Australian Army Museum of Western Australia > Records

Telephone Technology - British Post Office SE50 Exchange Switch, 1950s

Subcollections
Communications Gallery - Centenary of Royal Australian Corps of Signals
Overview

British Post Office SE50 Switch developed in the early 1950's. The Telecom Research Labs in Victoria carried out extensive work on improving SE50 performance to suit Australia's relatively unique network.

Historical information

A telephone exchange is built up from self-contained 50-line extension-switching units. An exchange can consist initially of a single switching unit and extended later up to an economic maximum of 400 extensions. When more than two of these units are required, group-selector units are included to ensure full interconnexion between the switching units. Two types of group selector are offered: the first uses uniselectors (limited expansion) and is recommended where it is known that the capacity will not exceed 200 lines; the second (full expansion) uses 2-motion selectors and is used when the capacity may exceed 200 lines.

Details

Details

Registration number
cwa-org-32-54-812
Contextual Information

This technology is located in the Communications Gallery commissioned by the Australian Army Museum of Western Australia as part of the Centenary commemorations of the Royal Australian Corp of Signals. Communication devices used by the Australian Army also are presented in their operational context throughout the Museum.

Australian Army Museum of Western Australia

Australian Army Museum of Western Australia

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