Telephone station with pulse dialling and a DTMF signalling device

作者： Leistner Rudolf

DOI:

关键词: Tone (musical instrument) 、 Pulse (music) 、 Local loop 、 Signalling 、 Directory number 、 Electrical engineering 、 Ringing 、 Engineering

摘要: The invention relates to a telephone station with pulse dialling and additional DTMF transmitting/receiving devices. It is the object display directory number of calling on immediately after call received. This achieved by fact that end ringing tones subscriber line detected tone detector at this means transmitted memory called without disturbing voice connection DTMF. information then displayed aid conversion device. application intended for sets added features.

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