H - Electricity – 04 – M
Patent
H - Electricity
04
M
H04M 11/00 (2006.01) H04M 1/253 (2006.01) H04M 1/27 (2006.01) H04Q 11/04 (2006.01)
Patent
CA 2058399
Disclosed is an ISDN terminal system which can automatically select one exchange method according to terminal equipments to communicate with. The ISDN terminal system 1 which can selectively adopt the line exchange or packet exchange comprises an analyzing section 203 for analyzing a call setup message received from the ISDN 3 to recognize the exchange mode designated by the calling terminal equipment, and exchange mode selecting sections 213, 103, 107 and 109 for selectively adopt either one of the line exchange or the packet exchange according to the exchange mode recognized by the analyzing section. The system further comprises an input section 11 for inputting compacted telephone numbers, a memory section 15 for previously registering telephone numbers previously determined according to the compacted telephone numbers and the previously determined exchange modes, reading sections 209 and 207 for reading the previously registered telephone number and exchange mode from the storing section in response to the inputted compacted number, transmitting sections 201 and 105 for forming a call setup message including information indicative of the read telephone number and exchange mode and transmitting the formed message to the ISDN 3, and exchange mode selecting sections 213, 103, 107, and 109 for selectively adopt either one of the line exchange or the packet exchange according to the read exchange mode.
Fetherstonhaugh & Co.
Kabushiki Kaisha Toshiba
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