WO1998059454A9 - Extension du transport de signaux dds par l'intermediaire d'installations chargees ou prechargees - Google Patents

Extension du transport de signaux dds par l'intermediaire d'installations chargees ou prechargees

Info

Publication number
WO1998059454A9
WO1998059454A9 PCT/US1998/013948 US9813948W WO9859454A9 WO 1998059454 A9 WO1998059454 A9 WO 1998059454A9 US 9813948 W US9813948 W US 9813948W WO 9859454 A9 WO9859454 A9 WO 9859454A9
Authority
WO
WIPO (PCT)
Prior art keywords
dds
ocu
transceivers
dsu
location
Prior art date
Application number
PCT/US1998/013948
Other languages
English (en)
Other versions
WO1998059454A2 (fr
WO1998059454A3 (fr
Inventor
Laurence L Sheets
Francis X Garcia
Original Assignee
Teltrend Inc
Laurence L Sheets
Francis X Garcia
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 Teltrend Inc, Laurence L Sheets, Francis X Garcia filed Critical Teltrend Inc
Priority to EP98934273A priority Critical patent/EP0920754A2/fr
Priority to AU83837/98A priority patent/AU8383798A/en
Publication of WO1998059454A2 publication Critical patent/WO1998059454A2/fr
Publication of WO1998059454A3 publication Critical patent/WO1998059454A3/fr
Publication of WO1998059454A9 publication Critical patent/WO1998059454A9/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/14—Channel dividing arrangements, i.e. in which a single bit stream is divided between several baseband channels and reassembled at the receiver

Definitions

  • FIG. 4a Another significant limitation of the DDS network is related to its bandwidth requirements.
  • OCUs and DSUs typically communicate over the two-simplex circuits with bipolar return to zero (RTZ) signaling shown in Figure 4a.
  • Logical ones are represented by alternating high and low voltage pulses where the signal returns to an intermediate reference voltage at the end of a bit period.
  • Logic zeros are represented by the absence of a pulse.
  • Figure 4b shows a sequence of logic values (1101) in the RTZ format.
  • Figure 4c shows the spectral properties of a full rate 64 K bps DDS RTZ signal. As seen in Figure 4c, the first spectral null occurs at 64 KHz.
  • the ER-DP interfaces to the network in the same manner as an OCU-DP — by plugging into a D4, SLC5, DLC, or SLC 96 channel bank and providing a DS-0 type serial data stream to interface with the backplane of the channel bank.
  • the ER-DP may also be configured with alternative network interfaces such as DSX-0, if appropriate for the particular DDS implementation.
  • the central office unit will be referred to hereinafter as an ER-OCU.
  • the ER-DSU provides an interface to the customer's terminal equipment such as an RS-232, V.35, or other appropriate standardized interface.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

On décrit un procédé et un appareil permettant d'établir des services de communication de données numériques (DDS), entre des premier et deuxième sites reliés par des câbles standard, le procédé consistant à convertir des signaux DDS standard en deux flux de données qui sont envoyés entre deux endroits par deux canaux de communication en duplex intégral. Les canaux sont établis entre deux émetteurs-récepteurs de communication en duplex intégral situé au premier endroit et deux émetteurs-récepteurs de communication en duplex intégral situés au deuxième endroit. A chaque endroit, les signaux reçus sont recombinés en un unique flux de données représentant des services de communication DDS qui sont disponibles pour l'équipement d'extrémité de voies au site du fournisseur de service (par exemple un équipement D4) et pour l'équipement terminal du consommateur. Les émetteurs-récepteurs établissent la communication par l'intermédiaire de formats de modulation utilisant la bande de fréquence vocale, par conséquent ils sont capables de fonctionner sur des longueurs de câbles supérieures et sur des câbles chargés. Les dispositifs situés au central comportent une interface réseau, un séquenceur et deux émetteurs-récepteurs. L'interface réseau sert à connecter les dispositifs au réseau. L'interface réseau communique avec le séquenceur, ce dernier agissant en temps que multiplexeur/démultiplixeur étant donné qu'il sépare le flux de données de transmission en deux flux de données séparés respectivement associés à chacun des émetteurs-récepteurs et étant donné qu'il reçoit deux flux de données provenant des émetteurs-récepteurs et qu'il les combine en un unique flux de données de réception qui est envoyé à l'interface réseau. Les dispositifs situés à distance sont configurés de manière similaire excepté pour ce qui concerne leur interface qui est adaptée pour être connectée à l'équipement de traitement de données de l'utilisateur.
PCT/US1998/013948 1997-06-25 1998-06-24 Extension du transport de signaux dds par l'intermediaire d'installations chargees ou prechargees WO1998059454A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP98934273A EP0920754A2 (fr) 1997-06-25 1998-06-24 Extension du transport de signaux dds par l'intermediaire d'installations chargees ou prechargees
AU83837/98A AU8383798A (en) 1997-06-25 1998-06-24 Extended range dds transport via loaded or unloaded facilities

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US88268197A 1997-06-25 1997-06-25
US08/882,681 1997-06-25

Publications (3)

Publication Number Publication Date
WO1998059454A2 WO1998059454A2 (fr) 1998-12-30
WO1998059454A3 WO1998059454A3 (fr) 1999-03-25
WO1998059454A9 true WO1998059454A9 (fr) 1999-05-06

Family

ID=25381113

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/013948 WO1998059454A2 (fr) 1997-06-25 1998-06-24 Extension du transport de signaux dds par l'intermediaire d'installations chargees ou prechargees

Country Status (3)

Country Link
EP (1) EP0920754A2 (fr)
AU (1) AU8383798A (fr)
WO (1) WO1998059454A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1276262A1 (fr) 2001-07-10 2003-01-15 Lucent Technologies Inc. Réseau de communication en anneau avec séparateur de données dans les noeuds
WO2008114351A1 (fr) 2007-03-16 2008-09-25 Fujitsu Limited Station de base, dispositif de commande sans fil et dispositif sans fil

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4864567A (en) * 1988-05-04 1989-09-05 The United States Of America As Represented By The Secretary Of The Navy High throughput data communication system
AU2373092A (en) * 1991-07-17 1993-02-23 Digital Access Corporation Apparatus for high speed data transfer
WO1993007727A1 (fr) * 1991-10-11 1993-04-15 Digital Access Corporation Procede et appareil de mise en parallele par numerotation
US5390239A (en) * 1994-03-17 1995-02-14 Morris; Gregory A. Method for increasing digital data throughput over telephone lines
US5642391A (en) * 1995-12-15 1997-06-24 Conklin Instrument Corporation Method and apparatus for monitoring channel performance on a channel using alternate mark inversion protocols
US5809070A (en) * 1996-02-27 1998-09-15 Flat Connections, Inc. High speed data communications using multiple low speed modems
US6198749B1 (en) * 1997-04-03 2001-03-06 Nortel Networks Limited System for inverse multiplexing analog channels

Also Published As

Publication number Publication date
WO1998059454A2 (fr) 1998-12-30
WO1998059454A3 (fr) 1999-03-25
EP0920754A2 (fr) 1999-06-09
AU8383798A (en) 1999-01-04

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