TELEPHONES FOR
BT AMBASSADOR & SENATOR SYSTEMS

Telephones used on the BT Ambassador and  Senator telephone systems.

Telephone No's 8520 & 8550
Standard LD (10PPS) telephone.
Supplied in the colours Brown and Stone.

Telephone No's 8521, 8551 & 8553
LD (10PPS) with 10 address repertory dialling.
Because of it's memory facility the phone was labelled XpressCaller.
Supplied in the colours Brown and Stone.

The standard telephone was also known as the TX41 and the memory telephone as the TX42.

Top picture is a Telephone No. 8520 in Brown.

 

 

 

 

Picture to the right is a Telephone No. 8551 in Stone.

 
Telephone No. 8530
Standard MF telephone

 
Facility Handsets

Handset No. 16B was used on Telephone No's 8550, 8551 and 8553.

Handset No. 16A was used on Telephone No's 8520, 8521 and 8530.  Facility Handsets No's 16C & 16E can be used only on these telephones.
Telephone No. 8560
Superseded the above telephones and was known as the Ambassador/Senator 10.

Light Grey and dark Grey colours.
Telephone No. 8561
As the Telephone No. 8560 but with full hands free working.  The loud speech button is mechanically latching.

Known as the Ambassador/Senator Super 10.

Light Grey and dark Grey colours.

Power block style PSU is 15 volt DC at 150ma (2.25va).

 
 
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Last revised: April 26, 2023

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