Postal, telegraph and telephone service

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A postal, telegraph, and telephone service (or PTT) is a government agency responsible for postal mail, telegraph, and telephone services. Such monopolies existed in many countries, though not in North America or Japan. Many PTTs have been partially or completely privatised in recent years. In some of these privatisations, the privatised corporation was completely renamed, such as KPN in the Netherlands, Orange S.A. in France (+ Orange Polska in Poland), BT Group in the United Kingdom, Eir in the Republic of Ireland, Swisscom in Switzerland, Telstra in Australia, Spark in New Zealand, Proximus Group in Belgium, A1 Telekom Austria Group in Austria, TDC Group in Denmark, Telia Company in Sweden and Finland, Telenor in Norway, Chunghwa Telecom in Taiwan and Singtel in Singapore; whereas in others, the name of the privatised corporation has been only slightly modified, such as Telkom Indonesia in Indonesia, Telekom Malaysia in Malaysia, Deutsche Telekom in Germany, Kosovo Telecom in Kosovo, KT in South Korea, Post Luxembourg in Luxembourg and Síminn in Iceland.