CN101350742B - Method and system for implementing voice listen of next generation network - Google Patents
Method and system for implementing voice listen of next generation network Download PDFInfo
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- CN101350742B CN101350742B CN2007101301434A CN200710130143A CN101350742B CN 101350742 B CN101350742 B CN 101350742B CN 2007101301434 A CN2007101301434 A CN 2007101301434A CN 200710130143 A CN200710130143 A CN 200710130143A CN 101350742 B CN101350742 B CN 101350742B
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Abstract
The present invention discloses a method which can realize the voice monitoring of next-generation network, and a system thereof. The system comprises a media gateway, a media server, and a soft switching and monitoring center. The method comprises adopting the conference communication function provided by the media server to arrange the calling terminal, the called terminal and the monitoring terminal in the same conference. The method and the system save the investment costs of the equipment, adopt the digital delay monitoring channel of the circuit domain of the original public exchange telephone network, require no additional net element equipment which is used in the bypass of the IP media, and adopt the net element of the media server of the next-generation network. The H248 protocol needs no expansion; the calling topology of the calling party and the called party needs no correction; no special monitoring calling process is needed; the original equipment of the public exchange telephone network can be fully applied in the development of the public exchange telephone network towards the next-generation network; the method and the system improve the utilization efficiency of the equipment of the net element of the next-generation network, simplify the development process, and thus enhance the investment yield.
Description
Technical field
The present invention relates to NGN (Next Generation Network next generation network) field of network communication, in particular, is a kind of realization NGN voice-over-net monitor method and system.
Background technology
Lawful Interception is meant that law enforcement agency carries out according to state's laws, through the authorized organization approval, and the law enforcement behavior that public communication network communication traffic is monitored.
(public switch telephone network: Public Switched Telephone Network) in the network, monitor function is in circuit domain, is connected with stored-program control exchange by digital repeatered line and realizes at traditional PSTN.After the PSTN network is evolved to the NGN network, the NGN network generally by software change, network element such as media gateway, media server forms, NGN network with monitor function, generally need listening center and be connected with soft switch, the monitor function of NGN network generally is in the IP territory voice medium to be monitored.Generally be to increase special packet equipment in the prior art, network element as bypass IP Media Stream, perhaps increase the IP port that is used for the bypass Media Stream, need to expand the H248 agreement simultaneously, revise and call out topology, and formulate special monitored call flow process realizes the NGN network on IP network monitor function, implement more complicated, and can not make full use of the existing equipment of PSTN network, cause waste.
Summary of the invention
Technical problem to be solved by this invention provides the method and system that a kind of NGN of realization voice-over-net is monitored, after the PSTN net upgrades to the NGN network, use original MPTY resource and call flow, with regard to the method that can realize the calling and called user is monitored simultaneously.
For addressing the above problem, the invention provides a kind of method that realizes voice listen of next generation network, comprising: the conference call function of using media server to provide makes the calling and called terminal and monitors terminal to be in the same meeting.
Further, described method specifically comprises:
A, when terminal makes a call, if having one in calling terminal and the terminal called at least for by the terminal monitored, then execution in step b;
B, on media gateway, create first context comprise calling terminal and calling terminal IP medium end points; And establishment comprises second context of terminal called and terminal called IP medium end points;
On media server, create the 3rd context, wherein comprise and monitor terminal, an IP medium end points and the 2nd IP medium end points; Calling terminal IP medium end points is linked to each other with an IP medium end points, terminal called IP medium end points is linked to each other with the 2nd IP medium end points.
Further, the Media Stream direction of monitoring terminal is made as unidirectional debit's formula.
Further, also comprise behind the described step b: c, the calling of setting up the calling and called terminal room.
Further, among the described step a: judge whether have a terminal in the calling and called terminal at least for being monitored by soft switch.
Further, also comprise before the described step a: listening center is by monitoring the terminal that the soft switch of control signaling will be monitored.
Further, described step b specifically comprises:
First context that comprises calling terminal and calling terminal IP medium end points is created in b1, soft switch on media gateway; And establishment comprises second context of terminal called and terminal called IP medium end points;
The 3rd context is created in soft switch on media server, wherein comprise to monitor terminal, an IP medium end points and the 2nd IP medium end points;
B2, soft switch link to each other calling terminal IP medium end points by revising the Session Description Protocol descriptor of medium end points with an IP medium end points, terminal called IP medium end points is linked to each other with the 2nd IP medium end points.
Further, among the described step b1: soft switch is created first, second context by MGCP on media gateway.
Further, among the described step b1: soft switch is created the 3rd context by MGCP on media server.
The present invention also provides a kind of system that realizes voice listen of next generation network, comprising: media gateway, media server, soft switch; It is characterized in that, also comprise:
Listening center links to each other with media server, is used for receiving by the monitoring Media Stream from media server;
Described soft switch links to each other with media gateway and media server, is used for when terminal makes a call, and judges that whether having one in the calling and called terminal at least belongs to the terminal that will monitor; Comprise first context of calling terminal and calling terminal IP medium end points and comprise terminal called and second context of terminal called IP medium end points if having then on media gateway, create; And establishment comprises the 3rd context of monitoring terminal, an IP medium end points and the 2nd IP medium end points on media server; Also be used for calling terminal IP medium end points is linked to each other with an IP medium end points, terminal called IP medium end points is linked to each other with the 2nd IP medium end points.
Adopt the method for the invention and system, compared with prior art, save equipment investment cost, use the digital junction of the circuit domain of original PSTN net to monitor passage, need not increase the network element device that is used for the IP media bypass, use the media server network element in the NGN network to get final product; Need not expand the H248 agreement, need not revise the calling topology of calling and called, need not formulate special monitored call flow process, in the process of NGN evolution, make full use of the original equipment of PSTN network at PSTN, improve the equipment service efficiency of NGN network element, simplified development process, thereby improved investment return.
Description of drawings
Fig. 1 is the concrete implementing procedure figure that the present invention realizes the method that the NGN voice-over-net is monitored;
Fig. 2 is that the present invention realizes the concrete enforcement schematic diagram that each network element connects in the system that the NGN voice-over-net monitors;
Fig. 3 is a media channel connection layout in media gateway and the media server in the application example of the present invention.
Embodiment
Below in conjunction with drawings and Examples technical scheme of the present invention is described in detail.
The invention provides the method that a kind of NGN of realization voice-over-net is monitored, by the following technical solutions: listening center uses the digital junction in the original PSTN net to monitor passage to be connected with media server in the NGN network, media server is connected with media gateway by IP network, the conference call function of using media server to provide, make calling and called and monitor the three parts and be in the same meeting, the Media Stream direction of monitoring side is debit's formula, realizes the function that the calling and called both sides are monitored simultaneously.
Specific practice as shown in Figure 1, for:
A, listening center by monitor the soft switch of control signaling the terminal that will be monitored.
B, when terminal makes a call, have the terminal for being monitored, then an execution in step c in calling terminal and the terminal called at least if soft switch is judged.If the terminal that the calling and called terminal is not monitored then the flow process calling of setting up the calling and called terminal room routinely.
First context that comprises calling terminal and calling terminal IP medium end points is created in c, soft switch on media gateway by MGCP; And establishment comprises second context of terminal called and terminal called IP medium end points.
Soft switch is created the 3rd context by MGCP on media server, wherein comprise an IP medium end points and the 2nd IP medium end points; By revising SDP (SessionDescription Protocol, the Session Description Protocol) descriptor of medium end points, calling terminal IP medium end points is linked to each other with an IP medium end points, terminal called IP medium end points is linked to each other with the 2nd IP medium end points; Soft switch indication media server will be monitored terminal and add the 3rd context, and the Media Stream direction of this terminal is made as unidirectional debit's formula.Described monitoring terminal belongs to listening center.
To monitor terminal and first, second medium end points and be in the same context, and promptly allow them be in the same conferencing resource; The end points that is in the same context can hear each other that the three parts just can hear mutually like this.Default Media Stream direction is two-way, and the Media Stream direction of monitoring terminal is changed to a receipts pattern, even exactly in order to monitor the terminal speech, medium can not send out yet, other side also just can't hear the Media Stream of monitoring terminal in meeting like this, concerning the calling and called user, their sensation is just the same with common conversation so.
D, the calling of setting up the calling and called terminal room; Be the equal of that calling and called terminal and monitoring terminal are in the same meeting this moment.When conversing between calling and called, monitor terminal and just can receive the Media Stream of dealing between calling and called, thereby realize monitoring.
The system that the present invention also provides a kind of NGN of realization voice-over-net to monitor comprises: media gateway, media server, soft switch and listening center, as shown in Figure 2.
Described listening center links to each other with soft switch, be used for by monitor the soft switch of control signaling the terminal that will be monitored; Also connect media server, be used for receiving by the monitoring Media Stream from media server by the medium connected mode.
Described soft switch links to each other with media gateway and media server, is used for when terminal makes a call, and judges that whether having one in calling terminal and the terminal called at least belongs to the terminal of being monitored; If have then on media gateway, create first context that comprises calling terminal and calling terminal IP medium end points and comprise terminal called and second context of terminal called IP medium end points by MGCP; And on media server, create the 3rd context by MGCP, wherein comprise an IP medium end points and the 2nd IP medium end points; By revising the SDP descriptor of medium end points, calling terminal IP medium end points is linked to each other with an IP medium end points, terminal called IP medium end points is linked to each other with the 2nd IP medium end points, and the indication media server terminal that will be used to monitor adds the 3rd context, and the Media Stream direction of this terminal is made as unidirectional debit's formula.
Described media gateway, media server are consistent with prior art.
Further be illustrated with an application example of the present invention below.
Should be as shown in Figure 3 with the media channel annexation in media server in the example and the media gateway; Should be as follows with the concrete steps of example:
201, listening center is by monitoring the soft switch of control signaling, and terminal A is an intercepted user
202, user A makes a call, and the calling of being monitored the terminal initiation is judged in soft switch, creates the context C1 that comprises user A and IP medium terminal A IP1 on gateway.
203, the context C2 that comprises called subscriber B and medium terminal B IP1 is created in soft switch on gateway.
204, context M is created in soft switch on media server, comprises IP medium end points MIP1 and MIP2, and the SDP descriptor of medium end points is revised in soft switch, and AIP1 is connected with MIP1, and BIP1 is connected with MIP2.
205, soft switch indication media server adds context M to the terminal C that is used to monitor, and the Media Stream direction of C is changed to unidirectional debit's formula.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (9)
1. method that realizes voice listen of next generation network, it is characterized in that, comprise: listening center uses the digital junction monitoring passage of the circuit domain of original PSTN net to link to each other with media server, the conference call function of using media server to provide makes the calling and called terminal and monitors terminal to be in the same meeting; Specifically comprise:
A, when terminal makes a call, if having one in calling terminal and the terminal called at least for by the terminal monitored, then execution in step b;
B, on media gateway, create first context comprise calling terminal and calling terminal IP medium end points; And establishment comprises second context of terminal called and terminal called IP medium end points;
On media server, create the 3rd context, wherein comprise and monitor terminal, an IP medium end points and the 2nd IP medium end points; Calling terminal IP medium end points is linked to each other with an IP medium end points, terminal called IP medium end points is linked to each other with the 2nd IP medium end points.
2. the method for claim 1, it is characterized in that: the Media Stream direction that will monitor terminal is made as unidirectional debit's formula.
3. the method for claim 1 is characterized in that, also comprises behind the described step b:
C, the calling of setting up the calling and called terminal room.
4. the method for claim 1 is characterized in that, among the described step a: judge whether have a terminal for being monitored in the calling and called terminal at least by soft switch.
5. method as claimed in claim 4 is characterized in that, also comprises before the described step a: listening center is by monitoring the terminal that the soft switch of control signaling will be monitored.
6. method as claimed in claim 4 is characterized in that, described step b specifically comprises:
First context that comprises calling terminal and calling terminal IP medium end points is created in b1, soft switch on media gateway; And establishment comprises second context of terminal called and terminal called IP medium end points;
The 3rd context is created in soft switch on media server, wherein comprise to monitor terminal, an IP medium end points and the 2nd IP medium end points;
B2, soft switch link to each other calling terminal IP medium end points by revising the Session Description Protocol descriptor of medium end points with an IP medium end points, terminal called IP medium end points is linked to each other with the 2nd IP medium end points.
7. method as claimed in claim 6 is characterized in that, among the described step b1: soft switch is created first, second context by MGCP on media gateway.
8. method as claimed in claim 6 is characterized in that, among the described step b1: soft switch is created the 3rd context by MGCP on media server.
9. a system that realizes voice listen of next generation network comprises: media gateway, media server, soft switch; It is characterized in that, also comprise:
Listening center uses the digital junction monitoring passage in original PSTN net to link to each other with media server, is used for receiving by the monitoring Media Stream from media server;
Described soft switch links to each other with media gateway and media server, is used for when terminal makes a call, and judges that whether having one in the calling and called terminal at least belongs to the terminal that will monitor; Comprise first context of calling terminal and calling terminal IP medium end points and comprise terminal called and second context of terminal called IP medium end points if having then on media gateway, create; And establishment comprises the 3rd context of monitoring terminal, an IP medium end points and the 2nd IP medium end points on media server; Also be used for calling terminal IP medium end points is linked to each other with an IP medium end points, terminal called IP medium end points is linked to each other with the 2nd IP medium end points.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101301434A CN101350742B (en) | 2007-07-20 | 2007-07-20 | Method and system for implementing voice listen of next generation network |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101301434A CN101350742B (en) | 2007-07-20 | 2007-07-20 | Method and system for implementing voice listen of next generation network |
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| CN101350742A CN101350742A (en) | 2009-01-21 |
| CN101350742B true CN101350742B (en) | 2011-05-11 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102405662B (en) * | 2009-04-03 | 2014-06-11 | 华为技术有限公司 | Method, system and mobile switch center for legal listening |
| CN102185988B (en) * | 2011-05-18 | 2015-06-03 | 中兴通讯股份有限公司 | Method, system and media gateway for collecting voice data in real time |
| CN105828351B (en) * | 2015-01-06 | 2019-04-26 | 普天信息技术有限公司 | The method and system that a kind of pair of terminal or group are monitored |
| CN108650425B (en) * | 2018-05-15 | 2021-03-19 | 中国联合网络通信集团有限公司 | Monitoring method and monitoring system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1509015A (en) * | 2002-12-16 | 2004-06-30 | 华为技术有限公司 | System and method for realizing packet voice network monitoring |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1509015A (en) * | 2002-12-16 | 2004-06-30 | 华为技术有限公司 | System and method for realizing packet voice network monitoring |
Non-Patent Citations (2)
| Title |
|---|
| 宋方云 等.下一代网络(NGN)中软交换的监听系统设计与实现.《计算机与数字工程》.2007,第35卷(第2期),86-89,171. * |
| 葛琳 等.软交换网络合法侦听模型的设计.《计算机应用》.2006,第26卷(第12期),43-44. * |
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Effective date of registration: 20180716 Address after: California, USA Patentee after: Global innovation polymerization LLC Address before: 518057 Department of law, Zhongxing building, South hi tech Industrial Park, Nanshan District hi tech Industrial Park, Guangdong, Shenzhen Patentee before: ZTE Corp. |
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Granted publication date: 20110511 |