WO2001024544A1 - Procede et dispositif de commutation d'une liaison dans un reseau de communication - Google Patents

Procede et dispositif de commutation d'une liaison dans un reseau de communication Download PDF

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Publication number
WO2001024544A1
WO2001024544A1 PCT/DE2000/003328 DE0003328W WO0124544A1 WO 2001024544 A1 WO2001024544 A1 WO 2001024544A1 DE 0003328 W DE0003328 W DE 0003328W WO 0124544 A1 WO0124544 A1 WO 0124544A1
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WO
WIPO (PCT)
Prior art keywords
connection
communication network
channel
user
switching
Prior art date
Application number
PCT/DE2000/003328
Other languages
German (de)
English (en)
Inventor
Franz Egger
Norbert Huffschmid
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
Priority to EP00979382A priority Critical patent/EP1216583A1/fr
Publication of WO2001024544A1 publication Critical patent/WO2001024544A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/64—Distributing or queueing
    • H04Q3/66—Traffic distributors
    • H04Q3/665—Circuit arrangements therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges
    • H04Q3/0025—Provisions for signalling

Definitions

  • the present invention relates to a method and a device for switching a connection between two participants in a communication network, for. B. a telephone network, from a switching center of the communication network, according to a request originating from a point outside of this communication network, for example from the Internet, the existing switching functions and signal transmission functions of the communication network being used.
  • the controller Since there are two connections from the point of view of the communication network, in order to guarantee this feature, the controller must give the second call the identifier of the telephone number of the first call instead of the controller's own.
  • the invention is therefore based on the object to provide a method and a device with which it is possible without complex adjustments to the transit exchanges and the modules and devices used in them, from one point in the network, a connection between two participants in the Establish network upon request from a third party.
  • a central drawing channel common channel signaling
  • two inputs for transmission links are connected to a transit exchange through a data line. This can already be achieved with a simple data line. This also results in a fixed, paired assignment of the user data channels, for example the voice channels in a telephone network.
  • at least one user channel of one input is assigned to one user channel of the other input of the transmission via the corresponding time slot. assigned permanently.
  • a control signal is transmitted to the central character channel with the content that a connection is present on the one user channel, the user channels permanently assigned to each other, which is to be conveyed to the first subscriber and at the same time that on the second user channel there is a connection to be forwarded to the second subscriber. This is done from
  • Terminal signaling of the connection to the first subscriber passed on to the connection to the second subscriber via the central character channel and vice versa.
  • the ITU-T signaling system No. 7 is advantageously used for signaling on the central drawing channel.
  • the signaling messages of the ISDN User Part are advantageously transmitted from the first to the second connection and vice versa via the ITU-T signaling system No. 7.
  • control signals are advantageously generated by an existing controller of the transit exchange and passed on to the central drawing channel.
  • a connection can be initiated by a request from another communication network.
  • a program that is installed on a computer that is connected to this other communication network issues the order to establish the connection.
  • the other communication network is the Internet, the service offering "Click to Dial" can be realized.
  • a device is further provided in a transit switching center for switching a connection between two participants in a communication network.
  • the communication network has a central drawing channel (common channel signaling) that is independent of the user channels. It is also a communication network with transit exchanges, each consisting of at least one switching network and associated line trunk groups.
  • At least one pair of user channels for user data is permanently assigned by means of at least one connection of two inputs for transmission links at the transit exchange through a data line.
  • the device consists of a control device (CTD controller) which is connected to the central drawing channel and which directs a control signal to the central drawing channel with the content on which a user channel, the user channels permanently assigned to each other, is located a connection that is to be conveyed to the one subscriber and on the second user channel, the user channels permanently assigned to each other, there is a connection to the to be conveyed to the second participant.
  • the control device forwards the terminal signaling of the connection to the first subscriber to the connection to the second subscriber and vice versa.
  • a connection between two participants in the communication network can advantageously be set up with little effort, since only the computing effort for generating the signals of the central character channel and also for transmitting the terminal signaling from the control device must be performed.
  • the transit switching center in the device according to the invention experiences itself as an apparently neighboring transit switching center and the synchronization of the user data and the fixed assignment of the user channels thus takes place with the existing means of the transit switching center.
  • the device can further advantageously be installed at already existing transit exchanges.
  • the control device advantageously uses the signaling protocol according to ITU-T signaling system No. 7.
  • control device advantageously transmits the end-to-end signaling messages of the ISDN User Part (ISUP) from one connection to the other and vice versa.
  • ISUP ISDN User Part
  • control device is an existing controller of the transit exchange.
  • control device CTD controller
  • the group processor of the connection part of the transit exchange according to the EWSD system.
  • An external additional controller is then advantageously not required, since the connection group has sufficient performance to also serve as a control device for the device proposed here.
  • the control device can be connected to a computer, which in turn is connected to another communication network, in order to initiate the connection by a program on this computer as requested from the other communication network.
  • the other communication network is advantageous and the "Click to Dial" feature is realized as a result.
  • Fig. 1 shows a schematic of the connection of two participants by a third party according to the prior art by a computer as a terminal of the network.
  • 2 shows as a diagram the connection of two subscribers by a third party using the device according to the invention.
  • FIG 3 shows, in a highly simplified manner, an embodiment of the device according to the invention at a transit exchange EWSD.
  • FIG. 1 schematically shows, according to the prior art, the switching of a connection in a communication network by means of a computer connected to the communication network as a terminal, which serves as an automatic operator 9.
  • the communication network consists of transit exchanges 3 and subscriber exchanges 4.
  • an exchange can have both functions and can be both transit exchange 3 and subscriber exchange 4.
  • the transit exchanges are connected to one another with transmission links which have at least one user channel 5 and at least one signal channel 6 separate therefrom.
  • the connection between a first subscriber 7 and a second subscriber 8 is shown in FIG. 1 by the automatic operator 9.
  • the automatic operator 9 first dials both subscribers 7, 8 in two separate connections via two terminal connections 14. In the example shown, both connections initially take the same route.
  • the connections can also take separate routes through the communication network after the subscriber exchange 4 to which the automatic operator 9 is connected.
  • the two connections are forwarded completely independently as two different ones. This is done by routing the user channels 5 and character channels 6 via connection groups 2 into the transit exchange 3 and in one Switching network 1 are passed on according to the control signals on the drawing channels 6.
  • the automatic operator 9 connects the two connections.
  • FIG. 2 shows, by way of example, the diagram of a device according to the invention for switching a first subscriber 7 and a second subscriber 8 in an embodiment with a request for a connection by a network server 13, for example the Internet.
  • the drawing also shows an embodiment in which the device according to the invention is integrated in a transit exchange 3.
  • a transit exchange 3 consisting of the main modules coupling network 1 and line groups 2, two transmission links are connected by a data line 12 and thus at least two user channels 5 are permanently assigned to one another via the data line 12.
  • the associated drawing channels 6 are equipped with a control device (CtD controller, Click to Dial
  • this control device is one of the controllers already present in the transit switching center 3 for controlling the transit switching center 3 itself.
  • the control device 10 is connected to a via a connecting line 11
  • Network server 13 connected.
  • the network server 13 can now be connected to a further communication network, for example the Internet. If the network server 13 now receives a request to set up a connection between the first subscriber 7 and the second subscriber 8, then it issues the command for this via the connecting line 11 to the control device 10.
  • the control device 10 now routes a control signal to the drawing channel 6 that on the a user channel 5 connected to the data line 12 is present which is to be forwarded to the first subscriber 7 and which is via the switching network 1 is ultimately connected to the first subscriber.
  • a connection from the data line 12 to the second subscriber 8 is switched via the switching network 1 with a corresponding control signal on the drawing channel 6.
  • the control device 10 further transmits terminal signaling messages coming from the connection to the first subscriber 7 on the drawing channel 6 to the connection to the second subscriber 8 and vice versa.
  • the described design of the device according to the invention has the advantage that it can be set up at an existing transit exchange 3 with little effort and also retrospectively. It is only necessary to attach the data line 12, to add an existing controller by software adaptation to the control device 10 and to set up an interface as a connection line 11 to a network server 13. This can also be done using existing system interfaces to the outside.
  • FIG 3 shows in simplified form a further embodiment of the device according to the invention at a transit exchange of the type EWSD.
  • a transit exchange of the type EWSD consists of a switching network 1 (SN, Switch Net) and at least one line group 2 (LTG, Line Trunk Group). Four are shown here, one enlarged and drawn with their assemblies.
  • the coupling network 1 has its own control Controller, the Switch Group Control 15 (SGC).
  • a line group 2 is constructed from line units 17 (DIU, LTU), a group coupler 19 and a line interface unit 20. If connection group 2 is designed for PCM 30 transmission links, as in the embodiment shown, connection group 2 has four connection units 17. Each connection unit 17 provides a PCM 30 connection 22 for a transmission link. Two of the PCM 30 connections 22 are connected to one another by data lines 12.
  • the group processor 21 is at the same time the signal processor 10.
  • the user channels are combined from the connection units 17 in a group coupler 19 (G ⁇ ).
  • G ⁇ group coupler 19
  • 4 2 MBit PCM lines with 32 user channels are combined in the group coupler 19 to form an 8 MBit line with 128 channels, which are passed on to the switching network 1 via the interface of the Line Interface Unit 20.
  • the connection is established as already described above. Since the group processor 21 is connected to the processor of the switching network 1, the switch group control 15 and the central processor 16 via internal interfaces, it can serve as a control device 10. The software must be adapted accordingly. The command to set up a connection can also be transmitted to the control device 10 via these interfaces. It is therefore possible with the described embodiment to produce the device according to the invention with two data lines 12 and a software supplement. In particular, a subsequent installation at existing transit exchanges EWSD is also conceivable, which are used in large numbers.

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

Abstract

Dans un réseau de communication doté d'un canal de signalisation central indépendant des canaux utiles (5a, 5b, 5), deux entrées pour des trajets de transmission d'un central de transit (3) sont reliées par une ligne de données (12). Grâce à un signal de commande sur le canal de signalisation central (6), un dispositif de commande (10) garantit la retransmission d'une liaison de la première entrée au premier abonné (7) et de la deuxième entrée au deuxième abonné (8). Les signalisations de terminal des liaisons vers les abonnés (7, 8) sont transmises en alternance.
PCT/DE2000/003328 1999-09-29 2000-09-25 Procede et dispositif de commutation d'une liaison dans un reseau de communication WO2001024544A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP00979382A EP1216583A1 (fr) 1999-09-29 2000-09-25 Procede et dispositif de commutation d'une liaison dans un reseau de communication

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19946658.0 1999-09-29
DE1999146658 DE19946658A1 (de) 1999-09-29 1999-09-29 Verfahren und Vorrichtung zur Vermittlung einer Verbindung in einem Kommunikationsnetz

Publications (1)

Publication Number Publication Date
WO2001024544A1 true WO2001024544A1 (fr) 2001-04-05

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Application Number Title Priority Date Filing Date
PCT/DE2000/003328 WO2001024544A1 (fr) 1999-09-29 2000-09-25 Procede et dispositif de commutation d'une liaison dans un reseau de communication

Country Status (3)

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EP (1) EP1216583A1 (fr)
DE (1) DE19946658A1 (fr)
WO (1) WO2001024544A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10145758A1 (de) * 2001-09-17 2003-04-10 Siemens Ag Verfahren und Anordnung zur Vermittlung einer Verbindung
DE10322706A1 (de) * 2003-05-20 2004-12-16 Web.De Ag Verfahren und Kommunikationsumgebung zum Aufbau einer Telefonverbindung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998001978A1 (fr) * 1996-07-08 1998-01-15 At & T Corp. Procede de reacheminement du trafic dans un reseau de telecommunications pour preserver des ressources reseau
US5898839A (en) * 1997-03-17 1999-04-27 Geonet Limited, L.P. System using signaling channel to transmit internet connection request to internet service provider server for initiating and internet session

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998001978A1 (fr) * 1996-07-08 1998-01-15 At & T Corp. Procede de reacheminement du trafic dans un reseau de telecommunications pour preserver des ressources reseau
US5898839A (en) * 1997-03-17 1999-04-27 Geonet Limited, L.P. System using signaling channel to transmit internet connection request to internet service provider server for initiating and internet session

Also Published As

Publication number Publication date
DE19946658A1 (de) 2001-04-12
EP1216583A1 (fr) 2002-06-26

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