|AUTOMATIC OR C.B. GENERAL SERVICE (1000)
These telephones, known as "1000 type" because of their suitability for lines of up to 1000 ohms loop resistance, are the complete answer to modern needs. They are efficient in operation, shapely and compact, and are made in the following colours to suit any scheme of interior decoration.
SINGLE COLOUR TELEPHONES
A dial finger-plate of stainless steel instead of coloured plastic can be provided for any telephone.
On C.B. telephones the dial dummy is the same colour as the handset.
High transmission efficiency is achieved by using a new type handset containing a rocking-armature receiver in conjunction with a closed-iron-circuit type of anti-side-tone induction coil.
The handset has a more hygienic mouthpiece than those of earlier types and is shaped for maximum comfort and clarity of speech.
Through ventilation of the telephone is provided via gauze-screened metal ventilation cups inserted one on each side of the case. These cups are also useful as finger grips when lifting the instrument and are coloured to match the handset.
The internal apparatus is mounted on the metal base which has rubber feet and is secured by four captive screws to the case. Removal of the case allows access to all parts for maintenance.
Cradle-switch springs are operated by twin plungers bearing on rollers attached to a hinged plate.
The trigger dial of the auto set has standard numbering and impulse ratios unless otherwise ordered.
Desk and handset cords enter the case via a rubber protector. They have p.v.c. insulated conductors and a close braided cover. All connecting wires are p.v.c. insulated.
Line connections are made at screw terminals in a moulded desk terminal block of the same colour as the telephone case.
Orders for these telephones should quote Type No. and colour reference letter, e.g., N1025A(a).
Similar telephones with push buttons can be supplied for extension, etc., schemes.
Taken from the Ericsson catalogue No. 55
To convert an N1025A1T (Diagram N89943) to UK Plug and socket working
The terminals are labelled A1 to A7 on the left of the phone and 1 to 7 on the right.
N1025A2T - Base plate
Last revised: December 22, 2023