Telephonic communications – Emergency or alarm communications – Central office responsive to emergency call or alarm
Reexamination Certificate
2011-05-31
2011-05-31
Ramakrishnaiah, Melur (Department: 2614)
Telephonic communications
Emergency or alarm communications
Central office responsive to emergency call or alarm
C379S037000, C370S352000
Reexamination Certificate
active
07953209
ABSTRACT:
The delivery of emergency services to users of a set of communication devices in a packet-switched network is enabled by a method that determines a routing key corresponding to a particular directory number that is associated with a particular communication device, and stores the directory number and the corresponding routing key in a database accessible to a packet switch. The steps of determining and storing are executed during a provisioning phase, in the absence of an emergency call placed by the communication device. The routing key is indicative of routing instructions to be followed by the packet switch upon receipt of a future emergency call placed by the communication device. When the call is received by the packet switch, it will consult the database to obtain the routing key associated with the directory number and send the call as well as the routing key over a path dedicated to emergency calls.
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Brabant Bernard
Caron Guy
Crago William B.
Habib Hakem M.
Wilkes Marie Berthe Barbara
BCE Inc.
Ramakrishnaiah Melur
LandOfFree
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