Lillian Dannenberg

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Pflugerville, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for call processing for SIP and ISUP interworking
- Patent number 9,578,127
- Issue date Feb 21, 2017
- AT&T Intellectual Property I, L.P.
- Chaoxin Qiu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for call processing for SIP and ISUP interworking
- Patent number 8,798,095
- Issue date Aug 5, 2014
- AT&T Intellectual Property I, L.P.
- Chaoxin Qiu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
METHOD AND APPARATUS FOR CALL PROCESSING FOR SIP AND ISUP INTERWORKING
- Publication number 20140341215
- Publication date Nov 20, 2014
- CHAOXIN QIU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND APPARATUS FOR CALL PROCESSING FOR SIP AND ISUP INTERWORKING
- Publication number 20090097471
- Publication date Apr 16, 2009
- AT&T KNOWLEDGE VENTURES, L.P.
- CHAOXIN QIU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE