CA2297903A1 - Method and adapter device for switching switched connections between time-division-multiplex-oriented components of a communications network via an atm communications network - Google Patents
Method and adapter device for switching switched connections between time-division-multiplex-oriented components of a communications network via an atm communications network Download PDFInfo
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- CA2297903A1 CA2297903A1 CA002297903A CA2297903A CA2297903A1 CA 2297903 A1 CA2297903 A1 CA 2297903A1 CA 002297903 A CA002297903 A CA 002297903A CA 2297903 A CA2297903 A CA 2297903A CA 2297903 A1 CA2297903 A1 CA 2297903A1
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- atm
- communications
- network
- multiplex
- division
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/30—Peripheral units, e.g. input or output ports
- H04L49/3081—ATM peripheral units, e.g. policing, insertion or extraction
- H04L49/309—Header conversion, routing tables or routing tags
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
- H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
- H04Q11/0478—Provisions for broadband connections
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/54—Store-and-forward switching systems
- H04L12/56—Packet switching systems
- H04L12/5601—Transfer mode dependent, e.g. ATM
- H04L2012/5629—Admission control
- H04L2012/563—Signalling, e.g. protocols, reference model
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/54—Store-and-forward switching systems
- H04L12/56—Packet switching systems
- H04L12/5601—Transfer mode dependent, e.g. ATM
- H04L2012/5638—Services, e.g. multimedia, GOS, QOS
- H04L2012/5665—Interaction of ATM with other protocols
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention concerns a method wherein, when setting up a connection (SETUP) launched by a component (KE, KS) with time division multiplexing, an information of specific destination of an ATM communication network (vpi, vci) is derived from a given signalling information (rnr, znr) and an ATM switching connection(SVC) is automatically set up in the ATM communication network (ATMKN). After transparent signalling and useful data (si, ni) transmission by means of the switching (WV) connection set up, said ATM switching connection (SVC) is switched out again. Said method enables a more efficient exploitation of the ATM network (ATM-KN).
Description
Description Method and adapter device for switching switched connections between time-division-multiplex-oriented components of a communications network via an ATM communications network In existing and future time-division-multiplex-oriented communications networks, in particular in ISDN-oriented communications networks, not only are switched connections switched between time-division-multiplex-oriented communications systems via ATM communications networks, but switched connections are also switched in the subscriber's loop of the communications terminals of communications systems via ATM communications networks. For this purpose, as is described for example in DE 42 24 388 Cl, permanent virtual connections are established in the ATM communications network.
Furthermore, DE 196 042 44.5 proposes that a permanent virtual connection shall be established for each communications terminal which is to be connected. As a result of permanent virtual connections being established, the requested switching and transmission resources - in the case of ISDN connections these are two 64 kbit/s telecommunications channels and one 16 kbit/s signaling channel - are continuously made available in the ATM communications network. This leads to an inefficient use of resources in the ATM communications network.
The object on which the invention is based consists in using more efficiently the transmission and switching resources of switched connections, routed via ATM communications networks, between time-division-multiplex-oriented components of a communications network, in particular in the subscriber's loop of the communications terminals of communications systems. The object is achieved by means of the features of claim 1.
The essential aspect of the solution according to the invention is the fact that in the case of a connection setup initiated by a time-division-multiplex-oriented component, an ATM-communications-network-specific destination information item - i.e. virtual path and channel - is derived from a specified destination information item - in particular the destination call number - and an ATM switched connection is set up in the ATM communications network on the basis of the derived destination information. Subsequently, as part of the connection setup and release and of an exchange of information between the time-division-multiplex-oriented components, signaling and user information relating to the ATM switched connection which has been set up in the ATM communications network is transferred transparently. In the case of a connection release between the time-division-multiplex-oriented components, the ATM switched connection in question is released again in the ATM communications network.
Considerably more efficient use of the switching and transmission resources is possible as a result of an ATM-communications-network-specific virtual path and channel information item being derived from the communications-network-specific destination call number and from a subsequent automatic connection setup via the ATM communications network with the derived virtual path and channel information.
A further significant advantage of the method according to the invention is the fact that in the case of an overload or in the case of a failure of a transmission link or switching component - for example a switching network in the subscriber's loop of communications systems - it is possible to use an alternative route or a different switching and transmission resource. For this purpose, a plurality of ATM
communications-network-specific destination information items can be assigned to one communications-network-specific destination information item - claim 5. As a result of the additional ATM-communications-network-specific destination information, alternative routes are determined which are used in the event of the failure of the usual route or transmission S link, or, for example, the prioritized route or transmission link. This means that in the event of a fault or overload the switched connections between time-division-multiplex-oriented components are switched via alternative ATM switched connections. The assignment of ATM-communications-network-specific destination information to communications-network-specific destination information is predefined, or can be predefined via appropriate settings - for example program settings.
According to one further refinement of the method according to the invention, in the case of directly successive connection setups between time-division-multiplex-oriented components of the communications network (KN), the ATM switched connection is held - claim 2. This reduction in the signaling traffic can reduce the dynamic loading of the ATM-oriented or time division-multiplex-oriented communications network.
The connection setup and release and the exchange of information are advantageously carried out on the basis of the standardized ISDN protocol - claim 3, the switched connections being advantageously switched between time-division-multiplex-oriented components in the subscriber's loop of the communications terminals of time-division-multiplex-oriented communications systems via ATM switched connections - claim 4.
Owing to the relatively low traffic values per connected communications terminal, the use of the method according to the invention in the subscriber's loop of the communications terminals of communications systems is most effective because the ATM switched connections according to the invention permit switching and transmission resources to be used by a plurality of connected communications terminals, and in addition permit alternative routing of the time-division-multiplex-oriented switched connections in the event of a fault or overload.
Further advantageous refinements of the invention, in particular of an adapter device for implementing the method according to the invention, can be found in the further claims.
The method according to the invention and the adapter device according to the invention will be explained in more detail below with reference to a block circuit diagram.
The block circuit diagram shows time-division-multiplex-oriented communications terminals KE.., which are assigned to a time-division-multiplex-oriented communication system KS -for example to a private communications system - in which, according to the invention, the communications terminals KE..
are each connected to an adapter device ANT - for the sake of further explanation the block circuit diagram illustrates in each case one communications terminal KE and one adapter device ANP. The connection of the communications terminals KE.. can be made, for example, either via an ISDN basic access SO or an ISDN line termination U. Depending on the type of connection, an appropriately implemented line unit AE-ZM is provided in the adapter device ANP. Alternatively, types of connection such as, for example, analog a/b connection or even wireless DECT connection are possible, and in such a case the line unit AE-ZM is to be implemented in accordance with the respective type of connection - in both physical and procedural terms.
Furthermore, DE 196 042 44.5 proposes that a permanent virtual connection shall be established for each communications terminal which is to be connected. As a result of permanent virtual connections being established, the requested switching and transmission resources - in the case of ISDN connections these are two 64 kbit/s telecommunications channels and one 16 kbit/s signaling channel - are continuously made available in the ATM communications network. This leads to an inefficient use of resources in the ATM communications network.
The object on which the invention is based consists in using more efficiently the transmission and switching resources of switched connections, routed via ATM communications networks, between time-division-multiplex-oriented components of a communications network, in particular in the subscriber's loop of the communications terminals of communications systems. The object is achieved by means of the features of claim 1.
The essential aspect of the solution according to the invention is the fact that in the case of a connection setup initiated by a time-division-multiplex-oriented component, an ATM-communications-network-specific destination information item - i.e. virtual path and channel - is derived from a specified destination information item - in particular the destination call number - and an ATM switched connection is set up in the ATM communications network on the basis of the derived destination information. Subsequently, as part of the connection setup and release and of an exchange of information between the time-division-multiplex-oriented components, signaling and user information relating to the ATM switched connection which has been set up in the ATM communications network is transferred transparently. In the case of a connection release between the time-division-multiplex-oriented components, the ATM switched connection in question is released again in the ATM communications network.
Considerably more efficient use of the switching and transmission resources is possible as a result of an ATM-communications-network-specific virtual path and channel information item being derived from the communications-network-specific destination call number and from a subsequent automatic connection setup via the ATM communications network with the derived virtual path and channel information.
A further significant advantage of the method according to the invention is the fact that in the case of an overload or in the case of a failure of a transmission link or switching component - for example a switching network in the subscriber's loop of communications systems - it is possible to use an alternative route or a different switching and transmission resource. For this purpose, a plurality of ATM
communications-network-specific destination information items can be assigned to one communications-network-specific destination information item - claim 5. As a result of the additional ATM-communications-network-specific destination information, alternative routes are determined which are used in the event of the failure of the usual route or transmission S link, or, for example, the prioritized route or transmission link. This means that in the event of a fault or overload the switched connections between time-division-multiplex-oriented components are switched via alternative ATM switched connections. The assignment of ATM-communications-network-specific destination information to communications-network-specific destination information is predefined, or can be predefined via appropriate settings - for example program settings.
According to one further refinement of the method according to the invention, in the case of directly successive connection setups between time-division-multiplex-oriented components of the communications network (KN), the ATM switched connection is held - claim 2. This reduction in the signaling traffic can reduce the dynamic loading of the ATM-oriented or time division-multiplex-oriented communications network.
The connection setup and release and the exchange of information are advantageously carried out on the basis of the standardized ISDN protocol - claim 3, the switched connections being advantageously switched between time-division-multiplex-oriented components in the subscriber's loop of the communications terminals of time-division-multiplex-oriented communications systems via ATM switched connections - claim 4.
Owing to the relatively low traffic values per connected communications terminal, the use of the method according to the invention in the subscriber's loop of the communications terminals of communications systems is most effective because the ATM switched connections according to the invention permit switching and transmission resources to be used by a plurality of connected communications terminals, and in addition permit alternative routing of the time-division-multiplex-oriented switched connections in the event of a fault or overload.
Further advantageous refinements of the invention, in particular of an adapter device for implementing the method according to the invention, can be found in the further claims.
The method according to the invention and the adapter device according to the invention will be explained in more detail below with reference to a block circuit diagram.
The block circuit diagram shows time-division-multiplex-oriented communications terminals KE.., which are assigned to a time-division-multiplex-oriented communication system KS -for example to a private communications system - in which, according to the invention, the communications terminals KE..
are each connected to an adapter device ANT - for the sake of further explanation the block circuit diagram illustrates in each case one communications terminal KE and one adapter device ANP. The connection of the communications terminals KE.. can be made, for example, either via an ISDN basic access SO or an ISDN line termination U. Depending on the type of connection, an appropriately implemented line unit AE-ZM is provided in the adapter device ANP. Alternatively, types of connection such as, for example, analog a/b connection or even wireless DECT connection are possible, and in such a case the line unit AE-ZM is to be implemented in accordance with the respective type of connection - in both physical and procedural terms.
By analogy with the connection of a communications terminal KE.., an ATM line unit AE-ATM is implemented in the adapter device ANP in order to make a connection to an ATM
communications network ATM-KN. The ATM line unit AE-ATM has an ATM communications line KA, via which the adapter device ANP
is connected to the ATM communications network ATM-KN.
Furthermore, the adapter device ANP has a control unit ST
which is connected to the time-division-multiplex-oriented line unit AE-ZM and the ATM line unit AE-ATM via a bus system B and which implements in programming terms the majority of the procedural properties of the connections S0, U, KA
provided in the two line units AE-ZM, AE-ATM. According to the invention, a table TAB in which an original information item -usually the call number rnr of the calling communications terminal KE is assigned an ATM-communications-network-specific destination information item vpi-vci is stored in the control unit ST. The ATM-communications-network-specific destination information vpi, vci is determined by a virtual path information item vpi and by virtual channel information item vci. The ATM-communications-network-specific destination information vpi, vci is defined in such a way that a connection setup, initiated by the communications line KA, to a predefined i.e. specific further communications line KA' is implemented.
A further adapter device ANP', which is implemented in the same way, is connected to this further communications line KA'. For the exemplary embodiment it will be assumed that the connection to the time-division-multiplex-oriented communications system KS is implemented by means of an ISDN
line termination. Alternatively, terminations such as ISDN
basic accesses S0, ISDN primary accesses S2 or the standardized terminations V.5 for feeder networks are possible, in which case the line unit AE-ZM in the further adapter device ANP is to be configured in accordance with the type of termination in question. The procedural properties of the respective terminations KA, U, V and the routines according to the invention are in turn implemented in the control unit ST. In contrast to the control unit ST in the adapter device ANP, a table TAB in which a destination information item, i.e. the call number znr of a called communications terminal KE.. is assigned an ATM
communications-network-specific destination information item vpi, vci, i.e. a virtual path and channel information item vpi, vci, is provided in the control unit ST of the further adapter device ANP'. This virtual path and channel information item determines the communications termination KA to which the (lacuna] is connected by the call number zrn of the called communications terminal KE.. by means of the respective adapter device ANP. This means that in the case of a connection setup initiated by the communications system KS, an ATM switched connection SVC is automatically set up, in accordance with the specified destination call number zrn, to that communications termination KA to which the communications terminal KE.. which is determined by the destination call number zrn is connected.
In the lower part of the block circuit diagram, there is a flowchart which will be used to explain the method according to the invention. In the case of a connection setup SETUP WV
(si) initiated by the illustrated communications terminal KE, via the ISDN line termination U an ATM-communications-network-specific virtual path and channel information item vpi, vci is derived automatically in the adapter device ANP, using the table TAB, from the call numbers rnr given in the signaling information si - in particular from the call number rnr of the calling communications terminal KE. The derived virtual path and channel information vpi, vci is used to set up an ATM
communications network ATM-KN. The ATM line unit AE-ATM has an ATM communications line KA, via which the adapter device ANP
is connected to the ATM communications network ATM-KN.
Furthermore, the adapter device ANP has a control unit ST
which is connected to the time-division-multiplex-oriented line unit AE-ZM and the ATM line unit AE-ATM via a bus system B and which implements in programming terms the majority of the procedural properties of the connections S0, U, KA
provided in the two line units AE-ZM, AE-ATM. According to the invention, a table TAB in which an original information item -usually the call number rnr of the calling communications terminal KE is assigned an ATM-communications-network-specific destination information item vpi-vci is stored in the control unit ST. The ATM-communications-network-specific destination information vpi, vci is determined by a virtual path information item vpi and by virtual channel information item vci. The ATM-communications-network-specific destination information vpi, vci is defined in such a way that a connection setup, initiated by the communications line KA, to a predefined i.e. specific further communications line KA' is implemented.
A further adapter device ANP', which is implemented in the same way, is connected to this further communications line KA'. For the exemplary embodiment it will be assumed that the connection to the time-division-multiplex-oriented communications system KS is implemented by means of an ISDN
line termination. Alternatively, terminations such as ISDN
basic accesses S0, ISDN primary accesses S2 or the standardized terminations V.5 for feeder networks are possible, in which case the line unit AE-ZM in the further adapter device ANP is to be configured in accordance with the type of termination in question. The procedural properties of the respective terminations KA, U, V and the routines according to the invention are in turn implemented in the control unit ST. In contrast to the control unit ST in the adapter device ANP, a table TAB in which a destination information item, i.e. the call number znr of a called communications terminal KE.. is assigned an ATM
communications-network-specific destination information item vpi, vci, i.e. a virtual path and channel information item vpi, vci, is provided in the control unit ST of the further adapter device ANP'. This virtual path and channel information item determines the communications termination KA to which the (lacuna] is connected by the call number zrn of the called communications terminal KE.. by means of the respective adapter device ANP. This means that in the case of a connection setup initiated by the communications system KS, an ATM switched connection SVC is automatically set up, in accordance with the specified destination call number zrn, to that communications termination KA to which the communications terminal KE.. which is determined by the destination call number zrn is connected.
In the lower part of the block circuit diagram, there is a flowchart which will be used to explain the method according to the invention. In the case of a connection setup SETUP WV
(si) initiated by the illustrated communications terminal KE, via the ISDN line termination U an ATM-communications-network-specific virtual path and channel information item vpi, vci is derived automatically in the adapter device ANP, using the table TAB, from the call numbers rnr given in the signaling information si - in particular from the call number rnr of the calling communications terminal KE. The derived virtual path and channel information vpi, vci is used to set up an ATM
switched connection SVC to the communications termination KA
to which the associated, further adapter device ANP' is connected. Signaling information si for the rest of the connection setup SETUP WV (si) is transferred using the communications system KS via the ATM switched connection SVC
which has been set up. After the connection setup SETUP WV
(si) has been terminated in the direction of the communications terminal KE, on the basis of ISDN user and signaling information ni, si - for example digitized voice information and signaling information for the performance feature controller - are transferred while there is a switched connection WV.
After the transfer of information, the communications terminal KE releases the switched connection WV by means of an appropriate ISDN signaling operation RELEASE WV, and the switched connection WV is released up to the communication system KS - or to the called communications terminal KE - (not illustrated). Subsequently, the ATM switched connection SVC is also released. The switching and transmission resources of the ATM communications network ATM-KN which are taken up by the ATM switched connection SVC are thus released and are available for further communication connections between the communications terminals KE.. which are connected via the ATM
communications network ATM-KN. This temporary seizure of switching and transmission resources for the duration of a time-division-multiplex-oriented switched connection WV
enables the switching and transmission resources of the ATM
communications network to be utilized considerably more effectively.
In the case of communications setups (not illustrated) which have been initiated from the communications system KS to a communications terminal KE, the ATM-communications-network-specific virtual path and channel information vpi, vci is derived from the destination numbers zrn specified in the signaling information, and an ATM switched connection SVC is set up in accordance with the derived virtual path and channel information vpi, vci, the communications termination KA of the ATM communications network ATM-KN to which the communications terminal KE which is determined by the specified destination call number zrn is connected being determined by the derived virtual path and channel information vpi, vci. The derivation of the virtual path and channel information vpi, vci is effected using the table TAB which is implemented in the other adapter device ANP'.
to which the associated, further adapter device ANP' is connected. Signaling information si for the rest of the connection setup SETUP WV (si) is transferred using the communications system KS via the ATM switched connection SVC
which has been set up. After the connection setup SETUP WV
(si) has been terminated in the direction of the communications terminal KE, on the basis of ISDN user and signaling information ni, si - for example digitized voice information and signaling information for the performance feature controller - are transferred while there is a switched connection WV.
After the transfer of information, the communications terminal KE releases the switched connection WV by means of an appropriate ISDN signaling operation RELEASE WV, and the switched connection WV is released up to the communication system KS - or to the called communications terminal KE - (not illustrated). Subsequently, the ATM switched connection SVC is also released. The switching and transmission resources of the ATM communications network ATM-KN which are taken up by the ATM switched connection SVC are thus released and are available for further communication connections between the communications terminals KE.. which are connected via the ATM
communications network ATM-KN. This temporary seizure of switching and transmission resources for the duration of a time-division-multiplex-oriented switched connection WV
enables the switching and transmission resources of the ATM
communications network to be utilized considerably more effectively.
In the case of communications setups (not illustrated) which have been initiated from the communications system KS to a communications terminal KE, the ATM-communications-network-specific virtual path and channel information vpi, vci is derived from the destination numbers zrn specified in the signaling information, and an ATM switched connection SVC is set up in accordance with the derived virtual path and channel information vpi, vci, the communications termination KA of the ATM communications network ATM-KN to which the communications terminal KE which is determined by the specified destination call number zrn is connected being determined by the derived virtual path and channel information vpi, vci. The derivation of the virtual path and channel information vpi, vci is effected using the table TAB which is implemented in the other adapter device ANP'.
Claims (8)
1. A method for switching switched connections (WV) between time-division-multiplex-oriented components (KE, KS) of a communications network (KN) via an ATM communications network (ATM-KN), - in which, in the case of a connection setup (SETUP) initiated by a time-division-multiplex-oriented component (KE, KS), an ATM-communications-network-specific destination information item (vpi, vci) is derived from a specified signaling information item (rnr, znr), - in which, on the basis of the derived destination information (vpi, vci), an ATM switched connection (SVC) is automatically set up in the ATM communications network (ATM-KN), - in which, within the scope of the connection setup (SETUP) and of an exchange of information between the time-division-multiplex-oriented components (KE, KS), signaling and user information (si, ni) is transferred transparently via the ATM
switched connection (SVC) which is set up in the ATM
communications network (ATM-KN), and - in which, in the case of a connection release (RELEASE) between the time-division-multiplex-oriented component (KE, KS), the ATM switched connection (SVC) in question in the ATM
communications network (ATM-KN) is released.
switched connection (SVC) which is set up in the ATM
communications network (ATM-KN), and - in which, in the case of a connection release (RELEASE) between the time-division-multiplex-oriented component (KE, KS), the ATM switched connection (SVC) in question in the ATM
communications network (ATM-KN) is released.
2. The method as claimed in claim 1, characterized in that, in the case of successive connection setups (SETUP) between time-division-multiplex-oriented components (KE, KS) of the communications network (KN), the ATM switched connection (SVC) is held.
3. The method as claimed in claim 1, characterized in that the connection setup and release (SETUP, RELEASE) and the exchange of information is carried out on the basis of the standardized ISDN protocol.
4. The method as claimed in one of the preceding claims, characterized in that the time-division-multiplex-oriented components (KE, KS) are implemented in the subscriber's loop (AN) of the communications terminals of time-division-multiplex-oriented communications systems (KS).
5. The method as claimed in one of the preceding claims, characterized in that the relationship between communications-network-specific signaling information (si) and ATM-communications-network-specific destination information (vpi, vci) is predefined, it being possible to assign a plurality of ATM-communications-network-specific destination information items (vpi, vci) to a communications-network-specific destination information item (rnr, znr) as part of a superordinate switching strategy.
6. The method as claimed in one of the preceding claims, characterized in that, when switched connections (WV) are being switched in the subscriber's loop (AN) of communications terminals of time-division-multiplex-oriented communications systems (KS), - in the case of a connection setup (SETUP) initiated by a communications terminal KE, the specified signaling information (si) is represented by a call number (rnr) indicating the calling communications terminal (KE), and - in the case of a connection setup (SETUP) initiated by the communications system (KS), the specified signaling information (si) is represented by the call number (zrn) of the called communications terminal (KE).
7. The method as claimed in claim 6, characterized in that the ATM-communications-network-specific destination information (vpi, vci) is derived - from the call number (rnr) of the called communications terminal (KE) in the case of a connection setup (SETUP) initiated by the communications terminal (KE), and - from the call number (zrn) of the called communications terminal (KE) in the case of a connection setup initiated by the communications system (KS).
8. An adapter device for switching switched connections (WV) between time-division-multiplex-oriented components (KE, KS) of a communications network (KN) via an ATM communications network (ATM-KN), - having in each case one line unit (AE-ATM, AE-KN) for connecting to the communications network (KN) and to the ATM
communications network (ATM-KN), and - having a program-controlled control unit (ST) which is equipped -- with an evaluation routine (AR) for deriving an ATM-communications-network-specific destination information item (vpi, vci) from a destination information item (rn) which is specified in the case of a connection setup initiated by a time-division-multiplex-oriented component, -- with a signaling routine (SR) for setting up an ATM
switched connection (SVC) on the basis of the derived destination information (vpi, vci) in the ATM communications network (ATM-KN), -- with transmission means for the transparent transfer of signaling and user information (si, ni) via the ATM switched connection (SVC), set up in the ATM communications network (ATM-KN), as part of the connection setup and release and of an exchange of information between the time-division-multiplex-oriented components, and -- with a signaling routing (SR) for releasing the ATM
switched connection (SVC) in the case of aconnection release between the time-division-multiplex-oriented components.
communications network (ATM-KN), and - having a program-controlled control unit (ST) which is equipped -- with an evaluation routine (AR) for deriving an ATM-communications-network-specific destination information item (vpi, vci) from a destination information item (rn) which is specified in the case of a connection setup initiated by a time-division-multiplex-oriented component, -- with a signaling routine (SR) for setting up an ATM
switched connection (SVC) on the basis of the derived destination information (vpi, vci) in the ATM communications network (ATM-KN), -- with transmission means for the transparent transfer of signaling and user information (si, ni) via the ATM switched connection (SVC), set up in the ATM communications network (ATM-KN), as part of the connection setup and release and of an exchange of information between the time-division-multiplex-oriented components, and -- with a signaling routing (SR) for releasing the ATM
switched connection (SVC) in the case of aconnection release between the time-division-multiplex-oriented components.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19732676.5 | 1997-07-29 | ||
| DE19732676A DE19732676C2 (en) | 1997-07-29 | 1997-07-29 | Method and adaptation device for switching dial-up connections between time-multiplex-oriented components of a communication network via an ATM communication network |
| PCT/DE1998/002059 WO1999007179A1 (en) | 1997-07-29 | 1998-07-22 | Method and device for adapting the setting up of connections by switching between a communication network components with time division multiplexing via an atm communication network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2297903A1 true CA2297903A1 (en) | 1999-02-11 |
Family
ID=7837277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002297903A Abandoned CA2297903A1 (en) | 1997-07-29 | 1998-07-22 | Method and adapter device for switching switched connections between time-division-multiplex-oriented components of a communications network via an atm communications network |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1000523B1 (en) |
| CA (1) | CA2297903A1 (en) |
| DE (2) | DE19732676C2 (en) |
| WO (1) | WO1999007179A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3202720B2 (en) | 1999-02-25 | 2001-08-27 | 日本電気株式会社 | Method and network system for assigning VPI values to multiple user devices |
| WO2013076102A1 (en) | 2011-11-22 | 2013-05-30 | MAX-PLANCK-Gesellschaft zur Förderung der Wissenschaften e.V. | Method and device for generating a non-thermal plasma having a predetermined ozone concentration |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4224388C1 (en) * | 1992-07-23 | 1993-07-22 | Siemens Ag, 8000 Muenchen, De | |
| JP2646948B2 (en) * | 1992-12-25 | 1997-08-27 | 日本電気株式会社 | Signaling method in packet network |
| JP2518515B2 (en) * | 1993-05-27 | 1996-07-24 | 日本電気株式会社 | High-speed connection setup packet switch |
| US5490141A (en) * | 1994-09-30 | 1996-02-06 | International Business Machines Corporation | System and method for providing SVC service through an ATM network for frame relay DTEs with a terminal adapter |
| GB2297881B (en) * | 1995-02-09 | 1999-02-17 | Northern Telecom Ltd | Communications system |
| DE19534754C1 (en) * | 1995-09-19 | 1996-11-07 | Siemens Ag | Narrowband cable bundle exchange method |
| DE19534755C1 (en) * | 1995-09-19 | 1997-01-30 | Siemens Ag | Method for switching narrowband trunk groups between communication systems via an ATM communication network |
| JP2827985B2 (en) * | 1995-10-09 | 1998-11-25 | 日本電気株式会社 | ATM switch and control method |
| DE19604244A1 (en) * | 1996-02-06 | 1997-08-07 | Siemens Ag | Transmission system for the transmission of digital signals |
-
1997
- 1997-07-29 DE DE19732676A patent/DE19732676C2/en not_active Expired - Lifetime
-
1998
- 1998-07-22 DE DE59814115T patent/DE59814115D1/en not_active Expired - Lifetime
- 1998-07-22 EP EP98945026A patent/EP1000523B1/en not_active Expired - Lifetime
- 1998-07-22 CA CA002297903A patent/CA2297903A1/en not_active Abandoned
- 1998-07-22 WO PCT/DE1998/002059 patent/WO1999007179A1/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| WO1999007179A1 (en) | 1999-02-11 |
| EP1000523A1 (en) | 2000-05-17 |
| DE19732676A1 (en) | 1999-02-04 |
| EP1000523B1 (en) | 2007-10-31 |
| DE59814115D1 (en) | 2007-12-13 |
| DE19732676C2 (en) | 2002-01-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |