PABX No. 3 Pictures

The GPO were not allowed to install any large PABX installation, so this was left to approved PABX suppliers.  The GPO/BT however, had to maintain the equipment once installed and connected to the Network.

The PABX 3 was installed by Ericsson/Plessey, GEC, TMC & STC.

Click here for Plessey PABX No. 3

Click here for GEC PABX No. 3


pabx3sw.jpg (45164 bytes)

5 position suite with cable turning section on right hand side


pabx3sw1.jpg (42229 bytes)

4 position suite


pabx3_2.jpg (28043 bytes)

The apparatus rooms in Luton Police Station.
These were recovered around 1987 when they were replaced by a Digital PABX.
Rectifier and test set shown in middle of picture with the MDF to the right.

50 line extn rack on left with a 100 line extn rack on right.
Note on nearest rack - Only one final selector on the top row - this an enquiry selector.
The row below this are finals selectors.
First selectors are on the bottom row with line finders above.


Switchboards at the Board of Trade (Dated 1962)
Switchboards at the London Stock Exchange (Dated 1970)


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Last revised: December 16, 2020