ERICSSON
TELEPHONE No. N1002
 

Automatic Telephones

n1002.jpg (10695 bytes) n1002x.jpg (15924 bytes)

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.

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 Supplied 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 (Black), supplied to Telephone Rentals
N1002H05 Black Bakelite without sliding tray, with non-director dial, supplied to Telephone Rentals
N1002H35 Black Bakelite without sliding tray, with Arabic dial
N1002HZ Black Bakelite without sliding tray, with non-director dial (Stainless), supplied to Telephone Rentals


British Post Office Variants

Code No. Description P.O. No.
N1002B Black Bakelite with sliding tray and non-director dial 332F
N1002H Black Bakelite with no tray (ETL Diagram N53649) 332 Mk1
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

N1002H, N1002H05, N1002H74 and N1002HZ - Were black in colour and supplied to Telephone Rentals.

N1002A27T - Supplied in a Mottled Walnut finish.

N1002H35 MOD - Supplied with an Arabic dial.

N1002H81T - Ivory coloured and tropicalised. It has a vent plate in front of the handset.

N1002H54T - coloured green and the suffix 'T' means it is tropicalised, so it has mesh over the bell sound holes in the base, a vent in front of the handset and a varnished Induction Coil (see pictures below).

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

Introduced around 1938.

Taken from the Ericsson (ETL) Telephone Catalogue, edition No. 49 (With additional information added)

How to convert a N1002H54T to work in the UK
(Diagrams N56352 & N53649)

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

  1. Remove and discard any existing line cord.
  2. Remove any 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 N56352/3
 
Model N1002H35
 
 
 
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Last revised: June 15, 2023

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