Telephonic communications – Telephone line or system combined with diverse electrical... – Having transmission of a digital message signal over a...
Patent
1989-05-11
1992-04-28
Dwyer, James L.
Telephonic communications
Telephone line or system combined with diverse electrical...
Having transmission of a digital message signal over a...
379216, 379 93, H04M 1100
Patent
active
051094061
ABSTRACT:
A communication switching system is disclosed which includes a plurality of telephone sets and data terminals connected to an exchange. The data terminals have corresponding telephone sets. Other telephone sets operate independently. Information regarding the correspondence of the data terminals to the telephone sets is stored in the exchange. The telephone sets related to the data terminals initiate connection through the exchange of one data terminal to another data terminal. The telephone sets control the connection by the exchange using a two key sequence. The exchange controls the connection in accordance with data terminal/telephone set corresondence data stored in the exchange.
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Hasegawa Iwao
Mano Hiroshi
Yabu Koichiro
Dwyer James L.
Kabushiki Kaisha Toshiba
Woo Stella L.
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