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History
Packet Switch Stream
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Packet Switch Stream (PSS) was a public data network in the United Kingdom, provided by British Telecommunications (BT). It operated from the late 1970s through to the mid 2000s.
BT KiloStream equipment in a telephone exchange in 2004
BT KiloStream equipment in a telephone exchange in 2004
Public data network
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A public data network (PDN) is a network established and operated by a telecommunications administration, or a recognized private operating agency, for the specific purpose of providing data transmission services for the public.
Representatives of PTTs and private companies who championed the development of X.25-based networks and services in Europe, North America and Japan.
Representatives of PTTs and private companies who championed the development of X.25-based networks and services in Europe, North America and Japan.