ERICSSON TELEPHONE No. N1002


Automatic Telephones

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N 1002 Type

This, the most modern and improved automatic table telephone is embodied in a moulded Bakelite case.

The design is distinctive and pleasing and incorporates a form of cradle or micro-telephone rest which is not readily damaged.

The interior apparatus including a magneto bell is mounted on a frame which can be removed as a unit, so that the sets are self-contained.

There is a sliding instruction tray with directory pad accommodation combined in the base plate. Pads are easily inserted and are included only when ordered.

The reception and transmission efficiencies of the Bakelite micro-telephone with inset transmitter and detachable receiver are vastly superior to the solid-back type, and the anti-side-tone induction coil in the circuit reduces the reproduction of extraneous noises and side-tone to a minimum. Terminal blocks have raised ribs to minimise surface leakage.

If required, a radio interference suppression unit can be supplied, for which provision for fitting exists in each set.

This telephone is normally produced in black, but if specially ordered it can be supplied in Chinese Red, Ivory or Jade Green.

N1002A27T was supplied in a Mottled Walnut finish.

Instruments can also be obtained without the sliding tray fitment.

Micro-telephone cord N4021
Inset N7752
Mouthpiece N8634
Receiver N6819
Earpiece N4443
Receiver diaphragm N4400
Terminal block cord N4317

Overall dimensions 9.25 x 8.25 x 6 inches

Weight 6 lb.

Ericsson Standard Telephones

Code No.   Description  
N1002A Black Bakelite with sliding tray and non-director dial  
N1002L   Black Bakelite with sliding tray and director area dial  
N1002H  Black Bakelite without sliding tray, with non-director dial (H6 variant is diagram N72136)  

British Post Office Variants

Code No.   Description   P.O. No.
N1002B   Black Bakelite with sliding tray and non-director dial   332F
N1002M   Black Bakelite with sliding tray and director area dial   332L
N1002B20   Black Bakelite with sliding tray, with non-director dial   332F Mk2A
N1002M20 Black Bakelite without sliding tray, with director dial 332L Mk2A

Australian Variants

Ericsson  No. APO No. Colour Features
N1002K 332AT BLACK DRAWER
N1003K20 332AT BLACK DRAWER
N1002K21 332AT BLACK DRAWER
N1002K22 332AT IVORY DRAWER
N1002K23 332AT BLACK DRAWER
N1002K24 332AT IVORY DRAWER
N1002K25 332AT IVORY DRAWER & CARRYING HANDLE
N1002K26 332AT BLACK DIE CAST BASE

 

Other different variations on the N1002 were made for the world and home market.

Introduced around 1938.

Taken from the Ericsson catalogue, edition No. 49


How to convert a N1002H54T to work in the UK (Diagram N56352)

This conversion requires a UK Telephone Line Cord, a 3.3K Resistor and a Rectifier Element.

  1. Remove any existing line cord.
  2. Remove the link between Terminals 10 and 11.
  3. Remove any link between Terminals 1 and 2.
  4. Insert a 3.3K Resistor between terminals 1 and 2.
  5. Connect the white wire of a UK line cord to Terminal 1.
  6. Ensure there is a link between terminals 11 and 12.
  7. Ensure there a link between Terminals 8 and 9.
  8. Connect the red wire of a UK line cord to Terminal 9.
  9. Connect the blue wire of a UK line cord to Terminal 12.
  10. Insulate the green wire on the UK line cord.
  11. Connect the Rectifier Element between Terminals 5 and 6.

Ericsson made the N1002 in many variants.  The basic telephone was the same but there were minor modifications made to suit different customers.

An unusual model is the N1002K25 shown here which was supplied to the Australian Post Office as their 332AT .  Note the carrying handle.
 


Additional Pictures

Model N1002H54T
 
Model N1002H54T front view
 
Model N1002H54T - Close up of the air vent
 
Model N1002H54T - internal view
 
Model N1002H54T - Paster diagram

 


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Last revised: October 03, 2016