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Standard [CURRENT]

XP Z89-380:1998-04-01

XP I-ETS 300380:1998-04-01

Universal Personal Telecommunication (UPT). Access devices. Dual Tone Multi Frequency (DTMF) sender for acoustical coupling to the microphone of a handset telephone

German title
UNIVERSELLE PERSOENLICHE TELEKOMMUNIKATION (UPT). ANSCHLUSSGERAETE. ZWEITON-MULTIFREQUENZSENDER FUER DIE AKUSTISCHE KOPPLUNG AN DAS MIKROPHON EINES TELEFONS MIT HANDAPPARAT
Publication date
1998-04-01
Original language
French
Pages
12

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Publication date
1998-04-01
Original language
French
Pages
12

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