CA2253373A1 - Information network access apparatus and methods for communicating information packets via telephone lines - Google Patents

Information network access apparatus and methods for communicating information packets via telephone lines

Info

Publication number
CA2253373A1
CA2253373A1 CA002253373A CA2253373A CA2253373A1 CA 2253373 A1 CA2253373 A1 CA 2253373A1 CA 002253373 A CA002253373 A CA 002253373A CA 2253373 A CA2253373 A CA 2253373A CA 2253373 A1 CA2253373 A1 CA 2253373A1
Authority
CA
Canada
Prior art keywords
line
information packets
information
modem
telephone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002253373A
Other languages
French (fr)
Other versions
CA2253373C (en
Inventor
John Brian Terry
Roger St. Patrick Richards
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Elastic Networks Inc
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=24569374&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2253373(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Publication of CA2253373A1 publication Critical patent/CA2253373A1/en
Application granted granted Critical
Publication of CA2253373C publication Critical patent/CA2253373C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/40006—Architecture of a communication node
    • H04L12/40032—Details regarding a bus interface enhancer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/407—Bus networks with decentralised control
    • H04L12/413—Bus networks with decentralised control with random access, e.g. carrier-sense multiple-access with collision detection (CSMA-CD)
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H04M11/062—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors using different frequency bands for speech and other data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/403—Bus networks with centralised control, e.g. polling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2212/00—Encapsulation of packets

Abstract

Access to a CSMA/CD (Carrier Sense Multiple Access with Collision Detection) network (10) is provided via a telephone line (12) by providing a master modem (34) at the head end and a slave modem (32) at the subscriber end of the line.
The master modem provides a CSMA/CD interface (36) to the network and controls half duplex communications with the slave modem via the line to avoid collisions of information packets on the line. The information packets are enveloped in frames on the line with error checking information; control information between the modems is contained in the same and/or in separate frames. The modulation method and signal bandwidth can be varied depending on errors to provide optimum communications capacity via any particular line, and a ratio of upstream to downstream information packets can be varied depending on buffer fills at the modems. The master modem can be multiplexed for multiple lines. The modulated signal frequencies are above telephone signal frequencies so that each line can be frequency diplexed for simultaneous telephone communications.
CA002253373A 1996-05-01 1996-09-11 Information network access apparatus and methods for communicating information packets via telephone lines Expired - Fee Related CA2253373C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/640,705 US5912895A (en) 1996-05-01 1996-05-01 Information network access apparatus and methods for communicating information packets via telephone lines
US08/640,705 1996-05-01
PCT/CA1996/000601 WO1997041667A1 (en) 1996-05-01 1996-09-11 Information network access apparatus and methods for communicating information packets via telephone lines

Publications (2)

Publication Number Publication Date
CA2253373A1 true CA2253373A1 (en) 1997-11-06
CA2253373C CA2253373C (en) 2002-05-21

Family

ID=24569374

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002253373A Expired - Fee Related CA2253373C (en) 1996-05-01 1996-09-11 Information network access apparatus and methods for communicating information packets via telephone lines

Country Status (8)

Country Link
US (3) US5912895A (en)
EP (1) EP0896767B1 (en)
JP (1) JP3506438B2 (en)
AT (1) ATE231670T1 (en)
AU (1) AU704793B2 (en)
CA (1) CA2253373C (en)
DE (1) DE69625936T2 (en)
WO (1) WO1997041667A1 (en)

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Also Published As

Publication number Publication date
US6327264B1 (en) 2001-12-04
US5912895A (en) 1999-06-15
EP0896767A1 (en) 1999-02-17
AU704793B2 (en) 1999-05-06
JPH11510018A (en) 1999-08-31
EP0896767B1 (en) 2003-01-22
AU6867596A (en) 1997-11-19
DE69625936T2 (en) 2003-10-30
CA2253373C (en) 2002-05-21
JP3506438B2 (en) 2004-03-15
US6587473B2 (en) 2003-07-01
ATE231670T1 (en) 2003-02-15
US20030002519A1 (en) 2003-01-02
WO1997041667A1 (en) 1997-11-06
DE69625936D1 (en) 2003-02-27

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