CA2188790A1 - Data communications device to selectively operate as an analog modem, a digital modem, and a terminal adapter - Google Patents

Data communications device to selectively operate as an analog modem, a digital modem, and a terminal adapter

Info

Publication number
CA2188790A1
CA2188790A1 CA2188790A CA2188790A CA2188790A1 CA 2188790 A1 CA2188790 A1 CA 2188790A1 CA 2188790 A CA2188790 A CA 2188790A CA 2188790 A CA2188790 A CA 2188790A CA 2188790 A1 CA2188790 A1 CA 2188790A1
Authority
CA
Canada
Prior art keywords
modem
digital
analog
networks
data
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
CA2188790A
Other languages
French (fr)
Other versions
CA2188790C (en
Inventor
Steven R. Blackwell
John Timothy Pearson
Charles C. Fridlin, Iv
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.)
Motorola Mobility LLC
Original Assignee
Steven R. Blackwell
John Timothy Pearson
Charles C. Fridlin, Iv
Motorola, Inc.
Motorola Mobility, Inc.
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
Application filed by Steven R. Blackwell, John Timothy Pearson, Charles C. Fridlin, Iv, Motorola, Inc., Motorola Mobility, Inc. filed Critical Steven R. Blackwell
Publication of CA2188790A1 publication Critical patent/CA2188790A1/en
Application granted granted Critical
Publication of CA2188790C publication Critical patent/CA2188790C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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]
    • H04L12/2854—Wide area networks, e.g. public data networks
    • H04L12/2856—Access arrangements, e.g. Internet access
    • H04L12/2869—Operational details of access network equipments
    • H04L12/2898—Subscriber equipments
    • 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]
    • H04L12/2854—Wide area networks, e.g. public data networks
    • H04L12/2856—Access arrangements, e.g. Internet access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5691—Access to open networks; Ingress point selection, e.g. ISP selection
    • H04L12/5692—Selection among different networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/4917—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using multilevel codes
    • H04L25/4927—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using multilevel codes using levels matched to the quantisation levels of the channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0008—Modulated-carrier systems arrangements for allowing a transmitter or receiver to use more than one type of modulation
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
    • H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
    • H04Q11/0435—Details
    • H04Q11/0471—Terminal access circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13034—A/D conversion, code compression/expansion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/1305—Software aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13106—Microprocessor, CPU
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13174—Data transmission, file transfer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13199—Modem, modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13202—Network termination [NT]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13209—ISDN
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/1332—Logic circuits

Abstract

An apparatus and method for a data commmni-cations device to selectively operate in a plurality of analog and digital modes, including as an analog mo-dem (762), as a digital modem (774), and as a temmi-nal adapter (794). The embodiments provide for a sin-gle, integrated data device to be con-figured and also subsequently reconfigured to provide for data communication over a variety of networks, in-cluding public switched telephone networks and digital networks, including Tl, El and ISDN. The various em-bodiments also provide for signal simulation (370) of the various networks, such that the actual coupled network is transparent to a data temminal transferring information through the data communication device to the network.
CA002188790A 1995-02-28 1996-01-04 Data communications device to selectively operate as an analog modem, a digital modem, and a terminal adapter Expired - Lifetime CA2188790C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/395,332 1995-02-28
US08/395,332 US5671251A (en) 1995-02-28 1995-02-28 Apparatus and method for a data communications device to selectively operate as an analog modem, as a digital modem, and as a terminal adapter
PCT/US1996/000125 WO1996027241A1 (en) 1995-02-28 1996-01-04 Data communications device to selectively operate as an analog modem, a digital modem, and a terminal adapter

Publications (2)

Publication Number Publication Date
CA2188790A1 true CA2188790A1 (en) 1996-09-06
CA2188790C CA2188790C (en) 1999-12-21

Family

ID=23562601

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002188790A Expired - Lifetime CA2188790C (en) 1995-02-28 1996-01-04 Data communications device to selectively operate as an analog modem, a digital modem, and a terminal adapter

Country Status (8)

Country Link
US (1) US5671251A (en)
EP (1) EP0761044A4 (en)
JP (1) JP3706631B2 (en)
CA (1) CA2188790C (en)
IL (1) IL116713A (en)
TW (1) TW295756B (en)
WO (1) WO1996027241A1 (en)
ZA (1) ZA961601B (en)

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US6480549B1 (en) 1997-04-08 2002-11-12 Vocal Technologies, Ltd. Method for determining attenuation in a digital PCM channel
US6633604B1 (en) * 1997-08-11 2003-10-14 Vocal Technologies, Ltd. Method of improving echo canceller training in modems and of discovering characteristics of a PCM channel
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WO1999018712A1 (en) * 1997-10-07 1999-04-15 3Com Corporation COMBINED xDSL AND PSTN MODEMS IN A SINGLE PLATFORM
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Also Published As

Publication number Publication date
WO1996027241A1 (en) 1996-09-06
TW295756B (en) 1997-01-11
IL116713A0 (en) 1996-05-14
EP0761044A4 (en) 2002-10-23
JP3706631B2 (en) 2005-10-12
CA2188790C (en) 1999-12-21
US5671251A (en) 1997-09-23
JPH09512978A (en) 1997-12-22
ZA961601B (en) 1996-09-05
EP0761044A1 (en) 1997-03-12
IL116713A (en) 1999-07-14

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Effective date: 20160104