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International Packet Switched Service
 
 
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The International Packet Switched Service (IPSS) was created in 1978 by a collaboration between the United Kingdom's General Post Office, Western Union
Western Union

The Western Union Company is a financial services and communications company based in the United States. Its North American headquarters is at Englewood, Colorado, and its international marketing and commercial services headquarters are in Montvale, New Jersey....
 International, and the United States' Tymnet
Tymnet

Tymnet was an international data communications network headquartered in San Jose, California, California that utilized virtual call packet switched technology and used X.25, Systems Network Architecture/Synchronous Data Link Control, ASCII and Binary Synchronous Communications interfaces to connect host computers at thousands of large compa...
. This network grew from Europe
Europe

Europe is, conventionally, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally divided from Asia to its east by the water divide of the Ural Mountains, the Ural , the Caspian Sea, and by the Caucasus Mountains to the southeast....
 and the USA to cover Canada
Canada

Canada is a country occupying most of northern North America, extending from the Atlantic Ocean in the east to the Pacific Ocean in the west and northward into the Arctic Ocean....
, Hong Kong
Hong Kong

Hong Kong , officially the Hong Kong Special Administrative Region, is a territory located in Southern China in East Asia, bordering the province of Guangdong to the north and facing the South China Sea to the east, west and south....
 and Australia
Australia

Australia, officially the Commonwealth of Australia, is a country in the southern hemisphere comprising the Australia of the world's smallest continent, the major island of Tasmania, and numerous list of islands of Australia in the Indian Ocean and Pacific Oceans....
 by 1981, and by the 1990s it provided a worldwide networking infrastructure.

Companies and individual users could connect in to the network, via a PSS (Packet Switch Stream
Packet Switch Stream

In the United Kingdom, PSS, was an X.25-based packet-switched telecommunications network, provided by the British Post Office Telecommunications and then British Telecom from 1980, onwards....
) modem
Modem

Modem is a peripheral device that modulation an analog carrier wave Signal to encode digital information, and also demodulation such a carrier signal to decode the transmitted information....
, or an X.25
X.25

X.25 is an ITU-T standard network layer protocol for Packet switched network wide area network communication. An X.25 WAN consists of Packet switching nodes as the networking hardware, and leased lines, Plain old telephone service connections or ISDN connections as physical links....
 PAD (Packet Assembler/Disassembler
Packet Assembler/Disassembler

A packet assembler/disassembler, abbreviated PAD is a communications device which provides multiple asynchronous serial communication terminal connectivity to an X.25 network or host computer....
), and a dedicated PSS line, and use it to connect to a variety of online databases and mainframe systems. There was a choice of about three different speeds of PSS lines, and a faster line was more costly to rent.






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The International Packet Switched Service (IPSS) was created in 1978 by a collaboration between the United Kingdom's General Post Office, Western Union
Western Union

The Western Union Company is a financial services and communications company based in the United States. Its North American headquarters is at Englewood, Colorado, and its international marketing and commercial services headquarters are in Montvale, New Jersey....
 International, and the United States' Tymnet
Tymnet

Tymnet was an international data communications network headquartered in San Jose, California, California that utilized virtual call packet switched technology and used X.25, Systems Network Architecture/Synchronous Data Link Control, ASCII and Binary Synchronous Communications interfaces to connect host computers at thousands of large compa...
. This network grew from Europe
Europe

Europe is, conventionally, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally divided from Asia to its east by the water divide of the Ural Mountains, the Ural , the Caspian Sea, and by the Caucasus Mountains to the southeast....
 and the USA to cover Canada
Canada

Canada is a country occupying most of northern North America, extending from the Atlantic Ocean in the east to the Pacific Ocean in the west and northward into the Arctic Ocean....
, Hong Kong
Hong Kong

Hong Kong , officially the Hong Kong Special Administrative Region, is a territory located in Southern China in East Asia, bordering the province of Guangdong to the north and facing the South China Sea to the east, west and south....
 and Australia
Australia

Australia, officially the Commonwealth of Australia, is a country in the southern hemisphere comprising the Australia of the world's smallest continent, the major island of Tasmania, and numerous list of islands of Australia in the Indian Ocean and Pacific Oceans....
 by 1981, and by the 1990s it provided a worldwide networking infrastructure.

Companies and individual users could connect in to the network, via a PSS (Packet Switch Stream
Packet Switch Stream

In the United Kingdom, PSS, was an X.25-based packet-switched telecommunications network, provided by the British Post Office Telecommunications and then British Telecom from 1980, onwards....
) modem
Modem

Modem is a peripheral device that modulation an analog carrier wave Signal to encode digital information, and also demodulation such a carrier signal to decode the transmitted information....
, or an X.25
X.25

X.25 is an ITU-T standard network layer protocol for Packet switched network wide area network communication. An X.25 WAN consists of Packet switching nodes as the networking hardware, and leased lines, Plain old telephone service connections or ISDN connections as physical links....
 PAD (Packet Assembler/Disassembler
Packet Assembler/Disassembler

A packet assembler/disassembler, abbreviated PAD is a communications device which provides multiple asynchronous serial communication terminal connectivity to an X.25 network or host computer....
), and a dedicated PSS line, and use it to connect to a variety of online databases and mainframe systems. There was a choice of about three different speeds of PSS lines, and a faster line was more costly to rent.