TELEPHONE No. 785 & 8785


Basic network, low send level, push button, wall type telephone with provision for four button switches and two lamps in the case.

Wall version of  Telephone No. 784.

Introduced in 1979 the Telephone No. 8786RR was fitted with a Timed Break Recall button (Register Recall).  The telephone is fitted with a Kit-CP100, which is a small circuit board and whose use and circuit diagrams are covered in Specification S1376.

Introduced around 1978.

Introduced in 1983, the Telephone No.  8785 was fitted with a Bell No. 59D-1 (high impedance bell coils 4000 ohms) and a Cord Connection No. 4/502 250mm.

Circuit diagram - N885 (Telephone No. 785) and N8885 (Telephone No. 8785).

Specifications - S1289 (Telephone No. 785) and S1492 (Telephone No. 8785).


Additional Information
Model Mark Grey Introduced PBU No Remarks
Tele 785 Mk 1 y 9/77 7E or F GEC
Tele 785 Mk 2 y 6/78 54A STC
Tele 785 Mk 3 y 9/80 56A/4 PLESSEY
Tele 785 Mk 4 y 2/79 11A PYE/TMC
Tele 785 Mk 5 y 9/81 56A/2 GEC
Tele 785 Mk 6 y 2/81 56A/3 TMC
Tele 785 Mk 7 y 9/81 56A/1 STC
Tele 785 Mk 8 y 3/82 56A/5 BTF
Tele 785 Mk 9 y   56B/4 PLESSEY
Tele 785 Mk 10 y 8/82 56B/3 TMC
Tele 785 Mk 11 y 3/82 56B/2 GEC
Tele 785RR Mk 1 y   7E or F GEC
Tele 785RR Mk 2 y   54A STC
Tele 785RR Mk 3 y   56A/4 PLESSEY
Tele 785RR Mk 4 y   11A PYE/TMC
Tele 785RR Mk 5 y   56A/2 GEC
Tele 785RR Mk 6 y   56A/3 TMC
Tele 785RR Mk 7 y   56A/1 STC
Tele 785RR Mk 8 y   56A/5 BTF
Tele 785RR Mk 9 y   56B/4 PLESSEY
Tele 785RR Mk 10 y   56B/3 TMC
Tele 785RR Mk 11 y   56B/2 GEC

 


 

 
 
BACK Home page BT/GPO Telephones Search the Site Glossary of Telecom Terminology Quick Find All Telephone Systems

Last revised: February 12, 2025

FM