CT6000 Moneybox Payphone

Rathdown BABT S/1000/3/E/450712

BT ITEM CODE 870131

British Telecom Inphone moneybox

See also http://www.britishtelephones.com/moneybox.htm

This Payphone does not need meter pulses or reversals on the exchange line, the microphone is muted untill the A button is pressed when the 10p coin is sent to the money box, and the LCD starts to display the number of seconds left before another coin is inserted.

Ringer

The Payphone has an Electronic ringer in a compartment of its own in the base.

Your 2 Shillings are inserted in the left most 10p slot

The coin drops into the coin measure / holding unit.

The 10p lifts the silver coloured lever , which is detected by the emitter detector pair, The LCD display changes from COIN to DIAL.

HANDSET 16

The Handset looks like a Herald's Handset 16 http://www.britishtelephones.com/hands16.htm

Ear APB R9 Z600, Mic APB M9 Z600

KKA 19,KKA 17 2, 16

KEYSWITCH

The Key to lift the lid to empty the cash box, also acts as a mode switch, two microswitches detect which of four positions the key is in.

Turning the key to the 9 o'clock position releases the lid

At the 12 o'clock position the key can be removed and the phone is a payphone

At the 2 'o'clock position the phone is in owner mode, calls can be made without inserting cash

At the 3 o'clock position the phone can be programmed

A Mercury Tilt switch detects that the unit is on a flat surface

The back of the main circuit board also has many of the other through hole components

The front of the PCB has the LCD and the Hitatchi HD44795 -4 bit micro and LCD driver Surface mount IC

The battery connectors are isolated from the rest of the phones circuitry when the battery compartment lid is removed.

The back of the lid looks like this ...

Identification