Method and apparatus for solving number portability in origin

Details Method and apparatus for solving number portability in origin Method and apparatus for solving number portability in origin

2005-03-29

2005-03-29

Trost, William (Department: 2683)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S433000, C455S462000, C455S552100, C370S402000, C370S466000, C370S328000, C379S220010, C379S221130, C379S221140

Reexamination Certificate

active

06873849

ABSTRACT:
This invention provides a method intended to solve Number Portability in origin for calls to ported subscribers at a destination classical network, an inter-working function intended to provide the means to support said method, and a hierarchical DNS structure able to provide a new URI indicating interworking with an external database where routing data for said ported subscribers reside. This new URI specifies the Global Title address of the external database and the access protocol to said external database. The NAPTR resolution for that URI implies the use of an Inter-working Feature (IWF) placed in the DNS-resolver part of an S-CSCF, or in a close association, in the originating network. This IWF comprises a Protocol Translator and Controller adapting between DNS format and the external database access protocol format, at least one of a plurality of Application Protocol Handling Modules, and an SS7 Protocol Stack.

REFERENCES:
patent: 6021126 (2000-02-01), Farris et al.
patent: 6201965 (2001-03-01), Mizell et al.
patent: 6577643 (2003-06-01), Rai et al.
patent: 6741853 (2004-05-01), Jiang et al.
patent: 6795444 (2004-09-01), Vo et al.
patent: 20010046234 (2001-11-01), Agrawal et al.
patent: WO 00 39981 (2000-07-01), None
patent: WO 01 13601 (2001-02-01), None
patent: WO 01 54444 (2001-07-01), None

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