Multiplex communications – Pathfinding or routing – Combined circuit switching and packet switching
Reexamination Certificate
2004-08-02
2009-11-17
Cho, Hong (Department: 2419)
Multiplex communications
Pathfinding or routing
Combined circuit switching and packet switching
C455S461000
Reexamination Certificate
active
07620034
ABSTRACT:
Systems and methods for a call flow for a mobile directory number (MDN) from a first phone to a second phone which has been intra-service ported. The system includes: a first switch of a first technology; a second switch of a second technology; and a local number portability database (LNP). The LNP stores local routing numbers (LRN) associated with the MDN. The WLNP system determines whether a call, from the first phone, is received by a public switched telephone network (PSTN) or the first switch. If the call is received by the PSTN with the LRN, the call is routed to the second switch based on the LRN. If the call is received by the first switch without the LRN, the first switch queries the LNP for the LRN and the call is routed intra-carrier to the second switch.
REFERENCES:
patent: 6240293 (2001-05-01), Koster
patent: 6738633 (2004-05-01), Kim et al.
patent: 2006/0240819 (2006-10-01), Xu et al.
Hamadi Charles Jamile
Tran Nhan Thanh
AT&T Mobility II LLC
Cho Hong
Choi Eunsook
Moazzam & Associates, LLC
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