EP1525756A1 - Media gateway zur bereitstellung der pstn/isdn dienste in netzwerken der nächsten generation - Google Patents
Media gateway zur bereitstellung der pstn/isdn dienste in netzwerken der nächsten generationInfo
- Publication number
- EP1525756A1 EP1525756A1 EP03766151A EP03766151A EP1525756A1 EP 1525756 A1 EP1525756 A1 EP 1525756A1 EP 03766151 A EP03766151 A EP 03766151A EP 03766151 A EP03766151 A EP 03766151A EP 1525756 A1 EP1525756 A1 EP 1525756A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- media gateway
- network
- connection
- connection control
- control
- 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.)
- Withdrawn
Links
Classifications
-
- 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
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0016—Arrangements providing connection between exchanges
- H04Q3/0025—Provisions for signalling
-
- 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
- H04Q2213/13176—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
- H04Q2213/13196—Connection circuit/link/trunk/junction, bridge, router, gateway
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13389—LAN, internet
Definitions
- PSTN / ISDN which are based on the principle of line switching, they take over
- connection control e.g. two-way connection, three-way connection, feeding in tones.
- next generation networks are packet-based (e.g. ATM or IP as a transport level) and are designed for the transport of both voice and data. They work on the principle of separating connection and service channel control. In contrast to today's TDM networks, separate network elements are used in these networks for connection control (call and signaling control) and for user channel control (bearer or media control).
- the connection control is carried out by media gateway controllers (MGC), which use a media gateway control protocol (MGCP), currently MGCP or H.248 are available, to communicate with the media gateways (MG), which control the user channels.
- MCP media gateway control protocol
- MGCP media gateway control protocol
- H.248 media gateway control protocol
- the signaling is terminated in the Media Gateway Controller.
- the media gateway controllers in the NGN communicate with each other via a signaling protocol (e.g. BICC protocol) analogous to the switching centers of the PSTN / ISDN (e.g. # 7 signaling).
- a signaling protocol e.g. BICC protocol
- BICC protocol analogous to the switching centers of the PSTN / ISDN
- the network elements are physically and normally also physically separated. Spatially separated can mean that an MG and its controlling MGC can carry hundreds of stand meters apart or even communicate with each other via satellite links.
- a media gateway controller usually takes over the connection control for several media gateways.
- a media gateway based on today's NGN architecture master-slave concept is not able to switch connections independently or make other decisions regarding connection control without a media gateway controller.
- Figure 1 shows the principle of today's PSTN / ISDN networks.
- Figure 2 shows the example of the principle of voice communication in next-generation networks according to today's NGN understanding.
- connection and user channel control can lead to problems with the exact recording of the charge, since the user channel is switched in the media gateway, but the time stamp is recorded in the media gateway controller.
- the access network is connected to a TDM switch via the V5 interface, with the TDM switch working as the master and the access network as the slave.
- the problem - when connecting an access network to a TDM switch differs from the problems when using the NGN architecture in the following points,
- control and signaling messages are exchanged via a securely available message channel, the bandwidth of which is firmly defined
- An access gateway has only a limited useful channel control compared to a media gateway, because the user channel is managed by the TDM switch. The user channel is also routed via the TDM switch and only there is the creation of tones or charging.
- the invention provides a new division of functions for NGN, which is shown in Figure 3.
- a proxy-client approach is chosen, i.e. part of the connection control is integrated into the media gateway, while the remaining part of the connection control, in particular that relating to central control and monitoring tasks, remains in the media gateway controller.
- the media gateway controller designed according to the invention is referred to below as a network-central control device and the media gateway designed according to the invention is referred to below as an intelligent access gateway.
- a client proxy approach is selected to execute commands relating to the connection control.
- connection control functions that the Intelligent Access Gateway (client) performs itself are functions such as for the client of the calling subscriber (A) or client of the called subscriber (B)
- connection control functions which are accessible to local processing and are time-critical (in the above-mentioned functions, the time-critical functions are marked with an asterisk (*)).
- the task of the network-central control devices in the area of connection control is reduced to functions which require a central database, such as, for example, call routing, processing of billing information, and on the coordination of certain features that can be distributed across several clients (eg Centrex).
- the network-central control device is therefore also referred to below as a feature and route control proxy (see Figure 3).
- the intelligent access gateway also carries out the termination of the signaling (subscriber line signaling and connection line signaling) and carries out the user channel control as before.
- the subscriber data are advantageously stored and managed in the Intelligent Access Gateway.
- the invention solves all three problem areas already mentioned equally.
- connection control signal all user channel settings directly in the intelligent access gateway via an internal interface between the connection and user channel control.
- Signaling messages can be sent without delay and the required resources can be requested immediately. This means there are no time-critical delays.
- the number of messages relating to feature control is smaller and not comparable in terms of time. The same applies to call routing. 3.2 Problem of restricted network availability
- the gateway is able to perform at least a limited connection control for all existing subscriber connections without having to communicate with the feature and route proxy if an alternative route proxy is in the Network is available, which does not have to have any knowledge of existing participants.
- the local establishment of a fixed route for emergency operation enables calls to connected emergency call centers without an existing route proxy.
- the necessary charging data is recorded immediately and precisely in the intelligent access gateway, since both the time stamp and the switching of the user channel are carried out in the intelligent access gateway without delays occurring via an external transport network.
- connection-related data are then sent either directly or via the feature and route proxy to a higher-level postprocessing system.
- the NGN structure according to the invention is created by adopting elements of the traditional functional approach of the combined user channel and connection control.
- the elements of the traditional function control allow precise control All time-critical processes of connection and user channel control, while maintaining the approach of a central call server for controlling access gateways.
- the possibility of using a large central call server, which can be locally separated from the access gateways distributed in the network, is greatly favored with this architecture, since runtime delays in the transport network are no longer a dimensioning criterion.
- IAGW intelligent access gateway
- the Intelligent Access Gateway hiA 7600 is controlled by the Feature and Route Control Proxy hiQ 9200.
- the messages are exchanged between the MGC and the MG using a proprietary Access Gateway Control protocol, since the standardized MGCP and H.248 protocols have not been standardized for the intended function split and are used purely for the control of the service channel. In future versions, however, the SIP protocol can also be used as the client proxy protocol.
- FIG. 5 shows a comparison of the architectures with the conventional NGN approach and the approach. he hiA 7600 realizes:
- FIG. 5 clearly shows how in the new NGN approach the call control function is shifted to the media gateway and the external H.248 / MGCP interface becomes an internal system interface with all the associated advantages, which are described in the above chapters have been described.
- a call control processor which controls and executes the IP-TDM mediation.
- the call control processor simultaneously contains the control software for the basic connection and the user channel control.
- the access control protocol is used to exchange messages with the HiQ 9200 feature and route control proxy, which carries out the routing and feature handling.
- control proxy controls all actions that have to be carried out for additional feature control proxies for feature handling or the communication between two control proxies for handling the call if the connections are assigned to different control proxies (for routing, each hiA 7600 with its connections is assigned to a controller via which it can be reached and who has knowledge of the assignment status).
- Figure 6 shows the network image for such a basic call, in which both connections are assigned to the control proxy.
- FIG 7 shows the flow of signaling messages associated with Figure 6 for the basic call mentioned.
- - Proxy variant b Only feature and routing-related requests are sent from an intelligent access gateway (client) to the proxy. The rest of the communication for connection control runs directly between the clients involved.
- the proxy variant a is used. All signaling messages - including those that could be exchanged directly between the access gateways - therefore run via the proxy, but are not processed on the proxy (see Figure 7).
- the subscriber signaling (MFC, DSSl, etc) is terminated at the Intelligent Access Gateway.
- the one for performing Digit processing and routing, as well as information required for feature handling, are sent to the proxy via the proxy client protocol, in the case of the hiA 7600 via ACP.
- MTP and SCCP are not processed by the Intelligent Access Gateway.
- Only the higher SS7 user parts (e.g. ISUP) are processed on the Intelligent Access Gateway.
- processing the lower layers of the SS7 protocol is the task of the signaling gateway integrated in the HiQ 9200 control proxy.
- Figure 8 shows the network image for such a basic call, in which only the input-side access is controlled by the control proxy.
- Figure 9 shows the signaling flow associated with Figure 8.
- the connection on the output side can be controlled by another control proxy, but also by a media gateway controller. Communication between the controllers takes place using BICC, as shown here, or SIP-T.
- control proxy contains the functionality of the interworking and supports two standardized network network interface protocols by means of BICC and SIP-T, the different NGN architectures for the access control can work together within a network.
- the approach of an intelligent access gateway corresponds to the division of functions pursued by SIP and thus enables the integration of the access gateway into the SIP world.
- the Ac The cess control protocol is replaced by the standardized SIP protocol (see Figure 10).
- a session to a SIP proxy is established using SIP signaling.
- the SIP proxy provides the information needed to locate the B subscriber.
- Participant depends on the supported features within the SIP domain.
- FIG 11 shows the flow of messages between clients and proxy using SIP.
- PSTN public switched telephone network
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Telephonic Communication Services (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03766151A EP1525756A1 (de) | 2002-07-29 | 2003-07-10 | Media gateway zur bereitstellung der pstn/isdn dienste in netzwerken der nächsten generation |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02017090 | 2002-07-29 | ||
EP02017090A EP1387589A1 (de) | 2002-07-29 | 2002-07-29 | Media Gateway zur Bereitstellung der PSTN/ISDN Dienste in Netzwerken der nächsten Generation |
EP03766151A EP1525756A1 (de) | 2002-07-29 | 2003-07-10 | Media gateway zur bereitstellung der pstn/isdn dienste in netzwerken der nächsten generation |
PCT/EP2003/007520 WO2004014087A1 (de) | 2002-07-29 | 2003-07-10 | Media gateway zur bereitstellung der pstn/isdn dienste in netzwerken der nächsten generation |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1525756A1 true EP1525756A1 (de) | 2005-04-27 |
Family
ID=30011103
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02017090A Withdrawn EP1387589A1 (de) | 2002-07-29 | 2002-07-29 | Media Gateway zur Bereitstellung der PSTN/ISDN Dienste in Netzwerken der nächsten Generation |
EP03766151A Withdrawn EP1525756A1 (de) | 2002-07-29 | 2003-07-10 | Media gateway zur bereitstellung der pstn/isdn dienste in netzwerken der nächsten generation |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02017090A Withdrawn EP1387589A1 (de) | 2002-07-29 | 2002-07-29 | Media Gateway zur Bereitstellung der PSTN/ISDN Dienste in Netzwerken der nächsten Generation |
Country Status (8)
Country | Link |
---|---|
US (1) | US20060031535A1 (de) |
EP (2) | EP1387589A1 (de) |
JP (1) | JP2006500799A (de) |
CN (1) | CN1672433A (de) |
AU (1) | AU2003246681A1 (de) |
BR (1) | BR0313465A (de) |
RU (1) | RU2326503C2 (de) |
WO (1) | WO2004014087A1 (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7218723B2 (en) * | 2003-10-14 | 2007-05-15 | Tellabs Petaluma, Inc. | Next-generation network that reduces the effect of a service failure |
CN1867010A (zh) * | 2005-05-21 | 2006-11-22 | 华为技术有限公司 | 下一代网络中大容量isdn接入系统及其方法 |
EP1796312A4 (de) * | 2005-06-13 | 2008-02-13 | Huawei Tech Co Ltd | Edge/packet-gateway-steuerungssystem und verfahren zur erreichung der steuerung durch das edge/packet-gateway |
CN100499582C (zh) * | 2005-10-14 | 2009-06-10 | 华为技术有限公司 | 一种数据传输方法及系统 |
US8837704B2 (en) * | 2006-08-31 | 2014-09-16 | Microsoft Corporation | Client controlled dynamic call forwarding |
CA2872131C (en) * | 2009-04-17 | 2017-01-10 | Nec Corporation | Mobile communication system, base station, gateway apparatus, core network apparatus and communication method |
CN101707765B (zh) * | 2009-09-16 | 2011-12-21 | 深圳市震有科技有限公司 | 一种在v5与媒体网关控制协议转换中传递主叫号码的方法 |
CN102025686B (zh) * | 2009-09-22 | 2014-06-11 | 中兴通讯股份有限公司 | 接入网关控制功能用户呼叫转接业务的实现方法及系统 |
CN101998001B (zh) * | 2010-09-25 | 2014-03-12 | 中兴通讯股份有限公司 | 一种基于软交换实现话务批发的系统及方法 |
CN103828414B (zh) * | 2011-07-20 | 2017-11-17 | 维萨国际服务协会 | 安全网关通信 |
US8676210B2 (en) * | 2012-03-06 | 2014-03-18 | Alcatel Lucent | Handling of event trigger registrations on BBERF during hand-over |
CN108462529B (zh) * | 2018-04-27 | 2023-12-19 | 上海欣诺通信技术股份有限公司 | 主备板卡切换方法、光传送网络设备及存储介质 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10003272A1 (de) * | 2000-01-26 | 2001-08-09 | Siemens Ag | Verfahren zur Anbindung von Einheiten mit genormten Schnittstellen an Einrichtungen eines Vermittlungssystems |
US7113581B2 (en) * | 2000-04-21 | 2006-09-26 | Tekelec | Methods and systems for providing dynamic routing key registration |
US7826384B2 (en) * | 2000-05-04 | 2010-11-02 | Nortel Networks Limited | Method and apparatus for negotiating bearer control parameters using property sets |
US20020188713A1 (en) * | 2001-03-28 | 2002-12-12 | Jack Bloch | Distributed architecture for a telecommunications system |
EP1309165A1 (de) * | 2001-10-22 | 2003-05-07 | Siemens Aktiengesellschaft | Verfahren zum Umschalten zwischen einer Sprachübermittlung und einer Faxübermittlung, Vorrichtung und Computerprogrammprodukt |
US6909776B2 (en) * | 2001-12-19 | 2005-06-21 | Bellsouth Intellectual Property Corporation | Systems and methods for monitoring network-based voice messaging systems |
JP3746713B2 (ja) * | 2001-12-28 | 2006-02-15 | 株式会社日立製作所 | インターネット電話システムおよび情報処理装置 |
US8037196B2 (en) * | 2002-06-26 | 2011-10-11 | Alcatel Lucent | Method for maintaining communication between communication devices having inconsistent protocols |
-
2002
- 2002-07-29 EP EP02017090A patent/EP1387589A1/de not_active Withdrawn
-
2003
- 2003-07-10 BR BR0313465-2A patent/BR0313465A/pt not_active IP Right Cessation
- 2003-07-10 WO PCT/EP2003/007520 patent/WO2004014087A1/de active Application Filing
- 2003-07-10 CN CNA038182149A patent/CN1672433A/zh active Pending
- 2003-07-10 US US10/523,199 patent/US20060031535A1/en not_active Abandoned
- 2003-07-10 JP JP2004525179A patent/JP2006500799A/ja active Pending
- 2003-07-10 RU RU2005105298/09A patent/RU2326503C2/ru not_active IP Right Cessation
- 2003-07-10 EP EP03766151A patent/EP1525756A1/de not_active Withdrawn
- 2003-07-10 AU AU2003246681A patent/AU2003246681A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO2004014087A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2004014087A1 (de) | 2004-02-12 |
RU2326503C2 (ru) | 2008-06-10 |
AU2003246681A1 (en) | 2004-02-23 |
BR0313465A (pt) | 2005-07-05 |
RU2005105298A (ru) | 2005-11-20 |
US20060031535A1 (en) | 2006-02-09 |
CN1672433A (zh) | 2005-09-21 |
EP1387589A1 (de) | 2004-02-04 |
JP2006500799A (ja) | 2006-01-05 |
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Owner name: NOKIA SIEMENS NETWORKS GMBH & CO. KG |
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