CA2188171A1 - Data/Voice/Fax Advanced Priority Statistical Multiplexer - Google Patents

Data/Voice/Fax Advanced Priority Statistical Multiplexer

Info

Publication number
CA2188171A1
CA2188171A1 CA2188171A CA2188171A CA2188171A1 CA 2188171 A1 CA2188171 A1 CA 2188171A1 CA 2188171 A CA2188171 A CA 2188171A CA 2188171 A CA2188171 A CA 2188171A CA 2188171 A1 CA2188171 A1 CA 2188171A1
Authority
CA
Canada
Prior art keywords
data
voice
site
facsimile
multiplexer
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
CA2188171A
Other languages
French (fr)
Other versions
CA2188171C (en
Inventor
Harinarayana Arimilli
Ashish A. Thanawala
Vasant Kumar Kanchan
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.)
Multi Tech Systems Inc
Original Assignee
Harinarayana Arimilli
Ashish A. Thanawala
Vasant Kumar Kanchan
Multi-Tech Systems, 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
Priority claimed from US08/229,958 external-priority patent/US5682386A/en
Application filed by Harinarayana Arimilli, Ashish A. Thanawala, Vasant Kumar Kanchan, Multi-Tech Systems, Inc. filed Critical Harinarayana Arimilli
Priority to CA002276196A priority Critical patent/CA2276196A1/en
Priority to CA002276198A priority patent/CA2276198A1/en
Publication of CA2188171A1 publication Critical patent/CA2188171A1/en
Application granted granted Critical
Publication of CA2188171C publication Critical patent/CA2188171C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00127—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture
    • H04N1/00281—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a telecommunication apparatus, e.g. a switched network of teleprinters for the distribution of text-based information, a selective call terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
    • H04J3/1682—Allocation of channels according to the instantaneous demands of the users, e.g. concentrated multiplexers, statistical multiplexers
    • H04J3/1688—Allocation of channels according to the instantaneous demands of the users, e.g. concentrated multiplexers, statistical multiplexers the demands of the users being taken into account after redundancy removal, e.g. by predictive coding, by variable sampling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/24—Time-division multiplex systems in which the allocation is indicated by an address the different channels being transmitted sequentially
    • H04J3/247—ATM or packet multiplexing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/40—Network security protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/253—Telephone sets using digital voice transmission
    • 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
    • H04M11/064—Data transmission during pauses in telephone conversation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00127—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture
    • H04N1/00281—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a telecommunication apparatus, e.g. a switched network of teleprinters for the distribution of text-based information, a selective call terminal
    • H04N1/00302—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a telecommunication apparatus, e.g. a switched network of teleprinters for the distribution of text-based information, a selective call terminal with a telephonic apparatus, e.g. telephone answering machine or videotex terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00127—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture
    • H04N1/00281—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a telecommunication apparatus, e.g. a switched network of teleprinters for the distribution of text-based information, a selective call terminal
    • H04N1/00312—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a telecommunication apparatus, e.g. a switched network of teleprinters for the distribution of text-based information, a selective call terminal with a digital transmission apparatus, e.g. a switched network of teleprinters for the distribution of text-based information, SMS or ISDN device
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/64—Hybrid switching systems
    • H04L12/6418—Hybrid transport
    • H04L2012/6424—Access arrangements
    • H04L2012/6427—Subscriber Access Module; Concentrator; Group equipment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/64—Hybrid switching systems
    • H04L12/6418—Hybrid transport
    • H04L2012/6445—Admission control
    • H04L2012/6459—Multiplexing, e.g. TDMA, CDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/64—Hybrid switching systems
    • H04L12/6418—Hybrid transport
    • H04L2012/6445—Admission control
    • H04L2012/6462—Movable boundaries in packets or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/64—Hybrid switching systems
    • H04L12/6418—Hybrid transport
    • H04L2012/6464—Priority
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/64—Hybrid switching systems
    • H04L12/6418—Hybrid transport
    • H04L2012/6486—Signalling Protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/64—Hybrid switching systems
    • H04L12/6418—Hybrid transport
    • H04L2012/6494—Silence suppression
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S370/00—Multiplex communications
    • Y10S370/916—Multiplexer/demultiplexer

Abstract

A data multiplexing network is described which multiplexes a plurality of asynchronous data channels with an asynchronous data stream representing compressed voice signals and/or facsimile signals onto a single synchronous data packet stream. The single synchronous data packet stream is then transmitted by a high speed statistical multiplexer over a composite link to a second site using a modified high-level synchronous data link control protocol with an overlay of an advanced priority statistical multiplexing algorithm. The asynchronous data channels and the compressed voice channel and/or facsimile signals are demultiplexed and reconstructed for sending to other asynchronous computer terminals and to a standard telephone or facsimile analog port at the second site, respectively. PBX trunk interfaces are also provided to allow PBX's to share the composite link between sites. Communication between the first site by voice or facsimile and the second site is transparent to the users. The multiplexer efficiently allocates the bandwidth of the composite link by detecting silence periods in the voice signals and suppressing the sending of the voice information to preserve bandwidth. An advanced priority statistical multiplexer is also described which dynamically allocates composite link bandwidth to both time-sensitive and non-time sensitive data to maximize data throughout efficiency and quality while simultaneously reducing multiplexer processing overhead. <IMAGE>
CA002188171A 1994-04-19 1995-04-18 Data/voice/fax advanced priority statistical multiplexer Expired - Fee Related CA2188171C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA002276196A CA2276196A1 (en) 1994-04-19 1995-04-18 Multiplex information network
CA002276198A CA2276198A1 (en) 1994-04-19 1995-04-18 Advanced priority statistical multiplexing communication method

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US08/229,958 US5682386A (en) 1994-04-19 1994-04-19 Data/voice/fax compression multiplexer
US08/229,958 1994-04-19
US08/333,365 1994-11-02
US08/333,365 US5757801A (en) 1994-04-19 1994-11-02 Advanced priority statistical multiplexer
PCT/US1995/005034 WO1995029576A2 (en) 1994-04-19 1995-04-18 Data/voice/fax advanced priority statistical multiplexer

Related Child Applications (2)

Application Number Title Priority Date Filing Date
CA002276196A Division CA2276196A1 (en) 1994-04-19 1995-04-18 Multiplex information network
CA002276198A Division CA2276198A1 (en) 1994-04-19 1995-04-18 Advanced priority statistical multiplexing communication method

Publications (2)

Publication Number Publication Date
CA2188171A1 true CA2188171A1 (en) 1995-11-02
CA2188171C CA2188171C (en) 1999-10-26

Family

ID=26923779

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002188171A Expired - Fee Related CA2188171C (en) 1994-04-19 1995-04-18 Data/voice/fax advanced priority statistical multiplexer

Country Status (7)

Country Link
US (4) US5757801A (en)
EP (2) EP0756796B1 (en)
JP (1) JP3193054B2 (en)
AT (1) ATE196708T1 (en)
CA (1) CA2188171C (en)
DE (1) DE69518980T2 (en)
WO (1) WO1995029576A2 (en)

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US6275502B1 (en) 2001-08-14
ATE196708T1 (en) 2000-10-15
EP0756796B1 (en) 2000-09-27
EP0998092A3 (en) 2001-05-02
CA2188171C (en) 1999-10-26
US5757801A (en) 1998-05-26
JP3193054B2 (en) 2001-07-30
EP0756796A1 (en) 1997-02-05
JPH09512402A (en) 1997-12-09
US6570891B1 (en) 2003-05-27
WO1995029576A3 (en) 1996-06-13
WO1995029576A2 (en) 1995-11-02
US20030152105A1 (en) 2003-08-14
DE69518980T2 (en) 2001-03-15
EP0998092A2 (en) 2000-05-03
DE69518980D1 (en) 2000-11-02

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