WO2000067520A1 - Systeme et procede d'identification automatique d'equipement dans un systeme de commutation a interfonctionnement - Google Patents

Systeme et procede d'identification automatique d'equipement dans un systeme de commutation a interfonctionnement Download PDF

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Publication number
WO2000067520A1
WO2000067520A1 PCT/US2000/012125 US0012125W WO0067520A1 WO 2000067520 A1 WO2000067520 A1 WO 2000067520A1 US 0012125 W US0012125 W US 0012125W WO 0067520 A1 WO0067520 A1 WO 0067520A1
Authority
WO
WIPO (PCT)
Prior art keywords
exchange
identification information
equipment unit
circuit
interworking equipment
Prior art date
Application number
PCT/US2000/012125
Other languages
English (en)
Inventor
Lars Tovander
Original Assignee
Ericsson 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 Ericsson Inc. filed Critical Ericsson Inc.
Priority to AU46982/00A priority Critical patent/AU4698200A/en
Priority to EP00928802A priority patent/EP1175808A1/fr
Publication of WO2000067520A1 publication Critical patent/WO2000067520A1/fr

Links

Classifications

    • 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
    • H04Q11/0478—Provisions for broadband connections
    • 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
    • H04Q11/0457—Connection protocols
    • 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
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H04L2012/5614—User Network Interface
    • H04L2012/5618—Bridges, gateways [GW] or interworking units [IWU]
    • 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
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H04L2012/5685—Addressing issues
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13103—Memory
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13109—Initializing, personal profile
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/1329—Asynchronous transfer mode, ATM
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13389—LAN, internet
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13396—Signaling in general, in-band signalling

Definitions

  • the present invention relates generally to telecommunications systems and methods for transmitting data between exchanges through interworking equipment, and specifically to identification of interworking equipment for transmission of the data between an exchange and the interworking equipment.
  • End users operating terminals communicate with each other through a communications channel called a physical circuit.
  • These physical circuits are also known as channels, links, lines and trunks.
  • the physical circuits are terminated at intermediate points at exchanges that provide relay services on to another circuit. These exchanges are commonly known as switches, routers, bridges and gateways.
  • IWU Interworking Equipment Unit
  • ATM Asynchronous Transfer Mode
  • IP Internet Protocol
  • the IWUs 50a and 50b provide the access to this transport network 30 for circuit connections.
  • the introduction of the IWUs 50 adds a level of complexity to the exchanges
  • the present invention is directed to telecommunications systems and methods for enabling an exchange to automatically read the identification (or address) of an Interworking Equipment Unit (IWU) physical circuit over the physical circuit itself.
  • IWU Interworking Equipment Unit
  • the exchange detects the presence of the IWU when the physical circuit becomes synchronized. Thereafter, the exchange sends a request for identification to the IWU over the physical circuit.
  • the IWU responds with the identification, which is saved in a data record assigned to the physical circuit in the exchange.
  • the exchange uses this equipment identification when communicating with the IWU.
  • FIGURE 1 illustrates a conventional connection between two exchanges
  • FIGURE 2 illustrates connection between two exchanges through Interworking Equipment Units (IWUs) and a transport network;
  • IWUs Interworking Equipment Units
  • FIGURE 3 illustrates the physical circuit and control link connections between an exchange and an IWU;
  • FIGURE 4 illustrates the transmission of identification information from an IWU;
  • FIGURE 5 illustrates the steps for transmitting the identification information shown in FIGURE 4 of the drawings.
  • an exchange 20 may have multiple physical circuit connections 40a-n to various equipment 55a-n within an IWU 50, in order to connect to the many different types of transport networks 30a-n.
  • One physical circuit 40a may connect the exchange 20 to ATM equipment 55a in the IWU 50, in which the ATM equipment 55a converts the voice and/or data received from the exchange 20 over the physical circuit 40a into ATM protocol packets, and transmits this converted voice and/or data through the ATM transport network 30a.
  • Another physical circuit 40b may connect the exchange 20 to Internet equipment 55b in the IWU 50 for conversion and transport of the voice and/or data through the Internet transport network 30b.
  • Each end of the physical circuit 40a-n is connected to the exchange 20 or IWU 50 through a respective port 25a-n or 60a-n, which is the access point to the exchange 20 or IWU 50, respectively.
  • Each of these physical circuits 40a-n may utilize any type of transport technology for transmitting the voice and/or data to the IWU 50.
  • the physical circuits 40a-n may use Tl or El communications protocols to digitally transmit the data to the IWU 50. Tl is used in North America, whereas El is used in Europe. Even though El is similar to Tl, El and Tl are not compatible.
  • T 1 /E 1 lines digitize voice signals through pulse code modulation (PCM), and multiplex twenty-four/thirty-two digitized voice and data signals together onto one physical Time Division Multiplexed (TDM) circuit.
  • PCM pulse code modulation
  • TDM Time Division Multiplexed
  • the physical circuits 40a-n may transmit the data using the Synchronous Optical Network/Synchronous Digital Hierarchy (SONET/SDH) transport technology.
  • SONET/SDH communications protocol is based on digital synchronous transmission of voice and/or data over an optical fiber in a standard format called the Synchronous Transport Signal (STS).
  • STS Synchronous Transport Signal
  • the transport technology used for the transmission of voice and/or data over the physical circuits 40a-n between the exchange 20 and the IWU 50 is not limited to Tl, El or SONET/SDH, but can include any transport technology available.
  • the number of physical circuits 40a-n and the transport technology used for each of these physical circuits 40a-n can vary.
  • the exchange 20 Before the exchange 20 can begin to transmit the voice and/or data to the IWU 50 over one of the physical circuits 40a-n, the exchange must first establish a call connection with a destination exchange (not shown) through the IWU 50. In order to establish such a connection, a signaling message 75 is transmitted from the exchange 20 to the IWU 50 over a separate control link 70, requesting the IWU 50 to establish a call connection with a particular destination exchange through a particular transport network 30a-n. The signaling message 75 also contains an identification of the particular port 60a-n connected to the physical circuit 40a-n that the exchange 20 would like to use to transmit the voice and/or data to the IWU 50.
  • TCP/IP Transmission Control Protocol/Internet Protocol
  • TCP/IP Transmission Control Protocol/Internet Protocol
  • This identification information has to be stored within a database 10 within the exchange 20. This configuration process has typically been performed manually by physical circuit personnel. The personnel must manually check the identification of the port 60a-n connected to the physical circuit 40a-n in the IWU 50 and assign this identification information to the port 25a- n connected to that physical circuit 40a-n in the exchange 20. Thus, the personnel must manually enter the IWU port 60a-n identification information associated with each exchange port 25a-n into the database 10.
  • TCP/IP Transmission Control Protocol/Internet Protocol
  • the exchange 20 accesses the database 10, retrieves the IWU port 60a-n identification information for the desired exchange port 25a-n and sends a signaling message 75 to the IWU 50, using the port 60a-n identification information.
  • the identification information may be entered incorrectly by the personnel, and therefore, a call connection may not be able to be established.
  • the configuration process is labor intensive, which can be costly to the exchange 20 owner.
  • the IWU 50 can provide the port 60 identification information to the exchange 20 directly, without the aid of physical circuit personnel.
  • FIGURE 4 of the drawings which will be described in connection with the steps described in the signaling diagram of FIGURE 5 of the drawings, when equipment
  • the exchange 20 detects the presence of the equipment 55 when the physical circuit 40 becomes synchronized (step 510). Thereafter, the exchange 20 sends a request message 85 requesting identification of the new equipment 55 to the IWU 50 over the physical circuit 40 (step 520). In response to the request message 85, the
  • IWU 20 sends identification information 80, e.g.. the address of the IWU access point (port) 60 connected to the particular physical circuit 40, to the exchange 20 over the physical circuit 40 (step 530).
  • identification information 80 e.g.. the address of the IWU access point (port) 60 connected to the particular physical circuit 40
  • the request message 85 and identification information 80 can be transmitted between the exchange 20 and the IWU 50 over a Facility Data Link.
  • the physical circuit 40 is an El
  • one or more of the spare bits in timeslot 0 can be used to transmit the request message 85 and identification information 80 between the exchange 20 and the IWU 50.
  • a Data Communication Channel in the section overhead can be used for sending the request message 85 and transferring the identification information 80 between the exchange 20 and the IWU 50.
  • the exchange 20 saves the identification information 80 in a data record field 15 assigned to the exchange port 25 associated with the particular physical circuit 40 within the database 10 (step 540). It should be noted that the identification information 80 does not need to be checked for correctness since it is derived from the physical circuit 40 itself.
  • the exchange 20 uses the identification information 80 when communicating with the IWU 50 over the control link 70 (step 550). For example, when the exchange sends a signaling message 75, the signaling message 75 includes the identification information 80, which is used to identify the particular port 60 within the IWU 50 that the message 75 is directed to. If the physical circuit 40 is disconnected and re-established, the same procedure described in FIGURES 4 and 5 above is followed. This allows for simple automatic reconfiguration of the physical circuits 40.
  • the data record field 15 associated with the exchange port 25 in the database 10 is automatically updated with the new port identification for the second equipment, and can immediately start to use it.
  • the IWU 50 can provide the identification information 80 directly to the exchange 20, the identification information 80 can be automatically stored correctly.
  • the IWU 50 can inform the exchange 20 that "this particular Tl port can be controlled using the following IP address 194.234.123.44:23.” The exchange 20 then uses this IP address in all communications to the IWU 50 for the particular Tl port.
  • the exchange 20 can send a signaling message 75 to IP address 194.234.123.4:23 over the control link 70 ordering an ATM Adaption Layer 1 (AAL1) connection to be set up towards a particular address, with a particular bandwidth and particular ATM characteristics, ej*., Quality of Service (QoS).
  • AAL1 ATM Adaption Layer 1
  • QoS Quality of Service

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephonic Communication Services (AREA)

Abstract

L'invention concerne un système et un procédé de télécommunications permettant à un commutateur (20) de lire automatiquement l'identification (ou l'adresse) d'un circuit (60) physique d'équipement d'interfonctionnement (IWU) (50) sur le circuit (40) physique même. Lorsqu'un IWU est connecté au commutateur sur un circuit physique, le commutateur détecte la présence de l'IWU au moment où le circuit physique est synchronisé. Le commutateur envoie ensuite à l'IWU une demande (85) d'identification de la connexion sur le circuit physique. L'IWU répond en envoyant l'identification (80), qui est sauvegardée dans un enregistrement de données affecté au circuit physique du commutateur. Le commutateur utilise cette identification lorsqu'il communique avec l'IWU.
PCT/US2000/012125 1999-05-03 2000-05-03 Systeme et procede d'identification automatique d'equipement dans un systeme de commutation a interfonctionnement WO2000067520A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU46982/00A AU4698200A (en) 1999-05-03 2000-05-03 System and method for automatic identification of equipment within an interworking switching system
EP00928802A EP1175808A1 (fr) 1999-05-03 2000-05-03 Systeme et procede d'identification automatique d'equipement dans un systeme de commutation a interfonctionnement

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US30387699A 1999-05-03 1999-05-03
US09/303,876 1999-05-03

Publications (1)

Publication Number Publication Date
WO2000067520A1 true WO2000067520A1 (fr) 2000-11-09

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/012125 WO2000067520A1 (fr) 1999-05-03 2000-05-03 Systeme et procede d'identification automatique d'equipement dans un systeme de commutation a interfonctionnement

Country Status (3)

Country Link
EP (1) EP1175808A1 (fr)
AU (1) AU4698200A (fr)
WO (1) WO2000067520A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5521914A (en) * 1994-07-21 1996-05-28 Newbridge Networks Corporation Switched access to frame relay
EP0822731A2 (fr) * 1996-07-31 1998-02-04 Alcatel Procédé, dispositif d'interface et centrale de commutation pour convertir un premier protocole de signalisation (RNIS) dans un deuxième protocole de signalisation (ATM)
EP0854608A2 (fr) * 1996-12-30 1998-07-22 Compaq Computer Corporation Commutateur de réseau avec système de mémoire partagé
US5796736A (en) * 1994-07-19 1998-08-18 Nec Corporation ATM network topology auto discovery method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5796736A (en) * 1994-07-19 1998-08-18 Nec Corporation ATM network topology auto discovery method
US5521914A (en) * 1994-07-21 1996-05-28 Newbridge Networks Corporation Switched access to frame relay
EP0822731A2 (fr) * 1996-07-31 1998-02-04 Alcatel Procédé, dispositif d'interface et centrale de commutation pour convertir un premier protocole de signalisation (RNIS) dans un deuxième protocole de signalisation (ATM)
EP0854608A2 (fr) * 1996-12-30 1998-07-22 Compaq Computer Corporation Commutateur de réseau avec système de mémoire partagé

Also Published As

Publication number Publication date
EP1175808A1 (fr) 2002-01-30
AU4698200A (en) 2000-11-17

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