Multiple appearance directory number support across packet-...

Multiplex communications – Pathfinding or routing – Combined circuit switching and packet switching

Reexamination Certificate

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C370S401000

Reexamination Certificate

active

06961332

ABSTRACT:
The present invention provides for a multiple appearance directory number (MADN) group including terminals on both the public switched telephone network (PSTN) and a packet-switched network. The terminals within the MADN group are preferably on the PSTN and a packet-switched network under the control of the PSTN. While call signaling is centralized and provided by the PSTN, a full complement of PSTN services are available to the terminals on the packet-switched network. With centralized call control and access to services from the PSTN, IP terminals on the packet-switched network are treated as if they were PSTN terminals by PSTN elements, and are capable of implementing PSTN features and functions.

REFERENCES:
patent: 5204861 (1993-04-01), Wiebe
patent: 6363065 (2002-03-01), Thornton et al.
patent: 6836478 (2004-12-01), Huang et al.
patent: 2004/0133641 (2004-07-01), McKinnon et al.
Toga, James and Ott, Jörg, “ITU-T Standardization Activities for Interactive Multimedia Communications on Packet-Based Networks: H.323 and Related Recommendations,” Computer Networks, No. 31, pp. 205-223, 1999, XP-000700319.
Hamdi, Maher et al, “Voice Service Interworking for PSTN and IP Networks,” IEEE Communications Magazine, May 1999, XP000830888.
“A Primer on the H.323 Series Standard,” DataBeam Corporation, 1997, 1998, http://www.lotus.com/products/sametime.nsf/Menu/PDF/$FILE/h323—primer-v2.pdf.

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