U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Local area network transmission emulator

Patent 5280481 Issued on January 18, 1994. Estimated Expiration Date: Icon_subject September 20, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Data flow control arrangement for local area network
Patent #: 4787082
Issued on: 11/22/1988
Inventor: Delaney ,   et al.

Broadcasting messages in a distributed processing system
Patent #: 4818984
Issued on: 04/04/1989
Inventor: Chang ,   et al.

Broadcast data distribution system
Patent #: 4868866
Issued on: 09/19/1989
Inventor: Williams, Jr.

Transmission system of a packet signal in an integrated network system using a frame format flexible for various forms of the integrated network system
Patent #: 4926420
Issued on: 05/15/1990
Inventor: Shimizu

Method for controlling address parameters for interconnecting lan and ISDN
Patent #: 4930123
Issued on: 05/29/1990
Inventor: Shimizu

Control architecture of a multi-node circuit- and packet-switching system Patent #: 5093827
Issued on: 03/03/1992
Inventor: Franklin, et al.

Inventors

Assignee

Application

No. 763340 filed on 09/20/1991

US Classes:

370/352, Combined circuit switching and packet switching370/392, Processing of address header for routing, per se370/401Bridge or gateway between networks

Examiners

Primary: Chin, Wellington

Attorney, Agent or Firm

Foreign Patent References

  • 0302646 EP 02/25/1989

International Classes

H04L 012/46
H04L 012/48

Abstract

A method and apparatus for using switched telecommunications services to emulate a local area network (LAN) medium. The method and apparatus convert a public switched network or an equivalent private network into a LAN cabling method for connecting distant devices using the same communications software as used in traditionally wired LANs.

Other References

  • IBM Technical Disclosure Bulletin, Short Hold Mode in ISDN, vol. 32, No. 10A, Mar. 1990, pp. 47-49
  • International Search Report from PTO (7 pages)
  • IEEE Std 802-1990 IEEE Standards for Local and Metropolitan Area Networks: Overview and Architecture (excerpt) (Dec. 31, 1990)
  • U.S. Government Open Systems Interconnection Profile (GOSIP), Version 2.0, Oct., 1990
  • Haugdahl, J. Scott, Architecture Technology Corp., Inside NETBIOS, 2nd Ed
  • Leifer, Dory, Draft Internet RFC, University of Michigan
  • Digital ISDN Connectivity, LAN Bridges and Gateways (1990)
  • Wellfleet Communications, Inc. Router/Bridge PRI, LANs, Bridges, Gateways and Routers (1991)
  • Network Express, Inc. ISDN PRI Bridging, LANs, Bridges, Gateways and Routers (1991)
  • The Software Link Networking with PcC14 MOS, ISDN LAN (1990)
  • Interactive Systems ISDN LAN Bridging, LAN Bridgesand Gateways (1990)
  • PROMPTUS T-1 CommServer+Flexible Bridge/Router+Multiplexer
  • EXCELLTECH INC. ISDN and ExcellNET
  • Lanworks ISDN Router for NetWare (Mar., 1991)
  • Intercomputer Communications Corporation (ICC) RIN Product Overview
  • Teles Solidifies PC Terminal Adapter Leadership: 1-7
  • IBM Product Announcement; IBM ISDN Interface Co-Processor/2 Model 2: 1-3. (Jan., 1991)
  • 3Com NETBuilder Bridge/Routers (1991)
  • ICL/ISDN Upgrade Package for Personal Computers
  • OST ISDN Communications for Personal Computer PC SNET CARD Product Overview
  • Fujitsu ISDN INSIGHTS; Fujitsu Demonstrates ISDN LAN to LAN and WAN to LAN Connectivity
  • DigiBoard Product Profile; DigiBoard ISDN NetLink
  • National Institute of Standards and Technology, North American ISDN Users Forum, Application Software Interface Expert Working Group, Proposed Standard (Sep., 1991)
  • Northern Telecom, ISDN PC Card NetBIOS Interface (Apr., 1988)
  • IBM, ISDN PC Card, ISDNBIOS Programmers Guide (1991)
  • AT&T ISDN PC Card Programming Interface (1989)
  • Hayes Microcomputer Products, Inc. ISDN PC Card, ISDNBIOS Interface (Apr., 1991)
  • ICL, ISDN PC Card Application Program Interface
  • OST, PC SNET Card Programmers Manual
  • Teleos Communications, Applications Interface User's Guide (1990)
  • DigiBoard ISDN NetLink, ISDN NetBIOS LAN (1990)
  • DigiBoard, NetLINK Technical Reference (Nov., 1990
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