Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2007-08-07
2007-08-07
Nguyen, Duc M. (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S435100, C455S439000, C455S445000
Reexamination Certificate
active
11070940
ABSTRACT:
Methods, systems, and computer program products for routing query messages associated with prepaid subscribers in a number portability environment are disclosed. One method may include sending a registration message to an HLR. At the HLR, the ID or address of an STP is inserted as the prepaid SCP ID in a registration response message. The registration response message is sent to the MSC/VLR that originated the registration message. This action forces the VLR to send prepaid query messages to the STP, rather than to the prepaid SCP. When the STP receives a query message relating to call originating from the prepaid subscriber, the STP performs a number portability database lookup and determines the routing number corresponding to the called subscriber and the prepaid SCP corresponding to the calling subscriber. The STP then routes the query message to the appropriate prepaid SCP. The prepaid SCP determines whether the call is an in-network call using the routing number obtained in the number portability database lookup and the calling party number.
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Jenkins Wilson Taylor & Hunt, P.A.
Nguyen Duc M.
Phuong Dai
Tekelec
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