PABX Info
Here are some PABX details. More may be added later. Files are pdf of approx 1 to 2Mb each page.

Private Automatic Branch Telephone Exchange - PABX No.3 and 3R
PABX No.3 and 3R

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PABX No. 4 Info...

PABX No. 4 leaflets and more...

Click on the image opposite to go to the PABX 4 leaflet page






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