Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Patent
1997-09-25
2000-03-28
Nguyen, Lee
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
455466, H04B 138
Patent
active
060442786
ABSTRACT:
In a message communication in which communication of message data is effected between a calling terminal and a called terminal connected to each other through an integrated services digital network, control information indicative of message communication is added in the calling terminal to the call setting information transmitted to the integrated services digital network when originating a call to a called terminal; in the called terminal, the call setting information received from the integrated services digital network is analyzed; when it is determined that control information is not added to the call setting information, it switches to a voice mode to effect voice communication with the called terminal after responding to the call setting information; when control information is added to the call setting information, it switches to the message mode to automatically receive message data transmitted from the called terminal after responding to the call setting information.
REFERENCES:
patent: 5335355 (1994-08-01), Tanaka et al.
patent: 5404579 (1995-04-01), Obayashi et al.
Goto Hiroyuki
Miyamoto Ryuichi
Kabushiki Kaisha Toshiba
Nguyen Lee
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