CN100382544C - Method for realizing transform of conventional telephone exchange network to younger generation network and transient network - Google Patents
Method for realizing transform of conventional telephone exchange network to younger generation network and transient network Download PDFInfo
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- CN100382544C CN100382544C CNB031576788A CN03157678A CN100382544C CN 100382544 C CN100382544 C CN 100382544C CN B031576788 A CNB031576788 A CN B031576788A CN 03157678 A CN03157678 A CN 03157678A CN 100382544 C CN100382544 C CN 100382544C
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Abstract
The present invention relates to a realization method for reforming a traditional public telephone switching network to the next-generation network and a transition network thereof. A gateway arranged under a soft switch replaces an exchange machine in a public switching telephone network (PSTN) network, a time division multiplexing (TDM) transmission network arranged between the original exchange machines is kept so as to enable control stream to be based on an IP network, and media stream is based on the TDM transmission network; the TDM transmission network of the media stream is switched into the IP network, and the transition from the PSTN network to the next-generation network (NGN) network is finally realized. The impact of the whole network structure is reduced by utilizing the present invention, the revolutionary network reformation process is changed into progressive step-by-step reformation, and the smooth change from the PSTN to the NGN can be realized, and thereby, the risk of the network reformation is reduced. The present invention overcomes the existing defects of difficult network reformation, wide relative aspect and large risk, and protects the benefit of operators to the maximum extent.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of network rebuilding implementation method and corresponding transition network from traditional PSTN (public switch telephone network) network to NGN (next generation network).
Background technology
Traditional PSTN (public switch telephone network) telephone network has been the viewpoint that industry is generally admitted to the NGN network transition based on the IP the Internet.Under the NGN framework, key-course separates with Access Layer, IP based network bearer service again, can expansion, aspect such as capacity, business all is improved.Had under the situation of considerable scale at present PSTN legacy network, how to have guaranteed in transition, can not bring influence, become the problem that comprises that operator, equipment supplier generally are concerned about business.
Be illustrated in figure 1 as traditional PSTN network structure, in traditional PSTN network,, finish (can think soft switch and gateway unification form afterwards) by telephone exchange to the control of calling and the carrying of Media Stream.The user is by based on the normal speech phone access switch of twisted-pair feeder, and it is interconnected to adopt TDM (time division multiplexing) circuit between the switch of different office points, provides carrying for interoffice signaling and interoffice Media Stream simultaneously.
Be illustrated in figure 2 as existing standard NGN network structure, under the NGN framework, the gateway of the soft switch of control aspect and access aspect is separated.Soft switch is by packet oriented protocol, and control gateway is finished the foundation of the continuing of calling, Media Stream (speech, video).Under standard N GN framework, the Media Stream between the gateway also is based on packet network, is different from carrying based on time division circuit under the traditional PSTN.
Traditional reforming mode from the PSTN network to the NGN network is that directly a plurality of user gateway or the Tandem Gateway of band substitute down with a soft switch (softswitch) a plurality of office points switch at present, between the gateway (MG) from original repeat circuit based on transmission system, change RTP (RTP) the flow transmission voice of IP based network into, the signaling flow IP based network between soft switch and the gateway transmits.
The major defect that existing net changes scheme is the initial stage that changes at net, just need change on a large scale whole transmission network, and will can move after setting up the more complete IP network that can ensure QOS (service quality).Whole net correct one's mistakes journey threshold height, involve a wide range of knowledge, bring greater risk to operator.
Summary of the invention
Technical problem to be solved by this invention is: the deficiency that overcome existing network rebuilding threshold height, involves a wide range of knowledge, has a big risk provides a kind of implementation method and transition network from PSTN to the NGN network rebuilding, thereby realizes the smooth evolution from PSTN to NGN.
The present invention solves the problems of the technologies described above the technical scheme that is adopted to be:
This traditional public switched telephone network (PSTN) may further comprise the steps to the implementation method of the network rebuilding of future generation:
With a soft switch down the gateway of band replace switch in public switch telephone network (PSTN) network, and keep the Time Division Multiplexing transmission network between original switch, make the signaling flow IP based network, and Media Stream is still based on the TDM transmission network;
TDM between this soft switch intradomain gateway connection is configured to intra-office intercommunication relaying, realizes speech channel route based on TDM between the intra-office gateway;
The TDM transmission network of Media Stream is switched to IP network.
Increase built-in resource veneer in the described gateway, load voice document and carry out built-in medium resource service, for user or the relaying that inserts provides playback, support collects the digits.
Corresponding a kind of traditional public switched telephone network (PSTN) is to the transition network of the network rebuilding of future generation, comprise soft switch and gateway, link to each other by the Time Division Multiplexing transmission network between described gateway, the connection of the TDM between the gateway is configured to intra-office intercommunication relaying, carry out the carrying of Media Stream; Link to each other by IP network between the gateway and between gateway and the soft switch, carry out the carrying of signaling flow.
The resource veneer is set in the described gateway, carries out built-in medium resource service, for user or the relaying that inserts provides playback, support collects the digits.
Beneficial effect of the present invention is: utilize the present invention, the PSTN network is in NGN evolution, keep existing TDM transmission network, soft switch increases speech channel routing management function between gateway, supports the interconnected gateway of TDM, media gateway increases built-in medium resource service function, in net is corrected one's mistakes journey, reduced impact like this, changed revolutionary transformation process into gradual progressively rectification whole network configuration, can realize the smooth evolution of PSTN, thereby reduce the risk of the network rebuilding to NGN.
The invention provides a kind of implementation method and corresponding transition network from PSTN to the NGN network rebuilding; can realize the smooth evolution from PSTN to NGN; the deficiency that overcome existing network rebuilding threshold height, involves a wide range of knowledge, has a big risk can farthest be protected operator's interests.
Description of drawings
Fig. 1 is traditional PSTN network structure;
Fig. 2 is existing standard NGN network structure;
Fig. 3 is the schematic network structure after the invention process network rebuilding.
Embodiment
With embodiment the present invention is described in further detail with reference to the accompanying drawings below:
When the network rebuilding of carrying out from PSTN to NGN, if disposable all TDM (time division multiplexing) transmission network is replaced with IP network, the impact meeting of transformation is bigger, and therefore the invention provides a kind of gradual net changes method, as shown in Figure 3.The TDM that has kept the carrying speech channel among the figure between all gateways connects, and call signaling send soft switch to handle then by up IP tunnel.Under this networking, can pass through data configuration, the connection of the TDM between this soft switch intradomain gateway is configured to intra-office intercommunication relaying, adopt similar tupe from ring, share existing transistroute mechanism, realize speech channel route based on TDM between the intra-office gateway.
1, at first on control flows, realize IPization, the switch in the gateway replacement PSTN network of being with down with a soft switch, and keep TDM transmission network between original switch; Signaling flow IP based network like this, and Media Stream is still based on the TDM transmission network.
2, progressively the TDM transmission network of Media Stream is switched to IP network then, finally realize transition, can drop to minimum to the impact that existing network is caused like this from the PSTN network to the NGN network.
Under this IP network and TDM network and the networking structure deposited, must support to connect by TDM between the own gateway of being managed as the soft switch of centralized traffic control.Can between any 2, connect different with the IP connection, by the interconnected gateway of TDM, circuit can not all connect between any two gateways, intermediate demand has individual tandem routing process, be non-complete interconnected form, so must be supported in the ability of route speech channel between the gateway in the soft switch.
TDM between this soft switch intradomain gateway connection is configured to intra-office intercommunication relaying, promptly the TDM between gateway is connected, be configured to the same with ISUP (ISUP) relaying of common striking out usefulness, but be on signaling from encircling, because this TDM has just connected two gateways of this intra-office, be not genuine out to another office direction.Like this from gateway A by TDM during to gateway B, just can use the mechanism of original relaying routing, choose a circuit, only corresponding soft switch, equal to have gone out once office from gateway A, and because signaling from ring,, so greatly simplified in the soft switch development amount interconnected between gateway so gone into again once innings from gateway B.TDM relaying between the gateway in the territory is configured to common relaying, but on the data configuration according to ring configuration certainly, realized interconnected based on TDM of intra-office.On soft switch service is handled, need corresponding call by variable type, service attribute, because this calling essence still is intra-office, can prevents Home Exchange Call like this and be used as striking out or long-distance service by mistake.
In addition, because there is not the speech channel of IP mode, Media Resource Server in the standard NGN networking (realize to the user playback, processing collects the digits) IP-based playback can't be provided, function collects the digits, therefore require the function that media gateway must built-in medium resource service, for user or the relaying that inserts provides playback, support collects the digits.Typical playback is for example: " user that you dial is just busy ", " user is just busy, please don't on-hook " or the like.The function that collects the digits is mainly used in the intelligent card numbers business, and for example when prompting input card number, speech channel will be connected on the Resource Server, the number that the user dials be resolved, and report soft switch.Gateway can load voice document and realize this function by increasing built-in resource veneer.
Utilize the present invention, the PSTN network is in NGN evolution, keep existing TDM transmission network, soft switch increases speech channel routing management function between gateway, supports the interconnected gateway of TDM, media gateway increases built-in medium resource service function, in net is corrected one's mistakes journey, reduced impact like this, changed revolutionary transformation process into gradual progressively rectification whole network configuration, can realize the smooth evolution of PSTN, thereby reduce the risk of the network rebuilding to NGN.
Claims (4)
1. a traditional public switched telephone network (PSTN) is characterized in that to the implementation method of the network rebuilding of future generation, may further comprise the steps:
With the switch in the gateway replacement public switch telephone network PSTN network of band under the soft switch, and keep time division multiplexing tdm transmission network between original switch, TDM between gateway connection is configured to intra-office intercommunication relaying, make the signaling flow IP based network, and Media Stream is still based on the TDM transmission network;
The TDM transmission network of Media Stream is switched to IP network.
2. traditional public switched telephone network (PSTN) according to claim 1 is to the implementation method of the network rebuilding of future generation, it is characterized in that: increase built-in resource veneer in the described gateway, load voice document and carry out built-in medium resource service, for user or the relaying that inserts provides playback, support collects the digits.
3. a traditional public switched telephone network (PSTN) is to the transition network of the network rebuilding of future generation, comprise soft switch and gateway, it is characterized in that: link to each other by the time division multiplexing tdm transmission network between described gateway, the connection of the TDM between the gateway is configured to intra-office intercommunication relaying, carry out the carrying of Media Stream; Link to each other by IP network between the gateway and between gateway and the soft switch, carry out the carrying of signaling flow.
4. traditional public switched telephone network (PSTN) according to claim 3 is to the transition network of the network rebuilding of future generation, it is characterized in that: the resource veneer is set in the described gateway, carry out built-in medium resource service, for user or the relaying that inserts provides playback, support collects the digits.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB031576788A CN100382544C (en) | 2003-09-05 | 2003-09-05 | Method for realizing transform of conventional telephone exchange network to younger generation network and transient network |
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| CNB031576788A CN100382544C (en) | 2003-09-05 | 2003-09-05 | Method for realizing transform of conventional telephone exchange network to younger generation network and transient network |
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| CN1592281A CN1592281A (en) | 2005-03-09 |
| CN100382544C true CN100382544C (en) | 2008-04-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI508496B (en) * | 2012-11-13 | 2015-11-11 | PSTN users multi-stage access to NGN users of the method and system | |
| US10341253B2 (en) | 2016-09-19 | 2019-07-02 | Accenture Global Solutions Limited | Automatic consolidation of network resources |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100362830C (en) * | 2005-04-15 | 2008-01-16 | 华为技术有限公司 | Group network intercommunicating method and network system thereof |
| CN100428746C (en) * | 2005-12-20 | 2008-10-22 | 华为技术有限公司 | Media gateway and next generation network communication system using the same |
| CN100479392C (en) * | 2005-12-31 | 2009-04-15 | 华为技术有限公司 | System and method for QOS quality detection in NGN network |
| CN101052021A (en) * | 2006-05-15 | 2007-10-10 | 华为技术有限公司 | NGN network based on PSTN network structure |
| CN100493038C (en) | 2006-05-26 | 2009-05-27 | 华为技术有限公司 | Method and system for alternating medium-flow during process of terminal talk |
| CN100563358C (en) | 2006-05-31 | 2009-11-25 | 华为技术有限公司 | A kind of system, Apparatus and method for of tackling mobile exchanging node fault |
| CN101184040B (en) * | 2007-12-06 | 2010-09-22 | 中兴通讯股份有限公司 | Router and method of implementing circuit simulation applying the router |
| CN102355742A (en) * | 2011-06-27 | 2012-02-15 | 中兴通讯股份有限公司 | Method, device and system for data transmission in mobile network |
| CN107493401A (en) * | 2016-06-12 | 2017-12-19 | 中兴通讯股份有限公司 | Line status processing method and processing device |
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|---|---|---|---|---|
| WO1998043392A1 (en) * | 1997-03-26 | 1998-10-01 | Primetech Electronics Inc. | Method and apparatus for interconnecting control networks with time division multiplexing link |
| EP1065862A2 (en) * | 1999-07-01 | 2001-01-03 | Nortel Networks Limited | Method and apparatus for performing internet protocol address resolutions in a telecommunications network |
| EP1311133A2 (en) * | 2001-11-02 | 2003-05-14 | Alcatel | Integrated gateway functionality in an access network element |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998043392A1 (en) * | 1997-03-26 | 1998-10-01 | Primetech Electronics Inc. | Method and apparatus for interconnecting control networks with time division multiplexing link |
| EP1065862A2 (en) * | 1999-07-01 | 2001-01-03 | Nortel Networks Limited | Method and apparatus for performing internet protocol address resolutions in a telecommunications network |
| EP1311133A2 (en) * | 2001-11-02 | 2003-05-14 | Alcatel | Integrated gateway functionality in an access network element |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI508496B (en) * | 2012-11-13 | 2015-11-11 | PSTN users multi-stage access to NGN users of the method and system | |
| US10341253B2 (en) | 2016-09-19 | 2019-07-02 | Accenture Global Solutions Limited | Automatic consolidation of network resources |
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| CN1592281A (en) | 2005-03-09 |
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