CN101710960A - Method and system for realizing video conference - Google Patents
Method and system for realizing video conference Download PDFInfo
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- CN101710960A CN101710960A CN200910208634A CN200910208634A CN101710960A CN 101710960 A CN101710960 A CN 101710960A CN 200910208634 A CN200910208634 A CN 200910208634A CN 200910208634 A CN200910208634 A CN 200910208634A CN 101710960 A CN101710960 A CN 101710960A
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Abstract
The invention is applicable to the field of video conference communication, and provides a method and a system for realizing video conference. The method comprises setting IP addresses of multi network segments on a multi control unit (MCU) with each IP address corresponding to one sub-network, and setting sub-network segments of RAS signaling agent; setting IP addresses of network interface boards which are used for processing media data when each sub-network communicates with the MCU; registering the terminal on each sub-network on a Gate Keeper (GK); establishing the connection between a terminal participating the conference and the MCU by the address and related information obtained by the GK; distributing the terminal participating the conference to the network interface boards corresponding to each sub-network segment by the MCU according to the IP address. The above method can realize pure IP video conference between sub-networks incapable of performing intercommunication on IP level under the precondition of ensuring independence between the sub-networks and unnecessary additional arrangement of special line.
Description
Technical field
The invention belongs to the video conference communication field, relate in particular to a kind of method and system that realize video conference, specifically, the present invention relates to a kind of method and system that between the terminal of not intercommunication of IP aspect, realize video conference.
Background technology
Consider that for network security a lot of enterprise customers are divided into the several separate subnet with its network from logic, can not be in the direct intercommunication of IP aspect between each subnet.
Under the prior art, the user holds in the enterprise video conference between each subnet and need adopt and hold the meeting of E1 special line, perhaps carry out the IP conversion, make the intercommunication of the video conference terminal realization IP aspect between each subnet by NAT (Network Address Translation, network address translation).Yet holding the meeting of E1 special line needs to arrange in addition special line, and needs to support the conference terminal of E1 special line meeting, thereby has increased extra expense; And use needs the extra NAT device that increases by the method that NAT carries out the IP conversion, and can cause the intercommunication of IP aspect between two subnets, thereby destroys independence and fail safe between each subnet.
Summary of the invention
The object of the present invention is to provide a kind of method and system that between the terminal of not intercommunication of IP aspect, realize video conference, be intended to solve under the prior art, holding video conference in the terminal of not intercommunication of IP aspect needs to arrange special line in addition or destroys independence between each subnet and the problem of fail safe.
The present invention is achieved in that a kind of method that realizes video conference, and described method comprises:
The IP address of a plurality of network segments is set on multipoint control unit, the corresponding subnet in each IP address, and the subnet network segment of RAS Xin Lingdaili is set;
The IP address of network interface board is set, and each described subnet and described multipoint control unit carry out communication all has described network interface board that media data is handled;
Endpoint registration on each described subnet is to the gatekeeper;
Address and the relevant information obtained by described gatekeeper connect the terminal and the described multipoint control unit that participate in a conference;
Described multipoint control unit according to the IP address with the described terminal distribution that participates in a conference to the network interface board that is positioned at each subnet network segment correspondence.
Another object of the present invention is to provide a kind of system that realizes video conference, described system comprises:
Network segment dispensing unit is used for being provided with the IP address of a plurality of network segments on multipoint control unit, the corresponding subnet in each IP address, and the corresponding subnet network segment that the RAS Xin Lingdaili is set;
Network interface board is provided with the unit, is used to be provided with the IP address of network interface board, and making each subnet and multipoint control unit carry out communication all has network interface board that media data is handled;
The endpoint registration unit is used for the endpoint registration on each subnet to the gatekeeper;
Connect and to set up the unit, be used for the address that obtains by described gatekeeper and relevant information and set up being connected of the terminal that participates in a conference and described multipoint control unit;
The terminal distribution unit is used for according to the IP address terminal distribution to the network interface board that is positioned at each subnet network segment correspondence.
The invention has the beneficial effects as follows: by increasing the RAS Xin Lingdaili and relevant networking being set, in independence and the fail safe guaranteed between each subnet of enterprise, and need not additionally arrange under the prerequisite of special line, realize between the IP aspect can not the subnet of intercommunication, can holding the video conference of pure IP.
Description of drawings
Fig. 1 is a kind of method that is implemented in video conference that the embodiment of the invention provides;
Fig. 2 is the networking structure figure of the multipoint control unit that provides of the embodiment of the invention and RAS Xin Lingdaili network when realizing on same PC;
Fig. 3 is the networking structure figure of the multipoint control unit that provides of the embodiment of the invention and RAS Xin Lingdaili network when not realizing on same PC;
Fig. 4 a and Fig. 4 b are the flow charts that conference terminal is registered to the gatekeeper after the networking that provides of the embodiment of the invention;
Fig. 5 a and Fig. 5 b are that the multipoint control unit that the embodiment of the invention provides initiatively invites conference terminal to enter the flow chart of meeting;
Fig. 6 a and Fig. 6 b are the flow charts that the conference terminal in the different sub-network that provides of the embodiment of the invention initiatively makes a call to multipoint control unit;
Fig. 7 is a kind of system that realizes video conference that the embodiment of the invention provides.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
In embodiments of the present invention, the subnet outside the subnet of gatekeeper place is communicated by letter with the gatekeeper by the RAS Xin Lingdaili, and final and multipoint control unit connects.Thereby, be implemented in the IP aspect directly the video conference terminal of intercommunication hold the video conference of pure IP, and do not arrange special line in addition, do not destroy the independence and the fail safe of subnet yet.
Gatekeeper's (GateKeeper is called for short GK) mainly finishes routing function; Registration, access, bandwidth change, state and detach procedure between the RAS signaling capability utilizes message H.225.0 to carry out to keep in end points and pass.
Multipoint control unit (Multi Control Unit is called for short MCU) is the key equipment of multi-spot video conference system, is made up of a multipoint controller MC (Multipoint Controller) and a multipoint processor MP (Multipoint Processors).The effect of MCU is equivalent to the effect of a switch.MC handles the method for holding consultation of appointment in the proposed standard H.245 between all terminals, so that determine the common sound that uses and the disposal ability of television image in communication process.MC also controls conferencing resource, determines which sound and television data stream will be to the broadcasting of a plurality of targets, but does not directly handle any Media Stream.MP handles the mixing of medium and handles voice data, television image data and data etc.MC and MP can be used as independent parts or are integrated into other parts.
Fig. 1 shows a kind of method that realizes video conference that the embodiment of the invention provides.From being divided into the terminal the different sub-network in logic, can not intercommunication in the IP aspect; As local subnet, other subnet communicates by RAS Xin Lingdaili and gatekeeper this method with one of them subnet, and and then other subnet and MCU are connected, the terminal of other subnet and MCU swap data are realized the video conference function.Concrete steps are as described below:
In step S101, the IP address of a plurality of network segments is set on multipoint control unit, the corresponding subnet in each IP address sets the subnet network segment of RAS Xin Lingdaili;
In step S102, the IP address of network interface board is set, each subnet all carries out communication and all will have network interface board that media data is handled with multipoint control unit;
In step S103, the endpoint registration on each subnet is to GK;
Terminal on each subnet is registered on the GK by the register flow path of standard.Directly register with the terminal of GK in same subnet to GK; And with GK not in the terminal of same subnet, need register to GK by the RAS Xin Lingdaili; Specific as follows described.
In step S104, address that obtains by described gatekeeper and relevant information are set up being connected of the terminal that participates in a conference and described multipoint control unit.
Multipoint control unit MCU initiatively invites the flow process of meeting on the terminal to be: MCU initiates ARQ to GK, and to the address information of GK inquiry terminal, GK response ACF returns the IP address of terminal, and MCU is according to configuration, and decision binding segment A or network segment B make a call to terminal; Specific as follows described.
Terminal makes a call to MCU, and terminal is initiated ARQ, to the address information of GK inquiry MC, GK is according to configuration, judge that terminal is positioned at segment A or network segment B, GK response ACF returns the MCU address of the corresponding network segment, and terminal is carried out Signalling exchange according to the address of the MCU that receives to MCU; Specific as follows described.
In step S105, MCU according to the IP address with terminal distribution to the network interface board that is positioned at each subnet network segment correspondence.
Fig. 2 shows multipoint control unit and RAS Xin Lingdaili when realizing on same PC networking mode and network settings.What describe among the figure is the networking of holding video conference between two subnets, and the networking of holding video conference between a plurality of subnets can be provided with reference to this figure.
Subnet A and subnet B are set, and wherein MS80, GK, MCU, RAS Xin Lingdaili, network interface board ENIL_A, conference terminal A are in subnet A, and network interface board ENIL_B, conference terminal B are in subnet B.Conference terminal among conference terminal among the subnet A and the subnet B can not intercommunication in the IP aspect.The IP address of each equipment is respectively among the subnet A: MS80, GK are on same PC, and the IP address is A1; MCU, RAS Xin Lingdaili are on same PC, and the IP address is A2, and the IP that another subnet also is set simultaneously is B1; MCU directly is registered on the GK, so the IP of its GK is set to A1; The IP address of network interface board ENIL_A is A3; The IP of conference terminal A is A4, the terminal among the subnet A can with the GK direct communication, so the IP address of GK is A1.The IP address of each equipment is respectively among the subnet B: the IP address of network interface board ENIL_B is B2; The IP address of conference terminal B is B3, and the terminal among the subnet B need could be communicated by letter with GK by the RAS Xin Lingdaili, so the IP address of the GK of conference terminal B is the IP address B1 of the subnet of RAS Xin Lingdaili setting.
By above-mentioned networking mode and network settings, the terminal among the subnet A can directly be registered on the GK, and the terminal among the subnet B is registered on the GK by the RAS Xin Lingdaili.
Fig. 3 shows multipoint control unit and RAS Xin Lingdaili networking mode and the network configuration when realizing on the different PCs.What describe among the figure is the networking of holding video conference between two subnets, holds the networking and the network configuration of video conference between a plurality of subnets and can carry out reference with this.
Subnet A and subnet B are set, and wherein MS80, GK, MCU, RAS Xin Lingdaili, network interface board ENIL_A, conference terminal A are in subnet A, and network interface board ENIL_B, conference terminal B are in subnet B.Conference terminal among conference terminal among the subnet A and the subnet B can not intercommunication in the IP aspect.The IP address of each equipment is respectively among the subnet A: MS80, GK are on same PC, and the IP address is A1; MCU IP address is A2, and the IP that another subnet also is set simultaneously is B1, and MCU directly is registered on the GK, so the IP of its GK is set to A1; The IP of RAS Xin Lingdaili is A3, and the IP of another subnet also is set simultaneously, and the IP that B2, RAS Xin Lingdaili need be provided with GK is A1; The IP address of network interface board ENIL_A is A4; The IP of conference terminal A is A5, the terminal among the subnet A can with the GK direct communication, so the IP address of its GK is A1.The IP address of each equipment is respectively among the subnet B: the IP address of network interface board ENIL_B is B3; The IP address of conference terminal B is B4, and the terminal among the subnet B need could be communicated by letter with GK by the RAS Xin Lingdaili, so the IP address of the GK of conference terminal B is B2.
By above-mentioned networking mode, the terminal among the subnet A can directly be registered on the GK, and the terminal among the subnet B is registered on the GK by the RAS Xin Lingdaili.
Fig. 4 a and Fig. 4 b show the flow process of the endpoint registration of different sub-network to GK.The idiographic flow of registration is not different, specific as follows described yet simultaneously for networking mode:
Fig. 4 a describes be with GK in the flow process that is registered to GK with the online conference terminal A of height.Conference terminal A and GK are in same subnet, so register flow path need not pass through the RAS Xin Lingdaili.Concrete flow process comprises: step S4011 terminal A initiates register requirement RRQ to GK; Step S4012, GK return RCF or RRJ as the case may be.
What Fig. 4 b described is the flow process that conference terminal B is registered to GK.Conference terminal B and GK be not in same subnet, so the RAS signaling of registration need be transmitted by the RAS Xin Lingdaili.Concrete flow process is: step S4021, terminal B send the message of register requirement RRQ to the RAS Xin Lingdaili; Step S4022, the RAS Xin Lingdaili is transmitted the register requirement rrq message according to the GK information of configuration to GK; Step S4023, GK return RCF or RRJ to the RAS Xin Lingdaili as the case may be; Step S4024, RAS Xin Lingdaili are again to conference terminal B transmitted response message RCF or RRJ.
Fig. 5 a and Fig. 5 b show the flow process that MCU invites meeting on the interior conference terminal of different sub-network.MCU invites the idiographic flow of different sub-network different, specific as follows described:
What Fig. 5 a described is the flow process that MCU initiatively invites the conference terminal A meeting of going up, and specifically comprises: step S5011, MCU send the IP address of call request ARQ inquiry terminal to GK; Step S5012, GK return call request to MCU according to specific circumstances and confirm ACF or call denial ARJ message; Step S5013, MCU send the message Setup that sets up calling to conference terminal A after receiving call request acknowledge message ACF; Step S5014, conference terminal A returns the message CallProceeding that calling is being handled to MCU; Step S5015, conference terminal A sends call request message ARQ to GK; Step S5016, GK return call request to conference terminal A according to specific circumstances and confirm ACF or call denial ARJ message; Step S5017 conference terminal A sends ALERTING message Alerting to MCU after receiving call request message ACF; Step S5018 conference terminal A sends the message Connect that connects to MCU.
What Fig. 5 b described is the flow process that MCU initiatively invites the conference terminal B meeting of going up.Step S5021, MCU send the IP address of call request ARQ inquiry terminal to GK; Step S5022, GK return call request to MCU according to specific circumstances and confirm ACF or call denial ARJ message, need to return the IP address of conference terminal B and show that conference terminal B is registered to GK by the RAS Xin Lingdaili in ACF message; Step S5023, MCU send the message Setup that sets up calling to conference terminal B after receiving call request message ACF; Step S5024, conference terminal B returns the message Call Proceeding that calling is being handled to MCU; Step S5025, conference terminal B sends call request message ARQ to the RAS Xin Lingdaili; Step S5026, RAS Xin Lingdaili transmit the call request message ARQ of conference terminal to GK; Step S5027, GK return call request acknowledge message ACF or call rejection message ARJ to the RAS Xin Lingdaili according to specific circumstances; Step S5028, the RAS Xin Lingdaili returns the response message of GK, i.e. call request acknowledge message ACF or call rejection message ARJ to conference terminal; Step S5029, conference terminal B send ALERTING message Alerting to MCU after receiving call request acknowledge message ACF; Step S50210, conference terminal B sends the message Connect that connects to MCU.
Show the flow process that the conference terminal in the different sub-network initiatively makes a call to MCU as Fig. 6 a and Fig. 6 b.The flow process of conference terminal calling MCU in the different sub-network is different, specific as follows described:
What Fig. 6 a described is the flow process that conference terminal A initiatively makes a call to MCU, specifically comprises: step S6011, and conference terminal A sends call request ARQ to GK; Step S6012, GK return call request to conference terminal A according to specific circumstances and confirm ACF or call denial ARJ message; Step S6013, conference terminal A send the message Setup that sets up calling to MCU after receiving call request message ACF; Step S6014, MCU returns the message Call Proceeding that calling is being handled to conference terminal A; Step S6015, MCU send the IP address of call request message ARQ inquiry conference terminal A to GK; Step S6016, GK return call request to MCU according to specific circumstances and confirm ACF or call denial ARJ message; Step S6017, MCU send ALERTING message Alerting to conference terminal A after receiving call request message ACF; Step S6018, MCU sends the message Connect that connects to conference terminal A.
That Fig. 6 b describes is the flow process that conference terminal B initiatively makes a call to MCU: step S6021, and conference terminal B sends call request ARQ to the RAS Xin Lingdaili; Step S6022, RAS Xin Lingdaili transmit the ARQ message of terminal to GK; Step S6023, GK return call request to the RAS Xin Lingdaili according to specific circumstances and confirm ACF or call denial ARJ message; Step S6024, the RAS Xin Lingdaili asks to confirm ACF or call denial ARJ message to the response message that conference terminal B returns GK; Step S6025, conference terminal B send the message Setup that sets up calling to MCU after receiving call request message ACF; Step S6026, MCU returns the message CallProceeding that calling is being handled to conference terminal B; Step S6027, MCU send the IP address of call request message ARQ inquiry conference terminal B to the GK agency; Step S6028, GK return call request to MCU according to specific circumstances and confirm ACF or call denial ARJ message, need to return the IP address of conference terminal B and show that conference terminal B is registered to GK by the RAS Xin Lingdaili in ACF message; Step S6029, MCU send ALERTING message Alerting to conference terminal B after receiving call request message ACF; Step S60210, MCU sends the message Connect that connects to conference terminal B.
Fig. 7 shows a kind of system that realizes video conference that the embodiment of the invention provides.For convenience of description, be part related to the present invention here.This system comprises:
Network segment dispensing unit 701 is used for being provided with the IP address of a plurality of network segments on multipoint control unit, the corresponding subnet in each IP address, and the corresponding subnet network segment that the RAS Xin Lingdaili is set; Specifically as mentioned above.
Network interface board is provided with unit 702, is used to be provided with the IP address of network interface board, and making each subnet and multipoint control unit carry out communication all has network interface board that media data is handled; Specifically as mentioned above.
Connect and to set up unit 704, be used for the address that obtains by described gatekeeper and relevant information and set up being connected of the terminal that participates in a conference and described multipoint control unit; Specifically as mentioned above.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a method that realizes video conference is characterized in that, described method comprises:
The IP address of a plurality of network segments is set on multipoint control unit, the corresponding subnet in each IP address, and the subnet network segment of RAS Xin Lingdaili is set;
The IP address of network interface board is set, and each described subnet and described multipoint control unit carry out communication all has described network interface board that media data is handled;
Endpoint registration on each described subnet is to the gatekeeper;
Address that obtains by described gatekeeper and relevant information are set up being connected of the terminal that participates in a conference and described multipoint control unit;
Described multipoint control unit according to the IP address with the described terminal distribution that participates in a conference to the network interface board that is positioned at each subnet network segment correspondence.
2. the method for claim 1 is characterized in that, endpoint registration is to realize by the register flow path of standard to the gatekeeper on described each subnet.
3. the method for claim 1 is characterized in that, described address and the relevant information of obtaining by the gatekeeper, and the terminal that need hold a meeting and multipoint control unit connect and comprise:
MCU sends the IP address of call request ARQ inquiry terminal to GK;
GK returns call request to MCU according to specific circumstances and confirms ACF or call denial ARJ message;
MCU sends the message of setting up calling to conference terminal after receiving call request acknowledge message ACF;
Conference terminal returns the message that calling is being handled to MCU;
Conference terminal directly or by the RAS Xin Lingdaili is transmitted to GK transmission call request message;
GK returns call request acknowledge message or call rejection message to conference terminal or by the RAS Xin Lingdaili to conference terminal according to specific circumstances;
Conference terminal sends ALERTING message to multipoint control unit after receiving the call request acknowledge message;
Conference terminal sends the message that connects to multipoint control unit.
4. the method for claim 1 is characterized in that, described address and the relevant information of obtaining by the gatekeeper, and the terminal that need hold a meeting and multipoint control unit connect and comprise:
Conference terminal directly or by the forwarding of RAS Xin Lingdaili sends call request to the gatekeeper;
The gatekeeper directly or by the RAS Xin Lingdaili returns call request acknowledge message or call rejection message to conference terminal according to specific circumstances;
Conference terminal sends the message of setting up calling to multipoint control unit after receiving the call request acknowledge message;
Multipoint control unit returns the message that calling is being handled to conference terminal;
Multipoint control unit sends the IP address of call request message inquiry conference terminal to the gatekeeper;
The gatekeeper returns call request acknowledge message or call rejection message to multipoint control unit according to specific circumstances;
Multipoint control unit sends ALERTING message to conference terminal after receiving the call request acknowledge message;
Multipoint control unit sends the message that connects to conference terminal.
5. the method for claim 1 is characterized in that, the described IP address that a plurality of network segments are set on multipoint control unit, and the corresponding subnet in each IP address, and the subnet network segment step that the RAS Xin Lingdaili is set is:
When multipoint control unit and RAS Xin Lingdaili were realized on same machine, multipoint control unit and RAS Xin Lingdaili were provided with the IP address of a plurality of network segments, the corresponding subnet in each IP address;
When multipoint control unit and RAS Xin Lingdaili are not realized on same machine, the IP address of multipoint control unit and RAS Xin Lingdaili and different for the IP address of the network segment of subnet setting, and the IP address of their GK is the same.
6. a system that realizes video conference is characterized in that, described system comprises:
Network segment dispensing unit is used for being provided with the IP address of a plurality of network segments on multipoint control unit, the corresponding subnet in each IP address, and the corresponding subnet network segment that the RAS Xin Lingdaili is set;
Network interface board is provided with the unit, is used to be provided with the IP address of network interface board, and making each subnet and multipoint control unit carry out communication all has network interface board that media data is handled;
The endpoint registration unit is used for the endpoint registration on each subnet to the gatekeeper;
Connect and to set up the unit, be used for the address that obtains by described gatekeeper and relevant information and set up being connected of the terminal that participates in a conference and described multipoint control unit;
The terminal distribution unit is used for according to the IP address terminal distribution to the network interface board that is positioned at each subnet network segment correspondence.
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Application publication date: 20100519 |