The Autodial No 106A, sales name TD Callmaker, was a compact electronic callmaker, capable of storing up to 31 telephone numbers (up to 16 digits each, including PABX access digits). Any of the pre-recorded numbers can be called automatically by pressing the appropriate address button. An integral keypad was used to program the electronic memory and it may also be used to dial any other numbers. A number called manually from the integral keypad is automatically stored and can be repeated by pressing the `last number dialled' button.

The TD Callmaker is available in off-white or in a simulated wood and black finish. Although it is designed for desk-top use, it can be wall mounted. It measures approximately 21.59 cm x 14.3 cm x 7.62 cm and weighs about 0.79 kg.

The Callmaker was associated with a telephone instrument and powered from a PO Power Unit 53. In case of power failure, an internal battery protects the memory store for up to 72 hours.

Trailed in early 1979 and available on rental terms only.  Introduced in 1979.

Taken from New Product Bulletin 4/79

3 Internal
Issue 1, July 1979

Description and Installation

This instruction describes the 10 pulses per second Autodial No. 106A which enables customers connected to automatic exchanges to call other frequently used numbers without the necessity of remembering or dialling the telephone numbers. To call other customers either the keypad of the autodial or the normal telephone can be used.

The Autodial 106A is a solid state automatic number instrument with dial pulse output, that can be used with any dial or push button telephone with loop disconnect pulsing and is contained in a simulated wood case with a choice of white or black keypad and address buttons. It can be free standing on a desk or table, or wall mounted on a wall bracket - the advice note will indicate whether a wall bracket is required.


  • Automatic dialling of up to 31 stored telephone numbers.
  • Repeat of last number keyed from the Autodialler.
  • Manual keypad dialling facility.
  • PBX comparability - where wait for second dialling tone is required.
  • Digit capacity of 16 digits.
  • Storage address capacity of 31.

Power unit No. 53B and an integral battery pack emergency power source. The customer will have to provide a 250 V power point WHICH WILL HAVE TO BE TESTED IN ACCORDANCE WITH TI A2 E1006.

(143 x 214 x 76) mm. (8.5 x 5.5 x 3) in.
 Weight 1.36 kg (3 lb.)

The controls on the face of the Autodialler consist of the following.

  • Address buttons - for addressing telephone number memory locations. Four of these are separately located for calling special numbers.
  • Button 32 (bottom right with a small pip) allows for automatic repeat of the last manually dialled number from the Autodialler.
  • 2 push buttons (Record ON and Record OFF) for initiating or terminating a recording operation.
  • A keypad with 10 buttons for manually keying or recording the digits 1-0.
  • 1 push button (Wait) - used when making calls requiring a wait for second dial tone (PABXs).
  • 1 push button (Cancel) - used to cancel a number storing operation.
  • 1 Power Lamp.
  • 1 Record Lamp.


  • Autodial No. 106A including Battery Pack - Rate Book item code 373148 for Black, 373149 for White.
  • Battery Secondary No. 26
  • Block Terminal No. 35.
  • Power Unit No. 53B.
  • Plug for socket outlet No. 103 (mains plug).
  • Mounting Autodial No. 1A - Item 373295 for Black or 373294 for White.

It is envisaged that Autodial No. 106A will be installed mainly on DELs or Extensions. If attachment to Plan 105, 107, 1A, 4, or anything other than a direct line is required, reference should be made to TMk2.6.4.

Connection to telephones 706, 746, 722 or equivalent is shown in Appendix 1.

Do not apply power or install the battery until all the connections are complete. The battery should not be installed until the Autodial is ready for use and connected to the power source, otherwise it will gradually discharge.


  • Switch on the power - check that the "AC" power lamp lights.
  • Press and release the Record ON button and note that the Record ON lamp lights.
  • Lift the handset - Record lamp goes out.
  • To Test Digits 1-0 Use the dial on the telephone to contact the test desk.
  • Ask for a test of digits 1-0.
  • Use the keypad buttons 1-0 on the Autodial to pulse 1-0 to the test desk.
  • Clear down.
  • To test the address stores with the handset "ON".
  • Press and release the Record "ON" button.
  • Press and release one of the 31 address buttons.
  • Store a convenient test number by using the dialling buttons Note 1.
  • Press and release the Record OFF button.
  • Continue testing on a random 9 of the remaining Call Buttons.
  • Then lift the handset, wait for dial tone, press one of the 10 selected buttons - the Autodial pulses out (Note 2) the stored number. If the call is successful, clear down and continue making calls on the remaining selected address buttons until all the selected call buttons have been tested.
Erase the stored test numbers as follows:
  1. Press and release the Record "ON" button.
  2. Press and Release the appropriate address button.
  3. Press and Release Wait button.
  4. Press and Release Record OFF button, continue 9.15.1 to 9.15.7 for all the remaining address buttons with the stored test numbers.
  5. Test the erase feature by lifting the receiver.
  6. Press and release any of the address buttons used in 9.10 and 9.13.
  7. Verify that no pulsing sound is heard in the receiver and no call is made.

NOTE 1 - When recording a number that used an access digit, use the following sequence in keying:

(a) Key the access digit.

(b) Press and release the "Wait" button.

(c) Key the remainder of the number.

NOTE 2 - If an access number was recorded the automatic dialling will stop, listen for the second dial tone, then momentarily depress the selected address button again to complete the dialling.

The battery to support the address memory consists of 4 nickel cadmium cells contained in a proprietary plastic battery box it functions as an emergency power supply only, and total degradation of the battery may cause it to short circuit the system. If the unit fails to operate properly remove the battery and test the unit. If it still does not function properly, refit the battery. If it does work, renew the battery pack.

If a unit fails to function properly, do not attempt to perform any on site repairs, but exchange the unit.

The field trial item was made by the American Telecommunications Corporation model E-05, which was called the Teledialer 32.


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Last revised: February 10, 2022