NR BR 1623
Weatherproof Loud Speaking Telephone for Use on the Trackside
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| Organization: | NR |
| Publication Date: | 18 July 1989 |
| Status: | active |
| Page Count: | 12 |
scope:
This Specification details the requirements for a weatherproof Ioudspeaking telephone which may be indirectly connected to British Rail's Private Branch Network.
The intended application will be to enable drivers of trains to communicate with signalmen without leaving their cab.
Document History
NR BR 1623
July 18, 1989
Weatherproof Loud Speaking Telephone for Use on the Trackside
This Specification details the requirements for a weatherproof Ioudspeaking telephone which may be indirectly connected to British Rail's Private Branch Network.
The intended application will be to...
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