Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2006-07-25
2006-07-25
Feild, Joseph (Department: 2681)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S450000, C455S452100, C455S452200, C455S466000
Reexamination Certificate
active
07082309
ABSTRACT:
A method for providing a call processing service wherein a short message can be transmitted to another party using a signaling channel in cases where a traffic channel cannot be allocated (for example, in traffic congestion state). The method comprises allowing a mobile switching center to transmit a call proceeding signal to a mobile station of a calling subscriber through a radio network controller, allowing the mobile switching center and the radio network controller to carry out a resource reservation therebetween, allowing the mobile switching center to make reserved resources available and then transmit a facility signal to the mobile station, the facility signal including information about a cause of a call failure, and allowing the mobile station to receive the facility signal and then display the information about the cause of the call failure.
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Afshar Kamran
Dilworth & Barrese LLP
Feild Joseph
Samsung Electronics Co,. Ltd.
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