Policy control and billing support for call transfer in a...

Details Policy control and billing support for call transfer in a... Policy control and billing support for call transfer in a...

2006-06-19

2010-06-15

Hewitt, II, Calvin L (Department: 3685)

Data processing: financial, business practice, management, or co

Business processing using cryptography

Usage protection of distributed data files

C705S050000, C705S051000

Reexamination Certificate

active

07739196

ABSTRACT:
A system includes a database configured to store account information relating to users of a telecommunications network. Additionally, a session initiation protocol (SIP) server receives first messages initiating call transfers. The server appends billing information and a digital signature to the first message based on account information of one of the users stored in the database. The digital signature provides for authentication of the call transfers.

REFERENCES:
patent: 6614781 (2003-09-01), Elliott et al.
patent: 1324544 (2003-07-01), None
draft-ietf-sip-refer-02, The SIP refer method, 19 pages, Internet Engineering Task Force, Oct. 30, 2001.
draft-dcsgroup-sip-proxy-proxy-00., SIP proxy-to-proxy extensions for supporting Distributed Call State, 12 pages, Internet Engineering Task Force, Nov. 1999.
draft-pan-diameter-sip-01.txt, Diameter: Policy and Accounting Extension for SIP, 25 pages, Internet Engineering Task Force, Nov. 15, 1998.
draft-ietf-sip-rfc2543bis-04.txt, SIP: Session Initiation Protocol, 211 pages, Internet Engineering Task Force, Jul. 20, 2001.
rfc2753, A Framework for Policy-based Admission Control, 20 pages, IETF.
SIP ascendant: A year ago, we said SIP would win the “protocol wars.” Today, however, SIP's biggest challenge comes not from rival protocols, but from a timid market's hesitation to explore the stunning new application paradigms that it enables, (Michael, Bill, Communications Convergence , v 9 , n 6 , p. 28(22), Jun. 2001, ISSN: 1534-2840, 26 page.

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