No. 202a, sales name Medway, has a capacity of 200 numbers. In all other aspects, is very
similar to Trent.
The following are minor differences compared to Trent:-
The MF4/LD slide switch is between the two PCB and is placed at the front of the unit.
To make an outgoing call, the required memory address is selected by operating the thumb
wheel until the desired name / number is located between the two markers on the window.
The large button is then pressed to initiate call set up and the loudspeaker monitors the
progress of the call. The telephone handset must be lifted once the called party answers.
The volume of the monitor amplifier / loudspeaker is adjustable by a three position switch
on the back of the unit.
Made by Sontranic (CHC Group) Ltd.
Supplied by BT on both rental and sale terms.
"Grandfathered" Approval. i.e. Approved before 1 October 1981.
Approved as supplied for connection to the Public Switched Telephone Networks (PSTN's) and
2-wire PBX extensions.
All units must be sited within easy reach of 240 volt ac 13 amp mains supply and a phone
DESCRIPTION BT Item code
Autodial No. 202A Brown Medway 411066
Autodial No. 202A Grey Medway 411067
Autodial No. 202A Stone Medway 411068
Nickel Cadmium Battery 100 mAh, 3.6 volt PCB mounting 665376
Fuse 73/0.16 (Plug top transformer fuse, not always provided) 314317
Line Jack Unit 10/7A Doubler Jack with Cord. 374422
When originally introduced in 1983, it was considered the main use of the autodiallers
would be as an attachment to PABX extensions. For this reason, the user guide in all cases
refers to the autodiallers as having 18 store memories and not 20. The reason for
marketing in this manner, was that after the customer has entered the PABX access digit
and Pause, they then have 18 usable digits to programme into any memory store.
A unit that displays the symptoms of sending wrong numbers and unable to program is
usually caused by a faulty battery.
To Set the Time and Date:-
1/ Press STO button twice, and keep pressed the second time. This will display an empty
screen for a new unit, or the time and date that requires alteration.
2/ Using the numbered buttons set the time and date. Digits appear on display as you key
them in. Use 24 hour clock i.e. HH. MM. DD. MM. YY.
3/ The clock will continue when you release the STO button.
4/ If you make a mistake, press the CAN button and release STO. Start again from step one.
Storing a number:-
1/ To store a telephone number, use the large thumb wheel to the right of the unit to line
up an appropriate blank space between the arrows on the paper tape for the name, i.e.
2/ Slide up the clear plastic cover over the paper tape and write in the information you
want in pencil on the tape.
3/ Press and Keep Pressed the STO button.
4/ Press and release the large call button to index the memory location, a row of dots
will replace the time and date on the display.
5/ Using the programming Keypad, programme the required telephone number. Up to 18 digits.
The digits will appear on the display as they are keyed in. When connected to a PABX that
requires a Pause after the Access Digit, Press button 'A' once.
6/ Release the STO button.
Note:- That unless Medway is set for MF4 signalling by an engineer at installation, the *
and # buttons have no function. There is no soft switching from LD to MF4 by pressing the
* button as with most modern equipment.
To call a stored number:-
1/ Select the required number by use of the large thumb wheel by lining up the number/name
required on the tape between the 2 arrows on the window. Then press and release the large
(Call) button without lifting the telephone handset. You will hear Dial Tone via the
loudspeaker monitor and as the call progresses the digits will appear on the display as
they are dialled. The volume of the monitor loudspeaker can be adjusted by the three
position switch at the rear of the unit.
2/ When the call is answered, lift the telephone handset to speak. The display will then
show a count of seconds and minutes until the call is terminated. The display will then
revert to the time and date.
If at any time before the handset is lifted you wish to cancel the call, press the CAN
button, this will release the call.
Should you wish to switch back to the monitor during a call, press and keep pressed the
MON button until the telephone handset is replaced. You can switch between the monitor
speaker and handset as often as you like during a call, including incoming calls or calls
dialled from the telephone.
Certain types of PABX do not signal the public exchange dial tone, e.g. Monarch 120. In
this case when storing numbers, do not programme a pause after the access digit. The
continue (CON) button, if pressed will allow the callmaker to continue dialling in the
absence of continuous dial tone.
Reprogramming an address store automatically over writes the previous number. To clear a
store, line up the store to be cleared between the arrows of the window, press and keep
pressed the STO button, press the large button once and then release the STO button.
LJU 10/7A cord connections for all autodials is as follows:-
p p 6 5 4 3 2 2 1
2 1 A
9.5 volt ac Blk Wht Grn Blu Or Red sp
Note:- If for any reason all 6 cord conductors are required for through connection such as
when used on a PMBX 2/... , then strap terminals 4 & 6 (Black & Green) within the
- NC (Normally Connected) Used for pulse signalling.
Pulse shape & Bell shunt circuit connected.
- NO (Normally Open) Used for MF4 signalling.
Pulse shape & bell shunt circuit disconnected.
- Link 70 / 140. Set to 70 (MF4 tone duration in ms).
Setting 140 is only required on some old type equipment.
- Slide Switch. Loop Disconnect Pulsing or MF4 signalling.