated on an exchange-by-exchange basis for calls connected by manual operators. Subscriber numbers reflected demand in each area, with single digit telephone numbers in very rural areas and longer numbers in cities.
References
- ↑ "Cameroon's New Telephone Numbering Scheme will Increase Available Numbers from 80 to 800 million - AfrICT (Africa ICT)". www.africt.com.
- ↑ "Cameroon 2007 expansion". www.wtng.info.
- 1 2 "Cameroon 2004 mobile expansion". www.itu.int.
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