THE TOUCH TONE PHONE » H1 - LX « HEIBL / DEUTSCHE TELEKOM (1989) ********************************************************************* This nice telephone has Transistors, ICs & buzzer inside. The KEY-PAD generates DTMF (= DUAL-TONE-MULTI-FREQUENCY ) used in modern Tel.Nets or can be set to produce PULSE-DIAL ( IWV ) used in old Tel.Nets ... If the telephone came with IWV, than it can be set to MFV ... [A] TEMPORARY: [B] via HARDWARE ... A LOOK INSIDE: Setting ( >>>> ) SWITCH = down = MFV / IWV = up German Terminology: --------------------------------------------------------------------- Pulse-Dial / German: "IWV" = ImpulsWahlVerfahren Tone-Dial / German: "MFV" = MehrFrequenzVerfahren Have a look at »Tel-0164« ... Historical Remarks ... impressum: ********************************************************************* © C.HAMANN http://public.BHT-Berlin.de/hamann 09/07/23 |