The PRX205 (PRX/A) is a processor controlled reed relay telephone exchange developed by Philips Telecommunicatie Industrie BV (PTI) in Hilversum during the late 1960s and early 1970s. The first public switch was installed in Overvecht in Utrecht in 1972.
The PRX205 (PRX/A) is a processor controlled reed relay telephone exchange developed by Philips Telecommunicatie Industrie BV (PTI) in Hilversum during the late 1960s and early 1970s. The first public switch was installed in Overvecht in Utrecht in 1972.
Source: Wikipedia "PRX (telephony)" · CC BY-SA 4.0
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