A kind of video communication method, equipment and system
Technical field
The present invention relates to communication technical field, relate in particular to a kind of video communication method, equipment and system.
Background technology
Along with the continuous development of Communications Market, the application of video communication service is not only that the enterprise customer needs video calling more and more widely, and domestic consumer has also produced strong demand to video calling.Described video communication service claims video telephone (Videophone) business again, is a kind of communication service of transmitting exchange both call sides image and voice signal on IP network simultaneously.The image of video telephone can be dynamic, also static, but all be realtime graphic.
The voice and the image of video communication service all are to be carried on the IP network simultaneously at present.Along with the development of business with popularize, engendered the demand that voice and image need be carried on respectively on the heterogeneous networks.For example voice bearer on PSTN (public switched telephone network), image is carried on the IP network.Work can be realized like this:
1) can utilize pstn telephone to improve IP video telephone voice quality;
2) can utilize the PSTN network, reduce, especially reduce inserting taking of layer bandwidth to IP network.For mobile phone, more practical;
3) fixed line carrier can easierly carry out rate control.
For these reasons, at present industry has proposed voice and image are carried on technology on the heterogeneous networks respectively, is implemented as follows:
Prior art is with reference to Fig. 1, and the specific implementation process comprises the steps:
1:T1 and T2 two equipment are set up calling on the PSTN network, T1 calls out the PSTN number of T2, and continues;
2:T1 and T2 for example transmit the IP address by DTMF (dual-tone multifrequency) by PSTN circuit transmission both sides' IP address (having at least a side to transmit gets final product).
3: after obtaining the IP address, both sides initiate point-to-point call (having a side to initiate to get final product).
After the call setup success of 4:IP network, view data is transmitted on IP network, and voice bearer is at PSTN.
In the above-mentioned video communication process,, also need on IP network, set up server in order to solve the NAT that T1 and T2 are private network IP addresses (network address conversion) crossing problem.For example T1 and T2 support STUN (User Datagram Protoco (UDP) UDP is to the simple traversal mode of NAT), need to exist STUN Server on the network.
If what at first initiate is that IP network is called out, after call setup, transmit both sides' PSTN number by IP network, then need pre-configured loCal number (consider the situation of trunk call, need the loCal number of configuration band area code).
Therefore, there is following shortcoming in prior art:
1, when being used for connecting the scene of PSTN network after elder generation connects IP, need pre-configured loCal number (to consider the situation of trunk call, the loCal number that needs configuration band area code), as local switch do not accept with the local call of area code then this scheme can't implement.If reconfigure again when this terminal is used for other subscribers feeder simultaneously, use inconvenient;
2, under some networking scene, for example under NGN (next generation network) networking, the equipment that has had the supporting NAT of providing to pass through on the network increases STUN Server more at this moment and can cause overlapping investment.And this scheme can't be used existing device;
3, under some networking scene, for example under the NGN networking, wish processing such as traffic measurement or authentication and accounting are also carried out in the video communication on the IP network.If direct point to point call then can't realize.
Summary of the invention
The embodiment of the invention provides a kind of video communication method, equipment and system, solved in the prior art video communication view data and voice are separated carrying realize complicated, problems such as cost height.
The embodiment of the invention is achieved through the following technical solutions:
The embodiment of the invention provides a kind of video communication method, comprising:
At local side apparatus is terminal one configuration MultiParty Service;
Described terminal one is set up first calling, voice-bearer or image in described calling with supporting the terminal two that inserts at least two networks by local side apparatus;
Described terminal two is initiated second by local side apparatus and is called out, load image or voice in this second calling.
The embodiment of the invention provides a kind of multiple access network termination, comprising:
The first call setup module is used to set up first and calls out, voice or image in described first calls out in the carrying video communication;
The second call setup module, be used for after described first call establishment or foundation, initiate second by local side apparatus and call out, be used for carrying the image or the voice of video communication, disposed MultiParty Service for described second terminal called of calling out in the described local side apparatus.
The embodiment of the invention provides a kind of video communication system, comprising:
First network and second network carry voice and image in the video communication respectively;
Local side apparatus is used to terminal that MultiParty Service is set;
The terminal of video communication, wherein at least one is for supporting to insert the multiple access network termination of at least the first network and two networks of second network, the terminal of at least two networks of described support access can set up the first calling back voice-bearer or image in described first calling, and second calling of load image or voice is initiated in triggering in setting up described first calling procedure or after setting up.
The embodiment of the invention provides a kind of video communication method, comprising:
Calling terminal and terminal called are set up first by local side apparatus and are called out, voice or image in described first calls out in the carrying video communication;
Arbitrary terminal in described calling terminal and the terminal called is initiated second by local side apparatus and is called out;
Described local side apparatus is called out the number corresponding relation of place network in described first calling and second according to two terminals that set in advance, judge whether that allowing to set up described second calls out, if allow, then set up described second and call out, image or voice in described second calls out in the carrying video communication; If do not allow, then finish.
The embodiment of the invention provides a kind of local side apparatus, comprising:
The termination number information memory cell is used for number and the described number corresponding relation of store video communicating pair terminal on two difference load images and speech network;
The recall judging unit is used for judging according to the number corresponding relation of described storage whether terminal can set up initiation second calling under first situation of calling out.
The embodiment of the invention provides a kind of video communication system, comprising:
First network and second network carry voice and the image in the video communication respectively;
Local side apparatus is provided with:
The termination number information memory cell is used for number and the described number corresponding relation of store video communicating pair terminal on two difference load images and speech network;
The recall judging unit is used for judging according to the number corresponding relation of described storage whether terminal can set up initiation second calling under first situation of calling out.
The technical scheme that is provided by the invention described above embodiment as can be seen, the embodiment of the invention is by the participation of local side apparatus, realized in the video communication view data and voice are separated and be carried in two callings, in prior network device, do not need to increase new equipment, reduce unnecessary investment, and because the participation of local side apparatus has been arranged, make that traffic measurement and billing operation are more prone in the video communication service.
Description of drawings
Fig. 1 is a prior art video communication Organization Chart;
Fig. 2 is the embodiment of the invention one a described video communication Organization Chart;
Fig. 3 is the embodiment of the invention two described method flow diagrams;
Fig. 4 is the embodiment of the invention four described method flow diagrams.
Embodiment
Be to realize call establishment in the described video communication method of the embodiment of the invention by local side apparatus, setting up under first situation of calling out, by terminal initiation second calling of supporting to insert at least two networks, thereby voice and image in the video communication are carried in two callings respectively.
Described second calls out the network of setting up calling in the network that can insert in the terminal support of at least two networks of described support access initiates, and has also set up the network of calling in the network that can insert in the terminal support of at least two networks of described support access and has initiated second calling.
The terminal of at least two networks of described support access promptly supports to insert simultaneously the terminal of a plurality of networks, and present embodiment abbreviates the multiple access network termination as.
Both sides' network of described intercommunication can be IP network, PSTN (public switched telephone network), GSM (global system for mobile communications), CDMA (code division multiple access), 3G network etc.
Below in conjunction with accompanying drawing embodiment of the present invention is elaborated.
The embodiment of the invention one provides a kind of video communication system, described embodiment system architecture as shown in Figure 2, comprise: first network, local side apparatus, as soft switch, second network, terminal (at least one inserts the multiple access network termination of at least two networks two terminals of intercommunication for support).
The described terminal one of present embodiment is only to support to insert the terminal of a network, for example only supports to insert first network; Terminal two is the multiple access network termination, supports to insert simultaneously first network and second network.
Described local side apparatus is used to terminal that MultiParty Service is set, and is generally only to support the terminal that inserts a network that described MultiParty Service is set.
Described multiple access network termination is provided with at least:
The first call setup module is used to set up first and calls out, voice or image in described first calls out in the carrying video communication;
The second call setup module is used for making a call in described second after described first call establishment or foundation, is used for carrying the image or the voice of video communication.
The embodiment of the invention two provides a kind of video communication method, and first network is an IP network among the described embodiment; Second network is the PSTN network.Calling terminal among the described embodiment is a terminal of only supporting to insert IP network, and terminal called is the multiple access network termination, promptly supports to insert IP network and supports to insert the PSTN network again.Described two terminals can be registered on the local side apparatus simultaneously, also can be registered to different local side apparatus.It is that example describes that present embodiment belongs to a soft switch with the video communication both sides.The concrete operating process of present embodiment before carrying out following step, is a calling terminal T1 configuration three party service as shown in Figure 3.Video communication service below carrying out again:
Step 1: calling terminal T1 calls out the number of terminal called T2 in the PSTN territory in IP network by local side apparatus (present embodiment is soft switch), sets up first by gateway and calls out;
Step 2: behind described first call setup or set up in the process, multiple access network termination T2 initiates second by local side apparatus (present embodiment is soft switch) in IP network and calls out;
Owing on local side apparatus (present embodiment is soft switch), be provided with the three party service of T1 in advance, and because T1 is a terminal of only supporting to insert IP network, therefore can only be in Three-Way Calling as called, and T2 is owing to support to insert simultaneously two networks, thereby in Three-Way Calling, can be used as caller, so T1 and T2 set up first call out after, on local side apparatus (present embodiment is soft switch), think to be in the state that conversation is waited between T1 and the gateway.This moment, T2 can pass through IP network, initiated the calling to T1, and was not subjected to the restriction of PSNT network.
Step 3: after described second call setup success, voice are called out transmission first, and view data is called out transmission second.
The foregoing description is by the participation of local side apparatus (present embodiment is soft switch), realized setting up earlier first and called out (by IP network and PSTN network service), set up second again and call out (by IP network communication), voice bearer in the video communication is called out first, image is carried on second and calls out, reduced unnecessary investment, and can realize processes such as traffic measurement and authentication and accounting by described local side apparatus.
The foregoing description be described multiple access network termination as called situation, when described multiple access network termination during as caller, then described second calls out and is initiated by caller.When communicating pair is the multiple access network termination, then can initiates described second and call out by the either party.
The embodiment of the invention three provides a kind of video communication system, comprise: first network, local side apparatus, as soft switch, second network, terminal two terminals of intercommunication (as described in wherein any or two can also can be the multiple access network termination for only supporting to insert the terminals of a network).
The described local side apparatus of present embodiment is provided with:
The termination number information memory cell is used for number and the described number corresponding relation of store video communicating pair terminal on two difference load images and speech network;
The recall judging unit is used for judging according to the number corresponding relation of described storage whether terminal can set up initiation second calling under first situation of calling out.
In video communication service, no matter from which terminal make a call earlier, perhaps no matter earlier from which network-originated call, after two call setup successes, image and voice can be carried in two callings.
The embodiment of the invention four provides a kind of video communication method, and first network is an IP network among the described embodiment; Second network is the PSTN network.Calling terminal among the described embodiment is a terminal of only supporting to insert IP network, and terminal called is the multiple access network termination, promptly supports to insert IP network and supports to insert the PSTN network again.Described two terminals can be registered on the local side apparatus simultaneously, also can be registered to different local side apparatus.It is that example describes that present embodiment belongs to a soft switch with the video communication both sides.As shown in Figure 4, specifically comprise the steps:
Step 1: calling terminal T1 calls out the number of terminal called T2 in the PSTN territory by local side apparatus (present embodiment is soft switch), sets up first and calls out;
Step 2: the IP address or the both sides that transmit both sides in described two terminal T1, the T2 band go up the sign that registration is used at local side apparatus (present embodiment is soft switch);
For example, can transmit IP address or the described both sides sign that registration is used on local side apparatus (present embodiment is soft switch) by DTMF.
Step 3: after obtaining described IP address or sign, both sides initiate second by local side apparatus (present embodiment is soft switch) and call out; Described promoter can be T1 or T2;
Step 4: described local side apparatus according to two terminals of storage two respectively the number corresponding relation on load image and the speech network judge whether to allow described second to call out, if allow, then set up second and call out; If do not allow, terminated call then.
When two terminals all are when only supporting to insert the terminal of a network, twice calling carried out at the different passages of consolidated network respectively, and also, the voice in the video communication and image are carried on the different passages of consolidated network respectively.
In sum, the embodiment of the invention is by the participation of local side apparatus, realized in the video communication view data and voice are separated and be carried in two callings, in prior network device, do not need to increase new equipment, reduce unnecessary investment, and because the participation of local side apparatus has been arranged, make that traffic measurement and billing operation are more prone in the video communication service.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.