WO2000008892A1 - Verfahren zum betreiben einer anschlusseinheit in einer vermittlungsstelle - Google Patents
Verfahren zum betreiben einer anschlusseinheit in einer vermittlungsstelle Download PDFInfo
- Publication number
- WO2000008892A1 WO2000008892A1 PCT/EP1999/004626 EP9904626W WO0008892A1 WO 2000008892 A1 WO2000008892 A1 WO 2000008892A1 EP 9904626 W EP9904626 W EP 9904626W WO 0008892 A1 WO0008892 A1 WO 0008892A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- connection
- signaling
- data
- application programs
- subscriber
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
- H04Q11/0407—Selecting arrangements for multiplex systems for time-division multiplexing using a stored programme control
Definitions
- the invention relates to a method for operating a line unit in a switching center, in which switching technology processes are carried out when application programs are executed.
- a mediation process is e.g. the signaling for a first participant.
- Further switching-related processes relate to connection control when a connection is set up and cleared down between the first subscriber and a second subscriber.
- the execution of the application programs is controlled by an operating system that serves as a link between application programs and electronic components of the computer.
- the operating system controls various operating functions of the computer and takes on central tasks such as memory management and device control.
- the invention also relates to a method for operating a line unit in a switching center, in which the signaling with a further switching center and the connection control are carried out when executing application programs.
- the invention further relates to connection units for performing the methods.
- a previously used application program carries out both the signaling and the connection control. Signaling data and connection data are processed. Due to its size, the application program previously used for signaling and connection control is difficult to understand. This results in a lot of effort when creating and maintaining the application program. In addition, for each transmission protocol that is used on a subscriber, connection or interoffice signaling can occur, uses its own application program. This also makes it difficult to create and maintain the application programs.
- the invention is based on the knowledge that the signaling and the connection control are two clearly distinguishable functions of the exchange. Such different functions can be carried out in different application programs.
- a separation of the common application program previously used for signaling and for establishing a connection into two application programs is made more difficult by the fact that signaling and connection control form a uniform state- and event-controlled method.
- states are defined which are run through according to a predetermined sequence depending on switching technology events. This sequence contains steps for signaling and steps for connection control, whereby it is usually repeated between steps for signaling and steps for connection control.
- a first application program for signaling (LIP - line processing) and a second application program for connection control (CAP - call processing) are used.
- a message interface enables the two application programs to have a uniform Realize the state and event-driven process.
- the message interface includes specifications on the structure of the data to be transferred and specifications on the type of transfer.
- the associated data is transferred using the operating system. This measure ensures that, in contrast to a subroutine call, a further message can be generated by the same application program, it not being necessary for the previous message to have already been processed by the other application program.
- the message interface enables the application programs to be modularized according to their function. This makes the application programs manageable and therefore easy to develop and maintain.
- the method according to the invention also makes it possible to create an application program for each of the different signaling protocols.
- the interface is defined so that an application program for connection control can work together with the various application programs for signaling. This measure results in memory space savings as soon as two or more protocols are used for signaling in the exchange and if the same command sequence is used when processing the second application programs, as explained below using the exemplary embodiments.
- an application program for signaling can also work together with various application programs for connection control, such as those used for the “three-party conference” or “call waiting” features.
- connection units for a switching center.
- the method according to the invention is carried out with these connection units.
- the technical effects mentioned above also apply to the connection units. Exemplary embodiments of the invention are explained below with reference to the accompanying drawings. In it show:
- FIG. 2 shows a connection unit with a plurality of connection modules
- Figure 3 is a representation of the processes in the connection unit
- Figure 4 shows a message block with associated data block.
- connection units 12 and 14 show in a telecommunications network 8 a switching center 10, also abbreviated VSt, with a plurality of line units 12 to 16, the structure of which is explained with reference to the line unit 12 in FIG. Dots indicate further connection units arranged between the connection units 12 and 14.
- a connecting line 18 connects the connection unit 12 to a concentrator unit 20 to which a large number of subscribers is connected, of whom a subscriber Tlnl is shown in FIG.
- the concentrator unit 20 bundles the lines coming from the subscribers in such a way that only one line 18 has to be used for the transmission of the voice data to the switching center 10.
- the concentrator unit 20 divides the voice data received via the line 18 onto the subscriber's connecting lines.
- the PCM voice data is transmitted according to a first protocol P1, which is a SIEMENS internal protocol.
- standardized protocols are also used as the protocol P1, for example the protocol le MULDEX, V51 or V52.
- Several PCM30 systems or also PCM24 systems with 24 voice channels can also be used on the connecting line 18.
- a connecting line 22 connects the connection module 14 to a telecommunication system 24.
- the telecommunication system 24 enables e.g. to convey internal communication traffic to a company within its private premises, or to establish external connections.
- One of the subscribers connected to the telecommunications system 24 is shown in FIG. 1 as subscriber Tln2.
- the voice data is transmitted between the telecommunications system 24 and the connection unit 14 in accordance with a protocol P2 which differs from the protocol P1.
- connection unit 16 is connected to a further switching center 26 via a connecting line 28.
- the transmission of voice and signaling data on the connection line 28 takes place in accordance with a protocol P3, which was selected from protocols which are specially designed for the connection of two switching centers.
- a connection from the subscriber Tlnl to a subscriber Tln3 connected to the switching center 26 is established by means of the connection unit 16.
- the switching center 10 also contains a main switching matrix 30 and a central processor 32. All the connection units 12 to 16 are connected to the switching matrix 30 via connecting lines 34 to 38. Each connecting line 34 to 38 has a transmission capacity of eight Mbit per
- the central processor 32 controls the switching of connections in the switching matrix 30. For example, the central processor 32 switches a voice channel 40, via which the subscriber Tlnl can speak to the subscriber Tln2.
- a message channel 42 is previously used by the connection unit 12 to the central processor 32nd to announce that the subscriber Tlnl wants to establish a connection to the subscriber Tln2.
- further control data are exchanged between the connection units 12 to 16 and the central processor via the message channel 40 or via message channels 42 ', 42''.
- connection unit 16 shown in Fig. 1 is used for signaling between the switching centers 10 and 26. There are also signaling programs and connection programs in the connection unit 16, which exchange data via a message interface.
- FIG. 2 shows the structure of the connection unit 12, which contains four connection modules, of which two connection modules 50 and 52 are shown in FIG.
- the connecting line 18 is connected to the connection module 50.
- the connection module 50 is able to work according to protocol P1.
- a line 54 is connected to the connection module 52, which leads to a further telecommunications system, not shown.
- the protocol used for transmission over the connection line 54 is the protocol P2.
- the connection module 52 is able to work according to protocol P2 for telecommunication systems.
- the connection unit 12 also contains a group switching matrix 56 and a group processor 58.
- the connection modules 50 to 52 are connected to the group switching matrix 56 via connecting lines 60 to 62, so that in the group switching matrix 56 connections between the connection units 50 to 52 and an interface 64 can be switched.
- the interface 64 is connected to the group switching network 56 via a connecting line 66 and to the group processor 58 via a connecting line 68.
- the connecting line 34 is connected on the other side of the interface 64.
- the connection 40 shown in FIG. 1 from the subscriber Tlnl to the subscriber Tln2 is switched using a connection 70 in the switching matrix 56.
- the transmission channel for the connection from the subscriber Tlnl to the subscriber Tln2 is thus switched via the connection line 18, the connection module 50, the connection line 60, the connection 70, the connection line 66, the interface 64 and the connection line 34.
- connection modules 50 to 52 are connected to the group processor 58 via a bus system 72.
- the group processor 58 can control the switching of connections in the group switching network 56 via the bus system 72.
- connection unit 12 also contains a signal unit
- the signal unit 74 which contains, among other things, a tone generator, a ringing current generator, a counting pulse generator and a double-tone selective call receiver (DTMF-Dual Tone Multifrequency).
- the signal unit 74 is connected to the connection modules 50, 52, the group switching network 56 and to the group processor 58 via connections (not shown).
- the connection unit 12 also contains a memory unit 76 which is connected to the group processor 58 via a bus 78. Programs are stored in the memory unit 76, the processing of which is implemented by the group processor 58, the signaling and the connection control.
- FIG. 3 shows processes occurring in the connection unit 12.
- an operating system BS also stored in the memory 76
- the circuits contained in the connection unit 12 are activated, for example the connection modules 50, 52 or the interface 64.
- the operating system BS is thus the link between the circuitry components in the connection unit 12 and so-called application program men, when processing the connection unit 12 performs switching functions.
- signaling programs 100 to 104 and connection programs 110 to 114 are shown in FIG.
- the signaling program 100 is used for a connection which a subscriber TlnAl connected to the line 18 establishes to a subscriber TlnBl.
- the signaling program 100 is executed, the signaling is carried out on the connection module 50, so that voice data and signaling data are transmitted in accordance with protocol P1.
- the connection program 110 is used to connect the subscriber TlnAl to the subscriber TlnBl.
- the connection control is carried out, i.e. establishing the connection, switching through the group switching network, etc., and clearing the connection. Data is exchanged between the signaling program 100 and the connection program 110 exclusively via a message interface 120. Both the signaling program 100 and the connection program 110 operate according to the state-incentive principle.
- the operating system BS is used for data exchange via the message interface 120.
- the signaling program If, for example, data are to be transmitted from the signaling program 100 via the message interface 120 to the connection program 110, the signaling program generates a message block which, as explained below with reference to FIG. 4, is stored in a predetermined memory area in the memory 76 of the connection unit 12, cf. . Arrow 122. Then the signaling Program 100 the operating system BS from generating the message block, cf. Arrow 124. The operating system controls the execution of the application programs 100 to 114. The operating system BS recognizes from the message indicated by the arrow 124 that the signaling program 100 has generated a message block for the connection program 110. As a result, the operating system BS causes the connection program 110 to be processed now, cf. Arrow 126.
- connection program 110 When the connection program 110 is processed, the message block stored in the memory is read, cf. Arrow 128. The message contained in the message block is processed by the connection program 110. A predetermined state is then reached again when the connection program 110 is processed. The link program 110 then waits for a new incentive. This incentive comes, for example, from the subscriber TlnBl, whereupon the operating system BS causes the connection program 110 to be executed again.
- the message interface 120 is also used. Again, a message block is used for this, which is stored in the memory, cf. Arrow 130.
- the connection program 110 then notifies the operating system BS of the generation of the message block, cf. Arrow 132.
- the operating system BS causes the associated signaling program 100 to be restarted, cf. Arrow 134.
- the message block generated by the connection program 110 is then read, cf. Arrow 136.
- the structure of a message block is explained in more detail below with reference to FIG. 4.
- a further connection between a subscriber TlnA2 connected to the connection module 52 and a subscriber TlnB2 is initiated by the subscriber TlnA2.
- the signaling program 102 uses the protocol P2.
- this signaling program 102 is executed, the connection module 52 is activated.
- the signaling programs 100 and 102 thus differ because they control circuit components that generate signals in accordance with various protocols P1 and P2.
- connection program 112 is used for the connection control for the connection of the subscribers TlnA2 and TlnB2.
- the connection control is independent of the signaling protocol P1 or P2 used, so that the same connection program is used for connections 110 and 112.
- the message interface 120 is again used, cf. Arrows 138 to 144.
- the exchange of message blocks takes place when the signaling program 102 or the connection program 112 is processed in the same manner as explained above for the signaling program 100 and the connection program 110.
- the operating system BS is also included in the exchange of message blocks between the signaling program 102 and the connection program 112.
- FIG. 3 also shows a connection between a subscriber TlnA3 and a subscriber TlnB3, which the subscriber TlnA3 at the exchange 26, cf.
- has been Figure 1 causes the subscriber is connected at the TlnB3 Kon ⁇ center rato purity 20th
- the signaling program 104 and the connection program 114 are used to connect the subscribers TlnA3 and TlnB3.
- the connection program 114 differs from the connection program 110 or 112 because the connection control on the called B side is to be carried out differently than the signaling on the calling A side.
- the signaling program 104 contains on the other hand, the same command sequences as the signaling program 100, because both signaling programs 100 and 104 operate according to the same protocol P1 and the protocol P1 is a so-called double-directional protocol which works in the direction towards the calling A subscriber as well as towards the called B subscriber .
- the message interface 120 is used, cf. Arrows 146 to 152, which includes the operating system BS.
- connection program 110 or 112 there is only a single command sequence in the memory of the connection unit 12 for the processing programs 110 and 112.
- Each connection program 110 or 112 is imagined
- connection program 110 or 112 belongs to the respective interface.
- connection program 110 or 112 belonging to the respective interface notes the last state in the interface data.
- the command sequence common to the connection programs 110 and 112 it is known which connection program 110 and 112 is currently to be processed.
- the last processing status can be determined and processing can be continued in this status. The same procedure is followed if several signaling programs 100, 102 or 104 of the same protocol P1 or P2 and the same connection side are to be executed.
- FIG. 4 shows an example of a message block 200 and an associated data block 202, which are stored in a memory 204 of the connection module 12.
- Message block 200 includes a recipient address field 206, a data address field 208, a message identifier field 210, a sender identifier field 212, and a sender address field 214.
- the recipient address field 206 the address of the signaling program 100 to 104 or the connection program 110 to 114 for which the message block 200 is intended.
- the operating system BS determines the application program 100 to 114 which is to process the message block 200.
- the address of a first data field 220 of the data block 202 is contained in the data address field 208.
- the data block 202 can be accessed using the data address 208, cf. Arrow 216.
- the type of message contained in message block 200 is specified in message identifier field 210. Thus, the processing of the message block 200 of the type of the message can be performed.
- the identifier of the application program 100 to 114 that generated the message block 200 is noted in the transmitter identifier field 212.
- the address of the application program 100 to 114, which generated the message block 200, is noted in the sender address field 214.
- the data fields 212 and 214 are optionally evaluated when processing the message block 200.
- the data block 202 contains further data fields 222, 224 etc. in which data to be transmitted are stored.
- data field 214 the address of the application program 100 to 114 that generated data block 202 is stored in data field 220.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Telephonic Communication Services (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Exchange Systems With Centralized Control (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99932803A EP1103159B1 (de) | 1998-08-07 | 1999-07-02 | Verfahren zum betreiben einer anschlusseinheit in einer vermittlungsstelle |
DE59913310T DE59913310D1 (de) | 1998-08-07 | 1999-07-02 | Verfahren zum betreiben einer anschlusseinheit in einer vermittlungsstelle |
BR9912856-0A BR9912856A (pt) | 1998-08-07 | 1999-07-02 | Processo para o acionamento de uma unidade de ligação em um ponto de transmissão por meio de um ponto de corte de aviso entre o programa de sinalização e o programa de comando, bem como, unidades de ligação empregadas no processo |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98114942.0 | 1998-08-07 | ||
EP98114942 | 1998-08-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000008892A1 true WO2000008892A1 (de) | 2000-02-17 |
Family
ID=8232430
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1999/004626 WO2000008892A1 (de) | 1998-08-07 | 1999-07-02 | Verfahren zum betreiben einer anschlusseinheit in einer vermittlungsstelle |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1103159B1 (de) |
CN (1) | CN1146293C (de) |
AR (1) | AR021176A1 (de) |
BR (1) | BR9912856A (de) |
DE (1) | DE59913310D1 (de) |
ES (1) | ES2258336T3 (de) |
WO (1) | WO2000008892A1 (de) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0303870A2 (de) * | 1987-08-21 | 1989-02-22 | Siemens Aktiengesellschaft | Modular strukturiertes digitales Kommunikationssystem mit betriebstechnischen und sicherheitstechnischen Komponenten |
GB2240905A (en) * | 1990-01-31 | 1991-08-14 | Mitel Corp | Telephone or data switching system with variable protocol inter-office communication |
WO1993000776A1 (en) * | 1991-06-28 | 1993-01-07 | Telefonaktiebolaget Lm Ericsson | Application modularity in telecommunications exchanges |
EP0527260A1 (de) * | 1991-08-14 | 1993-02-17 | Siemens Aktiengesellschaft | Schnittstellenbaustein zur Unterstützung der Kommunikation zwischen Prozessorsystemen |
WO1995023492A1 (en) * | 1994-02-23 | 1995-08-31 | Harris Corporation | Multi-processing and direct routing of signalling protocols in voice communication channels |
WO1997048240A2 (en) * | 1996-06-13 | 1997-12-18 | Northern Telecom Inc. | Programmable service architecture for call control processing |
-
1999
- 1999-07-02 WO PCT/EP1999/004626 patent/WO2000008892A1/de active IP Right Grant
- 1999-07-02 CN CNB998119245A patent/CN1146293C/zh not_active Expired - Fee Related
- 1999-07-02 ES ES99932803T patent/ES2258336T3/es not_active Expired - Lifetime
- 1999-07-02 DE DE59913310T patent/DE59913310D1/de not_active Expired - Fee Related
- 1999-07-02 EP EP99932803A patent/EP1103159B1/de not_active Expired - Lifetime
- 1999-07-02 BR BR9912856-0A patent/BR9912856A/pt not_active IP Right Cessation
- 1999-08-06 AR ARP990103886 patent/AR021176A1/es not_active Application Discontinuation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0303870A2 (de) * | 1987-08-21 | 1989-02-22 | Siemens Aktiengesellschaft | Modular strukturiertes digitales Kommunikationssystem mit betriebstechnischen und sicherheitstechnischen Komponenten |
GB2240905A (en) * | 1990-01-31 | 1991-08-14 | Mitel Corp | Telephone or data switching system with variable protocol inter-office communication |
WO1993000776A1 (en) * | 1991-06-28 | 1993-01-07 | Telefonaktiebolaget Lm Ericsson | Application modularity in telecommunications exchanges |
EP0527260A1 (de) * | 1991-08-14 | 1993-02-17 | Siemens Aktiengesellschaft | Schnittstellenbaustein zur Unterstützung der Kommunikation zwischen Prozessorsystemen |
WO1995023492A1 (en) * | 1994-02-23 | 1995-08-31 | Harris Corporation | Multi-processing and direct routing of signalling protocols in voice communication channels |
WO1997048240A2 (en) * | 1996-06-13 | 1997-12-18 | Northern Telecom Inc. | Programmable service architecture for call control processing |
Non-Patent Citations (1)
Title |
---|
P. BOROJEVIC ET AL: "The principles of the software organization in the digital switching system DKTS", PROCEEDINGS OF THE MEDITERRANEAN ELECTROTECHNICAL CONFERENCE - MELECON '87, 1987, Italy, pages 47 - 51, XP002090211 * |
Also Published As
Publication number | Publication date |
---|---|
AR021176A1 (es) | 2002-07-03 |
DE59913310D1 (de) | 2006-05-18 |
BR9912856A (pt) | 2001-05-08 |
CN1322454A (zh) | 2001-11-14 |
EP1103159B1 (de) | 2006-04-05 |
EP1103159A1 (de) | 2001-05-30 |
ES2258336T3 (es) | 2006-08-16 |
CN1146293C (zh) | 2004-04-14 |
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