IP multimedia subsystem virtual call/session control functions

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8533340
APP PUB NO 20080254795A1
SERIAL NO

11786568

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Systems and methods provide virtual CSCFs in an IMS system. The Virtual CSCFs may be virtual S-CSCFs or virtual P-CSCFs. A master virtual CSCF may be used to distribute subscriber data and initial filter criteria to the virtual CSCFs in a group. Thus one of multiple servers may be used for processing call sessions for the same subscriber, thereby avoiding overloading a particular CSCF in an IMS system.

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Patent Owner(s)

  • AT&T INTELLECTUAL PROPERTY I, L.P.;AT&T KNOWLEDGE VENTURES, L.P.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hoover, Gerald L Middletown Township, US 10 161
Lu, Min Freehold, US 133 1408
Ratcliffe, Mark Oakhurst, US 17 208

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