CN102316111B - The processing method of Media Stream, the monitor method of video call and video gateway - Google Patents
The processing method of Media Stream, the monitor method of video call and video gateway Download PDFInfo
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- CN102316111B CN102316111B CN201110275911.1A CN201110275911A CN102316111B CN 102316111 B CN102316111 B CN 102316111B CN 201110275911 A CN201110275911 A CN 201110275911A CN 102316111 B CN102316111 B CN 102316111B
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Abstract
The invention provides a kind of processing method of Media Stream, the monitor method of video call, Media Gateway Controller, video gateway and listening center, wherein, the processing method of Media Stream includes：After Media Gateway Controller (MGC) determines that the user of video call is monitored, the multiplexed format that listening center is supported is obtained；In the monitoring context that the media stream duplication of the user in the video call context that the MGC control video gateways (VIG) set up the VIG is set up to the VIG.Technical scheme, on the premise of listening center supports most basic demultiplexing function, need not increase extra equipment, utilize existing VIG multiplexed resource, it would be desirable to which the multiplexed format that the Media Stream of monitoring is supported by listening center is multiplexed, realize the monitoring to video call.
Description
Technical field
The present invention relates to the Lawful Interception field in communication, more particularly to a kind of processing method of Media Stream, video call
Monitor method, Media Gateway Controller, video gateway and listening center.
Background technology
Perfect, mobile terminal function enhancing and abundant, the various videos of video content with 3G network infrastructure
Our routine work and life of extreme enrichment also will be provided new profit growth point for mobile operator by value-added service.Not
Carry out the income and profit margin relative decrease of voice service, effectively improving every user's average income (ARPU) needs to carry out what is enriched
Differential competition business.Mobile video business has begun to worldwide send out rapidly as the main application of following 3G network
Exhibition, by next focus as mobile value-added service.
3G video gateways (VIG, Video Interactive Gateway) are 3G network and IMS (IP Multimedia
Subsystem, IP multimedia subsystem) gateway device between system, realize 3G terminal and SIP (Session Initiated
Protocol, session initiation protocol) network sip terminal between video interconnection；3G and SIP video interconnections networking such as Fig. 1 institutes
Show.
For visual telephone, apply relatively more extensive for H.324M agreement in 3G network.H.324 agreement is international telecommunication connection
Framework agreement is realized in the low rate multimedia terminal that alliance's telecommunication standards tissue (ITU-T) is proposed, the definition of its control section
In H.245 agreement, Media Stream multiplex protocol is defined in H.223 agreement.Third generation partner program (3GPP) is to H.324
Agreement has carried out part and has reduced and change, the application for making it be more suitable for mobile communication, and the terminal for meeting the 3GPP frameworks is claimed
Depending on voice coding and H.324 for 3G-324M terminals, by with failure tolerance, movable expanded terminal standard is constituted.3G-324M is whole
Hold protocol infrastructure as shown in Figure 2.
H.245 it is a multi-media communication control protocol based on packet multiplexing, mainly includes principal and subordinate's decision, ability and hand over
Change, the opening and closing of logic channel, phonetic image and data communication mode override requests, H.223 the transmission of multiplex table entries,
Flow control messages, generic command and instruction etc..
H.223 the effect of code stream multiplex agreement be by code stream multiplexs such as voice, image, data, controls together, formed single
One bit stream, and by single bit Traffic Decomposition into media code stream, in addition, it also carries out error detection.
For protection public safety and national security, country can with and also be necessary that legal authorization is entered to the communication for monitoring target
Row is monitored and monitored.Monitoring system of future generation, can set up the unified monitoring network for miscellaneous service network integrate monitoring,
The business network that can be serviced for it at present includes：Traditional PSTN (Public Switched Telephone Network,
PSTN), 2G mobile communications networks, 3G mobile communications networks, NGN (Next Generation Network,
Next generation network) etc..Most of listening center supports TDM (Time Division Multiplex, time division multiplexing) to connect
Mouthful, some listening centers support IP (Internet Protocol, Internet protocol) interface.
Present network monitoring is mostly audio monitoring, monitors, how to be monitored for the video call for being controlled number
Flow, realize it is all similar：MGC (Media Gateway Controller, Media Gateway Controller) and listening center
Interact, set up the media link monitored, MGW (Media Gateway, WMG) is responsible for the Media Stream by target is monitored
Listening center is sent to, as shown in Figure 3.
Video call realizes one of key of monitoring, is how video media stream to be sent into listening center.It is conventional at present
Video call monitor and have following three kinds of modes to the processing of Media Stream：
1) only voice flow is sent to listening center：For H324 terminals T324, will be sent out after the voice flow demultiplexing in multiplex stream
Give listening center；For sip terminal TSIP, voice flow is transmitted directly to listening center.Listening center only needs to support to language
Sound is monitored, but can not obtain the video information in video call.
2) multiplex stream comprising voice, video, data message is transmitted directly to listening center：For H324 terminals T324,
The multiplex stream received is transmitted directly to listening center；For sip terminal TSIP, by multiplex terminal TMUXMultiplex stream after multiplexing
It is sent to listening center.Because the multiplex mode that 3G terminal, VIG equipment are used varies, listening center needs to support all
Multiplex mode processing, to listening center demultiplex Capability Requirement it is very high.
3) after multiplex stream is demultiplexed, single voice flow, video flowing, data flow are sent respectively to listening center：It is right
In H324 terminals T324, by multiplex terminal TMUXData after demultiplexing are sent to listening center；For sip terminal TSIP, by SIP
Multi-stream data be transmitted directly to listening center.Listening center needs to support SIP multithreadings, solves voice and video and synchronously asks
Topic；The bandwidth of the video flowing of sip terminal can exceed 64Kbps, it is necessary to which listening center supports carrying bandwidth more than 64Kbps.
The content of the invention
The invention provides a kind of processing method of Media Stream, the monitor method of video call, Media Gateway Controller, regard
Gateway and listening center are interrogated, existing the problem of Capability Requirement is very high is demultiplexed to listening center to overcome.
The invention provides a kind of processing method of Media Stream, this method includes：
After Media Gateway Controller (MGC) determines that the user of video call is monitored, the multiplexing that listening center is supported is obtained
Form；
The matchmaker of the user in the video call context that the MGC control video gateways (VIG) set up the VIG
Body stream is copied in the monitoring context that the VIG is set up.
Preferably, the user includes 3G (Third Generation) Moblie (3G) terminal user and/or session initiation protocol (SIP) eventually
End subscriber.
Present invention also offers a kind of processing method of Media Stream, this method includes：
Video gateway (VIG) receives the multiplexing lattice that the notice and listening center of Media Gateway Controller (MGC) transmission are supported
Formula；
The VIG sets up video call context according to the notice and monitors context, above and below the video call
The media stream duplication of user in text to it is described monitoring context in, by the multiplexed format by it is described monitoring context in matchmaker
Body stream is multiplexed into multiplexed media stream；
The VIG reports the multiplexed media stream to the listening center.
Preferably, when the user is 3G (Third Generation) Moblie (3G) terminal user, the VIG is built according to the notice
Vertical video call context and monitoring context, by the media stream duplication of the user in the video call context to the prison
Listen in context, including：
The VIG sets up video call context according to the notice, and multiplexing is set up in the video call context
Terminal and first replicates terminal, and the multiplex terminal is established as unidirectionally to the topology of the described first duplication terminal；
The VIG is notified to set up monitoring context, is set up in the monitoring context and monitor conversation initial according to described
Agreement (SIP) terminal and monitoring multiplex terminal, and the topology of the monitoring sip terminal to the monitoring multiplex terminal is set up
To be unidirectional；
The VIG is replicated described first and carrying is set up between terminal and the monitoring sip terminal；
And/or
When the user is sip terminal user, the VIG sets up video call context and monitoring according to the notice
Context, by the media stream duplication of the user in the video call context into the monitoring context, including：
The VIG sets up video call context according to the notice, SIP is set up in the video call context whole
Terminal is replicated at end and second, and the sip terminal is established as unidirectionally to the topology of the described second duplication terminal；
The VIG according to it is described notify set up monitor context, it is described monitoring context in set up monitor sip terminal and
Multiplex terminal is monitored, and the topology of the monitoring sip terminal to the monitoring multiplex terminal is established as unidirectionally；
The VIG is replicated described second and carrying is set up between terminal and the monitoring sip terminal.
Preferably, the Media Stream in the monitoring context is multiplexed into multiplexed media by the VIG by the multiplexed format
Flow and be：
Media Stream in the monitoring context is multiplexed into multiplexing matchmaker by the multiplex terminal of monitoring by the multiplexed format
Body stream.
Preferably, methods described also includes：
The VIG sets up monitor terminal in the monitoring context, and the monitoring multiplex terminal is monitored eventually to described
The topology at end is established as unidirectionally；
The VIG reports the multiplexed media stream to be to the listening center：
The monitor terminal reports the multiplexed media stream to the listening center.
Present invention also offers a kind of monitor method of video call, this method includes：
The multiplexed format that the VIG that listening center reception video gateway (VIG) is reported is supported according to the listening center
The multiplexed media stream being multiplexed into；
The listening center demultiplexes the multiplexed media stream by the multiplexed format oneself supported, completes to video call
Monitor.
Present invention also offers a kind of Media Gateway Controller (MGC), the MGC includes：
Module is obtained, after the user for determining video call is monitored, the multiplexed format that listening center is supported is obtained；
Control module, for controlling the use in the video call context that video gateway (VIG) sets up the VIG
In the monitoring context that the media stream duplication at family is set up to the VIG.
Present invention also offers a kind of video gateway (VIG), the VIG includes：
Receiving module, for receiving the multiplexing lattice that the notice and listening center of Media Gateway Controller (MGC) transmission are supported
Formula；
Multiplexing module is replicated, for setting up video call context according to the notice and monitoring context, is regarded described
The media stream duplication of user in frequency call context is into the monitoring context, by the multiplexed format by the monitoring
Media Stream hereinafter is multiplexed into multiplexed media stream；
Reporting module, for reporting the multiplexed media stream to the listening center.
Preferably, when the user is 3G (Third Generation) Moblie (3G) terminal user, the duplication Multiplexing module is to use
In：
Video call context is set up according to the notice, multiplex terminal and the are set up in the video call context
One replicates terminal, and the multiplex terminal is established as unidirectionally to the topology of the described first duplication terminal；
Notify to set up monitoring context according to described, sip terminal is monitored in foundation in the monitoring context and monitoring is multiple
It is established as unidirectionally to the topology for monitoring multiplex terminal with terminal, and by the monitoring sip terminal；
Replicated described first and carrying is set up between terminal and the monitoring sip terminal；
And/or
When the user is session initiation protocol (SIP) terminal user, the duplication Multiplexing module, is to be used for：
Video call context is set up according to the notice, sip terminal and the are set up in the video call context
Two replicate terminal, and the sip terminal is established as unidirectionally to the topology of the described second duplication terminal；
Notify to set up monitoring context according to described, sip terminal is monitored in foundation in the monitoring context and monitoring is multiple
It is established as unidirectionally to the topology for monitoring multiplex terminal with terminal, and by the monitoring sip terminal；
Replicated described second and carrying is set up between terminal and the monitoring sip terminal.
Present invention also offers a kind of listening center, the listening center includes：
Receiving module, for receiving the multiplexing that the VIG that video gateway (VIG) is reported is supported according to the listening center
The multiplexed media stream that form is multiplexed into；
Demultiplexing module, for demultiplexing the multiplexed media stream by the multiplexed format oneself supported, completion is exhaled video
The monitoring cried.
Embodiments of the invention, in the most basic demultiplexing function of listening center support, need not increase extra equipment
On the premise of, utilize existing VIG multiplexed resource, it would be desirable to which the multiplexed format that the Media Stream of monitoring is supported by listening center is entered
Row multiplexing, realizes the monitoring to video call.
Brief description of the drawings
Fig. 1 is existing 3G and SIP video interconnections networking schematic diagram；
Fig. 2 is existing 3G-H324M terminal protocols Organization Chart；
Fig. 3 is that existing video call monitors general-purpose system structural representation；
Fig. 4 to the 3G-H324M terminals in video call monitor the system structure diagram of embodiment for the present invention；
Fig. 5 is the flow chart of monitoring 3G-H324M terminals in the embodiment of the present invention；
Fig. 6 to the sip terminal in video call monitor the system structure diagram of embodiment for the present invention；
Fig. 7 is the present invention to system knot of the 3G-H324M terminals and sip terminal in video call while listening for embodiment
Structure schematic diagram.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, below in conjunction with accompanying drawing to the present invention
Embodiment be described in detail.It should be noted that in the case where not conflicting, in the embodiment and embodiment in the application
Feature can mutually be combined.
The embodiments of the invention provide a kind of monitor method of video call, this method is from Media Gateway Controller, video signal
The angle of gateway and listening center is described, and the monitor method comprises the following steps：
Step 1: after MGC determines that the user of video call is monitored, obtaining the multiplexed format that listening center is supported；Control
The media stream duplication of the user in the video call context that video gateway (VIG) sets up the VIG is built to the VIG
In vertical monitoring context；
When MGC has found that the user of video call is monitored, while notifying VIG to set up video call context, notify
VIG, which is set up, monitors context, monitors context and is connected with call context and listening center media；MGC is regarded by topology control
Frequency call context and the Media Stream monitored in context are flowed to；
Above-mentioned user can be with 3G (Third Generation) Moblie (3G) terminal user, or session initiation protocol (SIP) terminal
User；
Step 2: VIG receives the multiplexed format that the notice and listening center of MGC transmissions are supported；Notify to set up according to described
Video call context and monitoring context, the media stream duplication of the user in the video call context is monitored to described
In context, the Media Stream in the monitoring context is multiplexed into multiplexed media stream by the multiplexed format；Monitored to described
Center reports the multiplexed media stream；
The user media stream of video call context is copied in monitoring context, monitored according to MGC requirement by VIG
Many streaming media flows are multiplexed into multiplexed media stream by context application VIG multiplexing equipments, the multiplexed format supported by listening center,
Report listening center；
Step 3: the VIG that listening center reception video gateway (VIG) is reported is according to answering that the listening center is supported
The multiplexed media stream being multiplexed into form, and the multiplexed media stream is demultiplexed by the multiplexed format oneself supported, complete to regarding
The monitoring of frequency calling.
Listening center and MGC interactions, by the multiplexed format of listening center, are carried out to the multiplexed media stream received from VIG
Demultiplexing, it is achieved thereby that the monitoring called user video.
Above method embodiment, in the most basic demultiplexing function of listening center support, need not increase extra equipment
On the premise of, utilize existing VIG multiplexed resource, it would be desirable to which the multiplexed format that the Media Stream of monitoring is supported by listening center is entered
Row multiplexing, realizes the monitoring to video call.
It should be noted that three steps in above-described embodiment are entered from the angle of MGC, VIG and listening center respectively
Row description, these three steps are exactly the behaviour that MGC, VIG and listening center are carried out in the snoop procedure to video call is realized
Make, no longer individually these three steps are repeated herein.
The embodiments of the invention provide a kind of Media Gateway Controller (MGC), the MGC includes obtaining module and control mould
Block, wherein：
Module is obtained, after the user for determining video call is monitored, the multiplexed format that listening center is supported is obtained；
Control module, for controlling the use in the video call context that video gateway (VIG) sets up the VIG
In the monitoring context that the media stream duplication at family is set up to the VIG.
The MGC with listening center and VIG by interacting, to realize that monitoring users video call is laid a good foundation.
The embodiment of the present invention additionally provides a kind of video gateway (VIG), and the VIG includes receiving module, replicates Multiplexing module
And reporting module, wherein：
Receiving module, for receiving the multiplexing lattice that the notice and listening center of Media Gateway Controller (MGC) transmission are supported
Formula；
Multiplexing module is replicated, for setting up video call context according to the notice and monitoring context, is regarded described
The media stream duplication of user in frequency call context is into the monitoring context, by the multiplexed format by the monitoring
Media Stream hereinafter is multiplexed into multiplexed media stream；
Reporting module, for reporting the multiplexed media stream to the listening center.
Wherein, when the user is 3G (Third Generation) Moblie (3G) terminal user, the duplication Multiplexing module is to use
In：Video call context is set up according to the notice, multiplex terminal and first is set up in the video call context and is answered
Terminal processed, and the multiplex terminal is established as unidirectionally to the topology of the described first duplication terminal；Notify to set up according to described
Context is monitored, is set up in the monitoring context and is monitored sip terminal and monitor multiplex terminal, and by the monitoring SIP
Terminal is established as unidirectionally to the topology of the monitoring multiplex terminal；Described first replicate terminal and the monitoring sip terminal it
Between set up carrying；And/or, when the user is session initiation protocol (SIP) terminal user, the duplication Multiplexing module is
For：Video call context is set up according to the notice, sip terminal and second is set up in the video call context and is answered
Terminal processed, and the sip terminal is established as unidirectionally to the topology of the described second duplication terminal；Notify to set up prison according to described
Context is listened, is set up in the monitoring context and is monitored sip terminal and monitor multiplex terminal, and the monitoring SIP is whole
The topology of the monitoring multiplex terminal is held to be established as unidirectionally；Replicated described second between terminal and the monitoring sip terminal
Set up carrying.
Above-mentioned VIG, by being interacted with MGC, the multiplexed media stream that the multiplexed format supported by listening center is multiplexed is reported
It is that listening center realizes that monitoring is laid a good foundation to listening center.
The embodiment of the present invention additionally provides a kind of listening center, and the listening center includes receiving module and demultiplexing module,
Wherein：
Receiving module, for receiving the multiplexing that the VIG that video gateway (VIG) is reported is supported according to the listening center
The multiplexed media stream that form is multiplexed into；
Demultiplexing module, for demultiplexing the multiplexed media stream by the multiplexed format oneself supported, completion is exhaled video
The monitoring cried.
Above-mentioned listening center receives the multiplexed media stream for the multiplexed format multiplexing supported by listening center that VIG is reported, and
Multiplexed media stream is demultiplexed, so as to realize the monitoring to video call.
As shown in figure 4, to the 3G-H324M terminals in video call monitor the system architecture of embodiment for the present invention
Schematic diagram, the system includes Media Gateway Controller 401, video gateway 402 and listening center 403, wherein, media gateway controlling
The structure of device 401 is identical with the structure of above-mentioned MGC embodiments, the structure phase of the structure of video gateway 402 and above-mentioned VIG embodiments
Together, the structure of listening center 403 is identical with the structure of above-mentioned listening center embodiment, and here is omitted.
Based on the system shown in Fig. 4, the process monitored the video call of user is as shown in figure 5, the process includes
Following steps：
When step 501, controlled user carry out video call, MGC is when setting up calling, according in Subscriber Number, and monitoring
The heart is interacted, and confirmation needs the calling to user to monitor, and obtains the multiplexed format of listening center；
While step 502, MGC notify that VIG sets up video call context and calling terminal, notify VIG is set up to monitor
Context, sets up monitor terminal TMonitor, monitor multiplex terminal TM-MuxWith monitoring sip terminal TM-SIP, concrete structure schematic diagram ginseng
See Fig. 4；
Step 503, MGC notify VIG to set up the first duplication terminal T in call context324-SIP, control multiplex terminal to arrive
First topology for replicating terminal is unidirectional (ONEWAY), and the topology to other-end is ISOLATE, it is ensured that first replicates terminal
The normal call of monitoring users is not influenceed；
The topology of terminal in MGC control video call contexts, is in order to ensure the flow direction of Media Stream, for example, control is multiple
It is unidirectional (ONEWAY) with terminal to first topology for replicating terminal, exactly in order to ensure Media Stream from multiplex terminal TMuxArrive
First replicates terminal T324-SIP；
Step 504, MGC control VIG replicate terminal T by the first of call context324-SIPWith the monitoring for monitoring context
Sip terminal TM-SIPBetween carrying set up：By TM-SIPThe media information of terminal is used as T324-SIPThe distant end media letter of terminal
Breath, T324-SIPThe media information of terminal is used as TM-SIPThe distant end media information of terminal.The Media Stream T of 3G-H324 terminals324, flow through
Multiplex terminal TMUXAfter demultiplexing, the multi-stream informations such as voice, video, control are formed, by monitoring sip terminal TM-SIPIt is multiple with first
Terminal T processed324-SIP, by monitoring multiplex terminal T in context is monitoredM-MuxAfter the multiplexed format multiplexing supported by listening center,
By monitor terminal TMonitorMedia Stream is reported into listening center；
Step 505, listening center press the multiplexed format of oneself, and the Media Stream that demultiplexing VIG is reported obtains intercepted user
The information such as voice flow, video flowing, data flow, so as to realize the monitoring of video call.
As shown in fig. 6, illustrating for the system architecture that the present invention monitor embodiment to the sip terminal in video call
Figure, the system includes Media Gateway Controller 601, video gateway 602 and listening center 603；Wherein, Media Gateway Controller
601 structure is identical with the structure of above-mentioned MGC embodiments, the structure phase of the structure of video gateway 602 and above-mentioned VIG embodiments
Together, the structure of listening center 603 is identical with the structure of above-mentioned listening center embodiment, and here is omitted.
Based on the system shown in Fig. 6, the process monitored the video call of user is similar to process shown in Fig. 5, area
It is not the second duplication terminal by sip terminal TSIPMedia stream duplication to context is monitored, and then be reported to listening center；I.e.
It is different from above-mentioned steps 503, it is control sip terminal T in the present embodimentSIPTerminal T is replicated to secondSIP-SIPTopology be
ONEWAY, concrete structure schematic diagram is referring to Fig. 6.
System shown in Fig. 7 includes Media Gateway Controller 701, video gateway 702 and listening center 703, wherein, media
The structure of gateway controller 701 is identical with the structure of above-mentioned MGC embodiments, the structure of video gateway 702 and above-mentioned VIG embodiments
Structure it is identical, the structure of listening center 703 is identical with the structure of above-mentioned listening center embodiment；The system can be while listening for
3G-H324M terminals and sip terminal, VIG set up two in video call context and replicate terminal T324-SIPAnd TSIP-SIP, respectively
By 3G-H324M terminals T324With sip terminal TSIPMedia stream duplication to monitor context, be then passed to listening center, specific mistake
Journey can be found in Fig. 5, and here is omitted.
Said system, in the most basic demultiplexing function of listening center support, need not increase the premise of extra equipment
Under, utilize existing VIG multiplexed resource, it would be desirable to which the multiplexed format that the Media Stream of monitoring is supported by listening center is answered
With realizing the monitoring to video call.
Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general
Computing device realize that they can be concentrated on single computing device, or be distributed in multiple computing devices and constituted
Network on, alternatively, the program code that they can be can perform with computing device be realized, it is thus possible to they are stored
Performed in the storage device by computing device, and in some cases, can be shown to be performed different from order herein
The step of going out or describe, they are either fabricated to each integrated circuit modules respectively or by multiple modules in them or
Step is fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hardware and software combination.
The above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, reference only to preferred embodiment to this hair
It is bright to be described in detail.It will be understood by those within the art that, technical scheme can be modified
Or equivalent substitution, without departing from the spirit and scope of technical solution of the present invention, the claim model in the present invention all should be covered
Among enclosing.
Claims (9)
1. a kind of processing method of Media Stream, this method includes：
After Media Gateway Controller (MGC) determines that the user of video call is monitored, the multiplexed format that listening center is supported is obtained；
The Media Stream of the user in the video call context that the MGC control video gateways (VIG) set up the VIG
Copy in the monitoring context that the VIG is set up；
Wherein, when the user is 3G (Third Generation) Moblie (3G) terminal user, the video that the VIG sets up the VIG
In the monitoring context that the media stream duplication of the user in call context is set up to the VIG, including：
The VIG sets up video call context, and multiplex terminal and first is set up in the video call context and is replicated eventually
End, and the multiplex terminal is established as unidirectionally to the topology of the described first duplication terminal；
The VIG, which is set up, monitors context, is set up in the monitoring context and monitors session initiation protocol (SIP) terminal and prison
Multiplex terminal is listened, and the topology of the monitoring sip terminal to the monitoring multiplex terminal is established as unidirectionally；
The VIG is replicated described first and carrying is set up between terminal and the monitoring sip terminal；
And/or
When the user is sip terminal user, the use in the video call context that the VIG sets up the VIG
In the monitoring context that the media stream duplication at family is set up to the VIG, including：
The VIG sets up video call context, and sip terminal and second is set up in the video call context and is replicated eventually
End, and the sip terminal is established as unidirectionally to the topology of the described second duplication terminal；
The VIG, which is set up, monitors context, is set up in the monitoring context and monitors sip terminal and monitor multiplex terminal, with
And be established as the topology of the monitoring sip terminal to the monitoring multiplex terminal unidirectionally；
The VIG is replicated described second and carrying is set up between terminal and the monitoring sip terminal.
2. according to the method described in claim 1, it is characterised in that：
The user includes 3G (Third Generation) Moblie (3G) terminal user and/or session initiation protocol (SIP) terminal user.
3. a kind of processing method of Media Stream, this method includes：
Video gateway (VIG) receives the multiplexed format that the notice and listening center of Media Gateway Controller (MGC) transmission are supported；
The VIG sets up video call context according to the notice and monitors context, by the video call context
User media stream duplication to it is described monitoring context in, by the multiplexed format by it is described monitoring context in Media Stream
It is multiplexed into multiplexed media stream；
The VIG reports the multiplexed media stream to the listening center；
Wherein, when the user is 3G (Third Generation) Moblie (3G) terminal user, the VIG sets up video according to the notice
Call context and monitoring context, above and below the media stream duplication of the user in the video call context to the monitoring
Wen Zhong, including：
The VIG sets up video call context according to the notice, and multiplex terminal is set up in the video call context
Terminal is replicated with first, and the multiplex terminal is established as unidirectionally to the topology of the described first duplication terminal；
The VIG is notified to set up monitoring context, is set up in the monitoring context and monitor session initiation protocol according to described
(SIP) terminal and monitoring multiplex terminal, and the topology of the monitoring sip terminal to the monitoring multiplex terminal is established as list
To；
The VIG is replicated described first and carrying is set up between terminal and the monitoring sip terminal；
And/or
When the user is sip terminal user, the VIG is set up above and below video call context and monitoring according to the notice
Text, by the media stream duplication of the user in the video call context into the monitoring context, including：
The VIG according to it is described notice set up video call context, set up in the video call context sip terminal and
Second replicates terminal, and the sip terminal is established as unidirectionally to the topology of the described second duplication terminal；
The VIG is notified to set up monitoring context, is set up in the monitoring context and monitor sip terminal and monitoring according to described
Multiplex terminal, and the topology of the monitoring sip terminal to the monitoring multiplex terminal is established as unidirectionally；
The VIG is replicated described second and carrying is set up between terminal and the monitoring sip terminal.
4. method according to claim 3, it is characterised in that：
Media Stream in the monitoring context is multiplexed into multiplexed media stream by the VIG by the multiplexed format：
Media Stream in the monitoring context is multiplexed into multiplexed media stream by the multiplex terminal of monitoring by the multiplexed format.
5. method according to claim 4, it is characterised in that methods described also includes：
The VIG sets up monitor terminal in the monitoring context, by the monitoring multiplex terminal to the monitor terminal
Topology is established as unidirectionally；
The VIG reports the multiplexed media stream to be to the listening center：
The monitor terminal reports the multiplexed media stream to the listening center.
6. a kind of monitor method of video call, this method includes：
The multiplexed format that the VIG that listening center reception video gateway (VIG) is reported is supported according to the listening center is multiplexed
Into multiplexed media stream；
The listening center demultiplexes the multiplexed media stream by the multiplexed format oneself supported, completes the prison to video call
Listen；
Wherein, the multiplexed format that the VIG is supported according to the listening center, which is multiplexed into multiplexed media stream, to be included：The VIG is built
Vertical video call context and monitoring context, by the media stream duplication of the user in the video call context to the prison
Listen in context, the Media Stream in the monitoring context is multiplexed into multiplexed media stream by the multiplexed format；
The VIG sets up video call context and monitors context, by the media of the user in the video call context
Stream is copied in the monitoring context, including：
The VIG sets up video call context, and multiplex terminal and first is set up in the video call context and is replicated eventually
End, and the multiplex terminal is established as unidirectionally to the topology of the described first duplication terminal；
The VIG, which is set up, monitors context, is set up in the monitoring context and monitors session initiation protocol (SIP) terminal and prison
Multiplex terminal is listened, and the topology of the monitoring sip terminal to the monitoring multiplex terminal is established as unidirectionally；
The VIG is replicated described first and carrying is set up between terminal and the monitoring sip terminal；
And/or
When the user is sip terminal user, the VIG sets up video call context and monitors context, is regarded described
The media stream duplication of user in frequency call context is monitored in context to described, including：
The VIG sets up video call context, and sip terminal and second is set up in the video call context and is replicated eventually
End, and the sip terminal is established as unidirectionally to the topology of the described second duplication terminal；
The VIG, which is set up, monitors context, is set up in the monitoring context and monitors sip terminal and monitor multiplex terminal, with
And be established as the topology of the monitoring sip terminal to the monitoring multiplex terminal unidirectionally；
The VIG is replicated described second and carrying is set up between terminal and the monitoring sip terminal.
7. a kind of Media Gateway Controller (MGC), the MGC includes：
Module is obtained, after the user for determining video call is monitored, the multiplexed format that listening center is supported is obtained；
Control module, for controlling the user's in the video call context that video gateway (VIG) sets up the VIG
In the monitoring context that media stream duplication is set up to the VIG；
Wherein, when the user is 3G (Third Generation) Moblie (3G) terminal user, the video that the VIG sets up the VIG
In the monitoring context that the media stream duplication of the user in call context is set up to the VIG, including：
The VIG sets up video call context, and multiplex terminal and first is set up in the video call context and is replicated eventually
End, and the multiplex terminal is established as unidirectionally to the topology of the described first duplication terminal；
The VIG, which is set up, monitors context, is set up in the monitoring context and monitors session initiation protocol (SIP) terminal and prison
Multiplex terminal is listened, and the topology of the monitoring sip terminal to the monitoring multiplex terminal is established as unidirectionally；
The VIG is replicated described first and carrying is set up between terminal and the monitoring sip terminal；
And/or
When the user is sip terminal user, the use in the video call context that the VIG sets up the VIG
In the monitoring context that the media stream duplication at family is set up to the VIG, including：
The VIG sets up video call context, and sip terminal and second is set up in the video call context and is replicated eventually
End, and the sip terminal is established as unidirectionally to the topology of the described second duplication terminal；
The VIG, which is set up, monitors context, is set up in the monitoring context and monitors sip terminal and monitor multiplex terminal, with
And be established as the topology of the monitoring sip terminal to the monitoring multiplex terminal unidirectionally；
The VIG is replicated described second and carrying is set up between terminal and the monitoring sip terminal.
8. a kind of video gateway (VIG), the VIG includes：
Receiving module, for receiving the multiplexed format that the notice and listening center of Media Gateway Controller (MGC) transmission are supported；
Multiplexing module is replicated, for setting up video call context according to the notice and monitoring context, the video is exhaled
The media stream duplication of user hereinafter is called into the monitoring context, by the multiplexed format by the monitoring context
In Media Stream be multiplexed into multiplexed media stream；
Reporting module, for reporting the multiplexed media stream to the listening center；
Wherein, when the user is 3G (Third Generation) Moblie (3G) terminal user, the duplication Multiplexing module, is to be used for：
Video call context is set up according to the notice, multiplex terminal and first is set up in the video call context and is answered
Terminal processed, and the multiplex terminal is established as unidirectionally to the topology of the described first duplication terminal；
Notify to set up monitoring context according to described, set up in the monitoring context and monitor sip terminal and monitoring multiplexing eventually
End, and the topology of the monitoring sip terminal to the monitoring multiplex terminal is established as unidirectionally；
Replicated described first and carrying is set up between terminal and the monitoring sip terminal；
And/or
When the user is session initiation protocol (SIP) terminal user, the duplication Multiplexing module, is to be used for：
Video call context is set up according to the notice, sip terminal and second is set up in the video call context and is answered
Terminal processed, and the sip terminal is established as unidirectionally to the topology of the described second duplication terminal；
Notify to set up monitoring context according to described, set up in the monitoring context and monitor sip terminal and monitoring multiplexing eventually
End, and the topology of the monitoring sip terminal to the monitoring multiplex terminal is established as unidirectionally；
Replicated described second and carrying is set up between terminal and the monitoring sip terminal.
9. a kind of listening center, the listening center includes：
Receiving module, for receiving the multiplexed format that the VIG that video gateway (VIG) is reported is supported according to the listening center
The multiplexed media stream being multiplexed into；
Demultiplexing module, for demultiplexing the multiplexed media stream by the multiplexed format oneself supported, is completed to video call
Monitor；
Wherein, the multiplexed format that the VIG is supported according to the listening center, which is multiplexed into multiplexed media stream, to be included：The VIG is built
Vertical video call context and monitoring context, by the media stream duplication of the user in the video call context to the prison
Listen in context, the Media Stream in the monitoring context is multiplexed into multiplexed media stream by the multiplexed format；
The VIG sets up video call context and monitors context, by the media of the user in the video call context
Stream is copied in the monitoring context, including：
The VIG sets up video call context, and multiplex terminal and first is set up in the video call context and is replicated eventually
End, and the multiplex terminal is established as unidirectionally to the topology of the described first duplication terminal；
The VIG, which is set up, monitors context, is set up in the monitoring context and monitors session initiation protocol (SIP) terminal and prison
Multiplex terminal is listened, and the topology of the monitoring sip terminal to the monitoring multiplex terminal is established as unidirectionally；
The VIG is replicated described first and carrying is set up between terminal and the monitoring sip terminal；
And/or
When the user is sip terminal user, the VIG sets up video call context and monitors context, is regarded described
The media stream duplication of user in frequency call context is monitored in context to described, including：
The VIG sets up video call context, and sip terminal and second is set up in the video call context and is replicated eventually
End, and the sip terminal is established as unidirectionally to the topology of the described second duplication terminal；
The VIG, which is set up, monitors context, is set up in the monitoring context and monitors sip terminal and monitor multiplex terminal, with
And be established as the topology of the monitoring sip terminal to the monitoring multiplex terminal unidirectionally；
The VIG is replicated described second and carrying is set up between terminal and the monitoring sip terminal.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1889469A (en) * | 2005-07-14 | 2007-01-03 | 华为技术有限公司 | Method and apparatus for monitoring video-calling |
| CN101370220A (en) * | 2007-08-16 | 2009-02-18 | 中兴通讯股份有限公司 | Video media monitoring method and system |
| CN101437249A (en) * | 2008-12-31 | 2009-05-20 | 华为技术有限公司 | Listen-in method for video call and application thereof |
| CN101557603A (en) * | 2009-05-15 | 2009-10-14 | 华为技术有限公司 | Method, device and system for lawful monitoring |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1889469A (en) * | 2005-07-14 | 2007-01-03 | 华为技术有限公司 | Method and apparatus for monitoring video-calling |
| CN101370220A (en) * | 2007-08-16 | 2009-02-18 | 中兴通讯股份有限公司 | Video media monitoring method and system |
| CN101437249A (en) * | 2008-12-31 | 2009-05-20 | 华为技术有限公司 | Listen-in method for video call and application thereof |
| CN101557603A (en) * | 2009-05-15 | 2009-10-14 | 华为技术有限公司 | Method, device and system for lawful monitoring |
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