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WOODEN  KEY-PAD  PHONE  PTT-TRUB (1986)
( !!! Attention:  SWISS  Wire/WESTERN-Connections are different !!! )



WOODEN  KEY-PAD PHONE  ( ART 11-104867-002.02 ) GFELLER / PTT-TRUB (1986)
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The IC/Trans. KEY-PAD  generates simulated  PULSE DIAL (!)  NOT DTMF  (*)
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Text adapted from »ICONIC-Antiques« / Bristol, UK ...
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   < iconic-antiques.com >

  "1970s Gfeller Trub Wood Telephone,
   made by Gfeller, Bern Switzerland, 1977, often referred to as the
   'King of Phones', was fashioned from a single piece of hardwood and
   available in 3 grains; Rosewood, Cherry and Maple. Originating from
   the Gfeller company of Switzerland in the early 70's, the combination
   of sleek, streamlined styling and solid hardwood with a pronounced
   grain make it a real pleasure to handle. The offset matt gold buttons
   and modern typeface work in complete harmony with the phones modern
   lines ... The Gfeller Trub achieved cult status in the late 1980s,
   especially in Britain with most now hidden away in private collections.
   The Trub phone has been entered into the Museum of Applied Arts and
   Sciences (MAAS) in Australia in recognition of its enduring design
   and unique use of materials."

R E M A R K S :    (R)-Key = "REPEAT" (= send LAST NUMBER again )
                   (O)-Key = "E-Key"  (= Hold/Transfer)-Option

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A LOOK INSIDE:

    

This is a SWISS-Telephone  !!!  It is NOT WORKING with a GERMAN SOCKET,
You need an ADAPTER-CABLE ...
  

1st) R E M A R K S   to  the   (! not symmetric !)   SWISS-CONNECTION ...
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The LEFT DIAGRAM counts CONTACT 1...6 of the "BIG" WESTERN-"Line"-Socket,
   RIGHT DIAGRAM counts CONTACT 1...4 to the "normal" WESTERN-"4"-Socket:
in "normal" 4-Notation:
   ====================      USA:  a = (2), b = (3)
                         TELEKOM:  a = (1), b = (4)
                           SWISS:  a = (1), b = (2)
                             
   to activate the TRUB-RINGER, you have to connect  a = W  (1 = 3)

2nd) R E M A R K S :  HAND-SET-CONNECTIONS with SMALL-WESTERN-4-Pin-Plug:
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TELEKOM = USA (1 & 4) = Microphone-    SWISS (1 & 3) = Microphone-Capsule
              (2 & 3) = Telephone-           (2 & 4) = Telephone-Capsule

                        PTT-TRUB  E X P E R I M E N T ...
                        Historical Remarks ...

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(*) This vintage KEY-PAD TELEPHONE use  "PULSE-DIALING".  To make it work
in your application, YOU MAY NEED A  "PULSE-TO-TONE-CONVERTER"...

impressum:
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© C.HAMANN          http://public.BHT-Berlin.de/hamann           09/12/22