Multiplex communications – Pathfinding or routing – Combined circuit switching and packet switching
Reexamination Certificate
2005-08-09
2005-08-09
Ton, Dang (Department: 2666)
Multiplex communications
Pathfinding or routing
Combined circuit switching and packet switching
C370S389000, C370S401000, C370S465000, C379S088170
Reexamination Certificate
active
06928068
ABSTRACT:
A multi-services access system, such as a multi-services digital loop carrier (DLC) system for a telecommunications network, has a packet-mode card, such as a digital subscriber line (DSL) card, configured to receive data packets corresponding to one or more data signals and derived-voice packets from a single packet-mode customer premises equipment (CPE) unit, wherein the packet-mode card determines whether each received packet is a data packet or a derived-voice packet. The access system also has a packet interface configured to receive the data packets from the packet-mode card and to transmit the data packets to a packet-switched network for packet-based switching. In addition, the access system has a derived-signal server configured to receive the derived-voice packets from the packet-mode card and to convert the derived-voice packets into a digital voice stream, as well as a controller and a circuit interface configured to receive the digital voice stream from the derived-signal server and to transmit the digital voice stream to a circuit-switched network for circuit-based switching. Since the access system is able to assign resources dynamically to packet-mode CPE units (as opposed to prior-art DLC systems, which have resources pre-assigned), the system of the present invention is able to utilize system resources more efficiently. Moreover, since the system has an internal derived-signal server, there is no need to transmit derived voice signals outside of the system for conversion.
REFERENCES:
patent: 4539676 (1985-09-01), Lucas
patent: 5550906 (1996-08-01), Chau et al.
patent: 6064673 (2000-05-01), Anderson et al.
patent: 6310941 (2001-10-01), Crutcher et al.
patent: 6320867 (2001-11-01), Bellenger et al.
patent: 6335936 (2002-01-01), Bossemeyer et al.
patent: 6496811 (2002-12-01), Bodnar
patent: 6657994 (2003-12-01), Rajakarunanayake
patent: 2001/0040885 (2001-11-01), Jonas et al.
patent: 2002/0097708 (2002-07-01), Deng
patent: 0 975 181 (2000-01-01), None
patent: WO 98/20702 (1998-05-01), None
Crowe Donald E.
Fluss Harold S.
Rush Allen M.
Hom Shick
Lucent Technologies - Inc.
Ton Dang
LandOfFree
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