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=R=F=T=   » ALPHA «   KEY-PAD  TELEPHONE
Have you seen the movie » THE LIFE OF OTHERS « ???
( Original = » Das Leben der Anderen « )
Here is A SECOND ...
" STASI  BUG "   IN  THE  LIVING  ROOM  !!!



... AND so the ROTARY-DIAL Version ...

» ALPHA «  KEY-PAD TELEPHONE   =R=F=T= / GDR (East-)Germany     (1987)
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VEB Fernmeldewerk Nordhausen   Model 550-14007 / ferro   Baujahr 04/87

The IC/Trans. KEY-PAD generates simulated  PULSE DIAL (!) NOT DTMF (*)

=R=F=T=  (= "Rundfunk- u. Fernmelde-Technik") was the  L O G O  of the
association  of different  manufacturer  in the field of communication
technology in the former (East-) "German Democratic Republic" (= GDR).

MORE DETAILS & EXPERIMENTS SEE:  ALPHA-FERRO, Rotary-Dial Version  !!!



R E M A R K S :             NOT (*) DTMF = DUAL-TONE - MULTI-FREQUENCY 
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o The CASE-BOTTOM shows the SAME ID as the Rotary-Dial Version
o The PRINT-BOARD is slight different and HAS AN ID = 2031.580-02005/2
o The SHAPE OF THE HAND-SET is different and it has 4 WIRES to connect
o The PLUG WAS BROKEN and repaired with a piece of KNITTING NEEDLE

               Historical Remarks ...
impressum:
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© C.HAMANN     http://public.beuth-hochschule.de/~hamann      10/09/15