WO1999066737A1 - Dispositif de gestion telecommunications comportant une liaison de communication de donnees - Google Patents

Dispositif de gestion telecommunications comportant une liaison de communication de donnees Download PDF

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Publication number
WO1999066737A1
WO1999066737A1 PCT/DE1999/001723 DE9901723W WO9966737A1 WO 1999066737 A1 WO1999066737 A1 WO 1999066737A1 DE 9901723 W DE9901723 W DE 9901723W WO 9966737 A1 WO9966737 A1 WO 9966737A1
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WO
WIPO (PCT)
Prior art keywords
management system
access node
software
channel
data
Prior art date
Application number
PCT/DE1999/001723
Other languages
German (de)
English (en)
Inventor
Harald Zottmann
Original Assignee
Nokia Telecommunications Oy
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 Nokia Telecommunications Oy filed Critical Nokia Telecommunications Oy
Priority to AU52785/99A priority Critical patent/AU5278599A/en
Publication of WO1999066737A1 publication Critical patent/WO1999066737A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges
    • H04Q3/0062—Provisions for network management
    • H04Q3/0087—Network testing or monitoring arrangements
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/1302—Relay switches
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/1304—Coordinate switches, crossbar, 4/2 with relays, coupling field
    • 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
    • H04Q2213/13174—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
    • H04Q2213/13203—Exchange termination [ET]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13204—Protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13208—Inverse multiplexing, channel bonding, e.g. TSSI aspects
    • 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
    • H04Q2213/13292—Time division multiplexing, TDM
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13349—Network management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13367—Hierarchical multiplexing, add-drop multiplexing
    • 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

Definitions

  • the invention relates to a telecommunications device in a digital telecommunications network, such as the ISDN, with a bidirectional data connection between the node management in a subscriber access node (AN) and the management system (MS) of a telecommunications network.
  • the management system uses such a connection for operating and maintenance functions (OA&M), for polling services or for transferring software for updating operating software in the access node.
  • OA&M operating and maintenance functions
  • the access node is connected to the subscriber exchange via a V.5 interface.
  • the invention In order to manage the resources of network devices in an ISDN network, such as, for example, for flexibly configuring the node management of access nodes (AN) for subscriber lines as part of the operating and maintenance functions, there are data connections between the management system of the telecommunications network and the network devices.
  • Such data connections are either implemented in the form of a separate data communication network (DCN), which provides separate data channels to the access nodes, or overhead channels are used by existing user channel connections.
  • DCN separate data communication network
  • certain individual user channels which are usually used for transmitting message signals of the subscriber connections, are also kept free for this purpose in some telecommunications networks.
  • existing solutions usually use either a separate data communication network (DCN) or overhead channels.
  • a separate data communication network must be set up either as a modem network or as a local data transmission network (LAN).
  • complex network elements such as large network nodes in the form of concentrators, are connected to the management system of the telecommunications network via a management interface (QAN), which can be a standardized Q3 interface, for example.
  • QAN management interface
  • the operator of the access node can use the management interface to adapt it to the respective tasks and operating conditions.
  • QAN interfaces have a relatively low data rate, so that it takes several hours, for example, to configure a new network node or to update the operating software through software upgrades of a node used.
  • Recommendations G. 964 and G. 965 do not contain standardized options for using overhead channels for data communication from the network management to the access node.
  • ITU-T recommendation G. 964 V-Interfaces at the Digital Local Exchange (LE) -V.5.1 -Interface (based on 2048 kbit / s) for the Support of Access Network (AN)", Geneva: ITU 1994 , defines an interface for ISDN subscriber exchanges and an access node, for example to a multiplexer, via a single 2048 kbit / s connection.
  • ITU-T recommendation G. 965 defines "V-Interfaces at the Digital Local Exchange (LE) -V.5.2-Interface (based on 2048 kBit / s) for the Support of Access Networks (AN)", Geneva: ITU 1995, an interface for ISDN subscriber exchanges with up to 16 separate 2048 kbit / s connections, which can be used on the subscriber side as individual 2048 kbit / s connections as well as a primary rate connection extensive networked apron devices in the form of subscriber line networks instead of conventional subscriber lines, and can be used for access node devices of any manufacturer without specific peculiarities of the manufacturer must be observed.
  • All 2048 kbit / s connections L 1 to L n have a uniform structure with regard to the transmission of control and signal data.
  • the time channel TS 0 is used for frame identification and frame synchronization in every connection.
  • Some of the 64 kbit / s time channels TS 1 to TS 31 are also required for so-called "communication channels” (C channels). These contain data packets of one or more "communication paths" (C branches), mostly of different types Data for signaling, protocol control and ISDN data from subscriber lines.
  • C channels contain data packets of one or more "communication paths" (C branches), mostly of different types Data for signaling, protocol control and ISDN data from subscriber lines.
  • the C channels are, depending on the configuration for the place of use, some of the time channels TS 15, TS 16, TS 31.
  • the remaining time channels are available as user channels and transmit message signals.
  • the C channels of the V.5 interfaces communicate via the connection access protocol LAPV5, which is standardized in ITU-T recommendations G. 964 and G. 965. This is based on the access protocol LAPD of the data channel in accordance with ITU-T recommendations Q.920 and Q.921.
  • the LAPV5 protocol and the C-channel data frame are more complex than with the D-channel because of the variety of C-branches and the addresses they contain.
  • the data channels Those of ISDN terminals or the data channels D 64 can therefore not communicate directly with the C channels of the V.5.2 interface due to the different data frame formats. This is only possible by adapting the protocol and frame structures using a mapping function and a frame relay function.
  • the data packets of the various C branches are separated or combined depending on the transmission direction and converted into the corresponding multiplex structure and protocol form.
  • the existing in an access node with a V.5 interface Protocol architecture shows the ITU-T recommendations G. 964 and G. 965, section 8.2 in conjunction with FIG. 6, and section 8.5.
  • the layer 2 protocol functions in the access node are divided into sub-layers. These are the so-called "Enveloping Function” sublayer LAPV5-EF, which supports the transition from and to the C-channel protocol, the "AN Frame Relay” sublayer AN-FR, which supports the transition between the LAPV5 data frame and the LAPD Data frame realized, and the "Data Link” sublayer LAPV5-DL.
  • FIG. 2 shows excerpts of the protocol architecture for the access node in the form of the function block V.5.2-PM.
  • the exchange manages the time channels available as user channels to the access node and dynamically assigns them according to the connection requirement.
  • the object of the invention is to show an inexpensive data connection between an access node and the management system, which has a high data rate, does not require any additional hardware and uses as little valuable useful channel capacity as possible.
  • an additional software component is installed in the access node according to the invention, which is referred to below as selection software.
  • the selection software forms, together with configuration software in the access node, a virtual ISDN terminal device which can be selected by the subscriber exchange on the connection layer via a unique address.
  • the management system sends a call to the virtual ISDN terminal.
  • the local exchange switches a nx 64Kbit / s connection between the management system and configuration software in the network access node for a limited time.
  • the subscriber exchange uses between the subscriber exchange and the access node at least one time channel of the interface, which it otherwise assigns as a user channel. This enables the management system to carry out bidirectional data communication with the configuration software of the access node with a high data rate.
  • FIG. 1 shows an extract from a telecommunications network with the network devices relevant to the invention
  • FIG. 2 Details to explain the function of the access node used
  • FIG. 1 shows a subscriber exchange LE and an access node AN, which are connected to one another via a transport network STM n.
  • the transport network STM n is designed as a ring as a synchronous transport module STM 1, but can also be implemented in a different structure and / or with different multiplex stages of the plesiochronous digital hierarchy or the synchronous digital hierarchy.
  • the network transitions from and to the lower hierarchical level implement branch multiplexers ADM, so-called add-drop multiplexers.
  • the interface between the local exchange LE and the transport network contains time-division multiplex connections based on the ITU-T
  • Recommendations G 703 and G 704 with data rates of at least 2048 kbit / s and pulse frame structures with a duration of 125 ⁇ s.
  • the access node AN and the subscriber exchange LE are connected via the transport network STM n to an interface V.5.2 with n ⁇ 2048 kbit / s connections L 1 to L n, as described above.
  • Each user channel connection between the access node AN and the telecommunications network runs in a separate time channel as a transparent one Connection through a switching network GSW in the local exchange LE.
  • the switching network GSW forms the access to the time channels of the interface V.5.2 on the side of the telecommunication network and mediates subscriber connections with terminals TE 1 or TE 2 of the access node AN.
  • access to individual time channels of the interface V.5.2 takes place through the interface device V.5-IF, which, depending on the communication direction, multiplexes or demultiplexes the time channels of the interface V.5.2, so that each time channel is available separately regardless of the content is.
  • the transport network can have any shape between these two access points.
  • Configuration software CFG-SW in the form of management applications and programs for updating the operating software are usually installed in an access node device for the operator.
  • the operator thus implements the operation and maintenance function (OA&M) for the node.
  • OA&M operation and maintenance function
  • FIG. 1 shows, using software, a virtual ISDN terminal TE-v installed.
  • another software component is installed, the DU-SW selection software.
  • the dialing software DU-SW receives its own address in order to be able to dial the virtual ISDN terminal TE-v from the subscriber exchange LE via a C-channel. This address is assigned in the data link layer (layer 2, according to the OSI reference model).
  • the management system MS is connected to the subscriber line switching center LE via a standard ISDN connection n x 64 KBit / s.
  • the connection can be implemented either as a base channel connection or as a primary rate connection.
  • FIG. 2 shows further details of the exemplary embodiment with selected functional units of the access node AN with hardware and software components which are relevant for the implementation of the invention.
  • the access to the C channels of the interface V.5.2 takes place in the access node via a functional unit, which is referred to below as the protocol machine V.5.2-PM and is connected to the interface device V.5-IF.
  • the protocol machine V.5.2-PM corresponds to the known version according to the ITU-T recommendations G.964 and G.965, FIG. 6 and remains unchanged when used according to the invention compared to conventional use.
  • the V.5.2-PM protocol machine realizes bidirectional data communication between the various sub-layers mentioned at the beginning by adapting the access protocols and the data frame structure.
  • the selection software DU-SW is designed so that the virtual ISDN subscriber connection TE-v is reached via a 16 Kbit / s data channel Die.
  • a data connection between the C channel C ⁇ of the interface V.5.2, on which the call from the management system MS arrives, and this D channel D ⁇ 6 must be established.
  • the selection is made from C-channel C ⁇ 4 via the sub-layer LAPV5-EF.
  • the complex LAPV5 data multiplex of the C channel with the data packets from different C branches is broken down into individual C branches in the mapping function and distributed to the other sublayers according to the layer 2 addresses.
  • the AN frame relay function AN-FR converts the call of the virtual ISDN terminal device contained in a C branch into a D channel signal in LAPD format.
  • the address of the virtual ISDN terminal device in layer 2 consists of a number with 13 bits in the number range 0 ... 8175.
  • the invention works as follows:
  • the management system MS sends a call to the address of the virtual ISDN terminal TE-v via the ISDN signaling, which the dialing software DU-SW accepts.
  • the subscriber switching center LE between the management system MS and the interface device V.5-IF of the access node AN then establishes a temporary data connection on any time channel Lx-TSy of the interface V.5.2 that is otherwise used as a useful channel, and the configuration software CFG-SW and the management system MS enter the desired data communication.
  • the switching network GSW In addition to subscriber connections with conventional terminals TE 1 or TE 2, the switching network GSW also mediates a data connection between the management system MS and the virtual ISDN terminal TE-v via a time channel Lx-TSy of interface V.5.2, which the Subscriber exchange LE flexibly managed as a user channel.
  • the dialing software in the access node can be requested by the subscriber exchange LE to provide a bundle of 64 kbit / s connection to increase the transmission speed.
  • the selection software establishes a temporary data connection that extends over several time channels in the V.5 interface.
  • any type of data communication can be carried out between the management system and the node management for operational and maintenance tasks, polling services and upgrades of the operating software, the transmission speed being flexibly adaptable to the application.
  • Various known data transmission services can be used for updating the operating software, such as, for example, the so-called “File Transfer Access and Management - FTAM” according to the recommendation ISO 8571 or the "File Transfer Protocol - FTP" known from the Internet. In this way, for example, the operating software or the configuration software CFG-SW of the node can be updated.
  • a major advantage of the invention is that if necessary, without changing the standardized V5 protocol, ISDN signaling enables a bidirectional n x 64 kbit / s data connection to be set up very quickly on one or more 64 kbit / s user channels.
  • the connection capacity required for this is available outside of temporary data communication for user channels.
  • the operator of an access node device only has to install the selection software DU-SW and adapt the configuration software to the invention.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephonic Communication Services (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

L'invention concerne un dispositif de télécommunication destiné à un réseau de télécommunication numérique, comprenant un poste de commutation d'abonné (LE), un noeud d'accès (AN) et un système de gestion (SS) destiné au réseau de communication. Dans ce dispositif, une liaison de communication de données est établie temporairement, en cas de besoin, par l'intermédiaire d'un ou de plusieurs canaux de base (Lx-TSy), entre le dispositif de gestion du noeud d'accès (AN) et ledit système de gestion. A cet effet, un dispositif terminal (ISDN) (TE-v) virtuel est installé dans le noeud d'accès (AN), lequel établit la connexion avec le système de gestion pour permettre une communication de données par l'intermédiaire du poste de commutation d'abonnés (LE). Le raccordement d'abonné (ISDN) (TE-v) est constitué d'un logiciel de mise en connexion (DU-SW) qui peut être mis en connexion du côté du système de gestion (MS) par l'intermédiaire d'une adresse univoque, et d'un logiciel de configuration (CFG-SW) qui, dans le noeud d'accès (AN), assure les fonction d'exploitation et de maintenance (OA & M) et actualise le logiciel d'exploitation. Le dispositif selon l'invention permet, en particulier dans une interface V.5, d'obtenir une vitesse de communication de données élevée pour des services de transfert de fichiers de données selon FTP (TCP/IP) ou FTAM (OSI).
PCT/DE1999/001723 1998-06-17 1999-06-12 Dispositif de gestion telecommunications comportant une liaison de communication de donnees WO1999066737A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU52785/99A AU5278599A (en) 1998-06-17 1999-06-12 Telecommunication management device with data link

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19826631.6 1998-06-17
DE1998126631 DE19826631C2 (de) 1998-06-17 1998-06-17 Telekommunikationseinrichtung mit einer Datenverbindung

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WO1999066737A1 true WO1999066737A1 (fr) 1999-12-23

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DE (1) DE19826631C2 (fr)
WO (1) WO1999066737A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1093278A2 (fr) * 1999-10-12 2001-04-18 Nec Corporation Un réseau d'accès basé sur le Protocol Internet

Families Citing this family (1)

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Publication number Priority date Publication date Assignee Title
US6263068B1 (en) 1998-11-23 2001-07-17 Lucent Technologies Inc. Remote subscriber line unit provisioning system for use with voice communication facilities

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WO1996038968A1 (fr) * 1995-06-02 1996-12-05 Dsc Communications Corporation Telechargement de logiciel pour terminal d'abonne de systeme de telecommunications sans fil
EP0763953A2 (fr) * 1995-09-13 1997-03-19 Siemens Aktiengesellschaft Procédé pour le chargement de software dans des systèmes de communication équipés de dispositif décentralisés et non-redondants
WO1998009420A1 (fr) * 1996-08-27 1998-03-05 Siemens Schweiz Ag Procede de surveillance et de verification des raccordements d'un reseau rnis de telecommunication
EP0901251A2 (fr) * 1997-09-08 1999-03-10 Fujitsu Limited Un système pour exploiter et maintenir un noeud d'accès

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DE19609889C2 (de) * 1996-03-13 1999-02-04 Ics Intelligent Communication Computer-Netzwerk und Verfahren zu dessen Betreiben

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Publication number Priority date Publication date Assignee Title
WO1996038968A1 (fr) * 1995-06-02 1996-12-05 Dsc Communications Corporation Telechargement de logiciel pour terminal d'abonne de systeme de telecommunications sans fil
EP0763953A2 (fr) * 1995-09-13 1997-03-19 Siemens Aktiengesellschaft Procédé pour le chargement de software dans des systèmes de communication équipés de dispositif décentralisés et non-redondants
WO1998009420A1 (fr) * 1996-08-27 1998-03-05 Siemens Schweiz Ag Procede de surveillance et de verification des raccordements d'un reseau rnis de telecommunication
EP0901251A2 (fr) * 1997-09-08 1999-03-10 Fujitsu Limited Un système pour exploiter et maintenir un noeud d'accès

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Title
JAMES K ET AL: "TOWARDS A GLOBAL V5 INTERFACE", PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC '93), vol. 2, 23 May 1993 (1993-05-23) - 26 May 1993 (1993-05-26), GENEVA, pages 873 - 877, XP000371206, ISBN: 0-7803-0950-2 *
PURITSCHER N: "DER DIREKTE DRAHT ZUM KUNDEN", NTZ NACHRICHTENTECHNISCHE ZEITSCHRIFT, vol. 50, no. 11, 1 January 1997 (1997-01-01), pages 60,61, XP000723934, ISSN: 0027-707X *
ROZENBLIT M: "O,A&M CAPABILITIES FOR SWITCHING SOFTWARE MANAGEMENT", PROCEEDINGS OF THE GLOBAL TELECOMMUNICATIONS CONFERENCE (GLOBECOM '93), vol. 1, 29 November 1993 (1993-11-29) - 2 December 1993 (1993-12-02), HOUSTON, pages 357 - 361, XP000428082 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1093278A2 (fr) * 1999-10-12 2001-04-18 Nec Corporation Un réseau d'accès basé sur le Protocol Internet
EP1093278A3 (fr) * 1999-10-12 2002-11-27 Nec Corporation Un réseau d'accès basé sur le Protocol Internet

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AU5278599A (en) 2000-01-05
DE19826631C2 (de) 2001-05-10
DE19826631A1 (de) 1999-12-23

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