WO2000064135A1 - Interface optimisee entre un reseau d'acces et un dispositif de reseau - Google Patents

Interface optimisee entre un reseau d'acces et un dispositif de reseau Download PDF

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Publication number
WO2000064135A1
WO2000064135A1 PCT/DE2000/001126 DE0001126W WO0064135A1 WO 2000064135 A1 WO2000064135 A1 WO 2000064135A1 DE 0001126 W DE0001126 W DE 0001126W WO 0064135 A1 WO0064135 A1 WO 0064135A1
Authority
WO
WIPO (PCT)
Prior art keywords
access network
transmission
switching device
subscriber
interface
Prior art date
Application number
PCT/DE2000/001126
Other languages
German (de)
English (en)
Inventor
Patrick Kleiner
Stefan KÜCHENHOFF
Hanspeter Ruckstuhl
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2000064135A1 publication Critical patent/WO2000064135A1/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
    • H04Q11/0435—Details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13034—A/D conversion, code compression/expansion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/1309—Apparatus individually associated with a subscriber line, line circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13096—Digital apparatus individually associated with a subscriber line, digital line circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13098—Mobile subscriber
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13179—Fax, still picture
    • 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
    • H04Q2213/13298—Local loop systems, access network
    • 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

Definitions

  • the invention relates to a communication system with an access network for connecting a plurality of subscriber connections, a switching device for establishing and maintaining a telecommunication connection between one of the subscriber connections and any other subscriber connection, and a transmission line between the access network and the switching device.
  • the invention relates to the interface between the access network, to which a number of subscriber connections for telephone terminals, fax machines or the like are coupled, and a switching device (local exchange) which is used to switch calls (voice and data services) serves one terminal to another terminal.
  • a switching device local exchange
  • a simple, non-concentrating interface is usually used as the interface between an access network and a switching device if the expected traffic volume is comparatively low.
  • Such an interface has an interface control protocol for managing the interface, a subscriber line status protocol for transmitting the information about each subscriber line connected to the access network, i.e. whether the line is activated or not, and a switching protocol for transmitting those necessary for the transfer of a call Information such as the number, information on whether a subscriber line is busy or not, etc.
  • the disadvantage of this simple, non-concentrating interface is that the connection line between the access network and the switching system is not optimally used. can, because a certain transmission capacity must be kept available for each subscriber connection regardless of its use.
  • this multiple interface has a protocol for allocating the time slots, a protocol for monitoring and identifying the individual communication connections (PCM routes) and a protocol for setting up an equivalent circuit that is used when a switched connection fails.
  • PCM routes a protocol for monitoring and identifying the individual communication connections
  • a protocol for setting up an equivalent circuit that is used when a switched connection fails Such a concentrating multiple interface is shown schematically in FIG. 2.
  • the access network 1 is connected to the switching device 2 via a plurality of connections 4. Due to the larger number of connections, for example 16 connections, and the equivalent circuit protocol, the multi-connection interface offers high capacity and high reliability.
  • the implementation of this interface causes high expenditure and high costs and is therefore often not worthwhile for small access networks.
  • the invention is therefore based on the object of creating a telecommunications system in which a connection is established between an access network and an associated switching facility, which enables good use of the network infrastructure, but requires as little effort as possible for the specification and implementation of the interface.
  • the object is achieved by the telecommunications system defined in claim 1, the access network and the switching device being designed such that a concentrated trated data transmission in time-division multiplexing is enabled on only a single transmission line between the access network and the switching device. Due to the concentrated data transmission in time-division multiplex operation, a multiple of subscribers can be served in comparison to the known single connection and the network infrastructure can thus be optimally used. On the other hand, since there is only one transmission line, no protocols for monitoring and identifying the individual lines and also no protocols for setting up an equivalent circuit are required. The capacity is therefore not as high as with the multiple connection interface, but the effort for implementing the telecommunication system according to the invention is considerably less. This is particularly important in rural areas with little traffic and a low number of participants. In addition, an existing simple interface can only be upgraded by implementing new software so that the existing network infrastructure can continue to be used. An improved telecommunications system according to the invention is thus very quickly available. The maintenance effort is also significantly reduced compared to the multiple connection interface.
  • the transmission interface between the access network and the switching device preferably has an interface control protocol for managing the data transmission between the access network and the switching device, a subscriber line status protocol for information on the status of the connected subscriber lines, a switching protocol for the transmission of information necessary for the transmission of a call request and a Time slot allocation protocol for assigning the data transmission time slots to the supply line.
  • the transmission line preferably enables transmission according to the PCM-30 standard.
  • the subscriber connections can be connections for analog or digital terminals. te, for example ISDN telephone systems, fax machines or subscriber connections for radio telephones, for example according to the DECT standard.
  • FIG. 1 is a schematic illustration for explaining a telecommunication system according to the invention.
  • FIG. 2 is a schematic illustration for explaining a known telecommunications system with a multiple connection interface.
  • a plurality of subscriber connections 3 are connected to an access network 1 and can be provided with analog or digital telecommunication terminals. These can be voice transmission devices such as telephones or radio telephones, or data transmission terminals such as fax machines or personal computers.
  • the access network 1 is connected via a single transmission line 4 to a switching device 2, which in turn is connected to a telecommunication network via further lines 5.
  • the transmission line 4 is preferably a PCM (Pulse Code Modulation) line.
  • Access network 1 and switching device 2 are designed in such a way that the data transmission between these two units is concentrated by providing specific time slots for one connection each, so that several calls (voice and data services) can be conducted simultaneously via one line 4 and so that a total of more participants can be served than the number of time slots on line 4 would allow.
  • the transmission interface between access network 1 and switching device 2 has an interface control protocol for managing the interface, a subscriber connection protocol for transmitting information about the status of the subscribers connected to the access network 1, for example whether the connection is activated and what its number is, a switching protocol for the transmission of a Transfer of a conversation of important information such as B. whether a connection is busy or not, and a time slot allocation protocol for allocating the respective data transmission time slots of line 4 to the individual connections.
  • the telecommunication system according to the invention thus enables an existing access network to be upgraded with comparatively little effort simply by implementing the interface software which allows data transmission in time-division multiplexing.
  • the capacity of the existing transmission line is used much better, and costly and maintenance-intensive management of a large number of transmission lines, as in the multiple connection interface according to FIG. 2, can be avoided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

Un système de télécommunication présente un réseau d'accès (1) destiné à être connecté avec plusieurs lignes d'abonnés (3), un dispositif de réseau (2) destiné à produire et à maintenir une liaison de télécommunication entre l'une des lignes d'abonnés (3) et une autre ligne quelconque et une ligne de transmission (4) entre le réseau d'accès (1) et le dispositif de réseau (2). Le réseau d'accès (1) et le dispositif de réseau (2) sont réalisés de telle façon qu'un transfert de données concentré en fonctionnement multiplex temporel ne soit possible que dans une seule ligne de transmission (4) entre le réseau d'accès (1) et le dispositif de réseau (2). L'invention permet de réaliser, avec une faible dépense, la connexion d'un réseau d'accès à un centre de commutation avec utilisation optimale des ressources de transmission.
PCT/DE2000/001126 1999-04-15 2000-04-12 Interface optimisee entre un reseau d'acces et un dispositif de reseau WO2000064135A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19917062.2 1999-04-15
DE1999117062 DE19917062C2 (de) 1999-04-15 1999-04-15 Optimierte Schnittstelle zwischen Zugriffsnetzwerk und Vermittlungseinrichtung

Publications (1)

Publication Number Publication Date
WO2000064135A1 true WO2000064135A1 (fr) 2000-10-26

Family

ID=7904685

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2000/001126 WO2000064135A1 (fr) 1999-04-15 2000-04-12 Interface optimisee entre un reseau d'acces et un dispositif de reseau

Country Status (2)

Country Link
DE (1) DE19917062C2 (fr)
WO (1) WO2000064135A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1326476A1 (fr) * 2002-01-08 2003-07-09 Alcatel Réseau, unité d'un réseau, procédé et produit programm d'ordinateur pour échanger des signaux de paquets via une connexion groupée

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10244980A1 (de) * 2002-09-26 2004-04-15 Siemens Ag Verfahren und Kommunikationsanordnung zur Übermittlung von zeitschlitzorientierten Informationen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4390982A (en) * 1981-01-14 1983-06-28 International Telephone And Telegraph Corporation Digital PBX system
US4740955A (en) * 1986-10-29 1988-04-26 Tie/Communications, Inc. Communications system having voice and digital data capability and employing a plurality of voice and data buses in main service unit and serial packetized transmission to and from telephones
EP0448197A2 (fr) * 1990-02-17 1991-09-25 Gec Plessey Telecommunications Limited Appareil de télécommunications sans fil
EP0475135A1 (fr) * 1990-08-29 1992-03-18 Siemens Aktiengesellschaft Système de transmission pour réseau de connection dans des reseaux de communication

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4423792A1 (de) * 1994-07-01 1996-01-04 Deutsche Bundespost Telekom Verfahren und Schaltungsanordnung zur Mehrfachausnutzung von Basiskanälen im ISDN
DE19509965A1 (de) * 1995-03-18 1996-09-19 Sel Alcatel Ag Verfahren zum Steuern eines Zugangsnetzes oder eines physikalischen Zugangsnetzes sowie Zugangsnetze und Vermittlungsstelle dafür
DE19512189A1 (de) * 1995-03-31 1996-10-02 Siemens Ag Verfahren zur Übertragung von Funksignalen zwischen ortsfesten Funk-Teilnehmerstationen und ortsfesten Basisstationen
DE19711321C1 (de) * 1997-03-18 1998-09-10 Siemens Ag Teilnehmeranschlußkonzentrator
FI974469A (fi) * 1997-12-09 1999-06-10 Nokia Telecommunications Oy Menetelmä tilaajien keskittämiseksi puhelinverkossa

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4390982A (en) * 1981-01-14 1983-06-28 International Telephone And Telegraph Corporation Digital PBX system
US4740955A (en) * 1986-10-29 1988-04-26 Tie/Communications, Inc. Communications system having voice and digital data capability and employing a plurality of voice and data buses in main service unit and serial packetized transmission to and from telephones
EP0448197A2 (fr) * 1990-02-17 1991-09-25 Gec Plessey Telecommunications Limited Appareil de télécommunications sans fil
EP0475135A1 (fr) * 1990-08-29 1992-03-18 Siemens Aktiengesellschaft Système de transmission pour réseau de connection dans des reseaux de communication

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1326476A1 (fr) * 2002-01-08 2003-07-09 Alcatel Réseau, unité d'un réseau, procédé et produit programm d'ordinateur pour échanger des signaux de paquets via une connexion groupée
US8149845B2 (en) 2002-01-08 2012-04-03 Alcatel Lucent Network for exchanging packet signals via a pooled connection

Also Published As

Publication number Publication date
DE19917062A1 (de) 2000-10-26
DE19917062C2 (de) 2002-04-25

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