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DTMF HANDSHAKING PROTOCOL FOR DIAL-UP PAGER TERMINALS

IP.com Disclosure Number: IPCOM000006025D
Original Publication Date: 1990-Oct-01
Included in the Prior Art Database: 2001-Nov-27
Document File: 1 page(s) / 63K

Publishing Venue

Motorola

Related People

Gerald Talton: AUTHOR [+2]

Abstract

Telephone accessible pager terminals enable a human caller to page an individual through the use of wmputer- generated voice or custom-tone prompting. However, these two methods need not be exclusive or custom. Instead of using one method or the other, these prompting methods could be mixed so that a human or computer could dial up the terminal and handshaking could be obtained by either user on the same telephone line. An example where this is important would be a computer controlled voice synthesizer or voice mail system using voice store and forward to an individual pager user.

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MO7VROLA Technical Developments Volume 11 October 1990

DTMF HANDSHAKING PROTOCOL FOR DIAL-UP PAGER TERMINALS

by Gerald Talton and Chip Wood

   Telephone accessible pager terminals enable a human caller to page an individual through the use of wmputer- generated voice or custom-tone prompting. However, these two methods need not be exclusive or custom. Instead of using one method or the other, these prompting methods could be mixed so that a human or computer could dial up the terminal and handshaking could be obtained by either user on the same telephone line. An example where this is important would be a computer controlled voice synthesizer or voice mail system using voice store and forward to an individual pager user.

   Traditionally, if a computer wished to access a terminal, there would be a separate terminal modem line, that would be used for handshakable computer access to the terminal. Through the use of DTMF tone prompting for data on the human line, the computer could verify if the terminal is on the line by successfully decoding a DTMF tone. The pager terminals selection of DTMF tones could also be used to indicate the status of the pager terminal or the type of pager terminal that the computer is accessing. An example of the use of a DTMF tone prompt would be the dial-up pager terminal prompting the user with, "At the tone, enter pager number. < DTMF tone > ." The human user would know the terminal is on-line and ready for input because it can hear the...