Telephonic communications – Emergency or alarm communications – Central office responsive to emergency call or alarm
Reexamination Certificate
2006-09-05
2006-09-05
Ramakrishnaiah, Melur (Department: 2643)
Telephonic communications
Emergency or alarm communications
Central office responsive to emergency call or alarm
C379S037000, C379S049000
Reexamination Certificate
active
07103153
ABSTRACT:
The invention is directed to methods (and corresponding apparatus) for accurate transmission of an ELIN/callback number from an emergency caller after the emergency call goes on-hook. The methods include (upon initiation of an emergency call) the steps of storing an emergency location identification number and/or callback number in a buffer; and, upon detecting an on-hook event, transmitting the ELIN and/or callback number from the buffer. According to a preferred embodiment of the invention, the emergency call is disconnected after said step of transmitting; and prior to said step of transmitting, optionally first over private network and to the public network PSAP, a timer is initiated. The step of disconnecting is performed after the timer expires.
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Ozery Nissim
Schmitt Heinz
Siu Jorge Waimin
Stumer Peggy M.
Ramakrishnaiah Melur
Siemens Communications Inc.
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