 Basic
network, low send level, push button push
button Trimphone for use on MF signalling systems. Similar to the Telephone
No.766.Note the front of the casing is much higher than an ordinary
Trimphone, because of the size of the circuit board for the keypad.
Introduced in 1977.
Circuit diagram - N886.
Specification - S1340.
Telephone No. 8786
Introduced in 1982, the Telephone No. 8786 was fitted with high impedance
bell coils (4000 ohms) and a Cord Conn No. 4/504 3000mm.
The 8786RR was fitted with a Timed Break Recall button (Register Recall).
Additional Information
| Model |
Mark |
Blue |
Grey |
Green |
PBU |
Introduced |
Remarks |
| Tele 786 |
Mk 1 |
y |
y |
y |
52A/1 |
8/76 |
STC - was 1/766 |
| |
Mk 2 |
y |
y |
y |
52B/1 |
1/80 |
STC - was 1/766 (cost reduced) |
| |
Mk 3 |
y |
y |
y |
52A/2 |
10/78 |
GEC - was 2/766 |
| |
Mk 4 |
y |
y |
y |
52A/3 |
1/79 |
PYE - was 3/766 |
| |
Mk 5 |
y |
y |
y |
52C/1 |
8/79 |
STC - was 4/766 |
| |
Mk 6 |
y |
y |
y |
52B/2 |
2/81 |
GEC |
| |
Mk 7 |
y |
y |
y |
52B/3 |
|
PYE/TMC |
| |
Mk 8 |
y |
y |
y |
52A/4 |
|
PLESSEY |
| |
Mk 9 |
y |
y |
y |
52A/5 |
|
BTF |
| Tele 8786 |
Mk 1 |
y |
y |
y |
7A |
|
GEC |
| |
Mk 2 |
y |
y |
y |
54A/1 |
|
STC |
| |
Mk 3 |
y |
y |
y |
54A/4 |
|
PTL |
| |
Mk 4 |
y |
y |
y |
12A |
|
PYE-TMC |
| |
Mk 5 |
y |
y |
y |
54A/1 |
|
GEC |
| |
Mk 6 |
y |
y |
y |
54A/3 |
|
TMC |
| Tele 8786RR |
Mk 1 |
y |
y |
y |
7A |
|
GEC |
| |
Mk 2 |
y |
y |
y |
54A/1 |
|
STC |
| |
Mk 3 |
y |
y |
y |
54A/4 |
|
PTL |
| |
Mk 4 |
y |
y |
y |
12A |
|
PYE-TMC |
| |
Mk 5 |
y |
y |
y |
54A/1 |
|
GEC |
| |
Mk 6 |
y |
y |
y |
54A/3 |
|
TMC |
How to wire your Telephone No. 786 to make it work on Plug and Socket
|