This page links to diagrams. Drawings and diagrams are also
linked from
the pages they are associated with i.e. a telephone No. 706 drawing or
circuit diagram would be linked from
the Telephone No. 706 page.
If a drawing or circuit is missing or not
linked on a page, then it is not
available on this site at this time, but can be requested.
 DIAGRAM
INFORMATION - Description of the diagram system including a list of all the BPO diagram prefix's
DIAGRAM
SYMBOL INFORMATION - How to identify the symbols on the diagrams
DIAGRAM
SPREADSHEET - (Excel Spreadsheet format)
N DIAGRAMS
Q DIAGRAMS
Here is a short list of the most requested diagram types:-
AT - AUTOMATIC TELEPHONE EXCHANGE EQUIPMENT
FA - WIRING DIAGRAMS (FIRE SYSTEMS)
N - DIAGRAMS (TELEPHONES & PBX)
PA - WIRING DIAGRAMS (POLICE SYSTEMS)
Q - DIAGRAMS LIST (HES AND ITS)
RP - REPEATER STATION EQUIPMENT
SA - WIRING DIAGRAMS (SUBSCRIBER APPARATUS)
T - WIRING DIAGRAMS (TESTING)
TG - WIRING DIAGRAMS (TELEGRAPHS)
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