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Browse Prior Art Database

LOW COST DATA TRANSMISSION WITH DTMF FOR MOBILE RADIOS

IP.com Disclosure Number: IPCOM000007415D
Original Publication Date: 1995-Mar-01
Included in the Prior Art Database: 2002-Mar-25
Document File: 1 page(s) / 40K

Publishing Venue

Motorola

Related People

Jochen Karasch: AUTHOR [+2]

Abstract

To transmit short numeric or alphanumeric mes- coupling to the standard microphone. sages use a standard DTMF terminal (e.g. German PTT, price less 300.-DM) with the possibility to con- The DTMF message will be displayed on any nect direct to the microphone-port or by acoustic radio with a DTMF decoder display.

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MOIOROLA Technical Developments Volume 24

March 1995

LOW COST DATA TRANSMISSION WITH DTMF FOR MOBILE RADIOS

by Jochen Karasch and Werner Jiirgen Zundel

To transmit short numeric or alphanumeric mes- coupling to the standard microphone. sages use a standard DTMF terminal (e.g. German

PTT, price less 300.-DM) with the possibility to con- The DTMF message will be displayed on any nect direct to the microphone-port or by acoustic radio with a DTMF decoder display.

MC 2100 with DTMF decode!

1' antenna

alternativly

'

z encoder

speaker

154 e Motorola,

Inc. ,995

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