CA2033572A1 - Digital cross connection apparatus - Google Patents

Digital cross connection apparatus

Info

Publication number
CA2033572A1
CA2033572A1 CA2033572A CA2033572A CA2033572A1 CA 2033572 A1 CA2033572 A1 CA 2033572A1 CA 2033572 A CA2033572 A CA 2033572A CA 2033572 A CA2033572 A CA 2033572A CA 2033572 A1 CA2033572 A1 CA 2033572A1
Authority
CA
Canada
Prior art keywords
cross connection
signals
connection apparatus
digital cross
sizes
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
CA2033572A
Other languages
French (fr)
Other versions
CA2033572C (en
Inventor
Katsuichi Ohara
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Publication of CA2033572A1 publication Critical patent/CA2033572A1/en
Application granted granted Critical
Publication of CA2033572C publication Critical patent/CA2033572C/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
    • H04L49/00—Packet switching elements
    • H04L49/10—Packet switching elements characterised by the switching fabric construction
    • H04L49/104—Asynchronous transfer mode [ATM] switching fabrics
    • 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
    • H04J3/1605—Fixed allocated frame structures
    • H04J3/1611—Synchronous digital hierarchy [SDH] or SONET
    • 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
    • H04Q11/0407—Selecting arrangements for multiplex systems for time-division multiplexing using a stored programme control

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

DIGITAL CROSS CONNECTION APPARATUS

ABSTRACT OF THE DISCLOSURE
A cross connection apparatus which performs cross connection using the divided VT signals, as cross connection units, obtained by division of the VT sizes foming virtual tributary (VT) signals of input side transmission line signals into whole integers by predetermined common size unit, wherein it is possible to perform cross connection by common hardware even if a plurality of types of VT signals having different VT
sizes are input.
CA002033572A 1990-01-09 1991-01-03 Digital cross connection apparatus Expired - Fee Related CA2033572C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP02-001745 1990-01-09
JP2001745A JPH03207197A (en) 1990-01-09 1990-01-09 Digital cross-connecting device

Publications (2)

Publication Number Publication Date
CA2033572A1 true CA2033572A1 (en) 1991-07-10
CA2033572C CA2033572C (en) 1994-10-04

Family

ID=11510103

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002033572A Expired - Fee Related CA2033572C (en) 1990-01-09 1991-01-03 Digital cross connection apparatus

Country Status (4)

Country Link
US (1) US5144297A (en)
EP (1) EP0437197A3 (en)
JP (1) JPH03207197A (en)
CA (1) CA2033572C (en)

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JP2993715B2 (en) * 1990-08-17 1999-12-27 株式会社日立製作所 ATM switch and control method thereof
DE4104238A1 (en) * 1991-02-12 1992-08-13 Siemens Ag METHOD FOR RECEIVING AND DELIVERING FRAME HEADS FROM AND FOR STM-1 SIGNALS IN A FRAME HEAD SERVER OF A NETWORK NODE
US5444705A (en) * 1991-02-22 1995-08-22 International Business Machines Corp. Dual priority switching apparatus for simplex networks
CA2068056C (en) * 1991-05-07 1998-06-16 Kazuo Sakagawa Switching node in label multiplexing type switching network
DE4117869A1 (en) * 1991-05-31 1992-12-03 Standard Elektrik Lorenz Ag SPACE AND TIME COUPLING ELEMENT
JPH0563734A (en) * 1991-08-28 1993-03-12 Nec Corp Data communication equipment
DE69227736T2 (en) * 1991-08-30 1999-04-29 Nec Corp Insert the "virtual child path is empty" signal using the time slot switching method
US5307342A (en) * 1991-08-30 1994-04-26 International Business Machines Corporation Heterogeneous ports switch
ATE145104T1 (en) * 1992-01-15 1996-11-15 Siemens Ag METHOD FOR SWITCHING DIGITAL SIGNALS
US5291485A (en) * 1992-02-18 1994-03-01 Alcatel Network Systems, Inc. Method and apparatus for translating differently-sized virtual tributaries organized according to a synchronous optical network (SONET) standard
US5315594A (en) * 1992-03-02 1994-05-24 Alcatel Network Systems, Inc. Inter-network transport element of sonet overhead
US5365518A (en) * 1992-03-02 1994-11-15 Alcatel Network Systems, Inc. Sonet overhead server
FI90707C (en) * 1992-04-24 1994-03-10 Nokia Telecommunications Oy Method of forming the coupling routes in a cross coupler
IT1257546B (en) * 1992-06-15 1996-01-30 Cselt Centro Studi Lab Telecom OPTICAL SWITCH FOR FAST CELL SWITCHING NETWORKS.
EP0576856A3 (en) * 1992-06-30 1996-07-03 Siemens Ag Method and circuit for transmission of a continuous atm bitstream
US5329524A (en) * 1992-10-20 1994-07-12 At&T Bell Laboratories TDM circuit-switching arrangement that handles frames of different sizes
US5546391A (en) * 1993-03-04 1996-08-13 International Business Machines Corporation Central shared queue based time multiplexed packet switch with deadlock avoidance
US5784377A (en) * 1993-03-09 1998-07-21 Hubbell Incorporated Integrated digital loop carrier system with virtual tributary mapper circuit
JP2541107B2 (en) * 1993-06-30 1996-10-09 日本電気株式会社 Cross-connect interfaces and equipment
JPH0766833A (en) * 1993-08-24 1995-03-10 Mitsubishi Electric Corp Frame repeater, frame repeater group and relay method
GB9400057D0 (en) * 1994-01-05 1994-03-02 Plessey Telecomm Telecommunications system
US5493565A (en) * 1994-08-10 1996-02-20 Dsc Communications Corporation Grooming device for streamlining a plurality of input signal lines into a grouped set of output signals
US5774067A (en) * 1995-06-07 1998-06-30 International Business Machines Corporation Flash-flooding multi-stage interconnection network with parallel path seeking switching elements
US5835024A (en) * 1995-06-07 1998-11-10 International Business Machines Corporation Multi-stage interconnection network with selectable function switching apparatus
JPH0946782A (en) * 1995-08-01 1997-02-14 Fujitsu Ltd Transfer method for setting information and monitoring information in communication equipment
US6456596B2 (en) 1996-07-23 2002-09-24 Marconi Communications Limited Synchronous transmission systems
US5961627A (en) * 1997-06-18 1999-10-05 Gigalabs, Inc High speed switch for high speed connection between computers and peripheral devices
JPH11154954A (en) 1997-11-20 1999-06-08 Hitachi Ltd Atm switch
US6693904B1 (en) * 1998-04-09 2004-02-17 Lucent Technologies Inc. Trace format for a sliced switch fabric
JP2000013387A (en) * 1998-06-22 2000-01-14 Fujitsu Ltd Synchronous communication network transmitter provided with exchange function of asynchronous communication network
US6628651B1 (en) 2000-04-03 2003-09-30 Tellabs Operations, Inc. Communication switching techniques with improved frame format
US7260092B2 (en) 2000-04-11 2007-08-21 Lsi Corporation Time slot interchanger
US20030058848A1 (en) * 2000-04-11 2003-03-27 Velio Communications, Inc. Scheduling clos networks
US7301941B2 (en) * 2000-04-11 2007-11-27 Lsi Corporation Multistage digital cross connect with synchronized configuration switching
US6870838B2 (en) 2000-04-11 2005-03-22 Lsi Logic Corporation Multistage digital cross connect with integral frame timing
WO2001097390A2 (en) * 2000-06-14 2001-12-20 Vitesse Semiconductor Corporation Transparent transport overhead mapping
US6288581B1 (en) 2001-01-05 2001-09-11 Pericom Semiconductor Corp. Low-voltage differential-signalling output buffer with pre-emphasis
US6760381B2 (en) 2001-01-05 2004-07-06 Centillium Communications Inc. High-voltage differential driver using stacked low-breakdown transistors and nested-miller compensation
US7027436B2 (en) * 2001-08-31 2006-04-11 Tellabs Operations, Inc. Communication multistage switching techniques
US20040027261A1 (en) * 2002-03-15 2004-02-12 Tymchuk Kevin Bruce Centrally synchronized distributed switch
US7346049B2 (en) * 2002-05-17 2008-03-18 Brian Patrick Towles Scheduling connections in a multi-stage switch to retain non-blocking properties of constituent switching elements
US7177328B2 (en) * 2002-11-27 2007-02-13 Transwitch Corporation Cross-connect switch for synchronous network
US7330428B2 (en) * 2002-12-11 2008-02-12 Lsi Logic Corporation Grooming switch hardware scheduler
US7460535B2 (en) * 2002-12-18 2008-12-02 Synopsys, Inc. Device and method that allows single data recovery circuit to support multiple USB ports
US7848644B2 (en) 2004-02-23 2010-12-07 Dynamic Method Enterprises Limited Method and an apparatus to provide optical equipment protection

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Publication number Priority date Publication date Assignee Title
JPS6132130A (en) * 1984-07-23 1986-02-14 Seiko Instr & Electronics Ltd Coordinate reader
JPH06105894B2 (en) * 1987-06-26 1994-12-21 日本電気株式会社 Internal frame configuration method of digital cross connect
US4782478A (en) * 1987-03-04 1988-11-01 Bell Communications Research, Inc. Time division circuit switch
JPH01101747A (en) * 1987-10-14 1989-04-19 Nec Corp Dsi interface circuit for digital cross connection
US4855999A (en) * 1987-11-10 1989-08-08 Bell Communications Research, Inc. DTDM multiplexer with cross-point switch
US4967405A (en) * 1988-12-09 1990-10-30 Transwitch Corporation System for cross-connecting high speed digital SONET signals
US5040170A (en) * 1988-12-09 1991-08-13 Transwitch Corporation System for cross-connecting high speed digital signals
US4998242A (en) * 1988-12-09 1991-03-05 Transwitch Corp. Virtual tributary cross connect switch and switch network utilizing the same

Also Published As

Publication number Publication date
EP0437197A3 (en) 1993-01-13
JPH03207197A (en) 1991-09-10
EP0437197A2 (en) 1991-07-17
US5144297A (en) 1992-09-01
CA2033572C (en) 1994-10-04

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKLA Lapsed

Effective date: 20080103