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The Trimline base was available in desk-top and wall-mount versions. The handsets and bases were interchangeable. The Trimline was the first US telephone to achieve design recognition in Europe, where it was referred to as the "Manhattan" model or the "Gondola". [citation needed] Today, similarly designed telephones are sold by many companies ...
The most notable examples of telephones constructed from the handset mountings, are the model 102 and the model 202 telephones, variants which differed in their electric circuitry, with improvements of speech performance. In addition, the type C, and later type G, handset mountings were small wall-mounted units for hanging up the handset.
The model 554 was a wall-mounted version. Other special-purpose models included additional features. This included phones with dial lights (500U), party line sets (501), keysets (540 and 560 series), call directors, panel phones (750 series), industrial and outdoor phones (520 and 525), and automatic dialers (660). [8]
Candlestick telephones featured a mouthpiece (transmitter) mounted at the top of the stand, and a receiver (earphone) that was held by the user to the ear during a call. When the telephone was not in use, the receiver rested in the fork of the switch hook protruding to the side of the stand, thereby disconnecting the audio circuit from the ...
Previous telephones required the user to operate a separate switch to connect either the voice or the bell. With the new kind, the user was less likely to leave the phone "off the hook". In phones connected to magneto exchanges, the bell, induction coil, battery, and magneto were in a separate bell box called a "ringer box". In phones connected ...
In earlier telephones, the transmitter was mounted directly on the telephone itself, which was attached to a wall at a convenient height or placed on a desk or table. Until the advent of the cordless telephone , the handset was usually wired to the base unit, typically by a flexible tinsel wire cord.
Wall-mounted Type 121 GPO telephone and writing desk. Both were based around the same handmade, wooden case, containing the telephone circuit and bell. The Type 121 had the transmitter mouthpiece screwed onto the front of the box and the switch hook, holding the receiver, protruding from the left hand side.
A Trimphone, viewed from the side. The handset cradle functioned as a carrying handle when the receiver was off the hook, and the coiled cord in theory allowed the phone to be carried around. The Trimphone is a model of telephone designed in the early 1960s in the UK, the first prototypes appearing in 1965.
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