Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2011-08-09
2011-08-09
Ly, Nghi H (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S432100, C455S435100, C455S456100, C455S466000
Reexamination Certificate
active
07996007
ABSTRACT:
Methods, systems, and computer program products for routing a call from a 2G network to a dual mode 2G/session initiation protocol (SIP) device are disclosed. According to one method, a 2G mobility location information query message requesting mobility location information for delivering a call to a dual mode 2G/SIP device roaming in a SIP-based network is received at a communications signal message routing node, wherein the mobility information query message includes a destination subscriber identifier associated with the dual mode 2G/SIP device. SIP mobility location information is determined based on the destination subscriber identifier and the SIP mobility location information is provided to the query originator.
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Jenkins Wilson Taylor & Hunt, P.A.
Ly Nghi H
Tekelec
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