WO1998056189A2 - Procede et installation de traitement de donnees pour commutation dans un systeme de telecommunication - Google Patents

Procede et installation de traitement de donnees pour commutation dans un systeme de telecommunication Download PDF

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Publication number
WO1998056189A2
WO1998056189A2 PCT/DE1998/001493 DE9801493W WO9856189A2 WO 1998056189 A2 WO1998056189 A2 WO 1998056189A2 DE 9801493 W DE9801493 W DE 9801493W WO 9856189 A2 WO9856189 A2 WO 9856189A2
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WO
WIPO (PCT)
Prior art keywords
switching
transmission
channel
unit
network
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/DE1998/001493
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German (de)
English (en)
Other versions
WO1998056189A3 (fr
Inventor
Norbert LÖBIG
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to EP98934843A priority Critical patent/EP0986918A2/fr
Publication of WO1998056189A2 publication Critical patent/WO1998056189A2/fr
Publication of WO1998056189A3 publication Critical patent/WO1998056189A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13031—Pulse code modulation, PCM
    • 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
    • H04Q2213/1307—Call setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13097—Numbering, addressing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13102—Common translator
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13106—Microprocessor, CPU
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/1313—Metering, billing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13138—Least cost routing, LCR
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13141—Hunting for free outlet, circuit or channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13176—Common channel signaling, CCS7
    • 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
    • H04Q2213/13217—Cranckback in routing, trombone connection, loopback circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/1322—PBX
    • 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
    • H04Q2213/13345—Intelligent networks, SCP
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/1338—Inter-exchange connection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13383—Hierarchy of switches, main and subexchange, e.g. satellite exchange
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13384—Inter-PBX traffic, PBX networks, e.g. corporate networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13395—Permanent channel, leased line
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13405—Dual frequency signaling, DTMF

Definitions

  • the invention relates to a method for switching between subscribers of a telecommunications system, in which at least two switching units are used, each of which, depending on the connection, connects a subscriber-side transmission channel to a selected transmission channel of a plurality of selectable transmission channels. At least some of the selectable transmission channels connect the switching units to one another via transmission links.
  • the switching takes place in sections by the switching units located at the ends of the sections selecting a channel to be used for the connection by signaling.
  • the switching units themselves are usually between two switching units.
  • a switching unit located between two switching units is to be referred to as a third switching unit.
  • the third switching unit has e.g. the task of performing a protocol adaptation or selecting from at least two alternative switching units for the connection a preferred switching unit which is then used for the connection setup. Another requirement for the third switching unit is to select certain transmission routes, e.g. for compressible voice data.
  • the third switching unit is a so-called access unit with which a network operator enables subscribers to access his or her telecommunications network, or network for short.
  • the network operator only offers a connection option between two locations, for example between the capitals of two countries. Due to this specialization, the network operator can offer the connection option at favorable conditions.
  • the subscribers are usually away from the capital of the country concerned, so that the network operator rents transmission capacities from another network operator within the country and integrates them into its network for connecting subscribers.
  • the access unit is also used for connections in which participants can be reached outside the network operator's network.
  • the access unit is thus an interface between the networks of different network operators or between the network of the network operator and a switching unit to which subscribers are directly connected, as is the case with private branch exchanges or telecommunications systems.
  • a telecommunication system or a local exchange is used as the third switching unit.
  • the telecommunications system has been developed for the toll-free switching of connections within the private property of its operator. This means that many functions are not used when the telecommunications system is used as an access unit.
  • the telecommunications system does not have the maintenance and operating properties that are placed on an access unit. For example, As a rule, the telecommunications system is not adequately protected against failures of modules and sub-units.
  • a local exchange is adequately protected against failures of modules and subunits, but it is much larger and more powerful than a telecommunications system, so that it is oversized as an access unit.
  • a local exchange is thus only used as an access unit if it belongs to the network operator who offers access to his network, and if, in addition, it is not too far from a customer's switching unit or from the switching unit used by its customers in another network.
  • the invention is based on the consideration that a third switching unit which is or ought to be located between other neighboring switching units can be dispensed with if the transmission links which can be selected by the third switching unit are now predetermined, a control unit selects the transmission link and then the switching power of the neighboring switching units is used. It is therefore a prerequisite that the control functions which were or should be carried out by the third switching unit are taken over by the control unit, since these control functions cannot readily be taken over by the neighboring switching units.
  • a connection request for establishing a connection between the participants is transmitted from the switching unit to the control unit.
  • the control unit selects one of the transmission channels depending on the connection request and signals the selected transmission channel by signaling to the switching units connected by the selected transmission channel.
  • the selected transmission channel is then used to transmit the user data between the participants.
  • control unit Ver. Exchange binding requests and signaling characters, even though the control unit itself no longer controls a switching unit itself. This means that the remaining switching units do not have to be changed.
  • the control unit can perform its previous switching function because, depending on the connection request, it selects a transmission channel and thus specifies the switching units involved in the respective connection and / or selects a transmission channel with a specific transmission behavior in the case of fixed switching units. After this indirect switching, the control unit signals the switching units connected by the selected transmission channel by signaling the selected transmission channel. The actual switching of the connection is then carried out in the fixed switching units in such a way that the selected transmission channel is used to transmit the user data between two or more users.
  • At least one switching unit belongs to the telecommunications network of a first network operator and another switching unit and / or at least one of the transmission links belongs to the telecommunications network of a second network operator.
  • the method according to the invention enables a simple connection of the networks of different network operators to a telecommunication system. If, for example, the first network operator operates a network that represents an alternative to the traditional telecommunications network and if he does not yet have any transmission links for certain sections of a connection, he can rent it from the operator of the traditional network. Either a customer's telecommunications system is used to access the network of the alternative network operator, or access is via the network of the traditional network operator.
  • the control unit now only has the functions that are required to adapt the two telecommunication networks to one another or that directly related to access to the network of the alternative network operator.
  • At least some of the transmission channels are specified in a configuration phase without changes in circuitry in the switching units by connecting transmission channels on transmission link sections. This allows an adaptation to a changed traffic load.
  • the transmission link sections preferably converge in a switching device where a switching unit would have to be set up as an access unit.
  • the invention also relates to a data processing system for switching in a telecommunications network and in particular for carrying out the method according to the invention or a further development thereof.
  • the technical effects mentioned above also apply to the data processing system.
  • control unit used in the method according to the invention or the data processing system according to the invention can establish further developments in connection with a large number of switching units.
  • the central control unit replaces a large number of switching units.
  • FIG. 1 shows the access from the telecommunications network of a traditional network operator to the telecommunications network of an alternative network operator with or without data compression
  • FIG. 2 shows access to the telecommunications network of the alternative network operator via a telecommunications system
  • Figure 3 functional units of a telecommunications system that contains the network of the traditional network operator and the network of the alternative network operator.
  • FIG. 1 shows the access from a telecommunications network 10 of a first network operator to a telecommunications network 12 of a second network operator.
  • the network 10 belongs e.g. the traditional network operator TELEKOM AG.
  • a large number of subscribers are each connected to the network 10 at local exchanges, one of which is shown in FIG. 1.
  • the local exchanges are in turn connected to one another so that each subscriber can reach any other subscriber in order to transmit voice data, fax data, data from a data processing system or other data during a connection.
  • the network 12, belongs to an alternative network operator, who is currently building up his network 12, or is only interested in the switching of certain connections, e.g. specialized between two or three locations.
  • FIG. 1 two distribution units 14 and 16, a switching computer 18 and a switching center 20 are shown in the network 12. Between the distribution units 14 and 16 there is a transport route 22 which the network operator of the network 12 has rented from the network operator of the first network 10 and which therefore also belong to the network 10.
  • the distribution unit 14 in the network 12 and the switching center 11 in the network 10 are connected by a line 24 on which thirty PCM transmission channels (pulse code modulation) and a signaling channel D3 are available.
  • the distribution unit 14 contains a time-division multiplex unit 26a, which is connected on the one hand to the line 24 and, on the other hand, either indirectly or directly, with the interposition of a compression unit 28a, to transmission channels of the transport route 22.
  • the multiplex unit 26a assigns each of them thirty transmission channels on the side of the network 10 each one of thirty transmission channels on the side of the transport route 22.
  • the multiplex unit 26a connects a signaling channel D3 on the line 24 to a signaling channel D3 of the same name on the transport route 22. The assignment is fixed to the multiplex unit 26a in a configuration phase and is then retained via a large number of telecommunications connections.
  • the user data transmitted on the twenty transmission channels of a channel bundle 30 are processed in the compression unit 28a.
  • the compression unit 28a carries out data compression for the useful data which are transmitted in the channel bundle 30 in the direction of the transport route 22.
  • the compression ratio is 4: 1, so that the compression unit 28a on the side of the transport path 22 is only connected to five transmission channels. If, on the other hand, user data are transmitted from the transport route 22 to the network 10 on these five transmission channels, the compression unit 28a decompresses the user data in a ratio of 1: 4. Twenty decompressed transmission channels, which are connected to the time multiplex unit 26a, are required for the useful data transmitted on the five compressed transmission channels.
  • the user data in ten transmission channels of a channel bundle 34 are transmitted uncompressed on the transport route 22 from the distribution unit 14 to the distribution unit 16 and in the opposite direction.
  • the signaling data transmitted on the signaling channel D3 of the transport route 22 are likewise transmitted uncompressed between the distribution units 14 and 16.
  • distribution unit 14 In addition to distributing the transmission channels on line 24 to transmission channels on line 22, distribution unit 14 thus also has the function of performing compression or decompression for specific transmission channels. In addition, by the distribution unit 14 Signaling channel D3 selected from the channel bundle transmitted on line 24 or integrated into this channel bundle.
  • the transport route 22 has a length of 10 km, for example, and possibly contains several sections in the network 10. Because of the compression, only transmission capacities for the transmission of fifteen transmission channels in the network 10 have to be made available for the transmission of thirty transmission channels for user data. Thus, the network 10 is only half as burdened by the rented transport route 22 as would be the case if thirty transmission channels for useful data had to be transmitted on the line 22. This results in cost savings for the operator of the network 12.
  • the distribution unit 16 is constructed similarly to the distribution unit 14 and contains a compression unit 28b and a time multiplex unit 26b.
  • the compression unit 28b is connected to the five transmission channels of the channel bundle 32 on the side of the transport route 22.
  • the compression unit 28b is connected to the time division multiplex unit 26b via a channel bundle 36 of twenty transmission channels.
  • the compression unit 28b works essentially like the compression unit 28a. This means that compressed data in the compression unit 28a is decompressed in the compression unit 28b and compressed data in the compression unit 28b is decompressed in the compression unit 28a.
  • the ten transmission channels of the channel bundle 34 and the signaling channel D3 are also brought to the time multiplex unit 26b.
  • Channels of a line 38 which connect the switching center 20 and the distribution unit 16 are also brought to the time multiplex unit 26b.
  • User data are transmitted on line 38 in thirty PCM transmission channels and signaling data in a signaling channel D2.
  • the time division multiplex unit 26b assigns one to each transmission channel on the line 38 respective transmission channel of channel bundle 36 or channel bundle 34.
  • the assignment of the transmission channels in the multiplex unit 26b is predefined in the configuration phase.
  • the time division multiplex unit 26b selects the signaling channels D2 and D3.
  • the selected signaling channels D2 and D3 are brought to a switching computer 18.
  • the switching computer 18 carries out the switching steps explained below by processing the connection requests arriving on the signaling channel D2 or D3 and signaling the selected transmission path to the switching center 11 in the network 10 on the signaling channel D3.
  • the switching computer 18 signals the selected transmission path to the switching center 20 of the network 12 simultaneously or somewhat later on the signaling channel D2.
  • the switching computer 18 meets the requirements for a device in a public network and executes software functions of one or more access units to the network 12 of the alternative network operator. While the time multiplex units 26a and 26b switch fixed transmission bandwidths on the channel bundle 32 and on the channel bundle 34 in each transmission direction, the switching computer 18 forces the selection of a transmission path by a channel negotiation with the switching center 11 or with the switching center 20, which already has the correct destination and the required functionality from the start due to the settings of the time multiplex unit 26a and 26b, for example Data compression.
  • the switching computer 18 takes over the tasks of an access unit in the network 12 of the alternative network operator. If a customer of the alternative network operator wants to use services and the network 12 of the alternative network operator for a connection, then he sets up a first connection which, for example, a local is talk, unit via the switch 11 to the distribution ⁇ 14 and thus also to the switching computer 18.
  • the switching computer 18 checks the authorization of the customer, for example by checking his phone number. Further checks, such as checking a so-called PIN (personal identity number), are possible with the involvement of the exchange 20.
  • PIN personal identity number
  • the switching computer 18 also uses the data contained in the connection request to check whether the user data to be transmitted can be compressed using the connection to be set up. If this is the case, he selects a transmission channel of the channel bundle 30 and thus also of the channel bundle 36.
  • Compressible user data are e.g. Voice data.
  • non-compressible user data e.g. Fax data or data of a data processing system
  • a transmission channel of the channel bundle 34 is selected by the switching computer 18.
  • the switching computer 18 determines, when selecting transmission channels for compressible user data, that all transmission channels of the channel bundle 30 or the channel bundle 36 and thus also the channel bundle 32 are already occupied, it checks whether there are currently unused transmission channels in the channel bundle 34. If this is the case, a transmission channel in the channel bundle 34 that has not yet been used is used for the transmission of the compressible user data, which are now transmitted uncompressed.
  • the signaling between the switching centers 11 and 20 takes place only indirectly via the switching computer 18. If different signaling protocols are used in the telecommunications networks 10 and 12, the switching computer 18 carries out a protocol adaptation, for example between the protocols DSS1, DASS2, 1TR6 or VN3 / VN4. The switching computer 18 works so that it is the switching centers 11 and 20 as a telecommunications system (PBX - Private Exchange), cf. Arrows 40 and 42. On the other hand, the switching computer 18 signals the switching units 11 and 20 characters according to a protocol for local exchanges (Local Exchange), as shown by arrows 44 and 46.
  • PBX - Private Exchange a protocol for local exchanges
  • the signaling of the actual switching destination can e.g. via the multi-frequency dialing method or, alternatively, in the case of an ISDN network via the so-called subaddress information.
  • the network operator of the network 12 then switches a connection between the specified second subscriber and the first subscriber using his own network 12 and the associated switching devices.
  • the switching computer 18 After the termination of a connection, in the establishment of which the switching computer 18 was involved, the switching computer 18 takes the necessary steps to restore the original state. This means, for example, that the transmission channel which has been released again is noted in the switching computer 18.
  • the switching computer 18 is both an access unit for a subscriber from the network 10 into the network 12 and an output unit for a subscriber in the network 12 using the switching center 20 into the network 10.
  • the access unit is called "point of presence" or "remote point" in English of presence ".
  • FIG. 2 shows access to the network 12 with a telecommunication system 50 that belongs to a customer.
  • the telecommunications system 50 generally provides connections free of charge within the customer's private premises.
  • FIG. 2 shows only one subscriber Tlnl of the subscribers connected to the telecommunications system 50.
  • the telecommunications system 50 is connected via a line 52 to a distribution unit 14 ′, which is constructed essentially like the distribution unit 14.
  • Function elements shown in FIG. 2, which are constructed essentially as functional elements already explained in FIG. 1, have in FIG. 2 d ashne reference numerals but with a prime symbol. Only the differences are explained below.
  • the time multiplex unit 26a 'thus operates essentially like the time multiplex unit 26a, but instead of the line 24 (cf. FIG. 1), the line 52 coming from the telecommunications system 50 is connected to the time multiplex unit 26a.
  • the subscriber Tlnl has a so-called direct access to the network 12 of the alternative network operator since he does not need the network 10 of the traditional network operator in order to use the services in the network 12.
  • the network 10 of the traditional network operator may only be used to the extent that the transport route 22 'was rented by the traditional network operator. Since the customer's telecommunications system 50 is connected directly to the telecommunications network 12, there is no need to dial into the network 12 and thus also the access authorization check carried out in the switching computer 18 'for this subscriber.
  • the switching computer 18 signals the telecommunications system 50 in a signaling channel D1 characters according to a protocol between telecommunications systems and local exchanges, cf. Arrow 54.
  • the telecommunications system 50 regards the switching computer 18 'as a local exchange and signals in the signaling channel D1 using the same protocol, cf. Arrow 56.
  • the exchange computer 18' uses a signaling protocol on the signaling channel D2 'for the interface between the telecommunications system and the local exchange, cf. Arrow 46 '.
  • the exchange 20 ' uses the associated signaling protocol for the interface between the local exchange and the telecommunications system on the signaling channel D2' in the direction of the exchange computer 18 ', cf. Arrow 42 '.
  • the transport route 22 ′ is carried out by the traditional network operator of the network 10 leased, useful data is compressed or decompressed with compression units 28a 'and 28b'.
  • This measure means that fewer transmission channels have to be rented by the traditional network operator.
  • the switching computer 18 'selects one of the twenty transmission channels of the channel bundle 30' or 36 'for compressible voice data. If the bandwidth of twenty transmission channels present in this channel bundle 30 'or 36' is utilized, further compressible user data are transmitted uncompressed via the transmission channels of the channel bundle 34 'if one of these transmission channels is still free.
  • non-compressible user data are transmitted exclusively on the ten transmission channels of the channel bundle 34' for uncompressed data transmission.
  • no more than ten connections can be switched via which uncompressed user data are transmitted. If supported by the signaling protocol, a change between data transmission and voice transmission or between voice transmission and data transmission during a connection is only possible for data connections and voice connections in which the user data are not transmitted in compressed form.
  • the distribution unit 1 ' is expediently close to the customer's telecommunications system 50.
  • the switching computer 18 'can also be close to the telecommunication system 50, but it is expedient to set it up centrally near the switching center 20'.
  • the switching computer 18 'can thus also be used as an access unit for other telecommunications systems by other customers or additionally as an access unit as shown in FIG. 1.
  • a central switching computer 18 or 18 ' is the access unit for a large number of accesses to the network 12 of the alternative network operator.
  • the access to or the exit from the network 12 is repeated by such used switching computer 18 'implemented circuitry and software technology in a simple manner.
  • FIG. 3 shows functional units of a telecommunications system that contains the network 10 and the network 12. Functional units with the same function that have already been explained with reference to FIGS. 1 and 2 are not explained again in FIG. 3, but are given two superscript lines to distinguish them.
  • the telecommunications system 50 ′′ and the switching center 11 ′′ are connected to a distribution unit 100 which contains a time multiplex unit 102.
  • the time multiplexing unit 102 has thirty transmission channels on the side of the telecommunications system 50 ′′, thirty transmission channels on the side of the switching center 11 ′′ and forty transmission channels on the side of a transport route 104.
  • the network operator of the network 12 has rented the transport route 104, for example from the network operator of the network 10.
  • User data is transmitted on the transport route 104 in up to thirty transmission channels.
  • ten transmission channels on the time multiplex unit 102 on the side of the transport route 104 are unused, as illustrated by a channel bundle 106.
  • the time multiplex unit 102 connects the signaling channel Dl '' from and to the telecommunication system 50 '' with a signaling channel of the same name on the transport route 104.
  • Twenty transmission channels on the side of the telecommunication system 50 '' are one with the time multiplex unit 102 with twenty transmission channels Channel bundle 108 connected in pairs on the side of the transport route 104.
  • the remaining ten transmission channels on the side of the telecommunications system 50 ′′ are each connected to one of ten transmission channels on the side of the switching center 11 ′′ by the time multiplex unit 102, cf. Channel bundle 110.
  • Ten further transmission channels on the side of the switching center 11 ′′ are each provided by the time multiplex unit 102 of ten transmission channels of a bundle 112 connected on the transmission link 104 side.
  • the signaling channel D3 ′′ from and to the switching center 11 ′′ is connected to a signaling channel D3 ′′ of the same name on the side of the transport route 104.
  • the transport route 104 is the carrier for the transmission channels of the channel bundles 108 and 112 as well as the signaling channels D1 ′′ and D3 ′′ to a further time multiplex unit 114, which is, for example, 10 km away from the distribution unit 100.
  • the time-multiplexing unit 114 thus has thirty transmission channels and two signaling channels Dl 1 'and D3''on the side of the transport path 104th
  • the time multiplex unit 114 has thirty transmission channels and one signaling channel D2 ′′.
  • the twenty transmission channels of the channel bundle 108 are each connected to one transmission channel on the line 38 ′′.
  • the ten transmission channels of channel bundle 112 are each connected to a further transmission channel on line 38 ′′.
  • the time multiplex unit 114 has three signaling channels D1 ′′, D2 ′′ and D3 ′′.
  • the time multiplex unit 114 connects signaling channels D1 ′′, D3 ′′ on the side of the transport route 104 and the signaling channel D2 ′′ on the side of the switching center 20 ′′ to the signaling channels of the same name on the side of the switching computer 18 ′′.
  • the switching computer 18 ′′ thus has access to the signaling channels D1 ′′, D2 ′′ and D3 ′′.
  • the switching computer 18 ′′ assigns one of the ten transmission channels of the channel bundle 110 for connections of a subscriber Tlnl ′′ on the telecommunications system 50 ′′ to the traditional network 10. In this case, the switching power and the transmission power of the network 12 are only used slightly.
  • the transmission channels of channel bundle 110 are thus used for connections by the Switching center 11 '' to the telecommunications system 50 '' and from the telecommunications system 50 '' to the switching center 11 ''.
  • the network computer 18 '' of the new connection by channel negotiation with the telecommunication system 50 '' on the signaling channel Dl 1 'and to the switch 20''via the signaling channel D2 '' to a transmission channel of channel bundle 108.
  • the connection to the traditional network 10 is then switched via the switching center 20 ′′ of the alternative network 12.
  • a channel of the channel bundle 112 can be selected by channel negotiation of the switching center 20 ′′ and the switching center 11 ′′ with the intermediary of the switching computer 18 ′′.
  • the connection can also be switched to the traditional network at a different location than that shown in FIG.
  • connections from the switching center 11 "'to the telecommunications system 50"' are switched via the switching center 20 "when the transmission channels of the channel bundle 110 are occupied.
  • the switching computer 18 ' is selected when the transmission channels are selected.
  • the decision whether a connection request by the subscriber Tlnl '' on the telecommunication system 50 '' is switched directly into the network 10 or only into the network 12 is made in the switching computer 18 ''. whether it is a local call or a long-distance call, the switching of which is carried out by the alternative network operator.
  • compression and decompression of user data has been omitted in the exemplary embodiment in FIG. 3.
  • the compression of the user data can also be carried out in the exemplary embodiment according to FIG. 3.
  • the operator of the traditional network 10 a transmission link 104 with a lower transmission bandwidth can be rented.
  • Time multiplex units which have more than thirty transmission channels for user data on the side of the switching center 11 or 11 ', the telecommunications system 50' 'and / or on the side of the transport route 104 are also used.
  • the links of the transmission channels in the time multiplex units 102 and 114 are specified by a network maintenance center depending on the previous traffic load.
  • the set connections are then communicated to the switching computer 18 ′′ by the network maintenance center.
  • the adaptation to the traffic load is dispensed with. In this case, the time multiplex units 100 and 104 are omitted and the number of transmission channels between the switching centers 11 ′′, 20 ′′ or the telecommunications system 50 ′′ cannot be changed even in the configuration phase.
  • the use of the method according to the invention is not limited to such an application.
  • the method according to the invention is used in particular whenever a protocol adaptation has to be carried out between switching units, as is often the case during the transition between national telecommunications networks.
  • the method according to the invention is used when only the switching computer can process certain connection requests. This is the case, for example, if the switching units are of an older type, but new performance features can be conveyed by the switching computer 18 ′′.
  • the selection of transmission channels of a transmission link is an example called, which transmit the user data compressed or not compressed.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
  • Communication Control (AREA)

Abstract

L'invention concerne un procédé et une installation de traitement de données pour effectuer une commutation entre des abonnés (Tln1'') d'un système de télécommunication (10, 12). Selon ce procédé, une demande d'établissement de communication entre les abonnés (Tln1'') est transmise par une unité de commutation (11'') à une unité de commande (18''). Cette dernière sélectionne une voie de transmission (110, 112) en fonction de la demande d'établissement de communication et signalise, par l'attribution d'un signe, la voie de transmission sélectionnée (110, 112) aux unités de commutation (11'', 20'', 50'') connectées à la voie de transmission sélectionnée (110, 112) qui sert ensuite à la transmission des données utilisateur.
PCT/DE1998/001493 1997-06-02 1998-06-02 Procede et installation de traitement de donnees pour commutation dans un systeme de telecommunication Ceased WO1998056189A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP98934843A EP0986918A2 (fr) 1997-06-02 1998-06-02 Procede et installation de traitement de donnees pour commutation dans un systeme de telecommunication

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1997123091 DE19723091C2 (de) 1997-06-02 1997-06-02 Verfahren und Datenverarbeitungsanlage zum Vermitteln in einem Telekommunikationssystem
DE19723091.1 1997-06-02

Publications (2)

Publication Number Publication Date
WO1998056189A2 true WO1998056189A2 (fr) 1998-12-10
WO1998056189A3 WO1998056189A3 (fr) 1999-04-01

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1998/001493 Ceased WO1998056189A2 (fr) 1997-06-02 1998-06-02 Procede et installation de traitement de donnees pour commutation dans un systeme de telecommunication

Country Status (4)

Country Link
EP (1) EP0986918A2 (fr)
CN (1) CN1259261A (fr)
DE (1) DE19723091C2 (fr)
WO (1) WO1998056189A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19921084A1 (de) * 1999-04-30 2000-11-02 Teles Ag Verfahren und Kommunikationssystem zur Übertragung von Daten eines Teilnehmeranschlusses

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2174270B (en) * 1985-04-27 1988-10-12 Stc Plc Telecommunication system
US4756019A (en) * 1986-08-27 1988-07-05 Edmund Szybicki Traffic routing and automatic network management system for telecommunication networks
DE4441357A1 (de) * 1994-02-15 1995-08-17 Siemens Ag Albis Verfahren zum Übermitteln von Daten zwischen Fernmeldenebenstellenanlagen
US5448633A (en) * 1994-03-30 1995-09-05 Spring Communications Company L.P. Telecommunications system for controlling access to a destination
GB9503939D0 (en) * 1994-09-16 1995-04-19 British Telecomm An intelligent telecommunications network
GB2300089A (en) * 1995-04-21 1996-10-23 Eurotel Telecom Limited Least cost router in a telecommunications system
DE19515856A1 (de) * 1995-04-29 1996-10-31 Sel Alcatel Ag Verbindungsaufbauverfahren sowie Dienstrechner dafür und Kommunikationsnetz damit

Also Published As

Publication number Publication date
DE19723091C2 (de) 2001-08-09
DE19723091A1 (de) 1998-12-03
CN1259261A (zh) 2000-07-05
WO1998056189A3 (fr) 1999-04-01
EP0986918A2 (fr) 2000-03-22

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