International Packet Switched Service
（重定向自International Packet Switch Stream）
The International Packet Switched Service (IPSS) was created in 1978 by a collaboration between the United Kingdom's General Post Office, Western Union International and the United States' Tymnet.
This network grew from Europe and the USA to cover Canada, Hong Kong and Australia by 1981, and by the 1990s it provided a worldwide networking infrastructure.