Multiplex communications – Pathfinding or routing – Combined circuit switching and packet switching
Patent
1997-08-27
1999-06-15
Jung, Min
Multiplex communications
Pathfinding or routing
Combined circuit switching and packet switching
370402, 379 9331, H04L 1246, H04M 1100
Patent
active
059128887
ABSTRACT:
Apparatus and method for enabling bilateral transmission of digital data between a local area network and telephone company networks employing both analog and digital telephone lines. A modem modulates signals responsive to signals from a local area network representing an outgoing call to form digital telephone signals suitable for transmission by a telephone line and suitable for demodulation by receiving analog modems. A circuit switched time division multiplex bus transmits the digital telephone signals to the telephone line. The modem also demodulates incoming digital telephone signals to form digital network bus signals divided into packets. A packet bus transmits the digital network bus signals to a network interface which processes the signals and transmits them to the local area network.
REFERENCES:
patent: 4796292 (1989-01-01), Thomas
patent: 4991169 (1991-02-01), Davis et al.
patent: 5237561 (1993-08-01), Pyhalammi
patent: 5315641 (1994-05-01), Montgomery et al.
patent: 5347516 (1994-09-01), Yoshida
patent: 5361259 (1994-11-01), Hunt et al.
patent: 5374952 (1994-12-01), Flohr
patent: 5410754 (1995-04-01), Klotzbach et al.
patent: 5428608 (1995-06-01), Freeman et al.
patent: 5517556 (1996-05-01), Pounds et al.
Hugh White, "A T-1 Based DSP Modern for Interfacing Voice and Packet Networks," IEEE Journal, 1988.
Paul Desmond, "Primary Access Adds PAD to Network Access System," Network World, p. 17, Mar. 4, 1991.
M. Pecen et al., "A Bi-Directional Wire to Local Area Network Interface Module: Summary of Functional Requirements and Fundamental Architecture," Jan. 18, 1994.
M. Pecen et al., "A Bi-Directional Wire Line to Local Area Network Interface and Method: Prototype Specifications," Aug. 10, 1993.
Primary Access Corp., Overview of Primary Access network acess system (circa 1992).
Primary Access Corp., Primary Access System Training Manual (circa Feb. 1993).
Balton Donald C.
Baum Marc S.
Goodknight Gregory Warren
Hansen Christopher R.
Herman Jeffrey E.
Jung Min
U.S. Robotics Access Corp.
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