A kind of method that connects of calling out of between network visual telephone, setting up
Technical field
The present invention relates to a kind of method of attachment that is directed to digital signal transfers by analog-and digital-communication network in the foundation of radio phone terminal equipment room.
Background technology
PSTN (public switched telephone network) phone is as interpersonal instrument of linking up, Already in people's the life for a long time.The diversity of the content that need exchange along with people, Internet (the Internet) network has also entered into people's life, makes us can utilize Internet resources fully, realizes that multimedia (sound, image, data etc.) is mutual.
Visual telephone service at first is a kind of as the telephone service pattern, is the function expansion of traditional voice phone.Core content as business does not change, and all is in order to satisfy the directly hope of talk of strange land people, and visual form has been enriched the content and the mode of talk, makes interchange more lively smooth and easy.
Existing broadband video telephone (internet protocol-based IP) all is enough to make the user satisfied, but truly has a lot of inconveniences in call establishment in speech quality on the picture quality.
Because broadband video telephone is based on the IP mechanics of communication, before communication was set up, at first, the both sides of communication need possess the IP address so.Undertaken by the Internet in the example of video telephone communication, the both sides' that communicate IP address is unique.
The user who has fixed ip address, if it is online that he knows that another one is connected Internet, and the IP geocoding that has the video telephone of independent IP address (is annotated: encode and be made up of the four groups of decimal system three figure places, separator in the middle of adding, totally ten five), he just can directly dial this coding, so that connect and carry out visual interchange with it.
At this connected mode, there are two problems:
1. the fixed ip address resource based on the Internet network reduces day by day.Because Internet not merely serves this a kind of demand of video call, so application group is huge, the application independent IP address is not only the expense costliness, and has only address seldom can supply to distribute, far away the number that can not satisfy the demands.
2.IP geocoding system, it is not the number system that ordinary populace is known, carry out video telephone number coding if use IP geocoding system, the number memory system of serving for video telephone specially that the user is about 15 with setting up a cover, the inquiry that other mechanism of society also will match with it, retrieval, systems such as bulletin (114 Help Centers in the similar PSTN system, the 117-weather forecast, 110-reports to the police, i.e. the bulletin of various numbers), during this society in reality uses, increase the weight of the application cost of operator scheme undoubtedly, reduced the feasibility of operation.
Provide access service by bandwidth operator, but do not have the IP address user on the fixing Internet network, video telephone exchanges between the leading subscriber in order to make things convenient in operator, can distribute to fixing user name of each video telephone user voluntarily, the coding method operator of user name sets up on their own, the access service network inside of operator also need provide a whole set of user management, running, the software and hardware system of scheduling.
Above-mentioned pattern has following defective:
1. because the user can not have fixed IP addresses, the video telephone user who has fixed IP addresses so on Internet just can not contact directly this type of user.
Between the different operators because intercom number system difference, user's management, running, scheduling mechanism is also different, so can't realize directly that the video telephone user's is interconnected.
3. because operator will set up and manage whole call setup system,, and increase operation and maintenance cost accordingly so operator needs extra business for this reason to increase a large amount of investments.
Therefore, have now between network visual telephone call setup pattern do not provide a kind of unanimity, effectively, can satisfy the connection mode that all users use.
Summary of the invention
The object of the present invention is to provide a kind of between network visual telephone, foundation to call out the method that connects, all users are connected by the mode of unanimity, reach simply, between radio phone terminal equipment, realize fast and safely communication.
A kind of method that connects of calling out of between network visual telephone, setting up provided by the present invention, this network visual telephone has the interface that inserts PSTN network and IP-based broadband internet network, may further comprise the steps: the audio call that the user sets up based on PSTN by telephone number connects; When needs carried out video telephone, both sides' network visual telephone elder generation was to the IP network application and obtain own address information on network; Both sides transmit this address information on the PSTN network; Both sides connect on IP network according to the other side's who obtains address information, and begin to carry out videophone interactive.
The method that connects is called out in above-mentioned setting up between network visual telephone, and wherein: video telephone also can directly insert DSL (Digital Subscriber Loop) network.
The method that connects is called out in above-mentioned setting up between network visual telephone, and wherein: network visual telephone can insert IP-based broadband internet network when needed.
Adopted above-mentioned technical solution, video telephone can be connected on the PSTN network by analog interface, is used to carry out traditional telephone service, is connected to a digital communications network by digital interface simultaneously, is used to carry out the video telephone service.When the user has hybrid network pattern interface (as ADSL (ADSL (Asymmetric Digital Subscriber Line)) network user incoming end), then only need the analog interface of radio phone terminal to be attached thereto, just can carry out tradition or visual two kinds of telephone services.For in the both call sides either party, the other side's IP address information all is that the other side comes by the PSTN network delivery, and the user uses original telephone number, just can realize the purpose of video call.The operation of equipment pattern that the present invention utilizes people to know, the number system, use habit is set up video telephone and is connected, make all can carry out interconnected by the user that the Internet network carries out visual telephone service, broadband access operator is reduced because of the required management of visual telephone service, fund, human input reduces the cost of whole service.
Description of drawings
Fig. 1~3rd, the embodiment of the different access waies of different user according to the present invention.
Fig. 4 is the embodiment of the user of the different access waies according to the present invention by the interconnection of PSTN and INTERNET network.
Fig. 5 is a FB(flow block) of the present invention, illustrates by the present invention to realize switching to the flow process that DSL or Ethernet carry out conversation on video telephone from the PSTN network.
Embodiment
The present invention utilizes original pstn telephone network, and the bridge that connects as video telephone gets twice the result with half the effort.Before video call connects foundation, build PSTN earlier and connect, on the PSTN link, transmit then, both sides carry out based on Internet network face-to-face communication required address and data message.After this after the Information Authentication that both sides obtain is passed through, initiate request by the Internet network, connect with the callee by the calling party, thus the call setup system of realization video telephone, and implement the normal talking function.
Among the present invention the video telephone incoming end is described by the three kinds of forms that are generalized into:
As shown in Figure 1, support video telephone set of the present invention that two connectivity ports are arranged, one is used to insert the PSTN network, and one is connected on the switching equipment on the Internet by netting twine.The access way that this figure represents is applicable to that the user has based on the fixed ip address on the Internet.
As shown in Figure 2, the broadband inserting service that the user provides by bandwidth operator will oneself be connected on the network equipment that operator provides, and the agency mechanism by operator is connected into the Internet network, and another interface is connected to the PSTN network.
As shown in Figure 3, (connectivity port of using this moment is the PSTN port to the user with the network that oneself is connected to Access Service Provider by the DSL network, the broadband access port free time), access network with the voice-and-data passage separately is linked into respectively on PSTN network and the Internet network.This connected mode only need be passed through the single line road, and is very convenient simple.
As shown in Figure 4, this figure is the link model figure that first three is planted the network after connected mode all inserts, and we can notice that dissimilar terminals is connected with the Internet network by two kinds of network PSTN.
As shown in Figure 5, though the mode difference of different video terminal access networks, they can connect by flow process shown in Figure 5.Behind calling subscriber's off-hook, just insert the PSTN network, be not connected into the Internet network, the calling subscriber makes a call by the telephone number of dialing the called subscriber, behind called subscriber's off-hook, call out to connect and set up, both sides can carry out speech exchange by the PSTN network, and this part is identical with our traditional telephony call pattern.Next, one side that need carry out visual talk has become the calling party in the visual call establishment, he sends invitation to the callee, after obtaining agreeing, press a certain particular key on the phone, the callee also presses a certain particular key and responds, the IP address information that both sides' phone was connected on the Internet network automatically and obtained oneself using on the Internet network this moment, at different access waies, the mode that phone obtains the IP address is also different:
● connection shown in Figure 1, the fixed ip address of applying for is stored in phone inside, directly call during calling.
● connection shown in Figure 2, phone inserts Internet by operator, and operator's dynamic assignment is given the IP address of ownership of phone and operator, and this address is dynamic, and this calls out the address that calling obtains with next time may be different fully.Operator can tell phone by the form of data-message after distributing.Phone has just obtained the IP address information oneself used.The address is counter to take affair if operator does not provide, and can send detection packet to the independent third party's server on the Internet network, by its feedback addresses information.
● connection shown in Figure 3, most of DSL operator lands Shi Douhui the user and notifies the user with the form of data-message for user's IP address dynamic assignment.If operator does not provide this type of service, we still can obtain feeding back to the address information of oneself by send the form of detection packet to third-party server.
After obtaining the IP address of oneself, the calling and called both sides pass to the other side with oneself address information with the form of digital coding by the PSTN network, both sides are after obtaining partner address information, can send the communication data of a series of video telephone such as our audio/video coding data and control command successively to partner address, accept the other side's reduction of data simultaneously and become sound and image.So far, call establishment of the present invention promptly comes to an end.In this process, the major part work of connection is finished automatically by phone, and user's complicated operation degree reduces, and the user has just pressed primary key than dialing plain old telephone more, sets up process with regard to the conversation of having finished video telephone.
Operation overview of the present invention:
The present invention has the purposes and the application of many reality, and at individual family, user of enterprises and institutions and public service department all provide a kind of mode of easy application video telephone.Innovative point of the present invention is to have set up a kind of method of attachment, made full use of original resource,, used emerging Broadband Internet network technology in conjunction with user operation habits and telephone number system, the demand of mass consumption is satisfied in the application that visual telephone service can be close to the users.The present invention gives the remarkable change that visual telephone service brought as follows:
● visually become a normal mutual part alternately, along with the process need of talk produces, this just makes the visual natural application that become alternately, more presses close to use habit.
● carry out video telephone and original normal speech phone uses same set of number system, the user does not need to write down again own and other people video telephone number, as long as both sides' phone is supported this kind connected mode, just can carry out visual alternately.
● operation supports the complexity of this professional phone not compare not tangible the lifting with the operation plain old telephone, and Here it is uses crowd's number to increase, and is more conducive to the business development of video telephony applications.
● the requirement to the service of broadband access operator reduces.This has two aspect benefits, at first, makes operator launch the required input of new business and reduces, and reduces business risk.Secondly, mean that professional dependence to operator reduces, thereby guaranteed professional stability.In the world, provide by different operators that the intercommunication interconnection becomes very easy between the phone set terminal of access service.