Telephonic communications – Plural exchange network or interconnection – Multi-pbx interconnection
Reexamination Certificate
2011-04-05
2011-04-05
Elahee, MD S (Department: 2614)
Telephonic communications
Plural exchange network or interconnection
Multi-pbx interconnection
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.
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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.
Chang Sujin Catherine
Flynn James
Liao Robert
Mitsumori Derek
Olshansky Robert
Elahee MD S
Verizon Data Services LLC
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