CN100542265C - Virtual MCU, video communication system and virtual MCU configuration, changing method - Google Patents
Virtual MCU, video communication system and virtual MCU configuration, changing method Download PDFInfo
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- CN100542265C CN100542265C CNB2007100647187A CN200710064718A CN100542265C CN 100542265 C CN100542265 C CN 100542265C CN B2007100647187 A CNB2007100647187 A CN B2007100647187A CN 200710064718 A CN200710064718 A CN 200710064718A CN 100542265 C CN100542265 C CN 100542265C
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Abstract
The invention discloses a kind of virtual MCU, comprise main frame MCU and standby host MCU; Active and standby machine MCU has physical port and virtual port respectively, and main frame MCU sets up the control channel and the media channel of video conference by virtual port; Connect by physical port between the active and standby machine MCU, be used for standby host MCU under the situation that detects main frame MCU inefficacy, by switching the control that obtains described video conference.The invention also discloses a kind of video communication system, a kind of virtual MCU collocation method and a kind of virtual MCU changing method.By virtual MCU disclosed by the invention, system and method, improved the switch speed of the active and standby machine of MCU, and the use experience of having optimized the user.
Description
Technical field
The present invention relates to network communications technology field, particularly a kind of virtual multipoint control unit (Multipoint Control Unit, be called for short MCU), a kind of video communication system based on this virtual MCU, a kind of collocation method of realizing this virtual MCU two-node cluster hot backup function, and a kind of changing method of realizing this virtual MCU two-node cluster hot backup function.
Background technology
Along with the development of the network communications technology, the video terminal that disperses on the geography can be realized truly, exchange intuitively by video conferencing system.So-called video conferencing system, be based on the application system that the network communications technology realizes the video virtual meeting, by multiple mode exchange of information such as figure, sound, support terminal carries out the real time information interchange at a distance, shares and carries out collaborative work, for remote teaching and teleconference very important effect is arranged.Video conferencing system mainly is made up of entities such as MCU, gateway, gatekeeper's (Gatekeeper is called for short GK) and video terminals; Wherein, video terminal can be supported video, voice and the network communications technology, and functions such as video acquisition and playback are provided, and the user realizes that by this video terminal visual interchange exchanges with sound, data; GK is used for carrying out user's management control, such as providing user management, terminal name to resolve and the control load equilibrium; MCU provides protocol analysis, creates the virtual conference room, carries out conference management and transmit audio frequency, video and data between the participant; Gateway is used to MCU that the signalling route forwarding capability is provided.
As can be seen, MCU is the key equipment that guarantees that the multiple terminals virtual meeting is held, and therefore, if in the process that video conference is held, MCU will be because fault or other fortuitous event can't continue operate as normal the time, will cause the interruption of video conference.In order to address this problem, provide a kind of double-machine standby technology in the prior art.
Double-machine standby technology is simple, and two active and standby each other machines of MCU are set exactly, and video conference holds that two equipment all start in the process, and main frame is born video conference establishment, management and information transmission work; Then when main frame MCU can't continue operate as normal because of fortuitous event, system can back up switching automatically, replaced main frame MCU to continue to hold a meeting by standby host MCU.Thereby, guarantee carrying out smoothly of video conference not needing standby host MCU carried out again to realize the active and standby switching of MCU under the situation that meeting is provided with.Referring to Fig. 1, for using an exemplary video networking communication system embodiment of MCU double-machine standby technology in the prior art: use two MCU, one is host mode, one is the standby host pattern, under the normal condition, carry out video conference control by main frame MCU, be connected by TCP between main frame MCU and the standby host MCU and carry out state-detection and synchronization video conferencing information; After main frame MCU lost efficacy, the conference administrator logined standby host MCU again, called out the terminal that participates in a conference again and realized reassembling of meeting, and carry out meeting control by standby host.
In above-mentioned active and standby handoff procedure, because the IP address of active and standby machine is inequality, therefore original control channel and media channel all must be rebuild, and inevitable requirement conference administrator lands a MCU again and calls a meeting again.With the video conferencing system that adopts common H323 agreement is example, set up correspondence between the H323 end points, comprise initially convene and active and standby switching after reassemble, all will experience following process: each end points comprises that MCU, video terminal all need to register to GK; When holding or again during holding video conference, the keeper logins a MCU, MCU asks the TCP address of the H.225 channel of each video terminal at first to the gatekeeper, and H.225 MCU is connected according to setting up between this TCP address and each video terminal then, finally sets up H.245 control channel and media channel; Wherein, H.225 be call signaling protocol, be used for two H.323 call setups between the entity, H.245 be the medium control protocol, be used for media channel control, finish foundation, maintenance and the release of each logical channel in the multimedia communication.As can be seen, active and standby handover scheme of the prior art will inevitably cause active and standby switching time longer owing to need reassemble meeting, and whole handoff procedure approximately needs 45 seconds; Simultaneously also brought bad use experience to the user.
Therefore, if can will improve switching efficiency, improve user's use experience, but such technical scheme is not provided in the prior art without the process that reassembles when the active and standby switching of MCU.
Summary of the invention
The purpose of this invention is to provide a kind of virtual MCU, a kind of video communication system, a kind of virtual MCU collocation method, and a kind of virtual MCU changing method solve in the prior art long, the bad problem of user's use experience active and standby switching time of MCU.
For achieving the above object, embodiments of the invention provide a kind of virtual MCU, comprise main frame MCU and standby host MCU; Described active and standby machine MCU has physical port and virtual port respectively, and the virtual ip address and the virtual mac address of described active and standby machine MCU virtual port are identical; Described main frame MCU sets up video conference by described virtual port; Connect by physical port between the described active and standby machine MCU, be used for described standby host MCU under the situation that detects described main frame MCU inefficacy, by switching the control that obtains described video conference.
Embodiments of the invention also provide a kind of video communication system, comprise video terminal, gateway and gatekeeper, also comprise virtual MCU, are connected in communication network by gateway and video terminal and gatekeeper; The establishment that the main frame MCU of described virtual MCU is used to protocol analysis to be provided and to carry out video conference, administer and maintain; The standby host MCU of described virtual MCU is used under the situation that detects described main frame MCU inefficacy, by switching the control that obtains described video conference.
Embodiments of the invention also provide a kind of virtual MCU collocation method, may further comprise the steps: the physical port of each MCU is configured to the IP address of the same network segment, and virtual port is configured to identical virtual ip address and virtual mac address; One main frame MCU is set and sets up being connected of described main frame MCU and other standby hosts MCU.
Embodiments of the invention also provide a kind of virtual MCU changing method, may further comprise the steps: after virtual MCU received access instruction to virtual ip address, described main frame MCU used virtual ip address and the video terminal that participates in video conference to communicate; When standby host MCU detects main frame MCU inefficacy, by switching the control that obtains described video conference.
As shown from the above technical solution, the present invention has following beneficial effect by active and standby MCU is virtual for a MCU externally provides function:
1, standby host MCU is equipped with directly catcher of switching by heat, thereby need not to reassemble the current video meeting, has improved switch speed;
2, Unsupervised member logins standby host MCU again, and video conference can not interrupted yet, and has optimized user's use experience.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is the networking schematic diagram of video communication system in the prior art;
Fig. 2 is the block diagram of an embodiment of virtual MCU provided by the present invention;
Fig. 3 is the block diagram of another embodiment of virtual MCU provided by the present invention;
Fig. 4 is the block diagram of an embodiment of video communication system provided by the present invention;
Fig. 5 is the flow chart of an embodiment of virtual MCU collocation method provided by the present invention;
Fig. 6 is the flow chart of an embodiment of virtual MCU changing method provided by the present invention.
Embodiment
In order to overcome in the prior art, active and standby MCU switches must reassemble the long and not good defective of use experience of time that video conference causes, the present invention passes through virtual MCU and convenes and the control of video meeting, below just to this virtual MCU, based on the changing method of the video communication system of this virtual MCU, this virtual MCU and in video communication system the changing method of virtual MCU be elaborated.
Referring to Fig. 2, the block diagram for an embodiment of virtual MCU 1 provided by the present invention comprises MCU11 and MCU12, and these two MCU11 and 12 were designated as main frame and standby host respectively before enabling the two-node cluster hot backup function; Main frame MCU11 has physical port 111 and virtual port 112, and standby host MCU12 has physical port 121 and virtual port 122.
Wherein, owing to have only two MCU under the same network segment could be by same gateway addressing, therefore the IP address of physical port 111 and 121 correspondences is set as the same network segment, IP address such as physical port 111 correspondences is 10.10.10.2/24, and the IP address of physical port 121 correspondences is 10.10.10.3/24; Simultaneously, for fear of the two-shipper handoff procedure video conference is impacted, the switching that need make two MCU is to the video terminal transparence, i.e. angle by video terminal, can not find that the MCU that communicates by letter changes, therefore, virtual port 112 and 122 is provided with identical virtual ip address (such as 10.10.10.1/24) and virtual mac address (such as 00:00:00:01:02:03), like this, no matter be the control that MCU11 or MCU12 carry out video conference, for video terminal, be equivalent to use the MCU of virtual ip address and virtual mac address to communicate with one always, can not discover the switching whether virtual MCU inside takes place.
After the network equipment (such as gateway) is received access instruction to virtual MCU 10.10.10.1/24, just send an address resolution protocol (Address Resolution Protocol, be called for short ARP) broadcast packet, such as " I am network equipment xxx.xxx.xxx.xxx; MAC is xxxxxxxxxxx, and IP is your MAC that the main frame of 10.10.10.1/24 please be accused "; In the present embodiment, though the virtual IP address correspondence two MCU, owing to distinguished main frame and standby host, therefore replying ARP by main frame 11 broadcasts as " I am 10.10.10.1/24, and my mac is 00:00:00:01:02:03 "; Receive the network equipment of replying and refresh the ARP list item, the visit that any form of network equipment reception is afterwards pointed to this virtual ip address all sends to MCU11, promoter for other visits, known to only to be an IP address be the virtual MCU 1 of this virtual IP address, and in fact, be to have set up video conference by its virtual port 112, comprise control channel and the media channel of setting up video conference by main frame MCU11.
In virtual MCU 1 inside, be connected with 121 by physical port 111 between the active and standby machine MCU11 and 12, be used for standby host MCU12 main frame MCU11 is carried out state-detection and information synchronization so that prepare for follow-up switching, and under the situation that detects described main frame MCU11 inefficacy, by the control channel and the media channel of switching controls video conference, realize control to video conference.This process is as follows: when main frame MCU11 lost efficacy, can't receive the visit that the network equipment sends, simultaneously, when standby host MCU12 detects main frame MCU11 inefficacy, just alternative MCU11 replys ARP and broadcasts as " I am 10.10.10.1/24, and my MAC is 00:00:00:01:02:03 "; Receive the network equipment of replying and refresh the ARP list item, the visit that any form of network equipment reception is afterwards pointed to this virtual ip address all sends to MCU12.Because the synchronous information of MCU12 and MCU11 comprises the address of control information such as control channel and the address of media channel, and video conference information is as audio/video encoding/decoding of the terminal that participates in a conference, meeting bandwidth, meeting etc., therefore acquire the right of control successfully, become new main frame MCU, carry on an agreement and resolve and the video conference control and management.Concrete, state-detection can send heartbeat message to standby host MCU by main frame MCU and realize, also can be that standby host MCU active detecting main frame MCU state is realized, can not constitute influence to technical scheme of the present invention; Simultaneously, in order to realize the synchronous of information, can in active and standby machine MCU, the synchronization module (not shown) be set, the synchronization module of described active and standby machine MCU is connected with 121 by described physical port 111, be used for standby host MCU from main frame MCU synchronically controlling information and video conference information, this synchronization module can be provided with separately, also can be used as functional block and is realized by the processing unit of active and standby machine.
As can be seen, by this virtual MCU embodiment, two MCU are invented a virtual MCU and video terminal communicates, when host fails, standby host can be taken over the control channel of holding a meeting and the control of media channel at once, becomes the actual MCU of control of video meeting; Because control channel and media channel itself can not change, thereby need not to reassemble meeting, the keeper also need not to login again standby host; For video terminal, neither can produce the situation that meeting is interrupted, can not realize to have produced the MCU switching that what experienced is that to pass through IP be that the MCU of 10.10.10.1/24 carries out meeting control always yet.
Further, standby host MCU can be not limited to one, that is to say, virtual MCU comprises many MCU, wherein one is main frame MCU, other be standby host MCU, like this, can further improve stability, referring to Fig. 3, the block diagram for the embodiment 2 of virtual MCU 1 provided by the present invention comprises MCU11,12 and 13, MCU11 was designated as main frame before enabling the two-node cluster hot backup function, MCU12,13 becomes standby host; Main frame MCU11 has physical port 111, virtual port 112 and priority block 113, standby host MCU12 has physical port 121, virtual port 122 and priority block 123, and standby host MCU13 has physical port 131, virtual port 132 and priority block 133.Active and standby machine MCU11,12 and 13 physical ports 111,121 and 131 IP address are in the same network segment, and virtual port 112,122 is identical with 132 virtual ip address and virtual mac address; Main frame MCU11 sets up the control channel and the media channel of video conference by described virtual port 112.
Except main frame MCU11 is connected with the physical port 121,131 of standby host MCU12, MCU13 by physical port 111, be used for the standby host MCU12 and the 13 couples of main frame MCU11 carry out state-detection and control information, video conference information synchronously beyond, standby host MCU12 and the MCU13 also physical port 121 and 131 by separately are connected to each other, be used under the situation that detects described main frame MCU11 inefficacy, switching the control that obtains video conference control channel and media channel, become the actual MCU of control of video meeting by the highest standby host MCU of priority.
What this virtual MCU embodiment 2 was given is the example of two standby host MCU, but it will be appreciated by those skilled in the art that, it only is for example and not limitation, as long as according to the annexation that present embodiment provided, actual how many platform standby hosts that adopt do not influence technical scheme of the present invention.
Based on above-mentioned virtual MCU, the invention provides a kind of embodiment of video communication system,, comprise video terminal 21,22,23 and GK3 and gateway 4 referring to Fig. 4, also comprise virtual MCU 1, virtual MCU 1 is connected in communication network by gateway 4 with video terminal 21,22,23 and GK3.
Wherein virtual MCU 1 comprises main frame MCU11 and standby host MCU12 again, the establishment that the main frame MCU11 of virtual MCU 1 is used to protocol analysis to be provided and to carry out video conference, administers and maintains; The standby host MCU12 of described virtual MCU 1 to main frame MCU11 carry out state-detection and control information, video conference information synchronously, be used under the situation that detects described main frame MCU11 inefficacy, by switching controls video conference control channel and media channel, thereby obtain control, become the actual MCU of control of video meeting video conference.
In conjunction with the virtual MCU that the embodiment of the invention provided, as can be seen, virtual MCU of the present invention is inner to switch the carrying out that does not influence video conference, so the video communication system that is provided can reduce active and standby switching time, and minimizing keeper's operating procedure, optimize user's use experience.
Based on above-mentioned virtual MCU, embodiments of the invention also provide a kind of virtual MCU collocation method, referring to Fig. 5, may further comprise the steps:
The physical port of steps A 1, each MCU is configured to the IP address of the same network segment, is 10.10.10.2/24 such as the IP address of main frame MCU, and the IP address of standby host MCU is 10.10.10.3/24;
The virtual port of steps A 2, each MCU is configured to identical virtual ip address and virtual mac address, is made as 10.10.10.1/24 such as virtual ip address, and virtual mac address is made as 00:00:00:01:02:03;
Steps A 3, a main frame MCU is set, is appointed as main frame MCU such as the MCU that with the IP address is 10.10.10.2/24;
Steps A 4, set up being connected of described main frame MCU and other standby hosts MCU.
By above-mentioned steps, a plurality of MCU are configured to a virtual MCU function externally is provided, the IP address of this virtual MCU is virtual ip address 10.10.10.1/24; And the configuration of steps A 4 is in order to realize the monitoring of standby host MCU for main frame MCU, so that can't take over during operate as normal at main frame MCU.Wherein, steps A 4 is set up described main frame MCU and can be specially with being connected of other standby hosts MCU:
Steps A 41, in the physical port of main frame MCU the configuration described standby host MCU IP address 10.10.10.3/24;
Steps A 42, in the physical port of standby host MCU the configuration described main frame MCU IP address 10.10.10.2/24;
Steps A 43, described active and standby machine MCU set up TCP by the IP address that disposes in the physical port and connect.
Further, under the situation that a plurality of standby host MCU are arranged, can accurately determine to switch object, present embodiment can also comprise steps A 5: set up the connection between the standby host MCU, and the priority of standby host MCU is set.
Collocation method based on above-mentioned virtual MCU, video communication system and virtual MCU, embodiments of the invention further provide virtual MCU changing method in video conference, wherein, virtual ip address is 10.10.10.1/24, virtual mac address is 00:00:00:01:02:03, the IP address of main frame MCU is 10.10.10.2/24, and the IP address of standby host MCU is 10.10.10.3/24.Referring to Fig. 6, this embodiment may further comprise the steps:
Step B1, virtual MCU receive the access instruction to virtual IP address 10.10.10.1/24, promptly when the conference administrator need hold a meeting, by virtual ip address login MCU;
Step B2, main frame MCU use virtual ip address 10.10.10.1/24 and the video terminal that participates in video conference to communicate, and the promptly actual executor who convenes video terminal to join is main frame MCU;
Concrete, can respond this access instruction for main frame MCU, virtual ip address 10.10.10.1/24 and virtual mac address 00:00:00:01:02:03 with configuration, send gratuitous ARP, refresh the ARP list item of the network equipment such as gateway, initiate any type of visit to other end points such as video terminals afterwards and all use this virtual ip address 10.10.10.1/24, so other end points are all only known the virtual MCU of an IP address for this virtual IP address.
Step B3, main frame MCU pass through IP address 10.10.10.3/24 to standby host MCU synchronous regime and information;
Wherein, described main frame MCU comprises to standby host MCU synchronous regime by the IP address: described main frame MCU periodically sends TCP heartbeat (KEEPALIVE) message, is equipped with MCU and detects the state of main MCU by intercepting these messages; Then when standby host MCU does not receive heartbeat message in setting cycle, lost efficacy for detecting main frame MCU;
Described main frame MCU comprises to standby host MCU synchronizing information by the IP address: described main frame MCU sends control information and video conference information to standby host MCU in real time or periodically; With common H323 agreement video conference is example, control information comprises the TCP address of H245 control channel and the UDP address of media channel, this control channel is used for some control informations in the transmitting conference, and this media channel is used for the audio and video data streams in the transmitting conference; Conferencing information comprises the audio/video encoding/decoding of the terminal that participates in a conference, meeting bandwidth, meeting and whether enables information such as double fluid; By synchronically controlling information and video conference information, can guarantee that when active and standby switching standby host MCU can serve as the responsibility of carrying out MCU; It is pointed out that this step be for after carry out standby host MCU switching carry out the work that information is prepared, be optional step, those skilled in the art also can adopt the other technologies means to make standby host MCU obtain control information and video conference information.
As can be seen, standby host MCU only is responsible for state and the relevant information of detection and master synchronization MCU, and conference participation does not hold.
Step B4, when standby host MCU detects main frame MCU and lost efficacy, by switching the control that obtains video conference, become the actual MCU of control of video meeting;
Such as, standby host MCU does not listen to the KEEPALIVE message that main frame MCU sends in two or three cycles, then being considered as main frame MCU lost efficacy, then virtual ip address and the virtual MAC address with configuration serves as according to sending gratuitous ARP, to refresh ARP list item and the MAC address entries in the network equipment, make follow-up conferencing data directly be transmitted to this standby host MCU;
As can be seen, standby host MCU has transferred host mode to, becomes new main frame MCU.
Especially, under the situation that has a plurality of standby host MCU, step B4 is: when standby host MCU detected main frame MCU inefficacy, the standby host MCU that priority is the highest passed through switching controls video conference control channel and media channel, thereby obtained the control to video conference.
Further, situation about restoring one's working ability for the main frame MCU that lost efficacy, also comprise step B5: when main frame MCU comes into force again, receive the synchronous state of described standby host MCU and control information and video conference information by the IP address, promptly this main frame MCU transfers the standby host pattern to, and whole system reenters the operating state of main frame-standby host.
By virtual MCU provided by the invention, video communication system, virtual MCU collocation method and virtual MCU changing method, the present invention has only related to the improvement of MCU function as can be seen, does not relate to the modification of existing protocol, and scheme is simple.Simultaneously, technical scheme provided by the present invention makes the switching of active and standby MCU transparent to all video terminals that participate in a conference, therefore standby host MCU need not to reassemble video conference after active and standby switching, does not need the keeper to login MCU again, thereby has quickened the speed of switching greatly.
It should be noted that at last: above embodiment is only in order to technical scheme of the present invention to be described but not limit it, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that: it still can make amendment or be equal to replacement technical scheme of the present invention, and these modifications or be equal to replacement and also can not make amended technical scheme break away from the spirit and scope of technical solution of the present invention.
Claims (19)
1, a kind of virtual multipoint control unit comprises main frame multipoint control unit and standby host multipoint control unit; It is characterized in that described active and standby machine multipoint control unit has physical port and virtual port respectively, and the virtual ip address and the virtual mac address of described active and standby machine multipoint control unit virtual port are identical; Described main frame multipoint control unit is set up video conference by described virtual port; Connect by physical port between the described active and standby machine multipoint control unit, be used for described standby host multipoint control unit under the situation that detects described main frame multipoint control unit inefficacy, by switching the control that obtains described video conference.
2, virtual multipoint control unit according to claim 1 is characterized in that the IP address of described active and standby machine multipoint control unit physical port is in the same network segment.
3, virtual multipoint control unit according to claim 1, it is characterized in that described active and standby machine multipoint control unit comprises synchronization module respectively, the synchronization module of described active and standby machine multipoint control unit connects by described physical port, is used for the standby host multipoint control unit from main frame multipoint control unit synchronically controlling information and video conference information.
4,, it is characterized in that described standby host multipoint control unit is one according to the arbitrary described virtual multipoint control unit of claim 1-3.
5,, it is characterized in that described standby host multipoint control unit is a plurality of, and be provided with priority block in arbitrary multipoint control unit according to the arbitrary described virtual multipoint control unit of claim 1-3; Described a plurality of standby host multipoint control unit is connected to each other by physical port separately, be used under the situation that detects described main frame multipoint control unit inefficacy, pass through to switch the control that obtains described video conference by the highest standby host multipoint control unit of priority.
6, a kind of video communication system based on the described virtual multipoint control unit of claim 5 comprises video terminal, gateway and gatekeeper, it is characterized in that also comprising virtual multipoint control unit, is connected in communication network by gateway and video terminal and gatekeeper; The establishment that the main frame multipoint control unit of described virtual multipoint control unit is used to protocol analysis to be provided and to carry out video conference, administer and maintain; The standby host multipoint control unit of described virtual multipoint control unit is used under the situation that detects described main frame multipoint control unit inefficacy, by switching the control that obtains described video conference.
7, a kind of virtual multipoint control unit collocation method based on the arbitrary described virtual multipoint control unit of claim 1-5, it is characterized in that may further comprise the steps: the physical port of each multipoint control unit is configured to the IP address of the same network segment, and virtual port is configured to identical virtual ip address and virtual mac address; One main frame multipoint control unit is set and sets up being connected of described main frame multipoint control unit and other standby host multipoint control units.
8, virtual multipoint control unit collocation method according to claim 7, it is characterized in that setting up described main frame multipoint control unit and the IP address that is specially the described standby host multipoint control unit of configuration in the physical port of main frame multipoint control unit being connected of other standby host multipoint control units, the IP address of the described main frame multipoint control unit of configuration in the physical port of standby host multipoint control unit; Described active and standby machine multipoint control unit is set up TCP by the IP address that disposes in the physical port and is connected.
9, according to claim 7 or 8 described virtual multipoint control unit collocation methods, it is characterized in that also comprising the connection of setting up between the standby host multipoint control unit, and the priority of standby host multipoint control unit is set.
10, a kind of virtual multipoint control unit changing method based on the described video communication system of claim 6, it is characterized in that may further comprise the steps: after virtual multipoint control unit received access instruction to virtual ip address, described main frame multipoint control unit used virtual ip address and the video terminal that participates in video conference to communicate; When the standby host multipoint control unit detects the inefficacy of main frame multipoint control unit, by switching the control that obtains described video conference.
11, virtual multipoint control unit changing method according to claim 10, when it is characterized in that described main frame multipoint control unit and video terminal communicate, also by the IP address to standby host multipoint control unit synchronous regime: described main frame multipoint control unit periodically sends the TCP heartbeat message; Then when the standby host multipoint control unit does not receive heartbeat message in setting cycle, lost efficacy for detecting the main frame multipoint control unit.
12, virtual multipoint control unit changing method according to claim 10, when it is characterized in that described main frame multipoint control unit and video terminal communicate, also by the IP address to standby host multipoint control unit synchronically controlling information and video conference information: described main frame multipoint control unit sends control information and video conference information to the standby host multipoint control unit in real time or periodically, and described control information comprises the TCP address of control channel and the UDP address of media channel.
13,, it is characterized in that when standby host MCU detected main frame MCU inefficacy, the standby host MCU that priority is the highest passed through to switch the control that obtains described video conference according to the arbitrary described virtual MCU changing method of claim 10-12.
14, virtual multipoint control unit changing method according to claim 10, it is characterized in that also comprising when the main frame multipoint control unit comes into force again, receive the synchronous state of described standby host multipoint control unit and control information and video conference information by the IP address.
15, a kind of video communication system based on the arbitrary described virtual multipoint control unit of claim 1-4, comprise video terminal, gateway and gatekeeper, it is characterized in that also comprising virtual multipoint control unit, be connected in communication network by gateway and video terminal and gatekeeper; The establishment that the main frame multipoint control unit of described virtual multipoint control unit is used to protocol analysis to be provided and to carry out video conference, administer and maintain; The standby host multipoint control unit of described virtual multipoint control unit is used under the situation that detects described main frame multipoint control unit inefficacy, by switching the control that obtains described video conference.
16, a kind of virtual multipoint control unit changing method based on the described video communication system of claim 15, it is characterized in that may further comprise the steps: after virtual multipoint control unit received access instruction to virtual ip address, described main frame multipoint control unit used virtual ip address and the video terminal that participates in video conference to communicate; When the standby host multipoint control unit detects the inefficacy of main frame multipoint control unit, by switching the control that obtains described video conference.
17, virtual multipoint control unit changing method according to claim 16, when it is characterized in that described main frame multipoint control unit and video terminal communicate, also by the IP address to standby host multipoint control unit synchronous regime: described main frame multipoint control unit periodically sends the TCP heartbeat message; Then when the standby host multipoint control unit does not receive heartbeat message in setting cycle, lost efficacy for detecting the main frame multipoint control unit.
18, virtual multipoint control unit changing method according to claim 16, when it is characterized in that described main frame multipoint control unit and video terminal communicate, also by the IP address to standby host multipoint control unit synchronically controlling information and video conference information: described main frame multipoint control unit sends control information and video conference information to the standby host multipoint control unit in real time or periodically, and described control information comprises the TCP address of control channel and the UDP address of media channel.
19, virtual multipoint control unit changing method according to claim 16, it is characterized in that also comprising when the main frame multipoint control unit comes into force again, receive the synchronous state of described standby host multipoint control unit and control information and video conference information by the IP address.
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| CNB2007100647187A CN100542265C (en) | 2007-03-23 | 2007-03-23 | Virtual MCU, video communication system and virtual MCU configuration, changing method |
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| CNB2007100647187A CN100542265C (en) | 2007-03-23 | 2007-03-23 | Virtual MCU, video communication system and virtual MCU configuration, changing method |
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| CN101022530A CN101022530A (en) | 2007-08-22 |
| CN100542265C true CN100542265C (en) | 2009-09-16 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101163029B (en) * | 2007-11-21 | 2010-06-16 | 杭州华三通信技术有限公司 | Multi-point control cell main-slave rearranging method and equipment |
| CN101635822B (en) * | 2008-07-26 | 2012-03-07 | 中兴通讯股份有限公司 | Method for realizing double stream automatic transmission of conference television terminal |
| CN101557498B (en) * | 2009-05-21 | 2011-03-16 | 中兴通讯股份有限公司 | Method and device for controlling videoconference terminal communication |
| US8290128B2 (en) * | 2010-06-10 | 2012-10-16 | Microsoft Corporation | Unified communication based multi-screen video system |
| CN103841356B (en) * | 2012-11-21 | 2017-10-10 | 中兴通讯股份有限公司 | A kind of video conference terminal and its self- recoverage control method and relevant device |
| CN103365746B (en) * | 2013-07-03 | 2016-12-28 | 华为技术有限公司 | A kind of synchronous method, equipment and system |
| CN104639867B (en) * | 2013-11-14 | 2019-09-27 | 南京中兴软件有限责任公司 | A kind of video conference restoration methods and system |
| CN105471598A (en) * | 2014-08-08 | 2016-04-06 | 中兴通讯股份有限公司 | Dynamic allocating method and dynamic allocating system for single boards affiliated to virtual Ethernet ports |
| CN104394351B (en) * | 2014-12-12 | 2017-10-10 | 国家电网公司 | A kind of many MCU management systems of TV conference system |
| CN106789246A (en) * | 2016-12-22 | 2017-05-31 | 广西防城港核电有限公司 | The changing method and device of a kind of active/standby server |
| CN107241565B (en) * | 2017-05-02 | 2020-03-31 | 苏州科达科技股份有限公司 | Multimedia conference system and communication method thereof |
| CN107509274B (en) * | 2017-08-30 | 2020-01-10 | 歌尔科技有限公司 | LED display control method and intelligent equipment |
| CN108055163A (en) * | 2018-01-06 | 2018-05-18 | 北京特立信电子技术股份有限公司 | A kind of dual-homed equipment and its protection switching method |
| CN109194518A (en) * | 2018-09-20 | 2019-01-11 | 天津七所精密机电技术有限公司 | A kind of Ethernet interface switching method based on dynamic IP load |
| CN110971861A (en) * | 2018-09-28 | 2020-04-07 | 中兴通讯股份有限公司 | Multi-point control unit, video conference system, conference management method, and storage medium |
| CN113888834B (en) * | 2021-10-09 | 2023-04-11 | 浙江杰翎健康科技有限公司 | Emergency alarm system in bathroom and corollary equipment and method |
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