EP1410612A1 - Aufteilung der behandlung von sprachkanalbezogenen funktionen in einem telekommunikationsnetz wobei nur die wenig gebrauchten funktionen zentral bereitgestellt werden - Google Patents
Aufteilung der behandlung von sprachkanalbezogenen funktionen in einem telekommunikationsnetz wobei nur die wenig gebrauchten funktionen zentral bereitgestellt werdenInfo
- Publication number
- EP1410612A1 EP1410612A1 EP02754404A EP02754404A EP1410612A1 EP 1410612 A1 EP1410612 A1 EP 1410612A1 EP 02754404 A EP02754404 A EP 02754404A EP 02754404 A EP02754404 A EP 02754404A EP 1410612 A1 EP1410612 A1 EP 1410612A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- network
- data transmission
- voice channel
- related functions
- transmission 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
Links
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
- H04M3/487—Arrangements for providing information services, e.g. recorded voice services or time announcements
- H04M3/493—Interactive information services, e.g. directory enquiries ; Arrangements therefor, e.g. interactive voice response [IVR] systems or voice portals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M7/00—Arrangements for interconnection between switching centres
- H04M7/12—Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal
- H04M7/1205—Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal where the types of switching equipement comprises PSTN/ISDN equipment and switching equipment of networks other than PSTN/ISDN, e.g. Internet Protocol networks
- H04M7/125—Details of gateway equipment
- H04M7/1255—Details of gateway equipment where the switching fabric and the switching logic are decomposed such as in Media Gateway Control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M7/00—Arrangements for interconnection between switching centres
- H04M7/12—Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal
- H04M7/1205—Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal where the types of switching equipement comprises PSTN/ISDN equipment and switching equipment of networks other than PSTN/ISDN, e.g. Internet Protocol networks
- H04M7/126—Interworking of session control protocols
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M7/00—Arrangements for interconnection between switching centres
- H04M7/12—Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal
- H04M7/1205—Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal where the types of switching equipement comprises PSTN/ISDN equipment and switching equipment of networks other than PSTN/ISDN, e.g. Internet Protocol networks
- H04M7/129—Details of providing call progress tones or announcements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M7/00—Arrangements for interconnection between switching centres
- H04M7/12—Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal
- H04M7/1205—Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal where the types of switching equipement comprises PSTN/ISDN equipment and switching equipment of networks other than PSTN/ISDN, e.g. Internet Protocol networks
- H04M7/1295—Details of dual tone multiple frequency signalling
Definitions
- the present invention relates to a method for providing voice channel-related functions in a telecommunications network and a telecommunications network for performing this method.
- a switching node generally consists of peripheral units (connection devices for subscribers or lines), a central computer platform, a message distribution device and further central units such as switching matrix, protocol termination devices (for example for the signaling system No. 7 ), Background memory, controls, etc.
- the peripheral devices perform essential switching tasks linked to the voice channels of the peripheral device. They therefore contain switching, operational and administrative programs as well as the data associated with the facility, such as connection locations, signaling, authorizations, telephone numbers, individual characteristics of connecting lines and subscriber connections, and the condition and configuration of the peripheral facility.
- the central computer platform is used for the coordinating control of the connection setup and clearing as well as the reactions to administrative and error-related configuration changes.
- the classic peripheral device terminates the connecting lines for which it is responsible for processing the switching technology.
- the peripheral devices are interconnected via the message distribution system and with the common connected to the computer platform.
- the other central system components provide the switching system with special functions, for example for switching through the voice channels, processing the signaling protocols, implementing the operator interface or storing mass data.
- the central components of a switching system are designed redundantly (for example, doubled).
- the peripheral devices are not designed redundantly. In the case of more stringent failure requirements (for example saving stable connections beyond the failure of a peripheral device), however, they can be constructed redundantly.
- peripheral devices If signaling and speech are disassociated on separate paths and the peripheral devices only have the task of signaling processing and / or conversion without physical termination of the speech channels, then restrictions regarding the number of terminatable speech channels are eliminated. For this application, these logical peripheral devices are determined with regard to their capacity by the performance of the processors, the size of the memory and the capacity of the message interface.
- A-subscriber or an A-side trunk ie a connection line to a remote switching center
- any B-subscriber or a B-side trunk in In general, two different peripheral devices (PE) are always involved in establishing and clearing the connection, as shown in FIG. 2.
- the switching center which is active for the control of connections made outside the switching center can and / or B-side subscribers of classic telephone networks (for example TDM networks, time division multiple access) make known subscriber or network features available. This particularly includes announcements and dialogues that are necessary in certain situations (for example, "No connection under this number. *," The number has changed, the new number is 722-25940. "Or requesting authorization to dial in a packet network).
- classic telephone networks for example TDM networks, time division multiple access
- IVR systems are generally TDM-based (Time Division Multiplex) and combine the entire functional spectrum in order to be universally applicable.
- the disadvantage of this universality is the cost of using an IVR system as effectively as possible.
- Two usage scenarios are common in TDM-based data transmission networks with conventional switching centers (e.g. the classic telephone network), as described below:
- peripheral switching center facilities are equipped with hardware modules for the provision of announcements as well as DTMF (Discrete Tone Multi Frequency) and / or language ID introduced into the exchange.
- DTMF Discrete Tone Multi Frequency
- the subscriber / trunk is switched to a port of this special peripheral device for announcements and dialogs via a 64 kbit / s circuit. From a switching point of view, it is a through-connection from an A-side peripheral device via the coupling network to the B-side peripheral device with an announcement and dialog functionality-guided connection.
- the B-sided announcement / dialogue port acts like a B-sided trunk.
- the type of announcement or dialog functions to be played is carried out by internal signaling to the peripheral device with an announcement and dialog function or is predefined.
- the advantage of this implementation is the integration of the announcement and dialog function in the exchange, which is very inexpensive. Furthermore, there can be broad access to the hardware functionality of the peripheral device for announcement and dialog functionality.
- the disadvantage of this implementation is that if the user channel is packet-based or routed outside of the exchange, this functionality cannot be used or can only be used with an upstream gateway (see also FIG. 3) that controls the network transition between the TDM-based data transmission network (classic telephone network ) and the packet network (e.g. Internet). Furthermore, the voice data, which are available in the prior art in PCM / TDM technology (Pulse Code Modulation / Time Division Multiplex), must be converted into packet data. Furthermore, there is a user data load for announcements and dialogs at the controlling switching center and there is a loss of speech quality by converting the user data from the TDM / PCM system into packet data.
- announcements and dialogs are also provided at the network transition between the packet and TDM networks or by means of specially designed for announcement and dialog functions. chain-based IVR systems.
- the announcement and dialog functions are controlled by the call control server of the exchange that controls the connection.
- the disadvantage of this system is that the switching center that controls the switching center for connections carried in the packet network does not have access to the IVR functions available in the packet network.
- the object of the present invention is therefore to provide a method and devices for providing voice channel-related functions in a telecommunications network, in which a reduction in the data load over the data transmission network is achieved with minimal implementation effort.
- the IVR functionality is divided into two areas, taking into account the frequency of use and the complexity of the implementation. Rather rarely required voice channel-related functions are provided centrally by a first switching center, and frequently required voice channel-related functions are provided decentrally by several switching centers.
- the method according to the invention for providing voice channel-related functions in a telecommunications network thus provides the first voice channel-related functions that are used little and centrally, and the second voice channel functions that are used more frequently in a decentralized manner.
- the advantage of the present invention is that the telecommunications network which is used for the transmission of the voice data is relieved, since the voice channel functions are preferably called up by an announcement device which is in the vicinity of the calling subscriber.
- the voice channel-related functions are controlled centrally by a central controller.
- the control can take place via known protocols, e.g. according to the standards for signaling system No. 7 (SS7), MGCP (Media Gateway Control Protocol), H.248.
- SS7 signaling system No. 7
- MGCP Media Gateway Control Protocol
- H.248 H.248.
- the first voice channel-related functions can be complex dialog functions, such as, for example, querying the credit of a prepaid card, voice recognition, text-to-speech functionality, etc. with the associated actions, and the second voice channel-related functions can be sounds (such as, for example Dial tone, busy signal), simple dialogs, such as asking for a PIN number, simple announcements, such as "No connection under this number" or the detection of subscriber entries in the form of DTMF (Discrete Tone Multi Frequency) the first voice channel-related functions can also include simple announcements, tones and simple dialogues.
- complex dialog functions such as, for example, querying the credit of a prepaid card, voice recognition, text-to-speech functionality, etc. with the associated actions
- the second voice channel-related functions can be sounds (such as, for example Dial tone, busy signal)
- simple dialogs such as asking for a PIN number
- simple announcements such as "No connection under this number”
- subscriber entries in the form of DTMF Discrete Ton
- the first voice channel-related functions can be transmitted via a first data transmission network and the second voice channel-related functions can be transmitted via a second data transmission network.
- the second data transmission network is advantageously a circuit-switched data transmission network, such as the public telephone network (PSTN, Public Switched Telephone Network), and the first data transmission network is a packet-switched data transmission network, such as an IP-based data transmission network (Internet Protocol, e.g. Internet) or a ATM-based data transmission network (Asynchronous Transfer Mode).
- PSTN Public Telephone Network
- IP-based data transmission network Internet Protocol, e.g. Internet
- ATM-based data transmission network Asynchronous Transfer Mode
- the media gateway advantageously has the option of transmitting the second voice channel-related functions via the circuit-switched data transmission network and / or the packet-switched data transmission network.
- FIG. 1 shows the typical architecture of a classic switching center
- FIG. 2 shows the separate routing of speech and signaling
- FIG. 3 shows a schematic illustration for the transmission of voice over a packet-switched data transmission network
- Figure 4 shows an example of the provision of voice channel related functions
- Figure 5 shows another example of the application of the present invention in a telecommunications network.
- FIG. 4 shows an example of the provision of voice channel-related functions, such as announcements, tones, dialogues, etc., in a telecommunications network.
- Voice data can be transmitted as data packets either via a second data transmission network 6, for example the public telephone network using the TDM (Time Division Multiplex) or PCM (Pulse Code Modulation) method, or via a first data transmission network 5, for example an IP-based data transmission network become.
- a second data transmission network 6 for example the public telephone network using the TDM (Time Division Multiplex) or PCM (Pulse Code Modulation) method
- a first data transmission network 5 for example an IP-based data transmission network become.
- subscriber 8 PSTN subscriber 8
- IP subscriber 7 IP subscriber 7
- IP network 5 first data transmission network 5
- first voice channel-related functions which are required relatively little and / or require a high level of implementation, are provided centrally by a dialog device 3.
- This dialog device 3 can, for example, be an independent device or can be implemented in the packet network 5 by a switching center 9.
- second voice channel-related functions that are required more frequently and / or require less implementation effort than the first voice channel-related functions Functions provided decentrally by a plurality of network nodes 2a, 2b (media gateways 2a, 2b) by announcement devices 4a, 4b.
- the first voice channel-related functions that are required less frequently and generally require a high level of implementation are, for example, complex dialogues with voice recognition, such as querying a prepaid card balance, train information, text-to-speech functionality, etc. Such dialog functions are relatively complex to implement, since speech recognition, a database and / or corresponding access, etc. must be implemented.
- the first voice channel-related functions can also be standard announcements (e.g. "No connection under this number"), DTMF detection (Discrete Multitone Multi Frequency), tones, etc.
- Second voice channel-related functions that are required much more often and generally require a much lower implementation effort are, for example, tones (dial tone, busy signal, etc.), announcements ("The number has changed.”, Etc.) or simple dialogues such as for example, asking for a PIN (Personal Identification Nu ber).
- the control device 3 and the announcement devices 4a, 4b are controlled by the central control 1.
- the control takes place, for example, with regard to the type of announcement to be played, dialogues, etc., the routing of the respective voice channel-related functions, etc.
- the method according to the invention has the advantage that the decentralization of the second voice channel-related functions significantly reduces the data load in the transmission network since the transmission paths to the subscriber are shortened, and complex voice channel-related functions can still be implemented in a centralized manner in order to limit the implementation costs. Furthermore, the packet network 5 is relieved, since the second voice channel-related functions can be transmitted via the TDM network (public telephone network 6).
- the central controller 1 transmits signaling messages, e.g. to public telephone networks (second data transmission network 6) e.g. for the connection between an A subscriber and a B subscriber, etc.
- signaling messages e.g. to public telephone networks (second data transmission network 6) e.g. for the connection between an A subscriber and a B subscriber, etc.
- this central controller 1 controls the network nodes 2a, 2b, which are shown as media gateways in this example.
- the media gateways form the interface between a packet network (first data transmission network 5, for example IP network) and a public telephone network 6.
- the network nodes 2a, 2b also have the option of transferring the voice channel-related functions both into the first data transmission network 5 and into the second data transmission - import network 6.
- the signaling is carried out via various protocols, such as signaling system No. 7 (SS7) and the Media Gateway Control Protocol (MGCP).
- SS7 signaling system No. 7
- MGCP Media Gateway Control Protocol
- this Voice over IP network scenario that is to say when transmitting voice data over a packet network (first data transmission network 5), in which the functional blocks of a switching system are no longer implemented in a locally concentrated manner, but rather are arranged geographically distributed, additional aspects must now be implemented when implementing the IVR functionality are taken into account. Announcements and tones must be able to be recorded both in the direction of the packet network and in the direction of the TDM network and the load on the packet network caused by announcements and tones must be kept as low as possible.
- SS7 signaling system No. 7
- MGCP Media Gateway Control Protocol
- the geographical distribution of the network gateways makes the centralized design of an announcement and / or dialog system (Interactive Voice Response System, IVR system) seem very uneconomical because announcements and sounds over long distances, in extreme cases intercontinental , must be transferred.
- IVR system Interactive Voice Response System
- the implementation effort can be greatly reduced by a functional limitation.
- the functions of the second area are required more frequently, in extreme cases per call. They include the import of sounds, simple, not constantly changing announcements, such as. B. the query of a PIN and the detection participant input in the form of DTMF (Discrete Tone Multi Frequency).
- Tones and announcements transmitted over the telephone network do not create a load in the packet network.
- the decentralized arrangement increases the availability of the IVR functions in the network; in the event of failure, the IVR function of any other media gateway can be used. Since the IVR function is available on both sides of a connection, it can be used optimally. Tones and announcements for the A subscriber or A trunk are played in by the media gateway on the A side, on the B side analogously.
- the switching processes of the controlling system switching system for packet networks
- the switching system switching system for packet networks
- the prerequisite for this is that the IVR function is modeled in the form of "IVR ports".
- a connection that is introduced via a media gateway and that requires an IVR function is preferably provided by IVR resources in this gateway or in the vicinity of this gateway.
- the functions of the first area will continue to be implemented with a centralized approach.
- the transition to the packet network takes place either directly or using a media gateway. Due to the lower usage, the aspects of costs and network load take a back seat, whereas the Integration of a server and database environment with the centralized approach can be solved more effectively.
- the IVR functionality is thus divided into two areas, taking into account the frequency of use and the complexity of the implementation.
- the frequently required IVR functions are implemented in the peripheral unit of a packet network, i. H. in the media gateways.
- the IVR functionality is implemented in the media gateway in such a way that announcements and / or tones can be output in both the packet and the TDM network (as seen by the media gateway).
- complex, rarely required IVR functions are implemented using a centralized approach.
- IP-based IVR systems available outside the first switching node are modeled as virtual announcement ports on a new type of media gateway.
- This new type of gateway has two versions. If he only provides IVR resources, it is a universally applicable IVR system that only has the function of the IVR function. If, in addition to the IVR system, ports are also provided for the TDM ⁇ -> IP gateway, then this is a media gateway IVR system with reduced functionality that provides simple IVR functions (e.g. standard announcements in the form of so-called recorded announcements - ents). Both devices are controlled by the central controller 1 using MGCP.
- an announcement / dialog port is assigned on the B side.
- the type of IVR function is communicated to the port that provides announcement / dialog functions by further MGCP signaling.
- an extension of the MGCP protocol with parameters from H.248 is proposed, which include the required functions such as 'Send' Define tone xy 'or' game announcement xy '.
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Telephonic Communication Services (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10136225 | 2001-07-25 | ||
DE10136225A DE10136225A1 (de) | 2001-07-25 | 2001-07-25 | Verfahren und Vorrichtung zum Bereitstellen von sprachkanalbezogenen Funktionen in einem Telekommunikationsnetz |
PCT/DE2002/002688 WO2003013116A1 (de) | 2001-07-25 | 2002-07-22 | Aufteilung der behandlung von sprachkanalbezogenen funktionen in einem telekommunikationsnetz wobei nur die wenig gebrauchten funktionen zentral breitgestellt werden |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1410612A1 true EP1410612A1 (de) | 2004-04-21 |
Family
ID=7693046
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02754404A Ceased EP1410612A1 (de) | 2001-07-25 | 2002-07-22 | Aufteilung der behandlung von sprachkanalbezogenen funktionen in einem telekommunikationsnetz wobei nur die wenig gebrauchten funktionen zentral bereitgestellt werden |
Country Status (6)
Country | Link |
---|---|
US (1) | US7411938B2 (de) |
EP (1) | EP1410612A1 (de) |
CN (1) | CN1559138A (de) |
BR (1) | BR0211483A (de) |
DE (1) | DE10136225A1 (de) |
WO (1) | WO2003013116A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1606918B1 (de) | 2003-03-21 | 2007-11-28 | Siemens Aktiengesellschaft | Verfahren und vorrichtung zur bereitstellung und effizienten nutzung von ressourcen für das erzeugen und ausgeben von informationen in paketbasierten netzen |
CN1836432B (zh) * | 2003-06-17 | 2011-01-26 | 诺基亚西门子通信有限责任两合公司 | 通过简化处理信令信息在与分组网络中的语音对话系统进行用户交互时更节约的资源使用 |
US20060002403A1 (en) * | 2004-06-30 | 2006-01-05 | Glenayre Electronics, Inc. | Distributed IP architecture for telecommunications system |
US20060221983A1 (en) * | 2005-03-30 | 2006-10-05 | Lucent Technologies Inc. | Communications backbone, a method of providing a communications backbone and a telecommunication network employing the backbone and the method |
JP2008244685A (ja) * | 2007-03-27 | 2008-10-09 | Nec Corp | 輻輳制御システム、サービスエッジノード、ガイダンスサーバ、輻輳制御方法、そのプログラム及び記録媒体 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2280820A (en) * | 1993-07-29 | 1995-02-08 | Ibm | Distributed system for call processing |
WO1998048542A1 (en) * | 1997-04-22 | 1998-10-29 | Bell Communications Research, Inc. | Apparatus and method for internet telephony routing |
US6614885B2 (en) * | 1998-08-14 | 2003-09-02 | Intervoice Limited Partnership | System and method for operating a highly distributed interactive voice response system |
US6600736B1 (en) * | 1999-03-31 | 2003-07-29 | Lucent Technologies Inc. | Method of providing transfer capability on web-based interactive voice response services |
DE60041131D1 (de) * | 1999-05-17 | 2009-01-29 | Ericsson Telefon Ab L M | Verhandlung von fähigkeiten in einem telekommunikationsnetz |
KR100338682B1 (ko) * | 1999-12-29 | 2002-05-30 | 정 데이비드 | 공중전화망과 랜을 연결하는 게이트웨이에서 호처리 방법 |
-
2001
- 2001-07-25 DE DE10136225A patent/DE10136225A1/de not_active Withdrawn
-
2002
- 2002-07-22 BR BR0211483-6A patent/BR0211483A/pt not_active IP Right Cessation
- 2002-07-22 EP EP02754404A patent/EP1410612A1/de not_active Ceased
- 2002-07-22 CN CNA028187881A patent/CN1559138A/zh active Pending
- 2002-07-22 WO PCT/DE2002/002688 patent/WO2003013116A1/de active Application Filing
-
2004
- 2004-01-23 US US10/764,291 patent/US7411938B2/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO03013116A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20040151299A1 (en) | 2004-08-05 |
WO2003013116A1 (de) | 2003-02-13 |
BR0211483A (pt) | 2004-08-17 |
US7411938B2 (en) | 2008-08-12 |
DE10136225A1 (de) | 2003-02-13 |
CN1559138A (zh) | 2004-12-29 |
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