Hybrid cloud video conferencing system and calling method thereof

Abstract

The present invention provides a hybrid cloud video conferencing system and a calling method thereof. The method comprises: in a public network mode, a first conference call is established between a terminal and a control unit; in an intranet mode, a hybrid signaling device receives the first conference call data of the control unit in reverse synchronization, and performs conference reconstruction to maintain the connection between the terminal and the control unit; the second conference call data newly generated by the terminal in the intranet mode is imported into the hybrid signaling device through a hybrid access device, and the hybrid signaling device initiates signaling control on the terminal and the control unit to establish a new connection between the terminal and the control unit. The hybrid cloud video conferencing system and the calling method thereof of the present invention continue the advantages of the hybrid cloud, realize private deployment with minimal resources, and integrate a hybrid signaling device and a hybrid access device, supporting conference holding and free calling functions in the intranet mode isolated from the public network video conferencing system.

Description

Technical Field

[0001] The present invention relates to the field of communication technologies, and in particular to a hybrid cloud video conferencing system and a calling method thereof. Background Art

[0002] Internet-based video communication technology is widely used in video conferencing scenarios in work and life. The deployment of cloud video conferencing systems is divided into three modes: public cloud, private cloud and hybrid cloud.

[0003] Public cloud deployment: Customers do not need to deploy cloud services, just download the client and register the enterprise to use it.

[0004] Public cloud is a cloud infrastructure provided to a wide range of users, individuals or enterprises. A public cloud is a third-party public cloud provider that provides users with server space in a virtual environment that can be accessed via the Internet. Users can then access these servers by purchasing public cloud services such as cloud servers, data storage, and other cloud-related services.

[0005] In a public cloud, all hardware, software, and other supporting infrastructure are owned and managed by the cloud provider. Users share the same hardware, storage, and network equipment with other organizations or cloud "tenants" and can access services and manage accounts using a web browser. Public cloud deployments are typically used to provide web-based email, online office applications, storage, and test and development environments.

[0006] The advantages of public cloud are: lower cost, no need to buy hardware or software, only pay for the services used; no maintenance, maintenance is provided by the service provider; almost unlimited scalability, providing on-demand resources to meet business needs; high reliability, with many servers to ensure protection from failures. But at the same time, many people are worried about the security and privacy of public cloud. So there is private cloud.

[0007] Private cloud deployment: Customers need to fully deploy a full set of cloud services and use supporting terminals to provide video services without accessing the public network video conferencing system.

[0008] Private cloud is another form of cloud computing. It provides a dedicated cloud environment for a business or organization. Private cloud can be operated internally by the IT team within the business or organization behind the organization's firewall, so the organization has better control over its computing resources. Private cloud is mainly used by enterprises, so it is also considered a type of enterprise cloud.

[0009] A private cloud can be physically located in an organization's on-site data center or hosted by a third-party service provider. In a private cloud, services and infrastructure are always maintained on a private network, and the hardware and software are dedicated to the organization. Private clouds make it easier for organizations to customize resources to meet specific IT needs. Private clouds are typically used by government agencies, financial institutions, and other medium to large organizations with business-critical operations that want greater control over their environment.

[0010] The advantages of private cloud are: higher flexibility, organizations can customize the cloud environment to meet specific business needs; higher security, resources are not shared with other organizations, so higher control and security levels can be achieved; higher scalability, private cloud still has the scalability and efficiency of public cloud. However, the cost of private cloud is relatively high, and the maintenance cost is not low. Therefore, some manufacturers have combined public cloud and private cloud to launch hybrid cloud.

[0011] Hybrid cloud deployment: Customers only need to deploy a small number of services such as recording / media to meet the privatization of resources and rely on the basic services of the public cloud (address book / conference control / authentication / billing...).

[0012] A hybrid cloud is a cloud computing model that combines one or more public and private cloud environments over a secure connection, such as a VPN connection or leased lines, allowing data and applications to be shared between different cloud environments. When applications running on a private cloud experience a usage peak, they can automatically "burst" to a public cloud environment for additional on-demand capacity. This is called "cloud bursting." Since the additional demand will be on the public cloud, there is no need to worry about provisioning hardware in advance to meet peak demand. There are two ways to connect public and private clouds: VPN and point-to-point dedicated connections.

[0013] Hybrid cloud is often considered the "best of both worlds," combining on-premises infrastructure or private cloud with public cloud, allowing organizations to take advantage of the benefits of both. In a hybrid cloud, data and applications can move between private and public clouds, providing greater flexibility and more deployment options.

[0014] Figure 2 A conventional hybrid cloud conference system is shown, in which the terminals ep-1, ep-2 and ep-3 in the enterprise intranet need to establish a new conference call with the help of the access device Access and the signaling device SIG deployed in the public cloud. Therefore, when the public network and the intranet are disconnected for some reason, new conference calls cannot be established between the terminals in the intranet.

[0015] Among the three deployment modes mentioned above, hybrid cloud deployment is the best choice for enterprises that have certain privatization needs but do not want to deploy a full set. As mentioned above, this choice has a flaw, that is, it is somewhat dependent on the public cloud. For example, if the enterprise isolates the public network video conferencing system, it cannot make conference calls. Currently, enterprises that provide hybrid cloud video conferencing systems do not support the ability to provide calls after isolating the public network video conferencing system. At most, they can ensure that the meeting will not be interrupted after a short isolation of the public network video conferencing system (the public network video conferencing system is disconnected). Summary of the invention

[0016] The present invention aims to provide a hybrid cloud video conferencing system and a calling method thereof, which can meet the needs of hybrid cloud users to privatize a small amount of resources and have the function of being able to make independent calls after isolating the public network video conferencing system. After the intranet video conferencing system is disconnected from the public network video conferencing system, it not only supports the retention of existing calls, that is, the meetings that have been opened in the public network video conferencing system environment are not interrupted; it also supports the initiation of new calls, that is, new calls can be initiated at will.

[0017] In a first aspect, the present invention provides a calling method in a hybrid cloud video conferencing system, characterized in that the hybrid cloud video conferencing system includes an intranet video conferencing system and a public network video conferencing system, wherein the intranet video conferencing system includes interconnected terminals, a hybrid signaling device, a hybrid access device and a control unit, and the method includes:

[0018] When the intranet video conferencing system is connected to the public network video conferencing system, a first conference call is established between the terminal and the control unit through the public network video conferencing system;

[0019] When the intranet video conferencing system is disconnected from the public network video conferencing system,

[0020] The hybrid signaling device receives the first conference call data reversely synchronized by the control unit and performs conference reconstruction to maintain the connection between the terminal and the control unit based on the first conference call;

[0021] The second type of conference call data newly generated by the terminal after the intranet video conference system is disconnected from the public network video conference system is introduced into the hybrid signaling device through the hybrid access device, and the hybrid signaling device initiates signaling control on the terminal and the control unit to establish a new connection between the terminal and the control unit based on the second type of conference call.

[0022] In a second aspect, the present invention further provides a hybrid cloud video conferencing system, characterized in that the hybrid cloud video conferencing system includes an intranet video conferencing system and a public network video conferencing system, wherein the intranet video conferencing system includes interconnected terminals, a hybrid signaling device, a hybrid access device and a control unit, wherein:

[0023] When the intranet video conferencing system is connected to the public network video conferencing system, the public network video conferencing system is used to establish a first conference call between the terminal and the control unit;

[0024] When the intranet video conferencing system is disconnected from the public network video conferencing system,

[0025] The hybrid signaling device includes a conference reconstruction module, which is used to receive the first conference call data reversely synchronized by the control unit and perform conference reconstruction to maintain the connection between the terminal and the control unit based on the first conference call;

[0026] The hybrid access device is used to import the second type of conference call data newly generated by the terminal after the intranet video conferencing system is disconnected from the public network video conferencing system into the hybrid signaling device;

[0027] The hybrid signaling device includes an intranet conference creation module, which is used to initiate signaling control on the terminal and the control unit to establish a new connection between the terminal and the control unit based on the second conference call.

[0028] The hybrid cloud video conferencing system and calling method provided by the present invention continue the advantages of hybrid cloud and realize private deployment with minimal resources. In addition, the hybrid signaling device and hybrid access device are integrated to realize hybrid cloud video conferencing that can be independently called in the intranet, and can support conference holding isolated from the public network video conferencing system, as well as free calling function in a pure intranet environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0030] Figure 1 1 is a schematic diagram of a hybrid cloud video conferencing system 100 provided in an embodiment of the present invention;

[0031] Figure 2 It is a conventional hybrid cloud video conferencing system in the prior art;

[0032] Figure 3 It is a flow chart of a calling method in a hybrid cloud video conferencing system provided by an embodiment of the present invention;

[0033] Figure 4 It is a flow chart of a calling method before the intranet video conferencing system provided by an embodiment of the present invention is disconnected from the public network video conferencing system;

[0034] Figure 5 It is a flow chart of a calling method after the intranet video conferencing system and the public network video conferencing system are restored to connection according to an embodiment of the present invention;

[0035] Figure 6 It is a block diagram of a hybrid cloud video conferencing system 100 provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0036] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. SUMMARY OF THE INVENTION

[0038] As described above, the present invention provides a hybrid cloud video conferencing system and a calling method thereof, which realizes a hybrid cloud video conferencing that can be independently called within the intranet, supports conference holding isolated from the public network video conferencing system, and a free calling function in a pure intranet environment.

[0039] Exemplary Methods

[0040] Figure 1 The hybrid cloud video conferencing system 100 provided by an embodiment of the present invention includes an intranet video conferencing system 102 and a public network video conferencing system 101, wherein the intranet video conferencing system 102 includes interconnected terminals ep-1 to ep-3, a hybrid signaling device Hybrid-SIG, a hybrid access device Hybrid-Access and a control unit MCU-1. The intranet video conferencing system 102 implements the privatized management of key resources for video conferencing. The public network video conferencing system 101 includes an access device Access and a signaling device SIG. The public network video conferencing system 101 has a full set of video conferencing capabilities, including access devices Access and signaling devices SIG in video basic services, as well as business services, such as appointment subsystem Dating, conference control subsystem MMS, address book Contacts, billing subsystem Charge, authentication subsystem Auth, etc.

[0041] Compared to Figure 2In the conventional hybrid cloud conference system shown in FIG. 1 , the intranet video conference system 102 adds a hybrid signaling device Hybrid-SIG and a hybrid access device Hybrid-Access. All intranet terminals ep are connected to the hybrid access device Hybrid-Access. Figure 1 The signaling channels L1 and L2 shown in . The hybrid signaling device Hybrid-SIG is different from the signaling device SIG. Preferably, when the intranet video conferencing system 102 is connected to the public network video conferencing system 101, hot standby operation is performed, and no data is run. Only when the intranet video conferencing system 102 is disconnected from the public network video conferencing system 101, the hybrid signaling device Hybrid-SIG is used to connect the control terminal ep with the control unit MCU-1. In addition, the hybrid signaling device Hybrid-SIG can also back up the data from the signaling device SIG in real time, so as to take over the work of the signaling device SIG in time when the signaling device SIG is disconnected.

[0042] Figure 3 The present invention provides a flow chart of a calling method in a hybrid cloud video conferencing system, which includes the following steps:

[0043] S301: When the intranet video conferencing system 102 is connected to the public network video conferencing system 101, a first conference call is established between the terminal ep and the control unit MCU-1 through the public network video conferencing system 101.

[0044] The first type of conference call is a conference call established in the public network mode when the intranet video conference system 102 is connected to the public network video conference system 101 .

[0045] Specifically, the establishment of a new meeting in the public network mode requires judging the legitimacy of the conference call. If it is legal, the first type of conference call is established, otherwise the establishment of the first type of conference call is rejected. The specific method for judging the legitimacy of the conference call includes but is not limited to: judging whether the conference number exists; judging whether the terminal number calling the conference number has the authority to join the conference room corresponding to the conference number; and / or judging whether the entry verification operation of the terminal calling the conference number is successful. For example, terminal ep-1 calls conference number 12345. If 12345 is not a normal conference number in the system and this conference number does not exist in the system, the call fails; terminal ep-2 calls conference number 18925, which is a normal conference number in the system, but the conference room authority corresponding to conference number 18925 is only open to terminals ep-5, terminal ep-7 and terminal ep-8, then the call of terminal ep-2 fails.

[0046] S302: When the intranet video conferencing system 102 is disconnected from the public network video conferencing system 101, the hybrid signaling device Hybrid-SIG receives the first type of conference call data reversely synchronized by the control unit MCU-1 and performs conference reconstruction to maintain the connection between the terminal ep and the control unit MCU-1 based on the first type of conference call.

[0047] When the intranet video conferencing system 102 is disconnected from the public network video conferencing system 101, only the intranet is available, i.e., it is in intranet mode. The hybrid signaling device Hybrid-SIG is responsible for reestablishing the first conference call that has been established in the public network mode and continuing to keep the first conference call uninterrupted, i.e., maintaining the connection between the terminal ep and the control unit MCU-1, so that both parties can continue to interact with media data. The entire process of switching the first conference call from the public network mode to the intranet mode is completed automatically and instantly, and the terminal user is unaware.

[0048] Specifically, the control unit MCU-1 synchronizes the established first conference call data to the hybrid signaling device Hybrid-SIG; the hybrid signaling device Hybrid-SIG maintains the connection based on the first conference call between the terminal ep and the control unit MCU-1 based on the received first conference call data.

[0049] For example, Figure 1 In the process, the terminal ep-1 establishes the first conference call in the public network mode. When it switches to the intranet mode, the control unit MCU-1 reversely synchronizes the first conference call data of the terminal ep-1 to the hybrid signaling device Hybrid-SIG through the line L7. The hybrid signaling device Hybrid-SIG continues to maintain the connection between the terminal ep-1 and the control unit MCU-1 based on the first conference call data, and completes the reconstruction of the first conference call established in the intranet mode when the two network modes are switched. The method for reverse synchronization of the first conference call data can be to rebuild the first conference call data based on the currently valid call record, or the control unit MCU-1 can back up the data from the signaling device SIG in real time and then synchronize it to the hybrid signaling device Hybrid-SIG. During the process of completing the conference reconstruction, the terminal does not need to call again to establish the conference, so it is imperceptible to the terminal.

[0050] S303: The second type of conference call data newly generated by the terminal ep after the intranet video conferencing system 102 is disconnected from the public network video conferencing system 101 is imported into the hybrid signaling device Hybrid-SIG through the hybrid access device Hybrid-Access. The hybrid signaling device Hybrid-SIG initiates signaling control on the terminal ep and the control unit MCU-1 to establish a new connection between the terminal ep and the control unit MCU-1 based on the second type of conference call.

[0051] The second type of conference call is a conference call established in the intranet mode after the intranet video conference system 102 is disconnected from the public network video conference system 101 .

[0052] The hybrid signaling device Hybrid-SIG is not only responsible for the conference reconstruction of the first conference call in step S302, but also responsible for the new conference establishment of the newly generated second conference call in step S303, that is, initiating signaling control to the terminal ep and the control unit MCU-1 to establish a new connection between the terminal ep and the control unit MCU-1 based on the second conference call, further enabling the two parties to continue to interact with media data.

[0053] In summary, the hybrid signaling device Hybrid-SIG and the hybrid access device Hybrid-Access are added to the intranet video conferencing system 102, which realizes the reconstruction and takeover of existing calls, i.e., the first type of conference calls, after being disconnected from the public network video conferencing system 101, and the acceptance of new calls in the intranet mode, i.e., the second type of conference calls.

[0054] Specifically, in the intranet mode, since there is no device for judging the legitimacy of the conference call, such as the address book and the authentication subsystem, in the intranet video conferencing system 102, the legitimacy of the conference call cannot be judged. In order to make the conference call proceed smoothly, the legitimacy judgment step can be omitted, and the second type of conference call is established regardless of whether the conference call is legal or not, and all the numbers of the second type of conference calls are considered as conference numbers, and a conference room is established based on the conference number, and all terminals calling the conference number are added to the established conference room, and only basic conference control functions are provided. For example, in the intranet mode, if the terminal ep-2, the terminal ep-3, and the terminal ep-7 all call the number 12345, the system will default the number 12345 as the conference number, and establish the conference room corresponding to the number 12345, and add the terminal ep-2, the terminal ep-3, and the terminal ep-7 to this conference room; assuming that the terminal ep-5 calls 857998, the terminal ep-5 will be added to the conference room corresponding to the number 857998.

[0055] In short, the conference calls accepted in the intranet mode ignore all call-irrelevant links and do not judge whether the conference call is legal, for example, it does not judge whether the conference number exists; it does not judge whether the terminal number calling the conference number has the authority to join the conference room corresponding to the conference number; it does not judge whether the entry verification operation of the terminal calling the conference number is successful, etc. Different from conference calls in the public network mode, all call-irrelevant links are omitted. Compared with conference calls in the public network mode, conference calls accepted in the intranet mode can provide the most basic conference control functions, such as only keeping the mute function available on the conference control interface, and other functions are all unavailable in gray, or only operable function buttons are displayed on the conference control interface. Therefore, in the intranet mode, any number can be called, all numbers are regarded as conference numbers, and corresponding conference rooms are established. In the intranet mode, all call-irrelevant links are omitted, and the present invention realizes the free calling function of the hybrid cloud video system in the pure intranet mode at the lowest cost.

[0056] Furthermore, if the user has other conference control requirements, other more complex conference control functions can be added according to the user's needs, providing different function options corresponding to different costs.

[0057] like Figure 4 As shown, the following specifically describes the establishment of a newly generated first conference call and the maintenance of an already established first conference call before the intranet video conferencing system 102 is disconnected from the public network video conferencing system 101, that is, in the public network mode:

[0058] S401: The first type of conference call data is imported into the access device Access through the hybrid access device Hybrid-Access.

[0059] Regardless of whether it is in intranet mode or public network mode, conference call data is transmitted through the hybrid access device Hybrid-Access. In intranet mode, the hybrid signaling device Hybrid-SIG of the intranet video conferencing system 102 is imported through the hybrid access device Hybrid-Access. In public network mode, the access device Access of the public network video conferencing system 101 is imported through the hybrid access device Hybrid-Access.

[0060] S402: The hybrid signaling device Hybrid-SIG performs a data-free hot standby operation, that is, a data-free idle operation.

[0061] Further, S403: the access device Access sends the first conference call data to the signaling device SIG.

[0062] S404: For the newly generated first conference call, the signaling device SIG initiates signaling control to the terminal ep and the control unit MCU-1 to establish a connection between the terminal ep and the control unit MCU-1.

[0063] For example, Figure 1 In the public network mode, the first type of conference call data initiated by the terminal ep-1 takes the lines L1 and L3, and is imported into the access device Access through the hybrid access device Hybrid-Access. The access device Access sends the conference call data of the terminal ep-1 to the signaling device SIG. The signaling device SIG initiates signaling control to the terminal ep-1 and the control unit MCU-1 to establish a connection between the terminal ep-1 and the control unit MCU-1 through the line L5.

[0064] S405: For the first conference call that has been established, the signaling device SIG maintains the connection between the terminal ep and the control unit MCU-1.

[0065] For example, Figure 1 In the public network mode, the conference call data of the established terminal ep-3 takes the line L2, and L4 is imported into the access device Access through the hybrid access device Hybrid-Access. The access device Access sends the conference call data of the terminal ep-3 to the signaling device SIG, and the signaling device SIG maintains the connection between the terminal ep-3 and the control unit MCU-1 (line L6).

[0066] like Figure 5 As shown, the following specifically describes the network mode conversion between the first conference call and the second conference call after the intranet video conferencing system 102 is connected to the public network video conferencing system 101, that is, after the public network mode is restored:

[0067] S501: The signaling device SIG maintains the connection between the terminal ep and the control unit MCU-1 based on the first conference call data saved before the connection is restored.

[0068] Since the first conference call is established in the public network mode, the signaling device SIG still maintains the first conference call that is being called (ie, not hung up). The signaling device SIG clears the data of the first conference call that has been hung up.

[0069] S502: The second conference call data is imported into the access device Access through the hybrid access device Hybrid-Access, and the access device Access sends the second conference call data to the signaling device SIG. It should be noted that this step is not necessary, and the second conference call data may not be sent to the signaling device SIG, but the second conference call data may be re-established in the subsequent step of the re-calling process.

[0070] S503: disconnect the second conference call, and notify the terminal ep of the second conference call to re-call the conference.

[0071] Since the second conference call is established in the intranet mode, new calls in the intranet ignore all legal checks, so the terminal ep is driven to re-call the conference, so that the terminal ep automatically re-calls.

[0072] S504: Since the internal and external networks are connected at this time, the hybrid access device Hybrid-Access imports the re-called data into the access device Access in the manner of establishing a new conference by the first conference call, and the access device Access transmits it to the signaling device SIG. The signaling device SIG determines whether the second conference call of the re-called is legal. If it is legal, the connection between the terminal ep and the control unit MCU-1 is re-established based on the second conference call. Otherwise, the connection between the terminal ep and the control unit MCU-1 is refused to be re-established based on the second conference call, and the second conference call data imported into the signaling device SIG is deleted.

[0073] Alternatively, if the second type of conference call data has not been imported into the signaling device SIG before, the second type of conference call data can be reconstructed when it is determined that the second type of conference call is legitimate.

[0074] If the call is legitimate, the second conference call can be successfully reestablished in the public network mode, otherwise the call is interrupted, and the terminal ep notifies the user of the reason for the conference interruption. The steps of re-calling the conference for the second conference call are automatically operated by the system and do not require user participation. If the call is legitimate, the user will not be aware of it.

[0075] S505: The hybrid signaling device Hybrid-SIG clears all conference call data.

[0076] Regardless of whether the first conference call or the second conference call, or the second conference call is successful or failed, the hybrid signaling device Hybrid-SIG will clear all the first conference call data and the second conference call data. The hybrid signaling device Hybrid-SIG continues to perform the data-free hot standby operation.

[0077] The above steps after restoring the public network mode realize the maximum conference call mode conversion based on the lowest cost. If the user has other requirements, such as complete synchronization of conference call data, the control unit MCU-1 needs to reversely synchronize and transmit the first conference call data and the second conference call data of the successful re-call to the signaling device SIG.

[0078] In addition, in order to protect the hybrid cloud video conferencing system, the signaling device SIG asks the connected terminal ep whether it is online at regular intervals:

[0079] When the intranet video conferencing system 102 is connected to the public network video conferencing system 101, if the terminal ep is online, the connection between the terminal ep and the control unit MCU-1 is maintained; if some of the terminals ep are offline, the connection between the offline terminal ep and the control unit MCU-1 is disconnected, and the conference call data corresponding to the offline terminal ep is cleared.

[0080] In the public network mode, the connected terminals ep are generally not all disconnected at the same time. In this mode, the signaling device SIG will promptly clear the terminals ep disconnected from the public network video conferencing system 101 to protect the hybrid cloud video conferencing system and release network resources.

[0081] If the signaling device SIG determines that all terminals ep in the intranet video conferencing system 102 are offline at the same time, it is considered that the intranet video conferencing system 102 and the public network video conferencing system 101 may be temporarily disconnected due to some reason. At this time, in order to avoid data loss, it is necessary to keep the conference call data corresponding to the offline terminal ep until the intranet video conferencing system 102 and the public network video conferencing system 101 are restored.

[0082] In the prior art, because there is no deployment of the hybrid signaling device Hybrid-SIG and the hybrid access device Hybrid-Access, that is, there is no intranet mode, so the signaling device SIG clears all the data of the terminal ep as soon as it detects the disconnected terminal ep. In the present invention, when the signaling device SIG finds that all the terminals ep in the intranet video conferencing system 102 are offline at the same time, it can be confirmed that it has switched to the intranet mode. At this time, it will not clear the data connection of all the offline terminals ep as in the prior art, but continue to maintain the conference call data corresponding to the offline terminal ep until the intranet video conferencing system 102 is restored to the public network video conferencing system 101.

[0083] In summary, the intranet video conferencing system 102 of the present invention realizes the maximum guarantee of normal operation of the hybrid cloud video conferencing system in the intranet mode by deploying the newly added hybrid signaling device Hybrid-SIG and the hybrid access device Hybrid-Access, and when the public network mode is restored, the first conference call and the second conference call running in the intranet mode are restored to the maximum extent, so as to improve the robustness of the hybrid cloud conferencing system, support the solution of isolating the public network at will without affecting the hybrid cloud video conferencing system, and improve the security of the product. When the enterprise is attacked and needs to cut off the public network, the hybrid cloud video conferencing system is not affected.

[0084] Exemplary Systems

[0085] Accordingly, an embodiment of the present invention also provides a hybrid cloud video conferencing system. Figure 6 1 is a block diagram of a hybrid cloud video conferencing system 100 provided in an embodiment of the present invention, such as Figure 6 As shown, the system provided in this embodiment includes: an intranet video conferencing system 102 and a public network video conferencing system 101, wherein the intranet video conferencing system 102 includes an interconnected terminal ep, a hybrid signaling device Hybrid-SIG, a hybrid access device Hybrid-Access and a control unit MCU-1, and the public network video conferencing system 101 includes an access device Access and a signaling device SIG, wherein:

[0086] When the intranet video conferencing system 102 is connected to the public network video conferencing system 101, the public network video conferencing system 101 is used to establish a first conference call between the terminal ep and the control unit MCU-1;

[0087] When the intranet video conference system 102 is disconnected from the public network video conference system 101,

[0088] The hybrid signaling device Hybrid-SIG includes a conference reconstruction module 111, which is used to receive the first conference call data reversely synchronized by the control unit MCU-1, and perform conference reconstruction to maintain the connection between the terminal ep and the control unit MCU-1 based on the first conference call;

[0089] The hybrid access device Hybrid-Access is used to import the second type of conference call data newly generated by the terminal ep after the intranet video conferencing system 102 is disconnected from the public network video conferencing system 101 into the hybrid signaling device Hybrid-SIG;

[0090] The hybrid signaling device Hybrid-SIG includes an intranet conference new creation module 121, which is used to initiate signaling control to the terminal ep and the control unit MCU-1 to establish a new connection between the terminal ep and the control unit MCU-1 based on the second conference call.

[0091] Before the intranet video conference system 102 is disconnected from the public network video conference system 101,

[0092] The hybrid access device Hybrid-Access is also used to import the first conference call data into the access device Access;

[0093] The hybrid signaling device Hybrid-SIG further includes a hot standby module 131, which is used to perform a data-free hot standby operation;

[0094] The access device Access is used to send the first conference call data to the signaling device SIG;

[0095] The signaling device SIG includes a public network conference creation module 112. For the first type of newly generated conference call, the public network conference creation module 112 is used to initiate signaling control on the terminal ep and the control unit MCU-1 to establish a connection between the terminal ep and the control unit MCU-1;

[0096] The signaling device SIG further comprises a conference holding module 122. For the first type of conference call that has been established, the conference holding module 122 is used to maintain the connection between the terminal ep and the control unit MCU-1.

[0097] The signaling device SIG includes a judgment module 132, which is used to judge the legitimacy of the conference call, and if it is legal, establish the first conference call, otherwise refuse to establish the first conference call;

[0098] The intranet conference creation module 121 of the hybrid signaling device Hybrid-SIG includes a basic conference control submodule, which is used to initiate signaling control on the terminal ep and the control unit MCU-1 to establish a new connection between the terminal ep and the control unit MCU-1 based on the second conference call, establish the second conference call regardless of whether the conference call is legal, and only provide basic conference control functions.

[0099] When the intranet video conference system 102 is connected to the public network video conference system 101,

[0100] The conference holding module 122 maintains the connection between the terminal ep and the control unit MCU-1 based on the first conference call data saved before the connection is restored;

[0101] The hybrid access device Hybrid-Access is further used to import the second type of conference call data into the access device Access, and the access device Access is further used to send the second type of conference call data to the signaling device SIG;

[0102] The hybrid signaling device Hybrid-SIG further includes a conference disconnection module 141, which is used to disconnect the second conference call and notify the terminal ep of the second conference call to re-call the conference;

[0103] The judging module 132 of the signaling device SIG is further used to judge whether the re-called second conference call is legal, and if legal, re-establish the connection between the terminal ep and the control unit MCU-1 based on the second conference call.

[0104] otherwise, refusing to re-establish the connection between the terminal ep and the control unit MCU-1 based on the second conference call, and deleting the corresponding second conference call data imported into the signaling device SIG;

[0105] The hybrid signaling device Hybrid-SIG further includes a clearing module 151, which is used to clear all conference call data.

[0106] The determination module 132 includes a determination existence submodule, a determination authority submodule and a determination verification submodule, wherein:

[0107] The existence determination submodule is used to determine whether the conference number exists;

[0108] The authority determination submodule is used to determine whether the terminal ep number calling the conference number has the authority to join the conference room corresponding to the conference number;

[0109] The verification submodule is used to determine whether the conference entry verification operation of the terminal ep calling the conference number is successful.

[0110] The signaling device SIG also includes an inquiry module 142, which is used to inquire whether the connected terminal ep is online at regular intervals:

[0111] When the intranet video conferencing system 102 is connected to the public network video conferencing system 101, if the terminal ep is online, the connection between the terminal ep and the control unit MCU-1 is maintained; if some of the terminals ep are offline, the connection between the offline terminal ep and the control unit MCU-1 is disconnected, and the conference call data corresponding to the offline terminal ep is cleared;

[0112] When the query module 142 determines that all terminals ep in the intranet video conferencing system 102 are offline at the same time, it is considered that the intranet video conferencing system 102 is disconnected from the public network video conferencing system 101, and is used to maintain the conference call data corresponding to the offline terminal ep until the intranet video conferencing system 102 is connected to the public network video conferencing system 101.

[0113] The basic conference control submodule is used to regard all the numbers of the second conference call as the conference number, establish a conference room based on the conference number, and add all the terminals ep that call the conference number to the established conference room.

[0114] The control unit MCU-1 is used to synchronize the established first conference call data to the conference reconstruction module 111;

[0115] The conference reestablishment module 111 is used to maintain the connection between the terminal ep and the control unit MCU-1 based on the first conference call based on the received first conference call data.

[0116] It should be noted that although the operations of the calling method in the hybrid cloud video conferencing system of the present invention are described in a specific order in the accompanying drawings, this does not require or imply that the operations must be performed in this specific order, or that all the operations shown must be performed to achieve the desired results. Additionally or alternatively, some steps may be omitted, multiple steps may be combined into one step, and / or one step may be decomposed into multiple steps.

[0117] In addition, although several devices, units, or modules of the hybrid cloud video conferencing system are mentioned in the above detailed description, this division is only exemplary and not mandatory. In fact, according to an embodiment of the present invention, the features and functions of two or more modules described above can be concretized in one module. Conversely, the features and functions of one module described above can be further divided into multiple modules for concretization.

[0118] Although the spirit and principle of the present invention have been described with reference to several specific embodiments, it should be understood that the present invention is not limited to the disclosed specific embodiments, and the division of various aspects does not mean that the features in these aspects cannot be combined to benefit, and such division is only for the convenience of expression. The present invention is intended to cover various modifications and equivalent arrangements included in the spirit and scope of the attached claims.

[0119] The present invention provides:

[0120] 1. A calling method in a hybrid cloud video conferencing system, characterized in that the hybrid cloud video conferencing system includes an intranet video conferencing system and a public network video conferencing system, wherein the intranet video conferencing system includes interconnected terminals, a hybrid signaling device, a hybrid access device and a control unit, and the method includes:

[0121] When the intranet video conferencing system is connected to the public network video conferencing system, a first conference call is established between the terminal and the control unit through the public network video conferencing system;

[0122] When the intranet video conferencing system is disconnected from the public network video conferencing system,

[0123] The hybrid signaling device receives the first conference call data reversely synchronized by the control unit and performs conference reconstruction to maintain the connection between the terminal and the control unit based on the first conference call;

[0124] The second type of conference call data newly generated by the terminal after the intranet video conferencing system is disconnected from the public network video conferencing system is imported into the hybrid signaling device through the hybrid access device, and the hybrid signaling device initiates signaling control on the terminal and the control unit to establish a new connection between the terminal and the control unit based on the second type of conference call.

[0125] 2. The calling method according to item 1 is characterized in that the public network video conferencing system includes an access device and a signaling device, and the method further includes:

[0126] Before the intranet video conferencing system is disconnected from the public network video conferencing system,

[0127] The first type of conference call data is imported into the access device via the hybrid access device;

[0128] The hybrid signaling device performs a data-free hot standby operation;

[0129] The access device sends the first conference call data to the signaling device;

[0130] For the newly generated first conference call, the signaling device initiates signaling control on the terminal and the control unit to establish a connection between the terminal and the control unit;

[0131] For the first conference call that has been established, the signaling device maintains the connection between the terminal and the control unit.

[0132] 3. The calling method according to item 1 or 2 is characterized in that the step of establishing the first conference call between the terminal and the control unit through the public network video conferencing system includes determining the legitimacy of the conference call, and establishing the first conference call if it is legitimate, otherwise refusing to establish the first conference call;

[0133] The hybrid signaling device initiates signaling control on the terminal and the control unit to establish a new connection between the terminal and the control unit based on the second conference call, establishes the second conference call regardless of whether the conference call is legal, and only provides basic conference control functions.

[0134] 4. The calling method according to any one of items 1 to 3, characterized in that the method further comprises:

[0135] When the intranet video conferencing system is connected to the public network video conferencing system,

[0136] The signaling device maintains the connection between the terminal and the control unit based on the first conference call data saved before the connection is restored;

[0137] The second type of conference call data is introduced into the access device through the hybrid access device, and the access device sends the second type of conference call data to the signaling device;

[0138] disconnecting the second conference call and notifying the terminals of the second conference call to re-call the conference;

[0139] The signaling device determines whether the re-called second conference call is legal, and if legal, re-establishes the connection between the terminal and the control unit based on the second conference call,

[0140] otherwise, refusing to re-establish the connection between the terminal and the control unit based on the second conference call, and deleting the second conference call data imported into the signaling device;

[0141] The hybrid signaling device clears all conference call data.

[0142] 5. The calling method according to item 3 or 4, characterized in that the step of determining the legitimacy of the conference call comprises:

[0143] Determine whether the meeting number exists;

[0144] Determine whether the terminal number calling the conference number has the authority to join the conference room corresponding to the conference number; and / or

[0145] Determine whether the conference entry verification operation of the terminal calling the conference number is successful.

[0146] 6. The calling method according to any one of items 1 to 5, characterized in that the method further comprises the signaling device inquiring whether the connected terminal is online at regular intervals:

[0147] When the intranet video conferencing system is connected to the public network video conferencing system, if the terminal is online, the connection between the terminal and the control unit is maintained; if some of the terminals are offline, the connection between the offline terminal and the control unit is disconnected, and the conference call data corresponding to the offline terminal is cleared;

[0148] If the signaling device determines that all terminals in the intranet video conferencing system are offline at the same time, it is considered that the intranet video conferencing system is disconnected from the public network video conferencing system, and the conference call data corresponding to the offline terminals is maintained until the intranet video conferencing system is restored to the public network video conferencing system.

[0149] 7. The calling method according to item 3 is characterized in that the step of establishing the second conference call regardless of whether the conference call is legal comprises:

[0150] All the numbers of the second conference call are considered as conference numbers, and a conference room is established based on the conference number, and all the terminals calling the conference number are added to the established conference room.

[0151] 8. The calling method according to any one of items 1 to 7 is characterized in that the step of the hybrid signaling device receiving the first conference call data reversely synchronized by the control unit and reestablishing the conference to maintain the connection between the terminal and the control unit based on the first conference call specifically includes:

[0152] The control unit synchronizes the established first conference call data to the hybrid signaling device;

[0153] The hybrid signaling device maintains the connection between the terminal and the control unit based on the first conference call based on the received first conference call data.

[0154] 9. A hybrid cloud video conferencing system, characterized in that the hybrid cloud video conferencing system includes an intranet video conferencing system and a public network video conferencing system, wherein the intranet video conferencing system includes interconnected terminals, a hybrid signaling device, a hybrid access device and a control unit, wherein:

[0155] When the intranet video conferencing system is connected to the public network video conferencing system, the public network video conferencing system is used to establish a first conference call between the terminal and the control unit;

[0156] When the intranet video conferencing system is disconnected from the public network video conferencing system,

[0157] The hybrid signaling device includes a conference reconstruction module, which is used to receive the first conference call data reversely synchronized by the control unit and perform conference reconstruction to maintain the connection between the terminal and the control unit based on the first conference call;

[0158] The hybrid access device is used to import the second type of conference call data newly generated by the terminal after the intranet video conferencing system is disconnected from the public network video conferencing system into the hybrid signaling device;

[0159] The hybrid signaling device includes an intranet conference creation module, which is used to initiate signaling control on the terminal and the control unit to establish a new connection between the terminal and the control unit based on the second conference call.

[0160] 10. The hybrid cloud video conferencing system according to item 9 is characterized in that the public network video conferencing system includes an access device and a signaling device:

[0161] Before the intranet video conferencing system is disconnected from the public network video conferencing system,

[0162] The hybrid access device is also used to import the first conference call data into the access device;

[0163] The hybrid signaling device further includes a hot standby module 131, which is used to perform a data-free hot standby operation;

[0164] The access device is used to send the first conference call data to the signaling device;

[0165] The signaling device includes a public network conference creation module, and for the newly generated first type of conference call, the public network conference creation module is used to initiate signaling control on the terminal and the control unit to establish a connection between the terminal and the control unit;

[0166] The signaling device further comprises a conference holding module, and for the first type of conference call that has been established, the conference holding module is used to maintain the connection between the terminal and the control unit.

[0167] 11. The hybrid cloud video conferencing system according to item 9 or 10, characterized in that the signaling device includes a judgment module, which is used to judge the legitimacy of the conference call, and if it is legal, establish the first conference call, otherwise refuse to establish the first conference call;

[0168] The new intranet conference creation module of the hybrid signaling device includes a basic conference control submodule, which is used to initiate signaling control on the terminal and the control unit to establish a new connection between the terminal and the control unit based on the second conference call, establish the second conference call regardless of whether the conference call is legal, and only provide basic conference control functions.

[0169] 12. The hybrid cloud video conferencing system according to any one of items 9 to 11, characterized in that:

[0170] When the intranet video conferencing system is connected to the public network video conferencing system,

[0171] The conference holding module maintains the connection between the terminal and the control unit based on the first conference call data saved before the connection is restored;

[0172] The hybrid access device is further used to import the second type of conference call data into the access device, and the access device is further used to send the second type of conference call data to the signaling device;

[0173] The hybrid signaling device further comprises a conference disconnection module, which is used to disconnect the second type of conference call and notify the terminal of the second type of conference call to re-call the conference;

[0174] The judgment module of the signaling device is further used to judge whether the re-called second conference call is legal, and if it is legal, re-establish the connection between the terminal and the control unit based on the second conference call,

[0175] otherwise, refusing to re-establish the connection between the terminal and the control unit based on the second conference call, and deleting the corresponding second conference call data imported into the signaling device;

[0176] The hybrid signaling device further comprises a clearing module, which is used to clear all conference call data.

[0177] 13. The hybrid cloud video conferencing system according to item 11 or 12, characterized in that the judgment module includes a judgment existence submodule, a judgment authority submodule and a judgment verification submodule, wherein:

[0178] The existence determination submodule is used to determine whether the conference number exists;

[0179] The authority determination submodule is used to determine whether the terminal number calling the conference number has the authority to join the conference room corresponding to the conference number;

[0180] The verification submodule is used to determine whether the conference entry verification operation of the terminal calling the conference number is successful.

[0181] 14. The hybrid cloud video conferencing system according to any one of items 9 to 13, characterized in that the signaling device further comprises an inquiry module, which is used to inquire whether the connected terminal is online at regular intervals:

[0182] When the intranet video conferencing system is connected to the public network video conferencing system, if the terminal is online, the connection between the terminal and the control unit is maintained; if some of the terminals are offline, the connection between the offline terminal and the control unit is disconnected, and the conference call data corresponding to the offline terminal is cleared;

[0183] When the query module determines that all terminals in the intranet video conferencing system are offline at the same time, it is considered that the intranet video conferencing system is disconnected from the public network video conferencing system, and is used to maintain the conference call data corresponding to the offline terminals until the intranet video conferencing system is restored to the public network video conferencing system.

[0184] 15. The hybrid cloud video conferencing system according to item 11 is characterized in that the basic conference control submodule is used to consider all the numbers of the second conference calls as conference numbers, and establish a conference room based on the conference number, and add all terminals that call the conference number to the established conference room.

[0185] 16. The hybrid cloud video conferencing system according to any one of items 9 to 15, characterized in that:

[0186] The control unit is used to synchronize the established first conference call data to the conference reconstruction module;

[0187] The conference reestablishment module is used to maintain the connection between the terminal and the control unit based on the first conference call based on the received first conference call data.

Claims

1. A calling method in a hybrid cloud video conferencing system, characterized in that: The hybrid cloud video conferencing system includes an intranet video conferencing system and a public network video conferencing system, wherein the public network video conferencing system includes an access device and a signaling device, and the intranet video conferencing system includes interconnected terminals, a hybrid signaling device, a hybrid access device, and a control unit, and the method includes: When the intranet video conferencing system is connected to the public network video conferencing system, a first conference call is established between the terminal and the control unit through the public network video conferencing system; Before the intranet video conferencing system is disconnected from the public network video conferencing system, The first type of conference call data is imported into the access device via the hybrid access device; The hybrid signaling device performs a data-free hot standby operation; The access device sends the first conference call data to the signaling device; For the newly generated first conference call, the signaling device initiates signaling control on the terminal and the control unit to establish a connection between the terminal and the control unit; For the first conference call that has been established, the signaling device maintains the connection between the terminal and the control unit; When the intranet video conferencing system is disconnected from the public network video conferencing system, The hybrid signaling device receives the first conference call data reversely synchronized by the control unit and performs conference reconstruction to maintain the connection between the terminal and the control unit based on the first conference call; The second type of conference call data newly generated by the terminal after the intranet video conferencing system is disconnected from the public network video conferencing system is imported into the hybrid signaling device through the hybrid access device, and the hybrid signaling device initiates signaling control on the terminal and the control unit to establish a new connection between the terminal and the control unit based on the second type of conference call.

2. The calling method according to claim 1, characterized in that: The step of establishing a first conference call between the terminal and the control unit through the public network video conferencing system includes determining the legitimacy of the conference call, establishing the first conference call if it is legitimate, and refusing to establish the first conference call otherwise; The hybrid signaling device initiates signaling control on the terminal and the control unit to establish a new connection between the terminal and the control unit based on the second conference call, establishes the second conference call regardless of whether the conference call is legal, and only provides basic conference control functions.

3. The calling method according to claim 2, characterized in that: The method further comprises: When the intranet video conferencing system is connected to the public network video conferencing system, The signaling device maintains the connection between the terminal and the control unit based on the first conference call data saved before the connection is restored; The second type of conference call data is introduced into the access device through the hybrid access device, and the access device sends the second type of conference call data to the signaling device; disconnecting the second conference call and notifying the terminals of the second conference call to re-call the conference; The signaling device determines whether the re-called second conference call is legal, and if legal, re-establishes the connection between the terminal and the control unit based on the second conference call, otherwise, refusing to re-establish the connection between the terminal and the control unit based on the second conference call, and deleting the second conference call data imported into the signaling device; The hybrid signaling device clears all conference call data.

4. The calling method according to claim 3, characterized in that: The step of judging the legitimacy of the conference call includes: Determine whether the meeting number exists; Determine whether the terminal number calling the conference number has the authority to join the conference room corresponding to the conference number; and / or Determine whether the conference entry verification operation of the terminal calling the conference number is successful.

5. The calling method according to claim 1, characterized in that: The method further includes the signaling device asking the connected terminal whether it is online at regular intervals: When the intranet video conferencing system is connected to the public network video conferencing system, if the terminal is online, the connection between the terminal and the control unit is maintained; if some of the terminals are offline, the connection between the offline terminal and the control unit is disconnected, and the conference call data corresponding to the offline terminal is cleared; If the signaling device determines that all terminals in the intranet video conferencing system are offline at the same time, it is considered that the intranet video conferencing system is disconnected from the public network video conferencing system, and the conference call data corresponding to the offline terminals is maintained until the intranet video conferencing system is restored to the public network video conferencing system.

6. The calling method according to claim 2, characterized in that: The step of establishing the second conference call regardless of whether the conference call is legal comprises: All the numbers of the second conference call are considered as conference numbers, and a conference room is established based on the conference number, and all the terminals calling the conference number are added to the established conference room.

7. The calling method according to claim 1, characterized in that: The steps of the hybrid signaling device receiving the first conference call data reversely synchronized by the control unit and reestablishing the conference to maintain the connection between the terminal and the control unit based on the first conference call specifically include: The control unit synchronizes the established first conference call data to the hybrid signaling device; The hybrid signaling device maintains the connection between the terminal and the control unit based on the first conference call based on the received first conference call data.

8. A hybrid cloud video conferencing system, characterized in that: The hybrid cloud video conferencing system includes an intranet video conferencing system and a public network video conferencing system, wherein the public network video conferencing system includes an access device and a signaling device, and the intranet video conferencing system includes interconnected terminals, a hybrid signaling device, a hybrid access device and a control unit, wherein: When the intranet video conferencing system is connected to the public network video conferencing system, the public network video conferencing system is used to establish a first conference call between the terminal and the control unit; Before the intranet video conferencing system is disconnected from the public network video conferencing system, The hybrid access device is also used to import the first conference call data into the access device; The hybrid signaling device also includes a hot standby module, which is used to perform a data-free hot standby operation; The access device is used to send the first conference call data to the signaling device; The signaling device includes a public network conference creation module, and for the newly generated first type of conference call, the public network conference creation module is used to initiate signaling control on the terminal and the control unit to establish a connection between the terminal and the control unit; The signaling device further includes a conference holding module, and for the first type of conference call that has been established, the conference holding module is used to maintain the connection between the terminal and the control unit; When the intranet video conferencing system is disconnected from the public network video conferencing system, The hybrid signaling device includes a conference reconstruction module, which is used to receive the first conference call data reversely synchronized by the control unit and perform conference reconstruction to maintain the connection between the terminal and the control unit based on the first conference call; The hybrid access device is used to import the second type of conference call data newly generated by the terminal after the intranet video conferencing system is disconnected from the public network video conferencing system into the hybrid signaling device; The hybrid signaling device includes an intranet conference creation module, which is used to initiate signaling control on the terminal and the control unit to establish a new connection between the terminal and the control unit based on the second conference call.

9. The hybrid cloud video conferencing system according to claim 8, characterized in that: The signaling device includes a judgment module, which is used to judge the legality of the conference call. If it is legal, the first type of conference call is established, otherwise the first type of conference call is refused to be established; the intranet conference creation module of the hybrid signaling device includes a basic conference control submodule, which is used to initiate signaling control to the terminal and the control unit to establish a new connection between the terminal and the control unit based on the second type of conference call. Regardless of whether the conference call is legal, the second type of conference call is established, and only basic conference control functions are provided.

10. The hybrid cloud video conferencing system according to claim 9, characterized in that: When the intranet video conferencing system is connected to the public network video conferencing system, The conference holding module maintains the connection between the terminal and the control unit based on the first conference call data saved before the connection is restored; The hybrid access device is further used to import the second type of conference call data into the access device, and the access device is further used to send the second type of conference call data to the signaling device; The hybrid signaling device further comprises a conference disconnection module, which is used to disconnect the second type of conference call and notify the terminal of the second type of conference call to re-call the conference; The judgment module of the signaling device is further used to judge whether the re-called second conference call is legal, and if so, re-establish the connection between the terminal and the control unit based on the second conference call; otherwise, refuse to re-establish the connection between the terminal and the control unit based on the second conference call, and delete the corresponding second conference call data imported into the signaling device; The hybrid signaling device further comprises a clearing module, which is used to clear all conference call data.

11. The hybrid cloud video conferencing system according to claim 10, characterized in that: The judgment module includes a judgment existence submodule, a judgment authority submodule and a judgment verification submodule, wherein: The existence determination submodule is used to determine whether the conference number exists; The authority determination submodule is used to determine whether the terminal number calling the conference number has the authority to join the conference room corresponding to the conference number; The verification submodule is used to determine whether the conference entry verification operation of the terminal calling the conference number is successful.

12. The hybrid cloud video conferencing system according to claim 8, characterized in that: The signaling device also includes an inquiry module, which is used to inquire whether the connected terminal is online at regular intervals: When the intranet video conferencing system is connected to the public network video conferencing system, if the terminal is online, the connection between the terminal and the control unit is maintained; if some of the terminals are offline, the connection between the offline terminal and the control unit is disconnected, and the conference call data corresponding to the offline terminal is cleared; When the query module determines that all terminals in the intranet video conferencing system are offline at the same time, it is considered that the intranet video conferencing system is disconnected from the public network video conferencing system, and is used to maintain the conference call data corresponding to the offline terminals until the intranet video conferencing system is restored to the public network video conferencing system.

13. The hybrid cloud video conferencing system according to claim 9, characterized in that: The basic conference control submodule is used to regard all the numbers of the second conference call as the conference number, establish a conference room based on the conference number, and add all the terminals calling the conference number to the established conference room.

14. The hybrid cloud video conferencing system according to claim 8, characterized in that: The control unit is used to synchronize the established first conference call data to the conference reconstruction module; The conference reestablishment module is used to maintain the connection between the terminal and the control unit based on the first conference call based on the received first conference call data.

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