PBX call management

Telephonic communications – Plural exchange network or interconnection – Multi-pbx interconnection

Reexamination Certificate

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Details

C379S198000, C379S220010, C379S234000, C369S002000, C715S205000

Reexamination Certificate

active

07920692

ABSTRACT:
Enhanced call management services to users receiving incoming calls on extensions on a private branch exchange (PBX) is provided by an application server configured to provide call management services to at least one of the users and a protocol proxy configured to receive call information from the PBX according to a protocol for establishing call sessions. The application server is further configured to receive the call information from the protocol proxy.

REFERENCES:
patent: 7184527 (2007-02-01), Lin et al.
patent: 2004/0246822 (2004-12-01), Wong
patent: 2005/0282543 (2005-12-01), Idnani et al.
patent: 98/56141 (1998-12-01), None
Jiang et al., “Integrating Internet Telephony Services”, IEEE Internet Computing, IEEE Service Center, New York, NY, US, vol. 6, No. 3, May 2202, pp. 64-72.
J. Rosenberg et al , RFC 3261, “SIP—Session Initiation Protocol,” Jun. 2002, published by the Internet Society of Reston, Virginia.
R. Sparks et al., RFC 3515, “The Session Initiation Protocol (SIP) Refer Method,” Apr. 2003, published by the Internet Society of Reston, Virginia.

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