CN102523226A - Video session method and system - Google Patents
Video session method and system Download PDFInfo
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- CN102523226A CN102523226A CN201110436197XA CN201110436197A CN102523226A CN 102523226 A CN102523226 A CN 102523226A CN 201110436197X A CN201110436197X A CN 201110436197XA CN 201110436197 A CN201110436197 A CN 201110436197A CN 102523226 A CN102523226 A CN 102523226A
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Abstract
The invention discloses a video session method and a system. The video session method includes that a client transmits video call request to the far end through a call control server, the video call request comprises the far-end identity (ID) and the ID of a channel where the far end exists, the far end transmits video confirmation news to the client through the call control server after receiving the video call request, the video confirmation news comprises self video coder and decoder information and an access path, the client establishes video stream connection through the access path and the far end after receiving the video confirmation news, and the client, the call control server and the far end adopt the session initiation protocol (SIP) for communication. The technical scheme is that communication inside a system platform and outside real-time video communication control between platforms both utilize the SIP as the core communication protocol, so that the video session method and the system achieves unification of communication protocols, greatly improves platform expandability and improves system stability and reliability. Different monitoring platforms are communicated easily.
Description
Technical field
The art field that the present invention relates to communicate by letter in particular, relates to a kind of video session method and system based on SIP (Session Initiation Protocol, conversation initialized protocol) agreement.
Background technology
Video session is a kind of conversational mode that can realize carrying out simultaneously with many people video communication.Through the video session mode, can realize being in the aspectant speech of user of a plurality of different locations, because the advantage of video session makes and should technology in each field, be widely used.Along with the development of society, the application of video session more and more widely, and is also more and more stricter to the requirement of looking audio quality, shared, the flexible ease for use of collaboration data, ease of manageability simultaneously.
Early stage video conferencing system constitutes with the form of special hardware usually, comprises multipoint control unit MCU and video terminal, and will connect with private network each other.Can only be used for government, army, large-size enterprise group but the great number cost of hardware and private network has restricted the hardware video conference system, be difficult to medium-sized and small enterprises, day-to-day application popularization.
The present invention is in the process that realizes, the inventor finds:
The implementation of existing video session method is various; But after facing networking on a large scale; Prior art adopts various communications protocols to communicate between a plurality of equipment usually, is difficult to guarantee the unification of the agreement between each equipment, has brought limitation for the development of video system.
Summary of the invention
The purpose of this invention is to provide a kind of video session method and system, realized uniform communication protocol, the platform extensibility is strengthened, make the whole video conversational system stable more, reliable.
The objective of the invention is to realize through following technical scheme:
The present invention proposes a kind of video session method, this method comprises:
Client is sent the video call request through call control server to far-end; The ID that comprises said distal end I D and said far-end place passage in the said video call request;
Said far-end sends the video acknowledge message through said call control server to said client after receiving said video call request; The coding and decoding video information and the access path that comprise self in the said video acknowledge message;
Said client is set up video flowing through said access path with said far-end and is connected after receiving said video acknowledge message; Adopt Session Initiation Protocol to communicate between said client, call control server and the far-end.
Further, said method also comprises:
Said call control server is transmitted to center management server with said video call request and carries out authentication;
After said center management server confirms that said video call request is through authentication, notify said call control server that said video call request is sent to said far-end.
Further, said far-end sends the video acknowledge message through said call control server to said client after receiving said video call request, comprising:
The said video acknowledge message that said far-end will comprise the coding and decoding video information of self sends to said call control server;
Said call server is transmitted to center management server with said video acknowledge message;
Said center management server sends to said client with said video acknowledge message after in said video acknowledge message, adding the access path of said far-end.
Further, said client is set up video flowing through said access path with said far-end and is connected after receiving said video acknowledge message, comprising:
When said access path is directly pointed to said far-end, between said client and said far-end, directly set up video flowing and connect;
When said access path is when pointing to said far-end through said center management server, between said client and said center management server, and, set up video flowing between said center management server and the said far-end respectively and connect.
Further, said method also comprises:
When said client terminate was connected with the video flowing of said far-end, said client was sent to said far-end through said center management server and is stopped conversation message;
Said far-end stops to send video flowing to said client according to said termination conversation message.
Further, said method also comprises:
Belong under the application scenarios of the network equipment in the same area not at said client and said far-end, be connected with the center management server of said far-end region through the center management server of service managing server with said client region.
Further, said method comprises:
Said service managing server receives the video call request that said client is sent through the center management server of region, and said video call request is transmitted to the center management server of said far-end region;
The center management server of said far-end region receives said video call request, and said video call request is transmitted to said far-end;
Said far-end sends the video acknowledge message through the center management server of region to said service managing server, comprises coding/decoding information and the access path of self in the said video acknowledge message;
Said service managing server is transmitted to said video acknowledge message the center management server of said client region;
The center management server of said client region is transmitted to said client with said video acknowledge message;
Said client and said far-end are set up trans-regional video flowing and are connected through said video acknowledge message.
The invention allows for a kind of video session system, this system comprises:
Client is used for sending the video call request to far-end; The ID that comprises said distal end I D and said far-end place passage in the said video call request;
Far-end is used to receive the video call request that said client is sent, and sends the video acknowledge message to said client; The coding and decoding video information and the access path that comprise self in the said video acknowledge message;
Call control server is used to receive the said video call request that said client is sent, and said video call request is transmitted to said far-end; Also be used to receive the said video acknowledge message that said far-end sends to client, and said video acknowledge message is transmitted to said client, be connected so that said client is set up video flowing through said video acknowledge message with said far-end;
Adopt Session Initiation Protocol to communicate between said client, call control server and the far-end.
Preferably, said system also comprises:
Center management server; After call control server receives said video call request; Said video call request is transmitted to center management server; Be used for authentication is carried out in said video call request, after through checking, notify said call control server that said video call request is sent to said far-end;
After the said video acknowledge message that will comprise the coding and decoding video information of self at said far-end sends to said call control server; Said call server is transmitted to center management server with said video acknowledge message; Said center management server also is used for after said video acknowledge message is added the access path of said far-end, said video acknowledge message being sent to said client.
Preferably, said system also comprises:
Service managing server is used for belonging under the application scenarios of the network equipment of same area not at said client and said far-end, and the center management server of said client region is connected with the center management server of said far-end region;
Said service managing server specifically is used for:
Receive the video call request that said client is sent through the center management server of region; And said video call request is transmitted to the center management server of said far-end region, by the center management server of said far-end region said video call request is sent to said far-end;
Receive the video acknowledge message that said far-end sends through the center management server of region; The coding/decoding information and the access path that comprise self in the said video acknowledge message; And said video acknowledge message is transmitted to the center management server of said client region, by the center management server of said client region said video acknowledge message is transmitted to said client.Technical scheme by the invention described above provides can find out that it is a kind of that the embodiment of the invention provides.
The present invention has adopted Session Initiation Protocol to realize through the real-time video Control on Communication signaling between equipment; No matter be the system platform intercommunication; Still the outside real-time video Control on Communication between platform and the platform, all with Session Initiation Protocol as core communication protocol, not only realized uniform communication protocol; Simultaneously also make the platform extensibility strengthen greatly; Intercommunication is easier between the different monitoring platform and since Session Initiation Protocol self simple, convenient, superiority such as be suitable for, make whole system stable more, reliable.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skill in the art; Under the prerequisite of not paying creative work, can also obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 provides a kind of flow chart of video session method for the embodiment of the invention;
The structural representation of a kind of video session system that Fig. 2 provides for the embodiment of the invention;
The concrete structure sketch map of a kind of video session system that Fig. 3 provides for the embodiment of the invention;
The concrete structure sketch map of a kind of video session system that Fig. 4 provides for the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on embodiments of the invention, those of ordinary skills belong to protection scope of the present invention not making the every other embodiment that is obtained under the creative work prerequisite.
To combine accompanying drawing that the embodiment of the invention is done to describe in detail further below.
As shown in Figure 1, the embodiment of the invention has proposed a kind of video session method, and this method comprises:
100, client is sent the video call request through call control server to far-end; The ID that comprises said distal end I D and said far-end place passage in the said video call request, be used to demarcate the video source that will visit;
Specifically, distal end I D and far-end belong to the ID of passage in embodiments of the present invention, can obtain through following method:
The user who participates in video session obtains list of videos through client login video webpage, through the video data that program request needs, obtains the ID and the video channel ID of far-end.The user who participates in video session can login to video session system through client.
Client can provide the demonstration of video information, audio-frequency information, data message and warning information to the user who participates in video session in the embodiment of the invention; Simultaneously, according to the difference of client type, the part client also possesses carries out functions such as equipment control and user management to system.
In addition, call control server can be realized the access-in management to client, and the center management server that the video call request of sending to client is transmitted in the said client region is carried out call treatment.
101, said far-end sends the video acknowledge message through said call control server to said client after receiving said video call request; The coding and decoding video information and the access path that comprise self in the said video acknowledge message;
102, said client is set up video flowing through said access path with said far-end and is connected after receiving said video acknowledge message; Adopt Session Initiation Protocol to communicate between said client, call control server and the far-end.
Specifically; Far-end is used for gathering and providing video information in the embodiment of the invention; Realize the acquisition function of video information, audio-frequency information, data message and warning information; Two-way transmitting function with voice messaging and data message, segment distal also can be realized the memory function of audio frequency and video video recording in addition.
In the embodiment of the invention; Adopt Session Initiation Protocol to communicate between said client, call control server and the far-end, wherein, SIP is as the signaling protocol in the IP network; Its major function is to develop and manage calling; The agreement of transmission of media data then adopts RTP (Realtime Transport Protocol, RTP)/RTCP (Realtime Transport Control Protocol, RTCP Real-time Transport Control Protocol).Session Initiation Protocol is as the unified call control protocol in the described video session system of the embodiment of the invention; Be used to accomplish user's unified certification and mandate; Call out control and manage with service trigger, and accomplish between the various videoconferencing service networks and and other networks between interconnection and interflow.
Further, said method can also comprise:
Said call control server is transmitted to center management server with said video call request and carries out authentication;
After said center management server confirms that said video call request is through authentication, notify said call control server that said video call request is sent to said far-end.
Wherein, the content that center management server is carried out authentication to the video call request in the embodiment of the invention comprises:
Center management server is carried out business control to the video call request, can control this visit according to the strategy that presets, for example: judge whether client has access rights etc. to the video of being asked.
Concrete; After the video call request is through authentication; Center management server sends to call control server with the video call request; Call control server is understood the user name of the session address (SIP URI) in the route header field values, and determines next jumping, and call control server sends to far-end with the video call request.
Further, step 101 can comprise:
The said video acknowledge message that said far-end will comprise the coding and decoding video information of self sends to said call control server;
Said call server is transmitted to center management server with said video acknowledge message;
Said center management server sends to said client with said video acknowledge message after in said video acknowledge message, adding the access path of said far-end.
Concrete, far-end returns the affirmation message that comprises coding and decoding video information through call control server to center management server.For example, 200OK is returned in the request of remote processor video call; SDP offer is provided (Session Description Protocol, Session Description Protocol) simultaneously, wherein comprises coding and decoding video information.
The 200OK that call control server will carry SDP offer responds request message, is transmitted to center management server.The video acknowledge message that center management server will comprise coding and decoding video information and access path is transmitted to client.
For example, after center management server was received 200OK, center management server was selected the coding/decoding information and the access path of use, revised SDP, transmitted 200OK and gave call control server.Wherein, access path can directly be pointed to far-end, also can pass through center management server, points to far-end again.Call control server is transmitted to client with 200OK.
Further, step 102 can comprise:
When said access path is directly pointed to said far-end, between said client and said far-end, directly set up video flowing and connect;
When said access path is when pointing to said far-end through center management server, between said client and said center management server, and, set up video flowing between said center management server and the said far-end respectively and connect.
Wherein, center management server can adopt the multipoint video processing unit to realize in embodiments of the present invention.
Specifically, setting up video flowing connects and can realize through following technical scheme:
Client is in acknowledge message (ACK), to carry SDP answer behind the encoding and decoding reserved resource to reply message;
Call control server is transmitted ACK message and is given center management server;
The forwarding that center management server is removed control of video stream according to the offer in the 200OK message of answer of the answer in the ACK message and far-end; And center management server is revised the SDP in the customer end A CK message, sends ACK and gives call control server, is transmitted to far-end again;
According to access path, between client and far-end, set up video flowing and connect; Or between client and the center management server, set up video flowing between center management server and the far-end respectively and connect.
Further, said method can also comprise:
When said client terminate was connected with the video flowing of said far-end, said client was sent to said far-end through said center management server and is stopped conversation message;
Said far-end stops to send video flowing to said client according to said termination conversation message.
Concrete, far-end stops to send video flowing to said client according to said termination conversation message and comprises:
Far-end stops to send video flowing according to the message that stops session, and replys 200OK and give call control server and center management server;
Call control server is transmitted to client with 200OK, and control centre's management server stops forwarding this video flowing.
Further, said method can also comprise:
Belong under the application scenarios of the network equipment in the same area not at said client and said far-end, be connected with the center management server of said far-end region through the center management server of service managing server with said client region.
Concrete, said method can comprise:
Said service managing server receives the video call request that said client is sent through the center management server of region, and said video call request is transmitted to the center management server of said far-end region;
The center management server of said far-end region receives said video call request, and said video call request is transmitted to said far-end;
Said far-end sends the video acknowledge message through the center management server of region to said service managing server, comprises coding/decoding information and the access path of self in the said video acknowledge message;
Said service managing server is transmitted to said video acknowledge message the center management server of said client region;
The center management server of said client region is transmitted to said client with said video acknowledge message;
Said client and said far-end are set up trans-regional video flowing and are connected through said video acknowledge message.
Specifically, service managing server has realized that under the center management server of the client of initiating cross-domain video call request and far-end region, setting up video flowing between the network element in the territory is connected.
Service managing server can be formed the multiple domain interconnect architecture with a plurality of single domains.Realize functions such as business control, content release, business/operation support, routing inquiry, charging by service managing server in the interconnection system to the linchpin center management server.Service managing server can not stored subordinate territory equipment, user profile; When increase on business operation support system, deletion client or equipment; Service managing server just is transmitted to center management server to relevant information, is handled by center management server.When service managing server needs relevant information, inquire about to center management server.Service managing server can be divided into multistage deployment as SML.Service managing server provides business support system from the function service interface to operator, user's self-operation management system, other multimedia application support system, to it business datum inquiry, business functions such as business setting is provided.
The major function of service managing server and realization require to comprise:
Cross-domain professional control: service managing server is supported the request of center management server when handling cross-domain video tour, carries out business control., service managing server returns the signaling address in the other side's center management server territory if allowing this request, if do not allow then return Reason For Denial.Service managing server storage subordinate domain routing information etc.
Service management: the function client of service managing server support and OSS interface, increase, deletion and the modification etc. of facility information, support equipment incorporates the setting of client and client access authority into.But service managing server is supporting business operation support function also, when the OSS interface is unrealized, realizes its function.
Content release: service managing server can be supported the function of external content release; Mainly comprise institute's scope ground control point audio-video frequency content and related data content; Service managing server need be inherited all content distributed group of higher level's service managing server when dividing into groups; And can create distinctive content distributed group of this territory, and such content resource in linchpin subordinate territory is issued in this group unification.Service managing server can be according to content distributed group to center management server, subordinate's service managing server query contents; Subordinate's service managing server or center management server can be set up content distributed group all on higher level's service managing server, even be empty.Service managing server is to after the video monitoring service ability of passing through web service service encapsulates of center management server reception; Can make up with the professional ability of passing through web service service encapsulates that receives from other application servers, the interface unification through unanimity represents to the user.
Charge: service managing server can be realized obtaining in real time/function of the charge informations such as duration/flow of historical media interviews from center management server, the SM of subordinate.
Ability encapsulation: service managing server can be realized the ability interface of opening to the outside world, and the Web Service interface that externally provides this territory that external ability can be provided supplies other system call.
Management is supported: service managing server can be accepted the management and control of higher level's service managing server to the registration of higher level's service managing server.Support SNMP (SimpleNetwork Management Protocol, Simple Network Management Protocol), accept the network management system management, realize OAMAgent functions such as configuration management, state, fault.Service managing server can not responsible business route implementing or signaling control, but center management server need be inquired about needed routing iinformation, equipment and user's attaching information to service managing server.
The method of a kind of video session that is proposed by the invention described above embodiment can find out that the real-time video Control on Communication signaling between equipment has adopted Session Initiation Protocol to realize.No matter be the system platform intercommunication; Still the PERCOM peripheral communication between platform and the platform, all with Session Initiation Protocol as the real-time video communication core, not only realized uniform communication protocol; Make the platform extensibility strengthen greatly; Intercommunication is easier between different platform and since Session Initiation Protocol self simple, convenient, superiority such as be suitable for, make whole system stability and reliability more.
As shown in Figure 2, based on the method embodiment of above-mentioned video session, the invention allows for a kind of video session system, this system comprises:
Far-end 22 is used to receive the video call request that said client is sent, and sends the video acknowledge message to said client; The coding and decoding video information and the access path that comprise self in the said video acknowledge message;
Call control server 23 is used to receive the said video call request that said client is sent, and said video call request is transmitted to said far-end; Also be used to receive the said video acknowledge message that said far-end sends to client, and said video acknowledge message is transmitted to said client, be connected so that said client is set up video flowing through said video acknowledge message with said far-end;
Adopt Session Initiation Protocol to communicate between said client, call control server and the far-end.
Further, as shown in Figure 3, said system can also comprise:
Center management server 34; After call control server receives said video call request; Said video call request is transmitted to center management server; Be used for authentication is carried out in said video call request, after through checking, notify said call control server that said video call request is sent to said far-end;
After the said video acknowledge message that will comprise the coding and decoding video information of self at said far-end sends to said call control server; Said call server is transmitted to center management server with said video acknowledge message; Said center management server also is used for after said video acknowledge message is added the access path of said far-end, said video acknowledge message being sent to said client.
Further, said system can also comprise:
Service managing server 25 (as shown in Figure 4); Be used for belonging under the application scenarios of the network equipment of same area not, the center management server of said client region is connected with the center management server of said far-end region at said client and said far-end;
Said service managing server specifically is used for:
Receive the video call request that said client is sent through the center management server of region; And said video call request is transmitted to the center management server of said far-end region, by the center management server of said far-end region said video call request is sent to said far-end;
Receive the video acknowledge message that said far-end sends through the center management server of region; The coding/decoding information and the access path that comprise self in the said video acknowledge message; And said video acknowledge message is transmitted to the center management server of said client region, by the center management server of said client region said video acknowledge message is transmitted to said client.Technical scheme by the invention described above provides can find out that it is a kind of that the embodiment of the invention provides.
Need to prove; Video session system of the present invention is based on that the method for the described video session of Fig. 1 embodiment obtains; Comprised identical or corresponding techniques scheme in the method with video session; Therefore, the present invention does not do specifically at this and gives unnecessary details, and the detailed technology scheme that relates to can be referring to the specific descriptions among Fig. 1 embodiment.
The above; Be merely the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technical staff who is familiar with the present technique field is in the technical scope that the present invention discloses; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.
Claims (10)
1. a video session method is characterized in that, comprising:
Client is sent the video call request through call control server to far-end; The ID that comprises said distal end I D and said far-end place passage in the said video call request;
Said far-end sends the video acknowledge message through said call control server to said client after receiving said video call request; The coding and decoding video information and the access path that comprise self in the said video acknowledge message;
Said client is set up video flowing through said access path with said far-end and is connected after receiving said video acknowledge message; Adopt Session Initiation Protocol to communicate between said client, call control server and the far-end.
2. method according to claim 1 is characterized in that, said method also comprises:
Said call control server is transmitted to center management server with said video call request and carries out authentication;
After said center management server confirms that said video call request is through authentication, notify said call control server that said video call request is sent to said far-end.
3. according to the method shown in the claim 1, it is characterized in that said far-end sends the video acknowledge message through said call control server to said client after receiving said video call request, comprising:
The said video acknowledge message that said far-end will comprise the coding and decoding video information of self sends to said call control server;
Said call server is transmitted to center management server with said video acknowledge message;
Said center management server sends to said client with said video acknowledge message after in said video acknowledge message, adding the access path of said far-end.
4. method according to claim 1 is characterized in that, said client is set up video flowing through said access path with said far-end and is connected after receiving said video acknowledge message, comprising:
When said access path is directly pointed to said far-end, between said client and said far-end, directly set up video flowing and connect;
When said access path is when pointing to said far-end through said center management server, between said client and said center management server, and, set up video flowing between said center management server and the said far-end respectively and connect.
5. according to arbitrary described method in the claim 1 to 5, it is characterized in that said method also comprises:
When said client terminate was connected with the video flowing of said far-end, said client was sent to said far-end through said center management server and is stopped conversation message;
Said far-end stops to send video flowing to said client according to said termination conversation message.
6. according to arbitrary described method in the claim 1 to 5, it is characterized in that said method also comprises:
Belong under the application scenarios of the network equipment in the same area not at said client and said far-end, be connected with the center management server of said far-end region through the center management server of service managing server with said client region.
7. method according to claim 6 is characterized in that, said method comprises:
Said service managing server receives the video call request that said client is sent through the center management server of region, and said video call request is transmitted to the center management server of said far-end region;
The center management server of said far-end region receives said video call request, and said video call request is transmitted to said far-end;
Said far-end sends the video acknowledge message through the center management server of region to said service managing server, comprises coding/decoding information and the access path of self in the said video acknowledge message;
Said service managing server is transmitted to said video acknowledge message the center management server of said client region;
The center management server of said client region is transmitted to said client with said video acknowledge message;
Said client and said far-end are set up trans-regional video flowing and are connected through said video acknowledge message.
8. a video session system is characterized in that, comprising:
Client is used for sending the video call request to far-end; The ID that comprises said distal end I D and said far-end place passage in the said video call request;
Far-end is used to receive the video call request that said client is sent, and sends the video acknowledge message to said client; The coding and decoding video information and the access path that comprise self in the said video acknowledge message;
Call control server is used to receive the said video call request that said client is sent, and said video call request is transmitted to said far-end; Also be used to receive the said video acknowledge message that said far-end sends to client, and said video acknowledge message is transmitted to said client, be connected so that said client is set up video flowing through said video acknowledge message with said far-end;
Adopt Session Initiation Protocol to communicate between said client, call control server and the far-end.
9. system according to claim 8 is characterized in that, said system also comprises:
Center management server; After call control server receives said video call request; Said video call request is transmitted to center management server; Be used for authentication is carried out in said video call request, after through checking, notify said call control server that said video call request is sent to said far-end;
After the said video acknowledge message that will comprise the coding and decoding video information of self at said far-end sends to said call control server; Said call server is transmitted to center management server with said video acknowledge message; Said center management server also is used for after said video acknowledge message is added the access path of said far-end, said video acknowledge message being sent to said client.
10. system according to claim 9 is characterized in that, said system also comprises:
Service managing server is used for belonging under the application scenarios of the network equipment of same area not at said client and said far-end, and the center management server of said client region is connected with the center management server of said far-end region;
Said service managing server specifically is used for:
Receive the video call request that said client is sent through the center management server of region; And said video call request is transmitted to the center management server of said far-end region, by the center management server of said far-end region said video call request is sent to said far-end;
Receive the video acknowledge message that said far-end sends through the center management server of region; The coding/decoding information and the access path that comprise self in the said video acknowledge message; And said video acknowledge message is transmitted to the center management server of said client region, by the center management server of said client region said video acknowledge message is transmitted to said client.
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| CN201110436197XA CN102523226A (en) | 2011-12-22 | 2011-12-22 | Video session method and system |
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| CN201110436197XA CN102523226A (en) | 2011-12-22 | 2011-12-22 | Video session method and system |
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| CN106358008A (en) * | 2015-07-17 | 2017-01-25 | 三亚中兴软件有限责任公司 | Method for avoiding repeated call admission and meeting television terminal device |
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| CN111787262A (en) * | 2020-07-10 | 2020-10-16 | 上海茂声智能科技有限公司 | Method, system, equipment and storage medium for local area network audio and video call |
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