CN101510991A - Method, apparatus and system for implementing port thermal backup of video signal conference - Google Patents
Method, apparatus and system for implementing port thermal backup of video signal conference Download PDFInfo
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- CN101510991A CN101510991A CNA2009101300483A CN200910130048A CN101510991A CN 101510991 A CN101510991 A CN 101510991A CN A2009101300483 A CNA2009101300483 A CN A2009101300483A CN 200910130048 A CN200910130048 A CN 200910130048A CN 101510991 A CN101510991 A CN 101510991A
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Abstract
The invention discloses a method of realizing interface warm standby in video conferences and equipment and system thereof. The method comprises the following steps: the multipoint control unit uses a net gape for calling video terminal to set up a main conversation connection and through the main conversation connection, the transmission of media stream is realized; the multipoint control unit uses other net gapes for calling the video terminal to set up assistant conversation connection; when the multipoint control unit detects that errors appear in the main conversation connection, channel activation signaling is sent to the video terminal through the assistant conversation connection so as to activate the assistant conversation connection to replace the main conversation connection for the transmission of media stream. In the invention, through a plurality of net gates, a main conversation connection and a plurality of assistant conversation connection are established, so when a certain connection is discontinued, the other connection can immediately replace the function of the disconnected connection to realize the quick recovery of media stream transmission between the video terminal and MCU.
Description
Technical field
The present invention relates to communication technical field, relate in particular to method, the Apparatus and system of realizing port thermal backup in a kind of video conference.
Background technology
The video conference technology has realized informix long-distance transmissions together such as voice, image, data, make people carry out utilizing the video conference technology both can hear the other side's sound when the strange land exchanges, the other side's live image and film content be can see again, cordial feeling and telepresenc that the strange land exchanges strengthened greatly.Along with the development of video conference technology, the application of video conference has also had bigger popularizing, and holds extensive video conference and becomes a reality gradually.The networking model of video conference comprises as shown in Figure 1 in the prior art: MCU (Multipoint Control Unit, multipoint control unit), MT (Meeting Teminal, video terminal) 1, MT2 and MT3.Wherein, MCU is responsible in the video conference signaling control and medium are handled, and MT is responsible in video conference the transmission of gathering, encode of the image and the sound of this video terminal, to the output of decoding from the image of other video terminals and sound.Wherein, MCU can be connected with IP network by a plurality of network interfaces, and communicates by letter with MT3 with MT1, MT2 respectively by IP network.
In video conference, MCU need connect with the video terminal of all affiliation, and transmits media data flow and give all video terminals; Join video terminal in video conference more for a long time, and MCU can connect respectively by the video terminal in a plurality of network interfaces and the heterogeneous networks.For to adopt the H.232 video conference calling procedure of standard, as shown in Figure 2, calling procedure may further comprise the steps below:
Step 201 is set up between MCU and MT and H.225 is connected, and promptly sets up MCU and is connected with calling between the MT.
H.245 step 202 is set up on connection basis H.225 and is connected, and by connection negotiation MCU and MT both sides' ability parameter H.245, and opens logical channel.
Step 203, MCU and affiliation video terminal MT set up RTP (Real-time TransportProtocol, time real host-host protocol) session, transmission RTP media stream data.
In the present video communication network, support that the MCU of Multi-netmouth can be at the different routing iinformation of each network interface configuration, when convening video-conference conference, MCU can call out the video terminal affiliation and transmit media data flow from different network interfaces, reaches the purpose of load bridging.
Present MCU network interface recovery mechanism is as shown in Figure 3: when certain network interface (for example network interface 1) when physical fault occurring, MCU can utilize other network interfaces (for example network interface 2 or network interface 3) will pass through the video terminal incoming call meeting again that the fault network interface is called out before, thereby finishes the conversation again between MCU and this video terminal.But in this process, owing to need MCU again video terminal to be called out affiliation, and this is called out the affiliation process again and makes the sound of video terminal and picture produce the long period to interrupt that the user in meeting-place, video terminal place can obviously perceive meeting and occur interrupting.
Summary of the invention
The invention provides method, the Apparatus and system of realizing port thermal backup in a kind of video conference, realize taking over seamlessly of Multi-netmouth backup, allow user's perception break down, guarantee the continuity of meeting less than network.
The invention provides the method that realizes port thermal backup in a kind of video conference, be applied to comprise that described multipoint control unit comprises at least two network interfaces, said method comprising the steps of in the system of multipoint control unit, a plurality of video terminals:
Described multipoint control unit uses a network interface to call out video terminal and sets up the master session connection, connects by described master session and carries out media flow transmission;
Described multipoint control unit uses other network interfaces to call out described video terminal and sets up session connection fully;
Described multipoint control unit detects described master session and connects and break down, and is equipped with session connection and activates signaling to described video terminal sendaisle by described, activates describedly to be equipped with session connection and to take over described master session connection and carry out media flow transmission.
Preferably, described multipoint control unit uses a network interface to call out video terminal and sets up the master session connection, specifically comprises:
Described multipoint control unit is set up the TCP passage with described video terminal, and sends the SETUP signaling to described video terminal, and H.225 foundation be connected with described video terminal;
H.245, described multipoint control unit foundation is connected with described video terminal, consults ability parameter, and opens the logical channel between described multipoint control unit and the described video terminal.
Preferably, described multipoint control unit uses other network interfaces to call out described video terminal and sets up session connection fully, specifically comprises:
Described multipoint control unit carries the SETUP signaling that backup identifies by sending to described video terminal, and described backup identifies and is used for being equipped with session connection to described video terminal indication by described being connected to of SETUP signaling foundation of carrying the backup sign;
After described video terminal obtains described backup sign, H.245 be connected by setting up with described multipoint control unit, consult ability parameter, and open logical channel between described multipoint control unit and the described video terminal, if described video terminal does not get access to described backup sign, and is then busy to described multipoint control unit answering system.
Preferably, described multipoint control unit uses other network interfaces to call out described video terminal and sets up after the session connection fully, also comprises:
Described multipoint control unit detects described session connection fully and breaks down, and continues to use other network interfaces that do not take to call out described video terminal and rebulids session connection fully.
Preferably, described multipoint control unit activates and describedly is equipped with session connection and takes over described master session and connect and carry out also comprising after the media flow transmission:
Described multipoint control unit detects the fault restoration that described master session connects, and then connects to described video terminal sendaisle by described master session and activates signaling, activates described master session and takes over described session connection fully and carry out media flow transmission.
Preferably, described multipoint control unit activates and describedly is equipped with session connection and takes over described master session and connect and carry out also comprising before the media flow transmission:
Described multipoint control unit detection is described, and session connection is normal fully.
Preferably, described multipoint control unit uses other network interfaces to call out described video terminal and sets up session connection fully, specifically comprises:
Described multipoint control unit uses other network interfaces to call out described video terminal and sets up at least two session connections fully, and described at least two priority that are equipped with session connection are set;
Described multipoint control unit activates and is equipped with session connection and takes over described master session and connect and carry out also comprising before the media flow transmission:
Described multipoint control unit is selected the described session connection that is equipped with according to described at least two priority that are equipped with session connection.
Preferably, at least two of described multipoint control unit settings are equipped with after the priority of session connection, also comprise:
Described multipoint control unit detects described at least two and is equipped with the session connection state, adjusts described at least two priority that are equipped with session connection according to described testing result.
The present invention also provides the system that realizes port thermal backup in a kind of video conference, comprises multipoint control unit, a plurality of video terminal, and described multipoint control unit comprises at least two network interfaces,
Described multipoint control unit, be used to use a network interface to call out video terminal and set up the master session connection, carry out media flow transmission by described master session connection, and use other network interfaces to call out described video terminal and set up session connection fully, connect when breaking down when detecting described master session, be equipped with session connection and activate signaling by described, activates and describedly be equipped with session connection and take over described master session connection and carry out media flow transmission to described video terminal sendaisle.
Preferably, described multipoint control unit is used to also detect whether described to be equipped with session connection normal, and is described when being equipped with session connection and breaking down when detecting, and continues to use other network interfaces that do not take to call out described video terminal and rebulids session connection fully.
Preferably, described multipoint control unit, also be used for when detecting the fault restoration that described master session connects, connect to described video terminal sendaisle by described master session and activate signaling, activate described master session and take over described session connection fully and carry out media flow transmission.
The present invention also provides the equipment of realizing port thermal backup in a kind of video conference, is applied to comprise that described multipoint control unit comprises at least two network interfaces in the system of multipoint control unit, a plurality of video terminals, and described equipment comprises:
The main connection set up module, is used to use a network interface to call out video terminal and sets up the master session connection, connects by described master session then and carries out media flow transmission;
Be equipped with to connect and set up module, be used to use other network interfaces to call out described video terminal and set up session connection fully;
Backup module, set up module and set up the module connection with described main the connection respectively with described the connection fully, be used for when described master session connection is broken down, be equipped with session connection and activate signaling by described, activates and describedly be equipped with session connection and take over described master session connection and carry out media flow transmission to described video terminal sendaisle;
Detection module is set up module and is connected with described backup module with described main the connection respectively, when being used to detect loop round-trip delay signaling between described multipoint control unit and the video terminal and losing number of times and exceed preset times, triggers described backup module.
Described master session connects and specifically comprises: the TCP passage of foundation and described video terminal, and to described video terminal transmission SETUP signaling, H.225 foundation be connected with described video terminal; And, consult ability parameter, and open the logical channel between described multipoint control unit and the described video terminal by setting up H.245 connection;
Described session connection fully specifically comprises: send the SETUP signaling of carrying the backup sign to described video terminal, described backup identifies and is used for being equipped with session connection to described video terminal indication by described being connected to of SETUP signaling foundation of carrying the backup sign, and set up with described video terminal and H.245 to be connected, consult ability parameter, open logical channel between described multipoint control unit and the video terminal.
Preferably, described detection module is also set up module and is connected with described the connection fully, is used to detect whether described to be equipped with session connection normal.
Preferably, described be equipped with to connect set up module, also is used for when described when being equipped with session connection and breaking down, and uses the network interface that does not take to call out described video terminal and rebulids and be equipped with session connection.
Preferably, described backup module during the fault restoration that also is used for connecting when described master session, connects to described video terminal sendaisle by described master session and to activate signaling, activates described master session and takes over described session connection fully and carry out media flow transmission.
Preferably, the described connection fully set up module, specifically be used to use other network interfaces to call out described video terminal and set up at least two session connections fully, described at least two priority that are equipped with session connection are set, when described master session connection is broken down, select to be equipped with session connections according to described at least two priority that are equipped with session connection.
Preferably, the described connection fully set up module, also is used for being equipped with the session connection state according to described at least two, adjusts described at least two priority that are equipped with session connection.
Compared with prior art, the present invention has the following advantages:
Among the present invention, set up a master session connection and many session connections fully by a plurality of network interfaces, when master session connected the appearance interruption, the function that interruption connects was taken in session connection immediately fully, the fast quick-recovery of the media flow transmission between realization video terminal and the MCU.Therefore, when port breaks down, guarantee that interrupting does not appear in meeting; Greatly reduce when network failure occurring, call out video terminal again and go into club's time spent.
Description of drawings
Fig. 1 is a video conference networking model schematic diagram in the prior art;
Fig. 2 is a video conference call flow diagram in the prior art;
Fig. 3 is the Multi-netmouth schematic diagram of holding a meeting in the prior art;
Fig. 4 be among the present invention MCU set up and MT between active and standby session connection set up flow chart;
Fig. 5 sets up the flow chart that is equipped with session connection between MCU and the video terminal among the present invention;
Fig. 6 is that a kind of master session connection switches to the flow chart of session connection fully among the present invention;
Fig. 7 is that a kind of session connection fully switches to the flow chart that master session connects among the present invention;
Fig. 8 is that another kind of master session connection switches to the flow chart of session connection fully among the present invention;
Fig. 9 is a structure drawing of device of realizing port thermal backup among the present invention in a kind of video conference.
Embodiment
Core thinking of the present invention is: MCU set up with MT between a master session is connected and at least one session connection fully, when master session connects interruption, be equipped with session connection and take over the master session connection of interruption immediately, realize the fast quick-recovery of the media flow transmission between MT and the MCU.
The present invention is applied on the MCU equipment in the video communication network, and the video terminal that a plurality of network interfaces by MCU and needing are called out is set up a master session and is connected with at least one and is equipped with session connection; When convening video-conference conference, MCU uses the network interface of configuration route to call out video terminal and sets up the master session connection, makes this video terminal by this master session meeting of connecting into; This video terminal is gone into after the meeting, and MCU re-uses other network interfaces and calls out this video terminal foundation session connection fully.The specific implementation flow process is called out video terminal 1 with MCU as shown in Figure 4, and setting up one, to be equipped with session connection be that example describes, and can connect a master session in the practical application and set up a plurality of session connections that are equipped with.Detailed process may further comprise the steps:
411, set up H.225 being connected between MCU and the MT1,411 are specially (4111)～(4113) again, comprising:
(4111), MCU sends TCP (Transmission ControlProtocol, transmission control protocol) connection request to affiliation video terminal MT1, sets up a TCP and connects, and this TCP connects and is used to transmit H.225 call-signaling message;
(4112), MCU is to affiliation video terminal MT1 transmission SETUP (foundation) message H.225;
(4113), affiliation video terminal MT1 sends CONNECT to MCU and sets up response message, finishes with MCU and calls out establishment of connection.
412, on connection basis H.225, set up H.245 and connect, by connection negotiation MCU and MT1 both sides' ability parameter H.245, and open logical channel between MCU and the MT1.412 are specially (4121)～(4123), and detailed process comprises:
(4121), MCU sends the TCP connection request to affiliation video terminal MT1, sets up a TCP and connects, and this TCP connects and is used to transmit H.245 media negotiation message;
(4122), carry out the capability set exchange by message H.245 between MCU and the MT1, H.245 agreement adopts the principle of recipient (MCU or MT1) control to set up logic channel, transmit leg (MT1 or MCU) can only be determined characteristic of channel parameter in the scope of recipient (MCU or MT1) regulation, the major function of capabilities exchange is to announce the ability to accept of local terminal to the other side by suitable message.This message also allows to announce transmitting capacity, but a kind of selection purpose of local terminal is only represented in effect, wishes that the other side pays attention to when determining receiving ability;
(4123), after the ability to accept that obtains MCU or MT1, MT1 or MCU just determine send mode, enable logic channel opening procedure, data such as transmission of audio and video in this scope.
413, MCU and affiliation video terminal MT1 set up the RTP session, transmission RTP Media Stream.
414, MCU keeps master session to be connected with affiliation video terminal MT1 by RoundTripDelay (loop round-trip delay) signaling, MCU sends the RoundTripDelay signaling with predetermined period to MT1, after MT1 receives this RoundTripDelay signaling, return the RoundTripDelay response message to MCU, expression MCU with join between the video terminal MT1 be connected normal.
Step 420, MCU uses network interface 2 to call out MT1 and sets up session connection fully, it is basic identical that detailed process and network interface 1 are set up the process that master session is connected, just MCU is when using network interface 2 to send SETUP signaling in the signaling H.225, the parameter of the SETUP signaling of transmission in the step (4112) is duplicated, increase a backup territory simultaneously in the SETUP signaling, the parameter attribute in this backup territory is a Boolean type, when this backup thresholding was 1, expression was set up by the SETUP signaling and is equipped with session connection.The particular content of SETUP signaling is as shown in table 1:
The content of table 1:SETUP signaling
| SETUP signaling (in the step 410) { protocolIdentifer sourceAddress sourceInfo destCallSignalAddress activeMC conferenceID conferenceGoal callType sourceCallSignalAddress remoteExtensionAddress callIdentifier mediaWaitForConnect canOverlapSend multipleCalls maintainConnection presentationIndicator screeningIndicator neededFeatures desiredFeatures supportedFeatures h245Tunneling | SETUP signaling (in the step 420) { protocolIdentifer sourceAddress sourceInfo destCallSignalAddress activeMC conferenceID conferenceGoal callType sourceCallSignalAddress remoteExtensionAddress callIdentifier mediaWaitForConnect canOverlapSend multipleCalls maintainConnection presentationIndicator screeningIndicator neededFeatures desiredFeatures supportedFeatures h245Tunneling |
| } | backup } |
In the above-mentioned steps 420 MCU use network interface 2 call out video terminal MT1 set up be equipped with session connection detailed process as shown in Figure 5, may further comprise the steps:
Need to prove, be equipped with session connection in order to ensure at least one and keep unimpeded,, rebulid session connection fully continuing to use other network interfaces that do not take to call out described video terminal when MCU detects describedly when being equipped with session connection and breaking down.
When the route between MCU and the video terminal breaks down, need carry out master session and connect and the switching that is equipped with session connection, as shown in Figure 6, may further comprise the steps:
In order to guarantee that MCU is equipped with session connection and successfully takes over master session and connect and to carry out media flow transmission, before this step, preferably also comprise: MCU detects whether be equipped with session connection normal, and whether promptly detect the port status that is equipped with session connection normal.For example, when the RoundTripDelay signaling that default MCU detects fully session connection is lost number of times less than preset value (for example, 3 times), think that this port status that is equipped with session connection is normal.
When MCU detects describedly when being equipped with session connection and breaking down, MCU will continue to use other network interfaces that do not take to call out described video terminal to rebulid and be equipped with session connection.
Between MCU and video terminal be equipped with session connection take over master session is connected carry out media flow transmission after, when fault restoration that master session connects, media flow transmission can be switched back the master session connection from being equipped with session connection, as shown in Figure 7, may further comprise the steps:
MCU uses the network interface of configuration route to call out video terminal and sets up the master session connection, this video terminal is connected into after the meeting by this master session, also can connect this master session respectively and set up a plurality of session connections that are equipped with, and the different session connections that is equipped with is provided with different priority by a plurality of network interfaces.When the route between MCU and the video terminal breaks down, can select to be equipped with session connection according to priority that is equipped with session connection and default choice criteria, and the session connection fully of activation selection, making this be equipped with session connection takes over master session and connects and carry out media flow transmission, the specific implementation flow process may further comprise the steps as shown in Figure 8:
Need to prove that this step and step 820 do not have the branch of sequencing on execution sequence, promptly MCU can be before or after use network interface 2 calling video terminals be set up session connection 1 fully, and the 3 calling video terminals foundation of use network interface are equipped with session connections 2.
MCU be provided with to be equipped with after the priority of session connection, can detect session connection state fully, and adjustment is equipped with the priority of session connection according to testing result.For example, after the priority that MCU be provided with to be equipped with session connection 1 is high priority,, the priority that is equipped with session connection 1 can be adjusted into low priority when detecting that session connection 1 is fully broken down or link bandwidth when reducing; When the fault restoration that detects fully session connection 1 or link bandwidth improve, the priority that is equipped with session connection 1 can be readjusted and be high priority.
Need to prove that the default choice criteria in this step can be set to fixed standard, also can on-the-fly modify.
Step 860, MCU activates signaling by the session connection 1 that is equipped with of network interface 2 to the video terminal sendaisle;
After video conference finishes, the master session between MCU and the video terminal is connected and be equipped with session connection all discharge, to save Internet resources.
Be equipped with to connect when breaking down when detecting,, can set up once more to be equipped with by this unnecessary network interface and connect if also have unnecessary network interface by keep-alive signaling.
The invention provides the system that realizes port thermal backup in a kind of video conference, comprise multipoint control unit, a plurality of video terminal, this multipoint control unit comprises at least two network interfaces.
Multipoint control unit is used to use network interface to call out video terminal and sets up master session and connect, and to set up mode identical with existing connection because master session connects, and do not give unnecessary details at this.Carry out media flow transmission by this master session connection, and use other network interfaces to call out video terminal and set up session connection fully, connect when breaking down when detecting master session, activate signaling by being equipped with session connection to the video terminal sendaisle, activate and be equipped with session connection and take over master session and connect and carry out media flow transmission.
Above-mentioned multipoint control unit, whether normal, when detecting that session connection is broken down fully, continue to use other network interfaces that do not take to call out multipoint control units and rebulid session connection fully if also being used for detect being equipped with session connection.
Multipoint control unit and video terminal are set up and are equipped with session connection, and it is roughly the same wherein to be equipped with session connection and master session ways of connecting.Difference is to set up in the process being equipped with session connection, and multipoint control unit will duplicate a to being equipped with session connection with video terminal master session establishment of connection parameter.And multipoint control unit is set up with video terminal and H.245 is connected, and consults ability parameter, opens logical channel, but does not carry out media flow transmission by being equipped with session connection.
After multipoint control unit and video terminal are set up and are equipped with session connection, keep being equipped with session connection with video terminal by the RoundTripDelay signaling, whether and it is normal to be equipped with session connection by the detection of RoundTripDelay signaling, lose number of times when the RoundTripDelay signaling that is equipped with session connection and (for example exceed preset value, 3 times) time, then detect session connection fully and break down.
Above-mentioned multipoint control unit also is used for when detecting the fault restoration of master session connection, connects to described video terminal sendaisle by master session and activates signaling.
Multipoint control unit detects RoundTripDelay signaling that master session connects when losing number of times less than preset value (for example, 3 times), connects sendaisle by master session and activates signaling, activates master session and connects and carry out media flow transmission.Connect media flow transmission just often at master session, multipoint control unit is closed session connection instruction fully by being equipped with the session connection transmission, closes session connection transfer medium flow data fully, makes it to remain on Status of Backups.
The invention provides the device of realizing port thermal backup in a kind of video conference, be applied to comprise that this multipoint control unit comprises at least two network interfaces in the system of multipoint control unit, a plurality of video terminals.
Said apparatus comprises as shown in Figure 9:
The main connection set up module 910, be used to use a network interface calling video terminal on the multipoint control unit to set up the master session connection, be specially: the TCP passage of foundation and described video terminal, and to described video terminal transmission SETUP signaling, H.225 foundation be connected with described video terminal; And, consult ability parameter, and open the logical channel between described multipoint control unit and the described video terminal by setting up H.245 connection; Connect by this master session then and carry out media flow transmission.The main connection set up the network interface that module 910 is used the configuration purpose route, calls out the video terminal affiliation, and video terminal according to normal flow incoming call meeting, is connected to set up master session, connects with video terminal by this master session and carries out media flow transmission.
Be equipped with to connect and set up module 920, be used to use other network interfaces on the multipoint control unit to call out video terminal foundation session connection fully.Particularly, be equipped with to connect and set up module 920 is carried SETUP signaling from the backup sign to the video terminal transmission, this backup identifies and is used for being equipped with session connection to the video terminal indication by being connected to of SETUP signaling foundation of carrying the backup sign, and set up H.245 connection negotiation ability parameter with video terminal, open the logical channel between multipoint control unit and the video terminal.
Wherein, transmission carry backup sign the SETUP means of signaling can for: during SETUP signaling in sending signaling H.225, the parameter of setting up the SETUP signaling that sends when master session connects is duplicated, in the SETUP signaling, increase a backup territory simultaneously, the parameter attribute in this backup territory is a Boolean type, when this backup thresholding was 1, expression was set up by the SETUP signaling and is equipped with session connection.
The above-mentioned connection fully set up module 920, also is used for breaking down when being equipped with session connection, uses other network interfaces calling video terminals to rebulid and is equipped with session connection.
Set up module 920 and use on the multipoint control units other network interfaces to call out video terminals to set up at least two and be equipped with session connections when above-mentioned be equipped with to connect, should be in advance according to predetermined strategy, above-mentioned at least two priority of session connection fully are set.And described be equipped with to connect set up module 920, can also be according to being equipped with session connection status detection result at least two, adjusts above-mentioned at least two priority of session connection fully.For example, be equipped with to connect set up module 920 and the priority that is equipped with session connection 1 is set is high priority after, when being equipped with that session connection 1 is broken down or link bandwidth when reducing, the priority that is equipped with session connection 1 can be adjusted into low priority.
Particularly, detection module 940 detects by the RoundTripDelay signaling whether be equipped with session connection normal, when the RoundTripDelay signaling that is equipped with session connection is lost number of times and exceeded preset value (for example, 3 times), then detects session connection fully and breaks down.
Among the present invention, set up a master session connection and at least one by a plurality of network interfaces and be equipped with session connection, when master session connected the appearance interruption, other were equipped with session connection and take over the function of interrupting the master session connection immediately, realize the fast quick-recovery of the media flow transmission between video terminal and the MCU.Therefore, when port breaks down, guarantee that interrupting does not appear in meeting; Greatly reduce when network failure occurring, call out video terminal again and go into club's time spent.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
More than disclosed only be several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.
Claims (17)
1, realize the method for port thermal backup in a kind of video conference, be applied to comprise that described multipoint control unit comprises at least two network interfaces, it is characterized in that, said method comprising the steps of in the system of multipoint control unit, a plurality of video terminals:
Described multipoint control unit uses a network interface to call out video terminal and sets up the master session connection, connects by described master session and carries out media flow transmission;
Described multipoint control unit uses other network interfaces to call out described video terminal and sets up session connection fully;
Described multipoint control unit detects described master session and connects and break down, and is equipped with session connection and activates signaling to described video terminal sendaisle by described, activates describedly to be equipped with session connection and to take over described master session connection and carry out media flow transmission.
2, the method for claim 1 is characterized in that, described multipoint control unit uses a network interface to call out video terminal and sets up the master session connection, specifically comprises:
Described multipoint control unit is set up the TCP passage with described video terminal, and sends the SETUP signaling to described video terminal, and H.225 foundation be connected with described video terminal;
H.245, described multipoint control unit foundation is connected with described video terminal, consults ability parameter, and opens the logical channel between described multipoint control unit and the described video terminal.
3, the method for claim 1 is characterized in that, described multipoint control unit uses other network interfaces to call out described video terminal and sets up session connection fully, specifically comprises:
Described multipoint control unit carries the SETUP signaling that backup identifies by sending to described video terminal, and described backup identifies and is used for being equipped with session connection to described video terminal indication by described being connected to of SETUP signaling foundation of carrying the backup sign;
After described video terminal obtains described backup sign, H.245 be connected by setting up with described multipoint control unit, consult ability parameter, and open logical channel between described multipoint control unit and the described video terminal, if described video terminal does not get access to described backup sign, and is then busy to described multipoint control unit answering system.
4, the method for claim 1 is characterized in that, described multipoint control unit uses other network interfaces to call out described video terminal and sets up after the session connection fully, also comprises:
Described multipoint control unit detects described session connection fully and breaks down, and continues to use other network interfaces that do not take to call out described video terminal and rebulids session connection fully.
5, the method for claim 1 is characterized in that, the described session connection fully of described multipoint control unit activation is taken over described master session connection and carried out also comprising after the media flow transmission:
Described multipoint control unit detects the fault restoration that described master session connects, and then connects to described video terminal sendaisle by described master session and activates signaling, activates described master session and takes over described session connection fully and carry out media flow transmission.
6, the method for claim 1 is characterized in that, the described session connection fully of described multipoint control unit activation is taken over described master session connection and carried out also comprising before the media flow transmission:
Described multipoint control unit detection is described, and session connection is normal fully.
7, the method for claim 1 is characterized in that, described multipoint control unit uses other network interfaces to call out described video terminal and sets up session connection fully, specifically comprises:
Described multipoint control unit uses other network interfaces to call out described video terminal and sets up at least two session connections fully, and described at least two priority that are equipped with session connection are set;
Described multipoint control unit activates and is equipped with session connection and takes over described master session and connect and carry out also comprising before the media flow transmission:
Described multipoint control unit is selected the described session connection that is equipped with according to described at least two priority that are equipped with session connection.
8, method as claimed in claim 7 is characterized in that, at least two of described multipoint control unit settings are equipped with after the priority of session connection, also comprise:
Described multipoint control unit detects described at least two and is equipped with the session connection state, adjusts described at least two priority that are equipped with session connection according to described testing result.
9, realize the system of port thermal backup in a kind of video conference, comprise multipoint control unit, a plurality of video terminal, described multipoint control unit comprises at least two network interfaces, it is characterized in that,
Described multipoint control unit, be used to use a network interface to call out video terminal and set up the master session connection, carry out media flow transmission by described master session connection, and use other network interfaces to call out described video terminal and set up session connection fully, connect when breaking down when detecting described master session, be equipped with session connection and activate signaling by described, activates and describedly be equipped with session connection and take over described master session connection and carry out media flow transmission to described video terminal sendaisle.
10, system as claimed in claim 9, it is characterized in that, described multipoint control unit, be used to also detect whether described to be equipped with session connection normal, described when being equipped with session connection and breaking down when detecting, continue to use other network interfaces that do not take to call out described video terminal and rebulid session connection fully.
11, system as claimed in claim 9, it is characterized in that, described multipoint control unit, also be used for when detecting the fault restoration of described master session connection, connect to described video terminal sendaisle by described master session and to activate signaling, activate described master session and take over described session connection fully and carry out media flow transmission.
12, realize the device of port thermal backup in a kind of video conference, be applied to comprise that described multipoint control unit comprises at least two network interfaces, it is characterized in that in the system of multipoint control unit, a plurality of video terminals, described equipment comprises:
The main connection set up module, is used to use a network interface to call out video terminal and sets up the master session connection, connects by described master session then and carries out media flow transmission;
Be equipped with to connect and set up module, be used to use other network interfaces to call out described video terminal and set up session connection fully;
Backup module, set up module and set up the module connection with described main the connection respectively with described the connection fully, be used for when described master session connection is broken down, be equipped with session connection and activate signaling by described, activates and describedly be equipped with session connection and take over described master session connection and carry out media flow transmission to described video terminal sendaisle;
Detection module is set up module and is connected with described backup module with described main the connection respectively, when being used to detect loop round-trip delay signaling between described multipoint control unit and the video terminal and losing number of times and exceed preset times, triggers described backup module.
13, device as claimed in claim 12 is characterized in that, described master session connects and specifically comprises: the TCP passage of foundation and described video terminal, and to described video terminal transmission SETUP signaling, H.225 foundation be connected with described video terminal; And, consult ability parameter, and open the logical channel between described multipoint control unit and the described video terminal by setting up H.245 connection;
Described session connection fully specifically comprises: send the SETUP signaling of carrying the backup sign to described video terminal, described backup identifies and is used for being equipped with session connection to described video terminal indication by described being connected to of SETUP signaling foundation of carrying the backup sign, and set up with described video terminal and H.245 to be connected, consult ability parameter, open logical channel between described multipoint control unit and the video terminal.
14, device as claimed in claim 12, it is characterized in that, described detection module, also set up the module connection with described the connection fully, be used to detect whether described to be equipped with session connection normal,, use the network interface that does not take to call out described video terminal and rebulid session connection fully when being equipped with session connection and breaking down when described.
15, device as claimed in claim 12, it is characterized in that, described backup module, during the fault restoration that also is used for connecting when described master session, connect to described video terminal sendaisle by described master session and to activate signaling, activate described master session and take over described session connection fully and carry out media flow transmission.
16, device as claimed in claim 12, it is characterized in that, the described connection fully set up module, specifically be used to use other network interfaces to call out described video terminal and set up at least two session connections fully, described at least two priority that are equipped with session connection are set, when described master session connection is broken down, select to be equipped with session connections according to described at least two priority that are equipped with session connection.
17, device as claimed in claim 16 is characterized in that, the described connection fully set up module, also is used for being equipped with the session connection state according to described at least two, adjusts described at least two priority that are equipped with session connection.
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