TABLE AUTOMATIC TELEPHONE
Plastic cased table table telephone for use on automatic exchanges.
These were generally used on Private Automatic Exchanges (PAX) in the UK.
Circuit diagram No. 532771 (Model L11750A7).
Although looking somewhat similar to the GPO Telephone No. 706 this telephone was completely different internally. The circuitry is actually based on the principles of the GPO 300 type telephone.
It is thought that this model was introduced to use up telephone 300 type components, that were now redundant, due to the introduction of the GPO Telephone No. 706.
The differences externally to the GPO Telephone No. 706 were the ATE dial, round plungers and a plug ended line cord.
The case is removed by releasing the two screws under the handset.
This telephone is also known as the A.T.E. Model No. 6 -
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Externally the ATE dial is the only difference
The case has a metal clamp (left), a 300 type telephone induction coil and
the bell is a single gong.
The chassis frame is fixed by four screws to the telephone base and this
also supports the dial,
The original BT line cord is called a Cord Connecting No 4/502.
Last revised: June 01, 2021