Method and system for recognizing call switch-over from...

Details Method and system for recognizing call switch-over from... Method and system for recognizing call switch-over from...

2003-12-12

2009-10-27

Kincaid, Lester (Department: 2617)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S332000, C370S328000, C370S338000

Reexamination Certificate

active

07609675

ABSTRACT:
The system in accordance with the present invention recognizes in real time that a call connection of a hybrid access terminal be switched over to a 1X system, by sending an inquiry message inquiring the hybrid access terminal of whether the hybrid access terminal has received voice signal or a low-rate data signal and by receiving a confirmation message that the hybrid access terminal has received the voice signal or the low-rate data signal from a mobile switching center, if a low-level signal below a prescribed level is received from the hybrid access terminal while counting time initiated from a point of a call drop while the hybrid access terminal is being provided with a multimedia service.

REFERENCES:
patent: 2003/0152049 (2003-08-01), Turner
patent: 2002-171572 (2002-06-01), None
patent: 2002-0002204 (2002-01-01), None
patent: 2003-0035040 (2003-05-01), None
patent: 2003-0050864 (2003-06-01), None
International Search Report for Application No. PCT/KR2003/002722, dated Mar. 9, 2004.

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