CN1278554C - Video communication service system, video communication service operation method and service center - Google Patents
Video communication service system, video communication service operation method and service center Download PDFInfo
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Abstract
The present invention relates to a method and a system for operating a video service, wherein a multipoint control unit is connected with a video terminal via a communication network. The present invention is characterized in that a request of the video service is accepted by a service center connected with the multipoint control unit via a computer network, resources of the multipoint control unit are dispatched, and the video service is managed and driven by the center. The present invention also relates to a service center for operating the video service, which comprises a Web server and a service acceptance module, wherein the Web server receives a user request on the network in the face of a user; the service acceptance module receives the user information intensively transferred by the Web server, and dispatches the resources of the multipoint control unit via the computer network.
Description
The present invention relates to the multimedia communication technology field, particularly relate to the video conferencing technical field.
Videoconferencing service is the multimedia service that informixs such as voice, image, data is carried out together long-distance transmissions, and the service that videoconferencing service provides is a video conference, can comprise image, voice-and-data three class contents.Make people at the sound that carries out both can having heard when the strange land exchanges the other side, can see the other side's image again, strengthen the sense of reality, cordial feeling and the telepresenc that exchange.Videoconferencing service can be used for fields such as military affairs, politics, economy, education, health, gives full play to true, efficient, real-time advantage, and means such as simple and effective communication, management, Coordination Decision are provided for people.
Video conferencing service is a kind of of videoconferencing service, is a kind of communication mode that utilizes TV tech and equipment to hold a meeting between two places or a plurality of place by transmission channel.As shown in Figure 1, the TV conference system of prior art generally is made up of video terminal (claim not only video conference terminal), transmission channel, multipoint control unit several parts such as (but also claiming MCU or MCU).Below will describe video terminal, multipoint control unit, transmission channel respectively.
Terminal equipment (being video conference terminal) is general direct by user's operation, and the I/O of signals such as video, audio frequency, data is provided.Comprise video input-output apparatus, audio input/output device, terminal handler, terminal management system etc., can also select to be equipped with peripheral hardwares such as sound console, power amplifier, large-screen, electronic whiteboard according to the service needed of different user.
The effect of video terminal is that the live image signal of a certain meeting point, voice signal and relevant data-signal are gathered, compressed encoding, delivered to transmission channel after multiplexed.Simultaneously the video conferencing signal that receives is classified, decoded, be reduced into the image, voice and the data-signal that receive the meeting-place; Video terminal also will be sent to MCU with the meeting control signal (as request floor, application ownership etc.) of this point.Also need carry out the control command of MCU simultaneously to this point.
As shown in Figure 1, in the prior art, multipoint control unit (being MCU) is the control core of TV conference system.When the terminal quantity that participates in a conference during, must control through MCU more than 2.All terminals all will be connected to MCU by standard interface, and H.221, H.242, H.243, T.120 MCU waits exchange that the regulation of agreement realizes image and voice and mix according to international standard, realizes the correlation functions such as control in all meeting-place.In general, MCU is divided into main frame and operating desk two parts, and main frame is finished the correlation function of above-mentioned agreement regulation, and operating desk provides the operation control and the man-machine interface of main frame operation, by operating desk main frame is carried out various operations and issue an order.When carrying out comprehensive videoconferencing service, also need to be equipped with counter, finish business functions such as external meeting registration, reservation, charge.
Forming a complete TV conference system must couple together terminal equipment and MCU through communication network, and transmission channel can be modes such as optical fiber, cable, microwave or satellite physically.The communication network that video conferencing is commonly used has: public switched telephone network (PSTN), public packet switching network (PSPDN), Digital Data Net (DDN) etc., the broadband switching network of taking as the leading factor with ATM (asynchronous transfer mode) technology develops rapidly at present, for video conferencing provides a wider application, as Integrated Service Digital Network, IP network and IQ net.More, make video conferencing service possess the condition that spreads to ordinary populace rapidly along with the popularizing of present ISDN net and Internet.
The video communication service system of prior art lacks the effective administrative mechanism under the big capacity of system, therefore can not support the extensive expansion of MCU capacity, and can only be applicable to very low traffic carrying capacity, and the utilization ratio of network is very low.Therefore, even adopt universal isdn network or IP network (IP network), also be difficult to really realize effectively publicization operation as transmission channel.
The object of the present invention is to provide a kind of video communication service system, videoconferencing service implementation method and corresponding business center fixture, it can support big capacity extension and the co-ordination of MCU effectively, improve the utilization ratio of TV conference system, thereby can really realize the publicization operation of video conferencing service effectively.
According to an aspect of the present invention, provide a kind of videoconferencing service implementation method, wherein multipoint control unit is connected by communication network with video terminal; It is characterized in that comprising following steps: a service center device that is connected with multipoint control unit by computer network is set, this service center device is provided at the www server that receives service request on the network, with the business information that receives the concentrated transmission of www server, reach the service handling module of the multipoint control unit resource being dispatched by described computer network; Www server sends to the service handling module with the convention business of reservation, and the service handling module starts scheduling mechanism, if the scheduling failure feeds back to www server reservation failure; The service handling module specifies time started notice multipoint control unit to hold a meeting in convention business.
According to another aspect of the present invention, provide a kind of service center device that is used to realize videoconferencing service, comprise: Web server (www server) receives service request on network; With the service handling module, receive Web server and concentrate the business information of transmitting, and the multipoint control unit resource is dispatched by computer network.
According to a further aspect of the invention, provide a kind of video communication service system, comprised: by communication network continuous video terminal and multipoint control unit; It is characterized in that further comprising: the service center device, its as calculated the machine network link to each other with multipoint control unit, comprise: www server receives service request on network; With the service handling module, receive www server and concentrate the business information of transmitting, and the multipoint control unit resource is dispatched by described computer network.
Proposition of the present invention is the publicization operation at videoconferencing service, the service center device that links to each other with multipoint control unit by machine network as calculated, accept the videoconferencing service request, scheduling multipoint control unit resource, centre management also drives videoconferencing service, can support big capacity extension and the co-ordination of MCU effectively, improve the utilization ratio of TV conference system, thereby can really realize the publicization operation of video conferencing service effectively.
Particularly, traditional TV conference system and implementation method require a MCU that a control desk is arranged, and have the special messenger to safeguard.And the present invention can bring following benefit after having added the service center device that is used for dispatching MCU resource: can reach system's unattended duty, running automatically in 24 hours, this is the prerequisite of video signal publicization operation; A service center device can be managed a plurality of MCUs simultaneously, and centralized management has reduced service equipment and attendant; The service center device can provide complete charge system, the system of accounts, for popularizing of video signal publicization operation provides reliable guarantee.
For making the purpose, technical solutions and advantages of the present invention clearer, by the following examples, and with reference to accompanying drawing, the present invention is described in more detail.Wherein
Fig. 1 shows the TV conference system of prior art;
Fig. 2 shows according to TV conference system physics networking schematic diagram of the present invention;
Fig. 3 shows according to first preferred embodiment of the present invention, the schematic diagram under the service center device busy state;
Fig. 4 shows according to first preferred embodiment of the present invention, sees the service that videoconferencing service provides from user perspective;
Fig. 5 shows according to first preferred embodiment of the present invention, videoconferencing service reservation flow chart;
Fig. 6 shows according to second preferred embodiment of the present invention, the schematic diagram of the service handling module of service center device.
Fig. 2 shows according to TV conference system physics networking schematic diagram of the present invention.As shown in the figure, whole video communication network mainly is made up of communication network, computer network, multipoint control unit MCU (being MCU), video terminal, five parts of service center device.Below each several part is described respectively.
Communication network provides the supporting network of realizing videoconferencing service, and communication network can be E1 private network, V35 private network, ISDN net, IP network, IQ net, and any other available communication networks network.Multipoint control unit MCU inserts and manages the request of video terminal, is videoconferencing service core processing equipment, and requiring has larger capacity, for example can insert the video terminal about 100.Video terminal, equipment and television set that video signal user buys use together, provide the video signal service to the video signal user.The service center device is management and the control centre that drives videoconferencing service, and functions such as professional application, service handling, charging are provided.Computer network is the supporting network of service center device management MCU, and it can be any available computer network, and TCP/IP network (TCP network) does not for example perhaps use or do not use merely the local area network (LAN) of ICP/IP protocol.
As shown in Figure 2, multipoint control unit is connected by communication network with video terminal, and this communication network can be E1 private network, V35 private network, ISDN net, IP network, IQ net, and any other available communication networks network.Core concept of the present invention is, sets up the service center device, accepts the videoconferencing service request, scheduling multipoint control unit resource, and centre management also drives videoconferencing service.Communicating by letter between service center device and the multipoint control unit undertaken by computer network.
Relate to a kind of videoconferencing service implementation method that proposes according to an aspect of the present invention, wherein multipoint control unit is connected by communication network with video terminal; By the service center device that machine network as calculated links to each other with multipoint control unit, accept the videoconferencing service request, scheduling multipoint control unit resource, centre management also drives videoconferencing service.
Preferably, computer network can be the TCP/IP network, also can be local area network (LAN).
Preferably, the service center device is communicated by letter with multipoint control unit by snmp protocol (Simple Network Management Protocol).
Preferably, the service center device receives user request to the user by Web server (Web Server) on network; With by the service handling module, receive Web server and concentrate the user profile of transmitting, and the multipoint control unit resource is dispatched by described computer network.
Preferably, the service center device further carries out storage by database.
Preferably, the service handling module adopts client/server (Client/Server) architecture of extendible multilayer.
Preferably, adopt the Socket (interface) of hold mode to be connected between Web server and the Service Handling Center.
Preferably, the implementation method of videoconferencing service of the present invention can further comprise following steps: (a) user preengages the meeting that it needs by the browser access Web server; (b) Web server sends to the service handling module with the meeting of user's reservation, and the service handling module starts scheduling mechanism, if the scheduling failure feeds back to Web server reservation failure; (c) specify time started notice multipoint control unit to hold a meeting the user; (d) meeting adjourned when the time arrives, the closing session of service handling module notice multipoint control unit.
Preferably, Web server can provide the personal account of setting up based on video signal user's application, and provides the service that comprises that password is revised, the account fees situation is inquired about to the video signal user.
Preferably, Web server can provide the user management means, is used for user management by operator, comprises that the video signal user opens an account, the modification of video signal subscriber data, video signal user's cancellation, video signal user inquiring.
Preferably, Web server can provide the site management means, and the meeting-place is pre-defined and be stored in the database, selects each meeting-place that will have a meeting and join in the meeting when the user wants to call a meeting from database.
Preferably, Web server can provide the conference management means, is used to handle meeting and is not dispatching, dispatching successfully, holding, finishing, hanging up the variation between each state.
Preferably, Web server can provide the expenses management means, for operator provides chargeable service and provides the inquiry into expenses service for the video signal user.
Preferably, Web server can provide the internal announcement hurdle, is used for the information broadcast of system manager to the shop assistant; With outside announcement board, be used for the information broadcast of system manager to the video signal user.
Relate to a kind of service center device that is used to realize videoconferencing service that proposes according to another aspect of the present invention, comprise: Web server receives user's request to the user on network; With the service handling module, receive Web server and concentrate the user profile of transmitting, and the multipoint control unit resource is dispatched by computer network.
Preferably, computer network is TCP/IP network or local area network (LAN).
Preferably, adopt the Socket of hold mode to be connected (socket connection) between Web server and the Service Handling Center.
Preferably, the service center device further comprises, and carries out the database of storage.
Preferably, the service handling module adopts snmp protocol to communicate by letter with multipoint control unit.
Preferably, the service handling module comprises: rm-cell, conference management unit, site management unit, service management unit and charge accounting statistic unit.
Preferably, the service handling module adopts the client of extendible multilayer.
Relate to a kind of video communication service system that proposes according to a further aspect of the invention, comprise: by communication network continuous video terminal and multipoint control unit; And this system further comprises: the service center device, its as calculated the machine network link to each other with multipoint control unit, accept the videoconferencing service request, scheduling multipoint control unit resource, centre management also drives videoconferencing service.
Preferably, communication network can be network or isdn network or the IP network based on ATM.
Preferably, computer network is TCP/IP network or local area network (LAN).
Preferably, communicating by letter between service center device and the multipoint control unit adopted snmp protocol.
Preferably, the service center device comprises: Web server receives user's request to the user on network; With the service handling module, receive Web server and concentrate the user profile of transmitting, and the multipoint control unit resource is dispatched by described computer network.
Preferably, the service center device further comprises: the database that carries out storage.
Preferably, the service handling module adopts the client of extendible multilayer.
The service center device need provide the service handling function, and this can be accepted by special Web website, and hands to the service handling module and finish, and the service handling module is carried out service management, i.e. service dispatching and control.Fig. 3 shows according to first preferred embodiment of the present invention, and the schematic diagram under the service center device busy state is the service center device in the empty frame among the figure, and as shown in Figure 3, the service center device is made of Web server, service handling module, database.The service center device receives user request to the user by Web server on network, perhaps receive user's request that counter transfers; By the service handling module, receive Web server and concentrate the user profile of transmitting, and the multipoint control unit resource is dispatched by described computer network; The service center device further carries out storage by database.
In order to adapt to the WWW pattern, can adopt the mode of website to make things convenient for the user to preengage video conference, system's correspondence provides Web Server the website, and what the user directly faced is exactly it.But for MCU that can let us with user's subscription information accepts, a unified control centre must be arranged, system's correspondence provides the service handling module, and it is sightless to the user's, mainly offers the video communication service operation merchant and monitors use.The service handling module is accepted Web Server on the one hand and is concentrated the user profile of transmitting, on the other hand with after these information stores, the scheduling, directly come into contacts with MCU, just have a problem here, be i.e. the MCU of service handling module and the different manufacturers problem of coming into contacts with.The communication protocol that different manufacturers provides might be differentiated, exchange for the service handling module can being handled communicate by letter with different manufacturers MCU, can adopt telecommunications network standard association agreement between service handling module and the MCU, for example can adopt snmp protocol, as long as each producer meets snmp protocol, and the substance unanimity of agreement just can reach the purpose that the product of service handling module and different manufacturers interconnects.Snmp protocol belongs to the application layer in the ICP/IP protocol group, is operated on the udp protocol in the ICP/IP protocol group.
In addition, because the data that videoconferencing service need be handled are many, and also important, the system of present embodiment adopts the file layout of database as data.Database also is the part of service center device, and what it was finished is not only the simple function of storage, also needs deal with data backup, logic verify, the function treatment (calculate, data increase, delete, improve reprocessing etc.) relevant with database.
Can know from last surface analysis, provide the service center device of operation characteristic to comprise in the present embodiment: Web Server, service handling module and database.Directly in the face of the user, process user request and feedback result comprise functions such as disbursement and sattlement to Web Server; The service handling module is except that providing all required conferencing functions of videoconferencing service, and Core Feature is scheduling, i.e. MCU resource allocation function and session control function; Database is finished functions such as storage, security management, simple functions processing.
Fig. 4 shows according to first preferred embodiment of the present invention, the service that the videoconferencing service of seeing from user perspective provides.As shown in Figure 4, when needing, the user can adopt manual type or Web mode etc. to video conference of video-signal system reservation, finish a series of processing by video-signal system, and in user's startup meeting automatically in the fixed time, and the video terminal of access user reservation, after meeting adjourned, finish disbursement and sattlement (clearing form can be versatile and flexible) at the appointed time.Video-signal system among the figure refers to the set of MCU equipment and the required management system of operation, also comprises the communication networks such as isdn network that adopted.
The content that Web server provides in the present embodiment can comprise: the personal account of setting up based on video signal user's application, and provide to the video signal user and to comprise that password is revised, the service of account fees situation inquiry; The user management means are used for user management by operator, comprise that the video signal user opens an account, the modification of video signal subscriber data, video signal user's cancellation, video signal user inquiring; The site management means, the meeting-place is pre-defined and be stored in the database, selects each meeting-place that will have a meeting and join in the meeting when the user wants to call a meeting from database; The conference management means are used to handle meeting and are not dispatching, dispatching successfully, holding, finishing, hanging up the variation between each state; The expenses management means are for operator provides chargeable service and provides the inquiry into expenses service for the video signal user; The internal announcement hurdle is used for the information broadcast of system manager to the shop assistant; With outside announcement board, be used for the information broadcast of system manager to the video signal user.
Fig. 5 shows according to first preferred embodiment of the present invention, videoconferencing service reservation flow chart.As shown in Figure 5, the reservation flow process of videoconferencing service may further comprise the steps substantially in the present embodiment: (1) user preengages the meeting that it needs by browser access Web Server; (2) Web Server sends to the service handling module with the meeting of user's reservation, and the service handling module starts scheduling mechanism, if the scheduling failure feeds back to WebServer reservation failure; Otherwise specify time started notice MCU to hold a meeting the user; (4) meeting adjourned when the time arrives, service handling module notice MCU closing session; (5) wait for charging and clearing.
Adopted the mode of Web Server reservation in the present embodiment, adopting the mode of website that service access and service are provided is the direction of Communication Development from now on, and she has close friend, quick and easy, 24 hours advantages such as service.Specifically, Web Server brings following benefit in the website: (1) video signal user can preengage the video conference that will hold whenever and wherever possible, as long as can go up Intenet; (2) the video signal user can check cost of use inventory, statement of account and the historical operating position of oneself predetermined video conference whenever and wherever possible, allow the user relieved, save worry; (3) web station interface is very friendly, and feature operation is simple, and Instant Help can help the faster and better use videoconferencing service of user; (4) promoting service of video-signal system operator, service announcements are issued by the website mode, not only can have more video signal user, popularize video-signal system faster, and have reduced the maintenance of information amount.For the user that can not go up Internet, near the self-service online in business hall or entrust the shop assistant to handle conference reservation to get final product.
Fig. 6 shows according to second preferred embodiment of the present invention, the schematic diagram of the service handling module of service center device.As shown in Figure 6, described service handling module adopts Client/Server (client/server) architecture of extendible multilayer.Wherein S1, S2, S3 are the code names of striding level.From in logic, S3 level service handling module is as client server with S2 level service handling module, S2 level service handling module is as client server with S1 level service handling module, S1 level service handling module is with the server of MCU as the client, and S1 level service handling module is communicated by letter with MCU by snmp protocol.
The architecture of this Client/Server can be carried out the video system dilatation easily, thereby supports the more MCU of management.Senior (S2 level, S3 level) service handling module and protocol conversion function is provided in order to different communication network (as ISDN net and IP network) is linked together, thereby is formed a huge video conference networks.Adapt to public's operation of videoconferencing service better.
Be combined in the Web server that service is provided towards the user on the network, can realize towards the public a kind of and unattended duty, the videoconferencing service of operation automatically.
Above embodiment is only unrestricted in order to explanation the present invention, although the present invention is had been described in detail with reference to above preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment, be out of shape the present invention or be equal to replacement, and not breaking away from the spirit and scope of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (26)
1, a kind of videoconferencing service implementation method, wherein multipoint control unit is connected by communication network with video terminal; It is characterized in that comprising following steps:
A service center device that is connected with multipoint control unit by computer network is set, this service center device is provided at the www server that receives service request on the network, with the business information that receives the concentrated transmission of www server, reach the service handling module of the multipoint control unit resource being dispatched by described computer network;
Www server sends to the service handling module with the convention business of reservation, and the service handling module starts scheduling mechanism, if the scheduling failure feeds back to www server reservation failure;
The service handling module specifies time started notice multipoint control unit to hold a meeting in convention business.
2, videoconferencing service implementation method as claimed in claim 1 is characterized in that, described computer network is TCP network or local area network (LAN).
3, videoconferencing service implementation method as claimed in claim 1 is characterized in that, described service center device is communicated by letter with multipoint control unit by Simple Network Management Protocol.
4, videoconferencing service implementation method as claimed in claim 1 is characterized in that, described service center device further carries out storage by database.
5, videoconferencing service implementation method as claimed in claim 1 is characterized in that, described service handling module adopts the client of extendible multilayer.
6, videoconferencing service implementation method as claimed in claim 1 is characterized in that, adopts the socket of hold mode to be connected between described www server and the service handling module.
7, videoconferencing service implementation method as claimed in claim 1 is characterized in that further comprising following steps:
Meeting adjourned when the time arrives, the closing session of service handling module notice multipoint control unit.
8, videoconferencing service implementation method as claimed in claim 1, it is characterized in that, described www server can provide: the personal account of setting up based on video signal user's application, and provide to the video signal user and to comprise that password is revised, the service of account fees situation inquiry.
9, videoconferencing service implementation method as claimed in claim 1, it is characterized in that, described www server can provide: the user management means, be used for user management by operator, and comprise that the video signal user opens an account, the modification of video signal subscriber data, video signal user's cancellation, video signal user inquiring.
10, videoconferencing service implementation method as claimed in claim 1, it is characterized in that, described www server can provide: the site management means, the meeting-place is pre-defined and be stored in the database, selects each meeting-place that will have a meeting and join in the meeting when the user wants to call a meeting from database.
11, videoconferencing service implementation method as claimed in claim 1, it is characterized in that, described www server can provide: the conference management means are used to handle meeting and are not dispatching, dispatching successfully, holding, finishing, hanging up the variation between each state.
12, videoconferencing service implementation method as claimed in claim 1 is characterized in that, described www server can provide: the expenses management means, and for operator provides chargeable service and provides the inquiry into expenses service for the video signal user.
13, videoconferencing service implementation method as claimed in claim 1 is characterized in that, described www server can provide: the internal announcement hurdle is used for the information broadcast of system manager to the shop assistant; With outside announcement board, be used for the information broadcast of system manager to the video signal user.
14, a kind of being used for dispatched the service center device of realizing videoconferencing service to the multipoint control unit resource, comprises:
Interconnective www server and service handling module; Wherein
Www server receives service request on network, the convention business of preengaging is sent to the service handling module;
The service handling module links to each other with multipoint control unit by computer network, receives www server and concentrates the business information of transmitting, and starts scheduling mechanism, specifies time started notice multipoint control unit to hold a meeting in convention business; If the scheduling failure, www server is given in feedback reservation failure.
15, service center device as claimed in claim 14 is characterized in that, described computer network is TCP network or local area network (LAN).
16, service center device as claimed in claim 14 is characterized in that, adopts the socket of hold mode to be connected between described www server and the service handling module.
17, service center device as claimed in claim 14 is characterized in that further comprising, and carries out the database of storage.
18, service center device as claimed in claim 14 is characterized in that, described service handling module adopts Simple Network Management Protocol to communicate by letter with multipoint control unit.
19, service center device as claimed in claim 14, it is characterized in that described service handling module comprises: the interconnective rm-cell that is used for resource management, be used for conference management the conference management unit, be used for site management the site management unit, be used for user management service management unit, be used for the charge accounting statistic unit of charge accounting.
20, service center device as claimed in claim 14 is characterized in that, described service handling module adopts the client of extendible multilayer.
21, a kind of video communication service system comprises:
By communication network continuous video terminal and multipoint control unit; It is characterized in that further comprising:
Interconnective www server and service handling module; Wherein
Www server receives service request on network, the convention business of preengaging is sent to the service handling module;
The service handling module links to each other with multipoint control unit by computer network, receives www server and concentrates the business information of transmitting, and starts scheduling mechanism, specifies time started notice multipoint control unit to hold a meeting in convention business; If the scheduling failure, www server is given in feedback reservation failure.
22, video communication service system as claimed in claim 21 is characterized in that, described communication network can be network or ISDN networks or the IP network based on asynchronous transfer mode.
23, video communication service system as claimed in claim 21 is characterized in that, described computer network is TCP network or local area network (LAN).
24, video communication service system as claimed in claim 21 is characterized in that, communicating by letter between described service handling module and the multipoint control unit adopted Simple Network Management Protocol.
25, video communication service system as claimed in claim 21 is characterized in that further comprising: the database that carries out storage.
26, video communication service system as claimed in claim 21 is characterized in that, described service handling module adopts the client of extendible multilayer.
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WO2011029316A1 (en) * | 2009-09-10 | 2011-03-17 | 中兴通讯股份有限公司 | Multimedia conference engine system and method |
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CN100359942C (en) * | 2003-11-05 | 2008-01-02 | 华为技术有限公司 | Visual conference system and its managing method |
CN100337477C (en) * | 2004-04-02 | 2007-09-12 | 华为技术有限公司 | Video communication service realizing method |
CN100469148C (en) * | 2005-10-31 | 2009-03-11 | 中国电信股份有限公司 | System and method for supporting video and audio services, and WEB type service by using dual service stacks |
CN1852415B (en) * | 2005-12-28 | 2010-05-05 | 华为技术有限公司 | Video-signal flow-medium system and method for realizing flow-medium increment business |
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CN101815067B (en) * | 2010-03-08 | 2014-09-10 | 中兴通讯股份有限公司 | Multimedia conference realization method and system |
CN102269977B (en) * | 2010-06-07 | 2013-12-11 | 深圳市协立智能技术有限公司 | Control method of conference room device |
CN105281924A (en) * | 2014-06-30 | 2016-01-27 | 中兴通讯股份有限公司 | Conference creating method and system, and conference server |
CN106162044A (en) * | 2015-04-15 | 2016-11-23 | 中兴通讯股份有限公司 | Meeting method for reconstructing and device |
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