International Telecommunications Public Correspondence Service (ITPCS) is an
International Telecommunication Union
The International Telecommunication Union is a specialized agency of the United Nations responsible for many matters related to information and communication technologies. It was established on 17 May 1865 as the International Telegraph Unio ...
(ITU) proposal for allocation of
country code ''991'' for use in some form of individual-based international numbering plan.
The service may have been intended for
ENUM
Telephone number mapping is a system of unifying the international telephone number system of the public switched telephone network with the Internet addressing and identification name spaces. Internationally, telephone numbers are systematic ...
trials, as the ITU allocated the range ''991 001'' to
Neustar for use in trial in 2002. However, the most recent approved ENUM trial, with
Telesoft Technologies
Telesoft Technologies is a privately held UK based technology company which develops cyber security, telecoms mobile products and services and government infrastructure. Telesoft has operations in USA, UK and India.
Products
Its Cyber Security ...
's Sentiro, was allocated space in the
Universal personal telecommunications
Universal personal telecommunications (UPT) is a special segment of the international telephone number space which has been set aside for universal personal telephone numbers. This service has been allocated country code +87810 and is completed ...
(UPT) range (country code 878). No other allocations have been reported in 991.
Application templates addressed to the ITU for
E.164
E.164 is an international standard (ITU-T Recommendation), titled ''The international public telecommunication numbering plan'', that defines a numbering plan for the worldwide public switched telephone network (PSTN) and some other data network ...
shared country codes and identification codes require descriptions of the "Public Correspondence Service" to be provided with those codes.
[http://www.itu.int/ITU-R/terrestrial/docs/mars/coast/ListIV-CP.pdf ]
References
International Telecommunication Union
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