CN101453524A - Multimedia service implementing method - Google Patents

Multimedia service implementing method Download PDF

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Publication number
CN101453524A
CN101453524A CN 200710178809 CN200710178809A CN101453524A CN 101453524 A CN101453524 A CN 101453524A CN 200710178809 CN200710178809 CN 200710178809 CN 200710178809 A CN200710178809 A CN 200710178809A CN 101453524 A CN101453524 A CN 101453524A
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pstn
terminal
called
caller
server
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CN 200710178809
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CN101453524B (en
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梁进
杨晔辉
林建国
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BEIJING QUALVIDEO ELECTRONIC TECHNOLOGY Co Ltd
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BEIJING QUALVIDEO ELECTRONIC TECHNOLOGY Co Ltd
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Abstract

The invention discloses a method for realizing multimedia services, wherein user boxes which are connected with an IP network are arranged for users inside a multimedia service system which comprises video servers, the IP network, a PSTN network, a PSTN exchange device and a PSTN terminal. The method comprises: IP identities are allocated for the user boxes and the video servers in the multimedia service system, and bound with PSTN numbers; when the PSTN terminal gives out PSTN calls, calling PSTN numbers and called PSTN numbers are detected, and an address server determines calling IP identities and called IP identities according to binding relations; a call control server establishes IP connection between user boxes represented by the calling IP identities and user boxes represented by the called IP identities or the video servers according to the calling IP identities and the called IP identities; and the PSTN exchange device establishes PSTN connection for a calling PSTN terminal and a called PSTN terminal. The method utilizes the prior PSTN terminal to perform multimedia service operation, widens the use range of the multimedia services, breaks through the use bottleneck of multimedia terminals, and really makes the multimedia services used by numerous households.

Description

A kind of realization method of multimedia services
Technical field
The present invention relates to multimedia service, particularly a kind of realization method of multimedia services.
Background technology
In the prior art, the realization of multimedia service can realize at PSTN separately on the net, also can realize on IP network merely.
The online multimedia service of realizing of concrete PSTN is typically video telephone, and the user dials the other side's PSTN number, sets up PSTN at two PSTN terminal rooms and connects, and the audio, video data time-sharing multiplex is transmitted on this PSTN connects.
Utilize separately in the mode that PSTN realizes multimedia service above-mentioned, be subjected to the restriction of PSTN resource, video information is limited in the multimedia service of transmission, but this mode is simple to operate to the user.
When multimedia service is realized on IP network separately, the user is by installing video software login video server on computers, determine that through mutual the user wishes the multimedia resource that obtains, after video server is encoded this multimedia resource, be transferred to user computer by IP network, user computer utilizes the video software decoding and plays.
Utilize separately in the mode that IP realizes multimedia service above-mentioned, because the transmitted in packets form that IP network adopts, the multimedia resource that makes the user obtain contains much information to be increased greatly, but because IP network is to adopt the transmission policy of doing one's best, make that service quality can't guarantee when utilizing IP network to realize the multi-medium data transmission separately; And,, aspect equipment, need a computer for the terminal use, with respect to the mode of PSTN realization multimedia service, the investment on its equipment will be much larger than the investment of plain old telephone, at customer-side, the user must understand computation, limited multimedia service towards customer group.
Summary of the invention
In view of this, the invention provides a kind of realization method of multimedia services, can be both user-friendly, can make the user obtain abundanter multimedia resource information again.
For achieving the above object, the present invention adopts following technical scheme:
A kind of realization method of multimedia services, in the multi-media service system that comprises video server, IP network, PSTN network, PSTN switching equipment and PSTN terminal, be the subscriber box that is used for the process IP agreement and carries out audio/video encoding/decoding that each user's setting links to each other with IP network, this method comprises:
Be each subscriber box in the described multi-media service system and each video server difference distributing IP sign, and with the PSTN number binding of each IP sign with at least one PSTN terminal;
When the PSTN terminal of having bound the IP sign is initiated the PSTN calling as caller, detect caller and called PSTN number, according to default binding relationship, determine that the caller and the called IP that bind respectively with caller and called PSTN number identify; According to caller and called IP sign, between the subscriber box of the subscriber box of caller IP sign representative and called IP sign representative or video server, set up IP and connect;
The PSTN switching equipment is that caller is set up PSTN with called PSTN terminal and is connected.
The PSTN number binding of each IP sign and at least one PSTN terminal preferably, is set on the addressing server in IP network.
Preferably, described IP is designated SIP URI.
Preferably, when initiating caller PSTN terminal that PSTN calls out and not linking to each other with the subscriber box of its binding, this method further comprises: the ivr server that setting and PSTN network link to each other with IP network; When caller PSTN terminal is initiated the PSTN calling, before the called PSTN number of calling out, add the prefix of default ivr server correspondence;
The described PSTN of foundation connects and comprises: according to the prefix in the PSTN number of caller PSTN terminal dial-out, the PSTN switching equipment is called out described PSTN and is inserted ivr server; The called PSTN number of ivr server after according to prefix set up ivr server and is connected with the PSTN of called PSTN terminal room.
Preferably, described detection caller and called PSTN number comprise: ivr server receives and detects caller and called PSTN number.
Preferably, the binding relationship that described basis is default, determining that the caller IP sign of binding respectively with caller and called PSTN number and called IP identify comprises: ivr server sends to addressing server in the IP network with caller and called PSTN number, the addressing server is determined the caller IP sign and the called IP sign of binding respectively with caller and called PSTN number according to the binding relationship of preserving.
Preferably, the described IP of foundation connection comprises: preserve the IP sign of each IP terminal and the corresponding relation of IP address in advance on call control server; The addressing server sends called IP sign according to caller IP sign to caller IP terminal, and caller IP terminal sends call request to call control server, and subscriber box that request and called IP sign are represented or video server are set up IP and be connected; Call control server obtains caller and called IP sign, and according to the IP sign of preserving and the corresponding relation of IP address, determines caller and called IP address, and to be calling subscriber's box set up IP with called subscriber's box or video server is connected.
Preferably, when initiating caller PSTN terminal that PSTN calls out and linking to each other with the subscriber box of its binding, described detection caller and called PSTN number comprise: described subscriber box detects the called PSTN number of caller PSTN terminal dial-out; Caller PSTN number is the PSTN number of the PSTN terminal that links to each other with subscriber box.
Preferably, the binding relationship that described basis is default, determine that the caller IP sign and the called IP sign of binding respectively with caller and called PSTN number comprise: subscriber box identifies the IP sign of self as caller IP, send call request to call control server, request is set up IP with called IP terminal and is connected, and carries caller IP sign and called PSTN number; After call control server obtains called PSTN number, the called IP sign of addressing server lookup in IP network and called PSTN number binding.
Preferably, described according to caller and called IP sign, between caller and called IP terminal, set up the IP connection and comprise:
On call control server, preserve the IP sign of each IP terminal and the corresponding relation of IP address in advance;
Call control server identifies according to the called IP sign of obtaining from the addressing server with from the caller IP that calling subscriber's box obtains, and the corresponding relation of the IP that self preserves sign and IP address, determine caller IP address and called IP address, and set up IP for calling subscriber's box and called subscriber's box or video server and be connected.
Preferably, described corresponding relation in call control server preservation IP sign and IP address in advance comprises:
When in IP network, video server being set, the IP of the video server that in call control server, preserve to be provided with sign and be corresponding relation between this video server IP address allocated;
Subscriber box powers on the back to described call control server transmission register requirement, carries the IP sign and the IP network of self preserving and be self IP address allocated in this request, and call control server is preserved the IP sign of reception and the corresponding relation between the IP address.
Preferably, described IP network, PSTN network and control unit constitute media service;
Preserve in the control unit of media service each subscriber box and video server IP sign and IP address, reach and the PSTN number of its binding;
Described detection caller and called PSTN number comprise: after described PSTN terminal was initiated the PSTN calling, the control unit in the media service was determined caller and called PSTN number;
The described IP of foundation connects and comprises: the control unit in the media service is according to the IP address of preserving in advance and the PSTN number of binding, determine caller and called IP address, and between the subscriber box of the subscriber box of caller IP address correspondence and called IP address correspondence or video server, set up IP and be connected.
Preferably, when having bound the PSTN hanging up terminal of IP sign, the PSTN that removes this PSTN terminal place connects, and removes the subscriber box of IP sign representative of PSTN number binding of this PSTN terminal or the IP at the current place of video server connects.
Preferably, when the PSTN of on-hook terminal when not being connected with the subscriber box of its binding, the subscriber box of the PSTN number binding of this PSTN terminal of described dismounting or the IP at the current place of video server connect and comprise: ivr server detects on-hook signal, and passes through the PSTN number of the PSTN terminal of IP network notification address server on-hook; The addressing server is according to the binding relationship of preserving, and determines the IP sign that the PSTN number of the PSTN terminal of on-hook is bound; The addressing server sends the notice that dismounting IP connects to the subscriber box or the video server of the IP sign representative of determining, notification received subscriber box or video server are according to the peer IP address of preserving, send the disconnection connection requests to call control server, call control server is removed IP and is connected.
Preferably, after setting up described IP connection, this method further comprises: the IP address of preserving the opposite end in the subscriber box of having set up the IP connection or video server;
When the PSTN of on-hook terminal when linking to each other with the subscriber box of its binding, the subscriber box of the PSTN number binding of this PSTN terminal of described dismounting or the IP at the current place of video server connect and comprise: the subscriber box that links to each other with the PSTN terminal of on-hook detects on-hook signal, and according to the peer IP address of self preserving, send the disconnection connection requests to call control server, call control server is removed IP and is connected.
Preferably, described IP network, PSTN network and control unit constitute media service;
Preserve in the control unit of media service each subscriber box and video server IP sign and IP address, reach and the PSTN number of its binding;
The subscriber box of the PSTN number binding of this PSTN terminal of described dismounting or the IP at the current place of video server connect and comprise: the control unit of media service detects on-hook signal, and determine subscriber box or the current IP address of video server with the IP sign representative of its binding according to the PSTN number of the PSTN terminal of on-hook, and the IP address that is connected with the current IP of existence in this IP address, the IP that disconnects between two IP addresses determining connects.
Preferably, when carrying out video phone call or video conference,
Utilize described PSTN to be connected caller and called PSTN terminal room transmitting audio data;
Utilize described IP to connect transmitting video data.
Preferably, when carrying out video telephone, the PSTN number that the called PSTN number of transfering to during the PSTN that caller PSTN terminal is initiated calls out is called PSTN terminal;
Caller and called IP sign are represented caller and called subscriber's box;
Utilizing described IP to connect transmitting video data comprises: caller and called subscriber's box obtain local video data respectively, connect by described IP and to be transferred to the other user's box, receive the other side be transferred to output to behind the video data decoding with display device that subscriber box links to each other on show.
Preferably, when carrying out video conference, during the PSTN that caller PSTN terminal is initiated called out, called PSTN number was a PSTN number of binding with videoconference server VCS;
Described called IP sign is represented VCS;
The PSTN terminal that a described PSTN number correspondence is set in the PSTN network is the ivr server that links to each other with the PSTN network with IP network, and a described PSTN number corresponding service is a video conference business;
Described set up PSTN and connect after, this method further comprises: ivr server determines that called PSTN number corresponding service is a video conference business, connect to the voice suggestion of caller PSTN terminal plays by described PSTN, and carry out authentication according to the information of PSTN terminal input, after authentication is passed through, caller PSTN terminal is added the appointment meeting-place that comprises in the information of attending a meeting of this PSTN terminal input, and described PSTN number of attending a meeting information and caller PSTN terminal is sent to VCS by IP network;
Describedly utilize described PSTN to be connected caller and called PSTN terminal room transmitting audio data comprises: speech data to each PSTN terminal transmission meeting-place of attending a meeting of specifying the meeting-place;
When setting up IP and connect, the further information of attending a meeting that sends according to described ivr server adds described appointment meeting-place with the subscriber box of the IP sign representative of the PSTN number binding of caller PSTN terminal;
Utilizing described IP to connect transmitting video data comprises: VCS is to the video data in each subscriber box transmission meeting-place of attending a meeting of specifying the meeting-place, described each attended a meeting subscriber box collection and the local video Data Transmission of encoding to VCS, shows after receiving the video data decoding of VCS transmission.
Preferably, the described IP of foundation connects and comprises: VCS is according to the PSTN number and the described default binding relationship of the caller PSTN terminal of ivr server transmission, search IP sign with this PSTN number binding, and to call control server transmission call request, for setting up IP with the subscriber box of this IP that finds sign representative, VCS is connected, the information of attending a meeting according to described ivr server sends adds described appointment meeting-place with this subscriber box.
Preferably, when caller PSTN terminal was first PSTN terminal in described appointment meeting-place, after setting up PSTN and connecting, this method further comprises: ivr server was created the PSTN territory meeting of specifying the meeting-place according to the conference parameters of caller PSTN terminal input; And described conference parameters sent to VCS by IP network, the conference parameters that VCS sends according to ivr server is created the IP territory meeting of specifying the meeting-place.
Preferably, when comprising the attending a meeting during the PSTN terminal of appointment in the conference parameters of described reception, after described ivr server was created the PSTN territory meeting of specifying the meeting-place, this method further comprised: each specified PSTN terminal of attending a meeting of ivr server and conference parameters is set up PSTN and is connected;
After described VCS creates the IP territory meeting of specifying the meeting-place, this method further comprises: VCS is according to default binding relationship, the IP sign of the PSTN number binding of each PSTN terminal of attending a meeting that the inquiry conference parameters is specified, and set up IP by call control server with the subscriber box of each IP sign representative and is connected, it is added the appointment meeting-place.
Preferably, describedly comprise: utilize the PSTN of the PSTN terminal room that IVR and each attend a meeting to be connected the speech data that obtains each PSTN terminal collection, be transferred to the PSTN terminal of attending a meeting accordingly behind the audio mixing to each speech data of attending a meeting PSTN terminal transmission meeting-place of specifying the meeting-place.
Preferably, describedly comprise: according to the video way N of VCS with arbitrary this subscriber box processing of negotiation when setting up IP between subscriber box and being connected of attending a meeting to each video data of attending a meeting subscriber box transmission meeting-place of specifying the meeting-place, VCS is at other N the subscriber box of selection between subscriber box of attending a meeting except that this subscriber box, this N the subscriber box collection that VCS connect is received by IP and the local video transfer of data of coding are to described arbitrary subscriber box of attending a meeting, and described N is a positive integer.
Preferably, a described N subscriber box comprises the subscriber box as the chairman at least.
Preferably, show behind the video data decoding of described each subscriber box reception VCS transmission of attending a meeting and comprise: described arbitrary subscriber box of attending a meeting, the N road video data that receives the VCS transmission is decoded respectively, and decoded video data is merged into a screen size shows.
Preferably, this method further comprises: VCS preserves the IP sign of each subscriber box of attending a meeting, and when VCS was connected unexpected the disconnection with the IP of the subscriber box of attending a meeting arbitrarily after, VCS initiatively made a call to this subscriber box of attending a meeting by call control server, rebulid IP and connect, it is added specify the meeting-place.
Preferably, when the arbitrary PSTN of attending a meeting terminal walks out, this method further comprises: after ivr server detects the on-hook signal of the arbitrary PSTN of attending a meeting terminal, disconnect PSTN with this PSTN terminal and be connected, and notify the information of withdrawing from the arena of this PSTN terminal of VCS by IP network; VCS is according to the corresponding relation of attend a meeting subscriber box and the PSTN number preserved in advance, and the information of withdrawing from the arena of arbitrary PSTN terminal of ivr server transmission, determine the subscriber box of attending a meeting of the PSTN number correspondence of described arbitrary PSTN terminal, initiate request to call control server, and find subscriber box and remove IP and be connected.
Preferably, when the video traffic that carries out provided for video information, the called PSTN number that caller PSTN terminal is transferred to was the 2nd PSTN number of binding with video information server VIS;
Described called IP sign is represented VIS;
The PSTN terminal that described the 2nd PSTN number correspondence is set in the PSTN network is the ivr server that links to each other with the PSTN network with IP network, and described the 2nd PSTN number corresponding service provides professional for video information;
After setting up the IP connection and PSTN be connected, this method further comprises: ivr server determines that called PSTN number corresponding service is a video conference business, connect the button number that receives user's input that the PSTN terminal sends by described PSTN, and described button number sent to described VIS by IP network, described VIS is according to the button that receives number definite selected media data, utilize described IP to connect and issue this media data to calling subscriber's box, subscriber box decoded media data are play.
Preferably, when the video traffic that carries out was remote monitoring, setting in advance the corresponding PSTN terminal of PSTN number of binding with the subscriber box of monitored side was monitoring server; The PSTN number of the subscriber box binding that called PSTN number is monitored side;
After setting up described IP connection, this method further comprises: the subscriber box of monitored side obtains local video data, connect by described IP and to be transferred to calling subscriber's box, the video data that the decoding of calling subscriber's box receives outputs on the display device that links to each other with calling subscriber's box and shows.
Preferably, the corresponding caller PSTN list of numbers of having the right to monitor of PSTN number of preservation and monitored side in described monitoring server;
The described PSTN of foundation connects the back, set up IP connect before, this method further comprises: monitoring server is according to the caller PSTN list of numbers of having the right monitor corresponding with called PSTN number of caller PSTN number and self preservation, judge whether caller PSTN terminal has the right called PSTN number is monitored, if have the right, then continue to carry out the described operation that IP connects of setting up, otherwise the PSTN that port is set up connects, process ends.
As seen from the above technical solution, the present invention is when realizing multimedia service, multi-media service system comprises video server, IP network, PSTN network, PSTN switching equipment and PSTN terminal, the subscriber box that links to each other with IP network is set for each user, and be each video server in the multi-media service system and each subscriber box distributing IP sign respectively, with the PSTN number binding of each IP sign, thereby make video server and subscriber box set up corresponding relation with the PSTN terminal in the PSTN network with at least one PSTN terminal.When the PSTN terminal of having bound the IP sign is initiated the PSTN calling as caller, on the one hand, detect caller and called PSTN number, according to default binding relationship, determine that the caller IP that binds respectively with caller and called PSTN number identifies and called IP sign; According to caller and called IP sign, between the subscriber box of the subscriber box of caller IP sign representative and called IP sign representative or video server, set up IP and connect, then can utilize this IP to connect transmitting multimedia data; On the other hand, the PSTN switching equipment is that caller is set up PSTN with called PSTN terminal and is connected transmitting audio data or control data.By the way, the PSTN terminal can be implemented in and obtains multi-medium data on the IP network, made things convenient for the use of media user on the one hand, the PSTN terminal that makes full use of existing telecommunications network is carried out the operation of multimedia service, enlarged the scope of application of multimedia service, broken through the use bottleneck of multimedia terminal, connected by IP on the other hand and obtain more rich video data.
Description of drawings
Fig. 1 is the overall construction drawing of multi-media service system among the present invention.
Fig. 2 is the concrete structure figure of subscriber box among the present invention.
Fig. 3 is the overview flow chart based on the multimedia service implementation method of multi-media service system shown in Figure 1.
Fig. 4 is the networking structure figure of visual telephone service.
Fig. 5 is the implementation method particular flow sheet of visual telephone service.
Fig. 6 is the networking structure figure of video conference business.
Fig. 7 is the implementation method particular flow sheet of video conference business.
Fig. 8 provides professional networking structure figure for video information.
Fig. 9 provides professional implementation method particular flow sheet for video information.
Figure 10 is the networking structure figure of distance monitoring business.
Figure 11 is the implementation method particular flow sheet of distance monitoring business.
Figure 12 is the networking structure figure of comprehensive multi-media service system.
Embodiment
For making purpose of the present invention, technological means and advantage clearer, the present invention is described in further details below in conjunction with accompanying drawing.
Basic thought of the present invention is: be connected with IP in conjunction with the PSTN connection and realize multimedia service.
Fig. 1 is the overall construction drawing of multi-media service system among the present invention.Comprise IP network, PSTN network, video server, PSTN terminal, PSTN switching equipment and subscriber box.Wherein, subscriber box links to each other with IP network, and subscriber box and video server are referred to as the IP terminal.The PSTN terminal is meant the employed terminal of public switch telephone network, comprises telephone terminal, Personal Handyphone System(PHS) terminal (Personal Handyphone System), public mobile telephone terminal (mobile phone) etc.; The PSTN switching equipment is meant the switching equipment of realizing the PSTN function of exchange, comprises traditional digital SPC exchange equipment, Softswitch etc.
In this multi-media service system, the structure of subscriber box comprises IP network interface unit, IP protocol processing unit, image acquisition units, audio/video encoding/decoding unit and audio-video interface unit as shown in Figure 2.Wherein, the IP network interface unit is used for linking to each other with IP network; The IP protocol processing unit that links to each other with the IP network interface is used for receiving and the process IP bag, and data behind the coding of IMAQ coding unit transmission are broken into the IP bag, transfers out by the IP network interface; The IMAQ coding unit sends to the IP protocol processing unit after being used to gather local image encoding; The audio/video decoding unit is used to receive data behind the audio/video coding that the IP protocol processing unit handled, carry out audio/video decoding after, output on the display device and playback equipment that links to each other with subscriber box by the audio-video interface unit.This subscriber box can be the set that has realized the above-mentioned functions unit, can independently use or be embedded in other the equipment.
Fig. 3 is the overview flow chart based on the multimedia service implementation method of multi-media service system shown in Figure 1.As shown in Figure 3, this method specifically may further comprise the steps:
Step 301 is subscriber box and the video server distributing IP sign in the multi-media service system in advance, and with the PSTN number binding of each IP sign with at least one PSTN terminal.
Wherein, as previously mentioned, the PSTN terminal is meant the employed terminal of public switch telephone network, comprises telephone terminal, Personal Handyphone System(PHS) terminal (Personal Handyphone System), public mobile telephone terminal (mobile phone) etc., the PSTN number of PSTN terminal can be area code+telephone number, also can be phone number etc.
Step 302 has been bound the PSTN terminal of IP sign and has been initiated the PSTN calling as caller.
In this step, the PSTN number that the PSTN terminal is transferred to is that the multimedia service type that the user carries out according to this hope is determined and input PSTN terminal.
Step 303, detect caller and called PSTN number in this PSTN calling, and according to the binding relationship of setting in the step 301, determine that the caller IP sign and the called IP that bind respectively with caller and called PSTN number identify, and, between the subscriber box of the subscriber box of caller IP sign representative and called IP sign representative or video server, set up IP and be connected according to this caller and called IP sign.
In this step,, on IP network, set up IP with called IP terminal and be connected for caller IP terminal according to caller and called PSTN number, wherein, caller IP terminal must be subscriber box, and called IP terminal may be subscriber box or video server, and the IP of this foundation connects can be used for transmitting video data.
Step 304, PSTN switching equipment are set up PSTN in caller PSTN terminal with called PSTN terminal room and are connected.
The PSTN that utilizes this step to set up connects, and can be used for transmitting audio data and control data etc.
So far, multimedia service implementation method flow process of the present invention finishes.By above-mentioned flow process as can be seen, subscriber box is set in multi-media service system among the present invention, and for comprising subscriber box and video server distributing IP sign, and with at least one PSTN number binding, thereby set up corresponding relation for each subscriber box in the multi-media service system and video server and PSTN number.When carrying out multimedia service, initiating PSTN by the PSTN terminal calls out, after detecting calling and called PSTN number, setting up IP for the IP terminal of calling and called PSTN number binding connects, thereby can call out access multimedia service by PSTN, and utilize IP to connect transmitting multimedia data, therefore, make things convenient for the operation of user on the one hand, connect by IP on the other hand and obtain more rich video data multimedia service.
Above-mentioned being to overview of the present invention.As previously mentioned, according to the multimedia service type of user's request, can dial different PSTN numbers.In fact, according to the difference of multimedia service type, the specific implementation flow process of IP establishment of connection and multi-medium data transmission may also can be different.
For video telephone, video conference, after the user transfers to the PSTN number by the PSTN terminal, can set up a PSTN connection and be used for transmitting audio data, set up an IP connection again and be used for transmitting video data; Provide professional for Video service, after the user transfers to the PSTN number by the PSTN terminal, can set up a PSTN connection and be used to transmit this professional control data, set up an IP again and connect the audio, video data that is used for transmitting multimedia service; For distance monitoring business, can set up a PSTN connection and be used for transmitting control data, set up an IP connection again and be used for the transmission monitoring data.
At above-mentioned concrete type of service, the specific embodiment of the present invention is described in further details below.
In implementation process of the present invention, the IP establishment of connection can select any control protocol to carry out as required, below in the specific embodiments of the invention, all with Session Initiation Protocol as the call control protocol in the IP network.
At first, by embodiment one and embodiment two, to the type of service of video telephone and video conference, the specific embodiment of the present invention describes in detail.
Embodiment one:
Present embodiment describes in detail to the implementation method idiographic flow of visual telephone service.This method can be implemented in networking structure shown in Figure 4, and as shown in Figure 4, this networking structure comprises PSTN network portion and IP network part.Wherein, PSTN partly comprises PSTN terminal, PSTN network and PSTN switching equipment; IP section comprises subscriber box, IP network and sip server.Wherein, sip server is the call control server among Fig. 1, because the control protocol in the present embodiment is a Session Initiation Protocol, so call control server is sip server.
In networking structure shown in Figure 4, the implementation method idiographic flow of visual telephone service specifically comprises as shown in Figure 5:
Step 501 is the subscriber box distributing IP sign in the network in advance, and with each IP sign and at least one PSTN number binding.
In the video telephony applications of present embodiment, do not relate to video server, therefore, the IP terminal in the present embodiment promptly refers to the subscriber box that is connected with IP network for user's setting.
The control protocol that adopts in the present embodiment is initial session protocol (SIP), the IP sign of distributing for subscriber box is specially SIP unified resource identifier (URI) (hereafter is URI), the IP of subscriber box sign can be that subscriber box is provided with and is kept in the subscriber box when dispatching from the factory, perhaps, also can before using, distribute subscriber box by activation manipulation.
The user can be as required, and for subscriber box is bound at least one PSTN number, after binding, the PSTN terminal of these PSTN numbers can utilize this subscriber box to receive multimedia service data from IP network.The PSTN number of subscriber box binding can be set when subscriber box dispatches from the factory, and also can be provided with by activation manipulation before subscriber box uses.
Specifically realize above-mentioned distributing IP sign by activation manipulation and set up binding relationship mode can for: the user dials the special service number of excited users box by any PSTN terminal, the visit activation server, by this PSTN terminal the sequence number of subscriber box is sent to activation server (being specifically as follows TR069), activation server is this subscriber box Random assignment IP sign, this IP is identified at IP terminal of unique identification in the IP network, and the IP identification feedback that will distribute gives the PSTN terminal, and the user is kept at it in corresponding subscriber box.Activation server also receives the PSTN number of user by the binding of PSTN terminal input, sets up binding relationship between the IP sign of subscriber box and at least one PSTN number of importing, and this binding relationship is kept in the addressing server, and activation manipulation is finished.Preferably, for improving the reliability of system, activation server can also further distribute the authentication values with the corresponding setting of this URI when identifying for the subscriber box distributing IP, when the later use subscriber box is set up the IP connection, can utilize this authentication values to carry out the authentication of subscriber box.
Step 502, the sip server of URI in network that carries self after subscriber box powers on sends the SIP register requirement, registers.
In this step, after subscriber box powers on, send the SIP register requirement, and in this register requirement, carry the URI that self preserves and power on the back assigned IP address to sip server, sip server extracts the URI and the IP address of wherein carrying, and sets up corresponding relation for it.
If the process of corresponding above-mentioned steps 501 when being IP terminal distribution URI, has also further been distributed corresponding authentication values, in this step, also need carry this authentication values in register requirement; Sip server carries out authentication according to being the URI of certain IP address assignment and the corresponding relation of authentication values in the step 501 to this register requirement, if authentication is passed through, utilizes aforesaid way to set up the corresponding relation of URI and IP address, succeeds in registration; If failed authentication then feeds back the information of failed authentication, and abandons this register requirement to this IP terminal.
Through behind the said process, preferably, can regularly register operation, so that keep up-to-date IP address of this subscriber box and the corresponding relation between URIURI in the sip server.After subscriber box was finished registration, the user can be by with the PSTN terminal request of subscriber box binding and insert visual telephone service, utilized subscriber box to receive and showed multi-medium data.Can carry out following operation particularly:
Step 503, caller PSTN terminal are transferred to called PSTN number according to user's input.
Suppose that subscriber box A and subscriber box B have all finished above-mentioned steps 501 and 502.Can carry out conversation on video telephone with the PSTN terminal of subscriber box A and subscriber box B binding.For example, initiate PSTN with the PSTN terminal of subscriber box A binding as caller and call out, the called number of dialing for the PSTN number of the PSTN terminal of subscriber box B binding.
Step 504, PSTN switching equipment are that caller is set up PSTN with called PSTN terminal and is connected, and utilize this PSTN to be connected two speech datas in the PSTN terminal rooms transmission video telephone.
Step 505, PSTN number according to caller and called PSTN terminal, determine respectively IP sign with caller and called PSTN number binding, and be connected, and in subscriber box A and subscriber box B, preserve the other side's IP address respectively for the subscriber box A of caller and called IP sign representative sets up IP with subscriber box B.
Step 506, subscriber box A and subscriber box B obtain local video image separately, utilize IP to connect after encoded and be transferred to the other side, and receive the encoded video data of the other side's transmission, the decoding back shows on the display device of this locality by the video interface on the subscriber box.
So far, the transmission of above-mentioned speech data and the transmission of video data all begin to carry out, and just calling subscriber and called subscriber carry out the process of video call.Caller and the called conversation that can utilize the PSTN terminal to carry out video telephone, and can see the other side's video pictures.Here need to prove that above-mentioned PSTN connects and IP establishment of connection process, preferably carry out for parallel.
Step 507, when caller or called PSTN hanging up terminal, the PSTN that removes the current place of PSTN terminal of on-hook connects.
Step 508, the subscriber box of the IP sign representative of the PSTN number binding of the PSTN terminal of dismounting on-hook or the IP at the current place of video server connect.
So far, after the side's on-hook of conversing, the PSTN connection is connected all disconnections, the end of conversation of video telephone with IP.The implementation method flow process of video telephony applications finishes in the present embodiment.By above-mentioned flow process as seen, use the method for present embodiment, can utilize common PSTN terminal to insert visual telephone service, and utilize the subscriber box that is provided with, the video data of transmission video telephone on IP network is at PSTN transmission over networks speech data.On the one hand, on business is used, simplified user's operation greatly; On the other hand, on transfer of data, by PSTN Network Transmission speech data, thereby than present video telephone, greatly improved the effect of voice call,, thereby kept the abundant in content advantage of video pictures in the present video telephone by the IP network transmitting video data.
In above-mentioned flow process shown in Figure 5, set up in the step 504 and 505 PSTN be connected be connected with IP and step 507 and 508 in remove PSTN and be connected when being connected with IP, different according to annexation between the difference of network type and caller PSTN terminal and the subscriber box A, idiographic flow is different, with regard to concrete connection foundation and demolishing process, describe in detail one by one below:
One, in present networks and PSTN network,, then set up the PSTN connection in the following way and be connected with IP if directly link to each other between caller PSTN terminal and subscriber box A:
In this case, each subscriber box links to each other with a PSTN terminal with the binding of its IP sign, for example, the PSTN number binding of subscriber box A and PSTN terminal C, and subscriber box A links to each other with PSTN terminal C.Under the manner, subscriber box comprises also further comprise PSTN unit and detecting unit except that aforementioned structure shown in Figure 2.
PSTN connects and IP establishment of connection process comprises:
Step 1a, the PSTN number that the PSTN unit transparent transmission PSTN terminal in calling subscriber's box is transferred to are to the PSTN switching equipment, and the PSTN switching equipment is that two PSTN terminals are set up the PSTN connection according to caller and called PSTN number.
This step relates to aforesaid PSTN establishment of connection process, and wherein, concrete flow process just repeats no more here with existing to set up the standard process that PSTN calls out identical.After setting up PSTN and connecting, caller and calledly can carry out voice call, just transmitting audio data in this PSTN connection.
Step 1b, calling subscriber's box detect called PSTN number, initiate to set up the call request that IP is connected with called IP terminal to sip server, carry called PSTN number in this call request.
In the SIP call request that sends, comprise in this step called PSTN number a kind of mode can for:
The called PSTN number that the IP terminal will identify is constructed URI as the address of URI, and the INVITE of the URI of transmission calling structure asks to sip server.
Step 1c, sip server receives the SIP call request, determines caller and called IP address in this call request, for caller is connected with the called IP of foundation.
The specific implementation of this step is: at first, sip server, extract the called PSTN number that the SIP request is carried on the one hand, in advance for the PSTN number of this subscriber box foundation and the corresponding relation of URI, determine the IP address of the pairing IP of the URI address of called PSTN number correspondence in the URI that preserves according to self and the corresponding relation of IP address and the step 401 as called IP terminal; Extract the URI of the caller IP terminal of carrying in the SIP request on the other hand,, determine the IP address of caller IP terminal according to the URI that self preserves and the corresponding relation of IP address.Then, sip server and calling subscriber's box and called called subscriber's box carry out SIP to be consulted, and comprises information such as source/purpose IP address, media capability, sets up IP and connects.This IP establishment of connection process is identical with existing Session Initiation Protocol, just no longer describes in detail here.
After user's communication finished, PSTN connected the demolishing process that is connected with IP and comprises:
Step 1d, during either party PSTN hanging up terminal, PSTN unit transparent transmission on-hook signal is to the PSTN switching equipment in the subscriber box of on-hook, and the PSTN that the PSTN switching equipment is removed between two PSTN terminals connects.
Step 1e, subscriber box detects on-hook signal, and according to the peer IP address of self preserving, sends disconnection IP connection requests to sip server, and sip server is about to the IP connection and removes.The concrete request that sends can be BYE message, wherein carries the IP address of opposite end.
Two, in present networks and PSTN network,, then set up the PSTN connection in the following way and be connected with IP if do not link to each other between caller PSTN terminal and subscriber box A:
Usually for wireless PSTN terminals such as Personal Handyphone Systems, and there is not annexation between subscriber box A, subscriber box A adopts structure as shown in Figure 1 to get final product, for calling out, the PSTN that initiates by the PSTN terminal triggers the IP establishment of connection, automatic voice responding (IVR) server that setting and PSTN network link to each other with IP network, when caller PSTN terminal was initiated the PSTN calling, PSTN connected and the IP establishment of connection comprises:
Step 2a, the prefix of the ivr server correspondence that adding is preset before the called PSTN number that caller PSTN terminal is transferred to.
For example, called number is 010-82339088, and the prefix of default ivr server is 17000, when the PSTN terminal that does not then link to each other with subscriber box is initiated the PSTN calling, and dialing numbers 17000-010-82339088.
Step 2b, PSTN switching equipment call out this PSTN to the access ivr server according to the prefix in the PSTN number of caller PSTN terminal dial-out; Called PSTN number during ivr server is called out according to the PSTN that inserts after the prefix is set up PSTN with the PSTN terminal room of this called PSTN number representative and is connected.
So far, PSTN connects foundation to be finished, and than existing the PSTN of the PSTN terminal initiation that is connected to call out with subscriber box, comprises further that ivr server is as transfer in the PSTN connection of setting up herein.
Step 2c, ivr server is called out according to the PSTN that inserts, and extracts caller and called PSTN number, sends to addressing server in the IP network by IP network; The addressing server is determined the caller IP sign and the called IP sign of binding respectively with caller and called PSTN number according to the binding relationship of self preserving.
Step 2d, the addressing server sends called IP sign according to caller IP sign to caller IP terminal, caller IP terminal sends call request to call control server, request is set up IP with called subscriber's box that called IP sign is represented and is connected, sip server be caller with called subscriber's box between set up IP and be connected.
Concrete, sip server and calling subscriber's box and called called subscriber's box carry out SIP to be consulted, and comprises information such as source/purpose IP address, media capability, sets up IP and connects.This IP establishment of connection process is identical with existing Session Initiation Protocol, just no longer describes in detail here.
After user's communication finished, PSTN connected the demolishing process that is connected with IP and comprises:
Step 2e, during either party PSTN hanging up terminal, ivr server detects on-hook signal, and the PSTN that disconnects the current place of PSTN terminal of on-hook connects, and passes through the PSTN number of the PSTN terminal of IP network notification address server on-hook.
Step 2f, addressing server be according to the binding relationship of preserving, and determines the IP sign that the PSTN number of the PSTN terminal of on-hook is bound.
Step 2g, the addressing server sends the notice that dismounting IP connects to the subscriber box of the IP sign representative of determining, notification received subscriber box sends the disconnection connection requests according to the peer IP address of preserving to call control server, and call control server is removed IP and connected.
By said process as seen, there is not the PSTN terminal that is connected,, can inserts and use multimedia service easily yet as Personal Handyphone System, mobile phone etc. with subscriber box.
Three, except that above-mentioned dual mode, can also constitute media service by IP network, PSTN network and a control unit, carry out the control operation in the calling procedure, set up in the following way and remove PSTN and be connected with IP and be connected:
Preserve in the control unit of media service each subscriber box and video server IP sign and IP address, reach and the PSTN number of its binding;
PSTN connects and the IP establishment of connection comprises:
Step 3a, after the PSTN terminal was transferred to called PSTN number, the control unit in the media service was determined caller and called PSTN number, was that caller is set up PSTN with called PSTN terminal and is connected by the PSTN switching equipment.
Step 3b, control unit in the media service is determined caller and called IP address according to the IP address of preserving in advance and the PSTN number of binding, and sets up IP be connected between the subscriber box of the subscriber box of caller IP address correspondence and called IP address correspondence.
After user's communication finished, PSTN connected the demolishing process that is connected with IP and comprises:
Step 3c, during either party PSTN hanging up terminal, the control unit of media service detects on-hook signal, and the PSTN that disconnects the current place of PSTN terminal of on-hook connects.
Step 3d, the control unit of media service determines to identify with the IP of its binding the current IP address of subscriber box of representative according to the PSTN number of the PSTN terminal of on-hook, and the IP address that is connected with the current IP of existence in this IP address, the IP that disconnects between two IP addresses determining connects.
So far, introduced under three kinds of situations, PSTN connects the idiographic flow that is connected foundation and removes with IP.Wherein related to the annexation between two kinds of PSTN terminals and subscriber box, in fact, as previously mentioned, the IP sign of subscriber box and the PSTN number binding of at least one PSTN terminal, that is to say IP sign can with a plurality of PSTN number bindings, and the PSTN terminal of a plurality of PSTN number representatives of binding can have different annexations with subscriber box, thereby can make a plurality of PSTN terminals utilize a subscriber box to insert and the control multimedia service.For example, subscriber box A respectively with the PSTN number binding of PSTN terminal C and PSTN terminal D, wherein, PSTN terminal C directly links to each other with subscriber box A, the PSTN terminal D does not directly link to each other with subscriber box A, then when the PSTN terminal C dialing numbers access multimedia service, in general network, adopt step 1a to connect and be connected with removing to the mode of step 1e; During by PSTN terminal D dialing numbers access multimedia service, in present networks and PSTN network, adopting step 2a to connect to the mode of step 2g is connected with removing, thereby make a plurality of PSTN terminals can have a subscriber box, the subscriber box of this moment adopts the structure that comprises PSTN unit and recognition unit.
Said process is that example is introduced with the called free time, if the called current conversation of carrying out video telephone, the PSTN of caller connection is connected with SIP and must all can be rejected so; But, if current called subscriber is carrying out common voice call, the PSTN conversation of just only setting up, so called IP terminal can be after receiving the connection request of sip server, with display device that called IP terminal links to each other on show the information that other calls out incoming call, the user can finish current voice call this moment as required, inserts the PSTN and the SIP incoming call of incoming call; Perhaps, accept the SIP incoming call separately, set up simple IP with the other side and be connected, pass video data mutually; Perhaps, refusal voice and SIP incoming call finish this time calling procedure.
So far, the idiographic flow of the video telephone implementation method in the present embodiment finishes.By above-mentioned flow process as can be seen, adopt the mode of present embodiment, can connect video telephone, simplified user's operation greatly by simple PSTN terminal operation.Simultaneously, voice transmit in the PSTN network, than the existing video telephone that connects based on simple IP, can guarantee the transmission quality of voice, be applied as main visual telephone service for telephone type, improved user's the sense of hearing greatly and experienced, guaranteed good visual experience simultaneously.
Embodiment two:
Present embodiment describes in detail to the implementation method idiographic flow of video conference business.This method can be implemented in networking structure shown in Figure 6, as shown in Figure 6, this networking structure is than networking structure shown in Figure 4, further further comprise videoconference server (VCS) in the IP network part, be used to carry out the control of video conference, and, further comprising ivr server in this networking structure in the PSTN network, it is connected with IP network by the IP network interface.Wherein, VCS is the specific implementation of video server shown in Figure 1.In video conference business, caller IP terminal is the subscriber box that the IP of the PSTN number binding of caller PSTN terminal identifies representative, and called IP terminal is VCS.
In networking structure shown in Figure 6, the implementation method idiographic flow of video conference business as shown in Figure 7.In the related procedure of present embodiment video conference, similar with the existing videoconference flow process that is connected based on PSTN, by dialing default PSTN meeting special service number, insert the application of video conference, and be provided with in the PSTN network: the PSTN terminal of PSTN meeting special service number representative is an ivr server, be used for the Conference server as the PSTN territory, PSTN meeting special service number corresponding service is a video conference business.The method flow of specific implementation video conference comprises:
Step 701~702 are subscriber box and the VCS distributing IP sign in the network in advance, and with each IP sign and at least one PSTN number binding; The sip server of URI in network that carries self after subscriber box powers on sends the SIP register requirement, registers.
The operation of above-mentioned steps 701~702 is identical with the operation of step 501~502 among the embodiment one, just repeats no more here.Further, for VCS distributing IP sign with binding relationship is set, wherein the PSTN number with the sign binding of VCS comprises default PSTN meeting special service number, and this distributing IP sign and the operation that binding relationship is set are carried out when VCS is added system.
Step 703, the user passes through the PSTN meeting special service number that certain PSTN terminal A dials video conference arbitrarily.
In the present embodiment, suppose that the PSTN special service number is 1687-7777, in the video conference business, called PSTN number promptly refers to the special service number of video conference.
Next,, create the meeting in PSTN territory, be used for the speech data of transmitting conference, and create the meeting in IP territory, be used for the video data of transmitting conference according to the PSTN number that the PSTN terminal of caller is transferred to.Like this, just realized the establishment of video conference.Below two conference creation processes are described.
Step 704, the PSTN meeting special service number that the PSTN switching equipment is dialed according to PSTN terminal A calls out this PSTN to the access ivr server, is connected for PSTN terminal A sets up PSTN with ivr server.
Step 705, ivr server determines that according to the meeting special service number user asks video conference service, plays voice suggestion to the user, and carries out authentication according to the information that caller PSTN terminal is returned, and carries out next step after being proved to be successful.
Usually, for meeting class business, ivr server can require the PSTN terminal input information of attending a meeting, and comprises and specifies meeting-place and password, wherein specifies the meeting-place promptly to refer to the meeting room that this user enters.Ivr server is compared according to the meeting field information and the prestored information that receive, determines whether to be validated user, if the disabled user removes the PSTN that sets up and connects.
Step 706, ivr server determines that caller PSTN terminal enters the PSTN terminal in this meeting-place for first, receive this PSTN terminal and pass through the transmission conference parameters of the PSTN connection of foundation, comprise parliamentary dimension, require the called PSTN number of ivr server active invite participation meeting etc. to ivr server.
Step 707, ivr server are created the meeting in PSTN territory according to conference parameters.
The conference creation process in PSTN territory is identical with existing mode in this step, promptly carries out resource reservation etc.If comprise the PSTN terminal of attending a meeting of appointment in the conference parameters, then ivr server is called out the PSTN number of each PSTN terminal of attending a meeting, and behind the called off-hook, has promptly set up ivr server and has been connected with the PSTN of the PSTN terminal room of this off-hook.
After creating the meeting in PSTN territory, promptly can carry out the transmission of video conference speech data.Usually, if do not have chairman in the several PSTN terminals that insert, then ivr server enters the default audio file of PSTN terminal plays in meeting room for each; If there is chairman, execution in step 608 voice data transmission of carrying out meeting then.
The speech data that step 708, ivr server receive each PSTN terminal collection that participates in a conference carries out playing to corresponding PSTN terminal behind the audio mixing, and the PSTN terminal is play the audio mixing data that the PSTN switching equipment issues.
In this step, the audio mixing operation is identical with existing mode, promptly for any PSTN terminal A, other speech data except that the speech data that this PSTN terminal A gathers in the speech data of each PSTN terminal collection of participating in a conference is carried out audio mixing, play to this PSTN terminal A.
So far, the transmission that the lang sound data of going forward side by side has been set up in the meeting in PSTN territory in the video conference.Set up process with the meeting in above-mentioned PSTN territory and carry out following IP territory meeting foundation synchronously:
Step 709, ivr server sends to VCS with the conference parameters that receives by IP network.
Step 710, the conference parameters that VCS sends according to ivr server is created the meeting in IP territory.
In this step, the conference creation process in IP territory is identical with existing mode, also is to carry out resource reservation etc.If comprise the PSTN terminal of attending a meeting of appointment in the conference parameters, then the IP of the PSTN number binding of addressing server lookup these the PSTN terminals of VCS in network identifies, and according to these IP signs, setting up IP to the sip server request subscriber box corresponding with it connects, sip server is according to URI that preserves and the corresponding relation between the IP address, determines the IP address of the PSTN number correspondence of carrying in the conference parameters; And set up IP with VCS respectively for the subscriber box of these IP address correspondences and be connected.Connect when setting up at IP, also by the SIP negotiations process, and by this negotiations process, VCS obtains each and sets up the video decoding capability that subscriber box possessed that IP is connected with it, i.e. the audio/video decoding unit video way N that can decode.Concrete SIP negotiations process conformance with standard Session Initiation Protocol just repeats no more here.
After creating the meeting in IP territory, promptly can carry out the transmission of video data in the meeting.Usually, if do not have chairman in the several IP terminals that insert, then VCS enters the default video file of IP terminal plays in meeting room for each, or does not issue video flowing; If there is chairman, then begin to carry out the video Data Transmission that next step carries out meeting.
Step 711, VCS connects the local video data behind the coding that receives all subscriber box transmissions of attending a meeting by each IP, and according to the media capability of each subscriber box that participates in a conference, the video image after each subscriber box issues corresponding other at least one subscriber box coding.
In the present embodiment, subscriber box is supported the decoding of one road video data at least, and as previously mentioned, when setting up SIP connection carrying out SIP negotiation, sip server can be known the concrete decoding way of supporting of IP terminal, and notifies VCS by the IP connection.Below with one the road and the N road be that example describes.
When any subscriber box was only supported the decoding of one road video data, VCS preferably was handed down to these IP terminals with the local video image behind chairman IP terminal collection and the coding.When any subscriber box is supported the decoding of N road video data, VCS selects N subscriber box in all subscriber box, and wherein preferably include chairman's subscriber box, the local video image behind this N subscriber box collection and the coding is handed down to this subscriber box by N IP network interface.
By this step as seen, VCS in the present embodiment exists obviously different with existing video conference controller, when carrying out the issuing of multi-channel video image, it is no longer as existing video conference controller, earlier the road vision signal that shows on the screen will be organized as behind the multichannel video decoding, again to issuing behind this road video signal coding, the synthetic operation of coding again after VCS in the present embodiment can no longer decode, but directly carry out the forwarding of encoded video data, alleviate the processing burden of VCS so greatly, increased the capacity of the video conferencing system that VCS supported.
Step 712, each subscriber box reception, decoding and the video image that self receives by the display device demonstration.
At the subscriber box that possesses different decoding capabilities, the concrete operations of this step are difference to some extent.Still with support one the road and the subscriber box of N road decoding be example, for the subscriber box of only supporting one road video decode, directly the encoded video data that receives is decoded, and shows by coupled display device; For the subscriber box of supporting N road video decode, receive the encoded video data on N road, and this N road video data decoded respectively, decoded image sets is made into a screen size, show by coupled display device, and wherein preferably comprise the local video of chairman's subscriber box at least.
So far, the meeting that phonological component in the video conference passes through the PSTN territory is transmitted in the PSTN of each conference participation terminal and is play, the meeting that video section passes through the IP territory is transmitted in the subscriber box of each conference participation, on display device, play, for any one user, just experienced video conference business.
Here need to prove that the conference creation and the voice transfer in above-mentioned PSTN territory with the conference creation and the video transmission in IP territory, are carried out for parallel.
Carry out in the process in video conference, have other uninvited user C and wish to add this meeting, then can carry out following steps:
Step 713, the PSTN terminal D of user C are dialed default PSTN meeting special service number, and the PSTN switching equipment should be called out and insert ivr server, set up PSTN and connect, and carry out voice suggestion and password authentification, and checking is by then carrying out next step.
Step 714, ivr server adds the PSTN terminal of new incoming call the meeting in PSTN territory, when carrying out voice data transmission, the sound mixing of this PSTN terminal collection is gone among the audio mixing result of former each PSTN terminal, issue the audio mixing result that other all PSTN terminals are gathered speech data to this PSTN terminal; Ivr server is notified VCS by IP network, has new user to add video conference, and carries this new user's PSTN number, and VCS is that VCS and this user's subscriber box is set up IP and is connected the transmission of video data in the guild's view of going forward side by side by sip server.
When the user wished to withdraw from this video conference, the flow process that withdraws from of present embodiment comprised:
Step 715, the PSTN hanging up terminal, ivr server is received on-hook signal, this PSTN terminal is deleted from the meeting of PSTN territory, and delete the subscriber box of the IP sign representative of this PSTN number binding by IP network notice VCS, the PSTN number of the subscriber box correspondence of attending a meeting that VCS preserves according to self determines to withdraw from the subscriber box of the PSTN terminal correspondence of PSTN territory meeting, and this subscriber box is deleted from the meeting in IP territory.
By the way, realized the keep-alive connection.Specifically, when the IP network status transmission is relatively poor, certain user may lose with VCS between IP be connected, for this user, subscriber box has withdrawed from the meeting of current IP territory, can't receive the video data in the meeting; But at this moment the IP with this subscriber box identifies the PSTN terminal of binding still in the meeting of PSTN territory, still can pass through the speech data that the PSTN terminal receives meeting, after the Network Transmission situation takes a turn for the better, VCS can also be according to the subscriber box information in the meeting of wherein writing down, again this subscriber box being set up IP with VCS is connected, and insert corresponding meeting-place, continue as the conference service that this user provides the IP territory.Than the existing video conference that realizes the audio, video data transmission fully in the IP territory, improved the reliability of meeting, even the IP network situation is abominable, still can connects and listen to conference content by PSTN, improved user experience greatly.
In above-mentioned flow process, there is active call to add the PSTN terminal of video conference, transfer to the PSTN special service number of video conference in this PSTN terminal after, coupled IP terminal can detect this special service number, and behind the special service number that identifies to video conference, initiatively do not initiate the IP establishment of connection, but reply again after waiting for the VCS incoming call.Certainly, initiatively incoming call VCS, VCS wait for the mechanism that incoming call is replied again also can to adopt the IP terminal.
All participants all withdraw from room number in meeting, and the meeting in IP territory and PSTN territory is all deleted.So far, the realization flow of a video conference finishes.
So far, the idiographic flow of the video conference implementation method in the present embodiment finishes.In the present embodiment, similar with embodiment one, can there be annexation in the PSTN terminal or have annexation with the subscriber box of its binding, under two kinds of situations, all can utilize the PSTN terminal to insert and the control multimedia service, identical among concrete mode and the embodiment one, just repeat no more here.
By above-mentioned flow process as can be seen, adopt the mode of present embodiment, can be by the operation of simple PSTN terminal, user's operation has been simplified in the foundation of realization video conference and adding etc. greatly.Simultaneously, voice transmit in the PSTN network, than the existing video conference that connects based on simple IP, can guarantee the transmission quality of voice, be applied as main video conference business for telephone type, improved user's the sense of hearing greatly and experienced, guaranteed good visual experience simultaneously; Than the existing videoconference that connects based on simple PSTN, realized by audio frequency seamlessly transitting to audio frequency and video.
By above-mentioned two embodiment the embodiment of utilizing the present invention to realize video telephone and video conference has been described.These two kinds of business have a common characteristic, i.e. the transmission of multi-medium data is finished through two connections, and one is that the PSTN that is used for transmitting audio data connects, and one is that the IP that is used for transmitting video data connects.After using aforesaid way, can guarantee the good transmission quality of voice, guarantee the abundant information of video simultaneously.
Embodiment three:
In the present embodiment, provide professional implementation method to be specifically introduced to video information.This method can be implemented in networking structure shown in Figure 8, as shown in Figure 8, this networking structure and networking structure shown in Figure 4 are very similar, difference is, further comprise video information server (VIS), this VIS links to each other by IP network with sip server, and wherein subscriber box links to each other with playback equipment by audio interface.So-called video information provides professional, is meant all kinds of multimedia messagess are kept among the VIS, for example, and film, advertisement, propaganda film etc., the user can obtain the multimedia messages of preserving among this VIS by request and the mode of selecting.
In networking structure shown in Figure 8, video information provides professional implementation method idiographic flow as shown in Figure 9.In the related procedure that video information provides, similar with the existing video request program flow process that is connected based on IP, by dialing default PSTN information special service number, insert video information and provide professional, and be provided with in the PSTN network: the PSTN terminal of PSTN information special service number representative is an ivr server, and PSTN information special service number corresponding service provides professional for video information.The method flow that specific implementation video council information provides comprises:
Step 901~902 are subscriber box and the VIS distributing IP sign in the network in advance, and with each IP sign and at least one PSTN number binding; The sip server of URI in network that carries self after subscriber box powers on sends the SIP register requirement, registers.
The operation of above-mentioned steps 901~902 is identical with the operation of step 501~502 among the embodiment one, just repeats no more here.Further, for VIS distributing IP sign with binding relationship is set, wherein the PSTN number with the sign binding of VIS comprises default PSTN information special service number, and this distributing IP sign and the operation that binding relationship is set are carried out when VIS is added system.
When with power on after the PSTN terminal use of subscriber box binding wish to carry out video information when business is provided, can carry out following steps:
Step 903, the user dials PSTN information special service number by certain PSTN terminal A arbitrarily.
In the present embodiment, suppose that the PSTN special service number is 1688-8888, video information provides in the business, and called PSTN number is that video information provides professional special service number.
Step 904, the PSTN number according to the PSTN terminal is transferred to for caller PSTN terminal is connected with the called PSTN of foundation, is used for transmitting control data; And set up IP with VIS and be connected for calling subscriber's box, be used for the transmitting multimedia service data, comprise speech data and video data.
In this step concrete PSTN connect and IP establishment of connection process and embodiment one in description identical, just repeat no more here.
Step 905, VIS provides professional homepage multimedia messages to connect by IP video information and is handed down to subscriber box, after subscriber box carries out the decoding of voice and video to the multimedia messages that receives, plays by playback equipment and display device respectively and shows.
Step 906, the user imports the content of selection according to the multimedia messages of current broadcast and demonstration by the button of PSTN terminal.
Step 907, the button number of user's input is transferred to ivr server by the PSTN connection, and ivr server sends to VIS with this information by IP network, and carries the PSTN number of caller.
Step 908 after VIS receives the information that ivr server sends, according to PSTN number corresponding IP address in network, connects the multimedia messages of button number pairing chosen content and to be pushed to subscriber box by IP.
The multimedia messages that step 909, subscriber box receive, decoding VIS issues, and play and show.
Next, can return step 906, perhaps, also can hang up PSTN and connect, keep IP to connect receiving multimedia information.For the latter, normally the user watches after choosing the content of multimedia of oneself liking, and does not also think to select other content of multimedia again, can hang up PSTN and connect, and makes pstn telephone can also reply other incoming call or transfers to other PSTN number.
After the content of multimedia that the user selects finished, VIS initiatively disconnected with subscriber box by sip server and being connected, and specifically can send BYE message to sip server, carries the IP address of subscriber box, connects thereby disconnect IP, finishes this multimedia service.
If content of multimedia does not finish, when the user wishes to withdraw from whole video information business is provided, can be by button default on subscriber box, trigger subscriber box and initiatively initiate to disconnect the operation that IP connects, specifically can send BYE message to call control server, carry the IP address of VIS, connect, finish this multimedia service thereby disconnect IP.
So far, video information provides professional implementation method flow process to finish.By above-mentioned flow process as can be seen, adopt the mode of present embodiment, can connect video information by simple PSTN terminal operation and provide professional, simplified user's operation greatly, reduced requirement the user, and in the past video on-demand system, all need computer to insert, and the user needs to be grasped the using method of video request program software, and as seen, present embodiment has enlarged video information provides professional customer group.
Embodiment four:
Present embodiment describes in detail to the implementation method idiographic flow of distance monitoring business.This method can be implemented in networking structure shown in Figure 10, as shown in figure 10, this networking structure and networking structure shown in Figure 4 are similar, difference is that monitored side includes only subscriber box, and do not have PSTN terminal and display device, and in the PSTN network, further comprise the monitoring server that links to each other with IP network.
In distance monitoring business, set in advance the PSTN number of binding with the subscriber box of monitored side, its corresponding PSTN terminal is a monitoring server; The PSTN number of the subscriber box binding that called PSTN number is monitored side.
In networking structure shown in Figure 1, the implementation method idiographic flow of distance monitoring business specifically comprises as shown in figure 11:
Step 1101 is subscriber box distributing IP sign in advance, and is each at least one PSTN number of IP sign binding, and subscriber box saves as the IP sign of self distributing, and sets up corresponding supervision authority for the subscriber box of monitored side in the PSTN network.
In the present embodiment, to set up distributing IP sign identical with step 501 among the embodiment one with the process that binding relationship is set for subscriber box, just repeats no more here.In addition, be to guarantee the reasonability of monitoring, preferably, for the subscriber box of monitored side is provided with corresponding supervision authority, specifically this supervision authority can be the PSTN number that allows this subscriber box of monitoring.
Step 1102, the sip server of URI in network that carries self after subscriber box powers on sends the SIP register requirement, registers.
The operation of step 1102 is identical with the operation of step 502 among the embodiment one, just repeats no more here.
When with power on after the monitoring side PSTN terminal A that links to each other of subscriber box when wishing to carry out distance monitoring business, can carry out following steps:
Step 1103, caller PSTN terminal are transferred to the PSTN number of monitored side according to user's input.
Step 1104, PSTN switching equipment are set up PSTN with caller PSTN terminal with monitoring server and are connected.
Step 1105, monitoring server judges whether to connect monitoring business according to the supervision authority that is provided with in the PSTN number of caller and called PSTN terminal and the step 1101, if then execution in step 1107, otherwise execution in step 1106.
For guaranteeing the reasonability of monitoring, this step is checked supervision authority, if meet the supervision authority that is provided with in the step 1101, then carries out next step and is connected with the called IP of foundation for caller, if do not meet, then execution in step 1106 refusals are set up the IP connection.Concrete, when supervision authority was the PSTN number of the IP terminal of having the right to monitor, this step was judged according to caller PSTN number and is got final product.In the present embodiment, the reason of selecting for use the PSTN number to limit is to control simple, effective.Because the number resource of PSTN is limited, therefore can realize limitation function well, and this control procedure is simple, cost is low.
Step 1106, refusal are set up IP and are connected, and remove the PSTN that sets up and connect.
Step 1107 is determined respectively the IP sign with caller and called PSTN number binding, and is connected for the subscriber box A of caller and called IP sign representative sets up IP with subscriber box B, and preserves the other side's IP address in subscriber box A and subscriber box B respectively.
The operation of this step is identical with the operation of step 505 among the embodiment one, just repeats no more here.
Step 1108, called subscriber's box obtains local video image, utilizes this IP to connect after encoded and is transferred to calling subscriber's box, after the video flowing that calling subscriber's box receives self is decoded, show on the display device of this locality by video interface, realize monitoring.
Step 1109 when the monitoring side wishes to finish monitoring, is hung up PSTN and is connected, and the sip server transmission is removed corresponding IP and connected.
In this step, hang up PSTN connect with remove operation that IP is connected and embodiment one in identical, just repeat no more here.
So far, a Remote monitoring and control method flow finishes.By above-mentioned flow process as can be seen, adopt the mode of present embodiment, can carry out the remote monitoring operation, simplified user's operation greatly by simple PSTN terminal.
In above-mentioned monitoring business implementation method, still be the subscriber box IP sign binding PSTN number of monitored side, in fact, also can not be this subscriber box IP sign binding PSTN number, but
Caller PSTN terminal is when needs are monitored, transfer to the PSTN number of monitoring server, for example can be with ivr server as monitoring server, the PSTN switching equipment calls out the PSTN of caller PSTN terminal to the access ivr server, and imports the IP sign of monitored side or a binding name of this IP sign; Ivr server utilizes the mode in the previous embodiment, determine the IP sign of calling subscriber's box according to caller PSTN number, and determine the IP sign of monitored side according to the information of caller PSTN terminal input, utilize call control server to set up IP link, transmitting monitor data for the subscriber box of calling subscriber's box and monitored side.In this class was used, the ivr server in the PSTN network just played the booster action of authentication and link foundation.
The above-mentioned embodiment of method of the present invention in four kinds of different multimedia services that be.Certainly, above-mentioned four embodiment can realize in a network system fully, the concrete networking structure of its system as shown in figure 12, detect the PSTN number that the user transfers to by the PSTN terminal, promptly can realize the identification of type of service, thereby utilize corresponding flow process complete operation among above-mentioned four embodiment.
So far, IP connects foundation to be finished, and the IP connection was connected foundation with PSTN after, the mode among the application of aforementioned embodiment was carried out the transmission of multi-medium data.
Being preferred embodiment of the present invention only below, is not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (31)

1, a kind of realization method of multimedia services, it is characterized in that, in the multi-media service system that comprises video server, IP network, PSTN network, PSTN switching equipment and PSTN terminal, be the subscriber box that is used for the process IP agreement and carries out audio/video encoding/decoding that each user's setting links to each other with IP network, this method comprises:
Be each subscriber box in the described multi-media service system and each video server difference distributing IP sign, and with the PSTN number binding of each IP sign with at least one PSTN terminal;
When the PSTN terminal of having bound the IP sign is initiated the PSTN calling as caller, detect caller and called PSTN number, according to default binding relationship, determine that the caller and the called IP that bind respectively with caller and called PSTN number identify; According to caller and called IP sign, between the subscriber box of the subscriber box of caller IP sign representative and called IP sign representative or video server, set up IP and connect;
The PSTN switching equipment is that caller is set up PSTN with called PSTN terminal and is connected.
2, method according to claim 1 is characterized in that, the PSTN number binding of each IP sign and at least one PSTN terminal is set on the addressing server in IP network.
3, method according to claim 1 is characterized in that, described IP is designated SIP URI.
4, method according to claim 1 is characterized in that, when initiating caller PSTN terminal that PSTN calls out and not linking to each other with the subscriber box of its binding, this method further comprises: the ivr server that setting and PSTN network link to each other with IP network; When caller PSTN terminal is initiated the PSTN calling, before the called PSTN number of calling out, add the prefix of default ivr server correspondence;
The described PSTN of foundation connects and comprises: according to the prefix in the PSTN number of caller PSTN terminal dial-out, the PSTN switching equipment is called out described PSTN and is inserted ivr server; The called PSTN number of ivr server after according to prefix set up ivr server and is connected with the PSTN of called PSTN terminal room.
5, method according to claim 4 is characterized in that, described detection caller and called PSTN number are: ivr server receives and detects caller and called PSTN number.
6, method according to claim 5, it is characterized in that, the binding relationship that described basis is default, determining that the caller IP sign of binding respectively with caller and called PSTN number and called IP identify comprises: ivr server sends to addressing server in the IP network with caller and called PSTN number, the addressing server is determined the caller IP sign and the called IP sign of binding respectively with caller and called PSTN number according to the binding relationship of preserving.
7, method according to claim 6 is characterized in that, the described IP of foundation connects and comprises: preserve the IP sign of each IP terminal and the corresponding relation of IP address in advance on call control server; The addressing server sends called IP sign according to caller IP sign to caller IP terminal, and caller IP terminal sends call request to call control server, and subscriber box that request and called IP sign are represented or video server are set up IP and be connected; Call control server obtains caller and called IP sign, and according to the IP sign of preserving and the corresponding relation of IP address, determines caller and called IP address, and to be calling subscriber's box set up IP with called subscriber's box or video server is connected.
8, method according to claim 1, it is characterized in that, when initiating caller PSTN terminal that PSTN calls out and linking to each other with the subscriber box of its binding, described detection caller and called PSTN number comprise: described subscriber box detects the called PSTN number of caller PSTN terminal dial-out; Caller PSTN number is the PSTN number of the PSTN terminal that links to each other with subscriber box.
9, method according to claim 8, it is characterized in that, the binding relationship that described basis is default, determine that the caller IP sign and the called IP sign of binding respectively with caller and called PSTN number comprise: subscriber box identifies the IP sign of self as caller IP, send call request to call control server, request is set up IP with called IP terminal and is connected, and carries caller IP sign and called PSTN number; After call control server obtains called PSTN number, the called IP sign of addressing server lookup in IP network and called PSTN number binding.
10, method according to claim 9 is characterized in that, and is described according to caller and called IP sign, sets up the IP connection and comprise between caller and called IP terminal:
On call control server, preserve the IP sign of each IP terminal and the corresponding relation of IP address in advance;
Call control server identifies according to the called IP sign of obtaining from the addressing server with from the caller IP that calling subscriber's box obtains, and the corresponding relation of the IP that self preserves sign and IP address, determine caller IP address and called IP address, and set up IP for calling subscriber's box and called subscriber's box or video server and be connected.
According to claim 7 or 10 described methods, it is characterized in that 11, described corresponding relation in call control server preservation IP sign and IP address in advance comprises:
When in IP network, video server being set, the IP of the video server that in call control server, preserve to be provided with sign and be corresponding relation between this video server IP address allocated;
Subscriber box powers on the back to described call control server transmission register requirement, carries the IP sign and the IP network of self preserving and be self IP address allocated in this request, and call control server is preserved the IP sign of reception and the corresponding relation between the IP address.
12, method according to claim 1 is characterized in that, described IP network, PSTN network and control unit constitute media service;
Preserve in the control unit of media service each subscriber box and video server IP sign and IP address, reach and the PSTN number of its binding;
Described detection caller and called PSTN number comprise: after described PSTN terminal was initiated the PSTN calling, the control unit in the media service was determined caller and called PSTN number;
The described IP of foundation connects and comprises: the control unit in the media service is according to the IP address of preserving in advance and the PSTN number of binding, determine caller and called IP address, and between the subscriber box of the subscriber box of caller IP address correspondence and called IP address correspondence or video server, set up IP and be connected.
13, method according to claim 1, it is characterized in that, when having bound the PSTN hanging up terminal of IP sign, the PSTN that removes this PSTN terminal place connects, and removes the subscriber box of IP sign representative of PSTN number binding of this PSTN terminal or the IP at the current place of video server connects.
14, method according to claim 13 is characterized in that,
When the PSTN of on-hook terminal when not being connected with the subscriber box of its binding, the subscriber box of the PSTN number binding of this PSTN terminal of described dismounting or the IP at the current place of video server connect and comprise: ivr server detects on-hook signal, and passes through the PSTN number of the PSTN terminal of IP network notification address server on-hook; The addressing server is according to the binding relationship of preserving, and determines the IP sign that the PSTN number of the PSTN terminal of on-hook is bound; The addressing server sends the notice that dismounting IP connects to the subscriber box or the video server of the IP sign representative of determining, notification received subscriber box or video server are according to the peer IP address of preserving, send the disconnection connection requests to call control server, call control server is removed IP and is connected.
15, method according to claim 13 is characterized in that, after setting up described IP connection, this method further comprises: the IP address of preserving the opposite end in the subscriber box of having set up the IP connection or video server;
When the PSTN of on-hook terminal when linking to each other with the subscriber box of its binding, the subscriber box of the PSTN number binding of this PSTN terminal of described dismounting or the IP at the current place of video server connect and comprise: the subscriber box that links to each other with the PSTN terminal of on-hook detects on-hook signal, and according to the peer IP address of self preserving, send the disconnection connection requests to call control server, call control server is removed IP and is connected.
16, method according to claim 13 is characterized in that, described IP network, PSTN network and control unit constitute media service;
Preserve in the control unit of media service each subscriber box and video server IP sign and IP address, reach and the PSTN number of its binding;
The subscriber box of the PSTN number binding of this PSTN terminal of described dismounting or the IP at the current place of video server connect and comprise: the control unit of media service detects on-hook signal, and determine subscriber box or the current IP address of video server with the IP sign representative of its binding according to the PSTN number of the PSTN terminal of on-hook, and the IP address that is connected with the current IP of existence in this IP address, the IP that disconnects between two IP addresses determining connects.
17, method according to claim 1 is characterized in that, when carrying out video phone call or video conference,
Utilize described PSTN to be connected caller and called PSTN terminal room transmitting audio data;
Utilize described IP to connect transmitting video data.
18, method according to claim 17 is characterized in that, when carrying out video telephone, and the PSTN number that the called PSTN number of transfering to during the PSTN that caller PSTN terminal is initiated calls out is called PSTN terminal;
Caller and called IP sign are represented caller and called subscriber's box;
Utilizing described IP to connect transmitting video data comprises: caller and called subscriber's box obtain local video data respectively, connect by described IP and to be transferred to the other user's box, receive the other side be transferred to output to behind the video data decoding with display device that subscriber box links to each other on show.
19, method according to claim 17 is characterized in that, when carrying out video conference, during the PSTN that caller PSTN terminal is initiated called out, called PSTN number was a PSTN number of binding with videoconference server VCS;
Described called IP sign is represented VCS;
The PSTN terminal that a described PSTN number correspondence is set in the PSTN network is the ivr server that links to each other with the PSTN network with IP network, and a described PSTN number corresponding service is a video conference business;
Described set up PSTN and connect after, this method further comprises: ivr server determines that called PSTN number corresponding service is a video conference business, connect to the voice suggestion of caller PSTN terminal plays by described PSTN, and carry out authentication according to the information of PSTN terminal input, after authentication is passed through, caller PSTN terminal is added the appointment meeting-place that comprises in the information of attending a meeting of this PSTN terminal input, and described PSTN number of attending a meeting information and caller PSTN terminal is sent to VCS by IP network;
Describedly utilize described PSTN to be connected caller and called PSTN terminal room transmitting audio data comprises: speech data to each PSTN terminal transmission meeting-place of attending a meeting of specifying the meeting-place;
When setting up IP and connect, the further information of attending a meeting that sends according to described ivr server adds described appointment meeting-place with the subscriber box of the IP sign representative of the PSTN number binding of caller PSTN terminal;
Utilizing described IP to connect transmitting video data comprises: VCS is to the video data in each subscriber box transmission meeting-place of attending a meeting of specifying the meeting-place, described each attended a meeting subscriber box collection and the local video Data Transmission of encoding to VCS, shows after receiving the video data decoding of VCS transmission.
20, method according to claim 19, it is characterized in that, the described IP of foundation connects and comprises: VCS is according to the PSTN number and the described default binding relationship of the caller PSTN terminal of ivr server transmission, search IP sign with this PSTN number binding, and to call control server transmission call request, be connected for VCS sets up IP with the subscriber box of this IP that finds sign representative, the information of attending a meeting according to described ivr server sends adds described appointment meeting-place with this subscriber box.
21, method according to claim 19, it is characterized in that, when caller PSTN terminal is first PSTN terminal in described appointment meeting-place, after setting up the PSTN connection, this method further comprises: ivr server is created the PSTN territory meeting of specifying the meeting-place according to the conference parameters of caller PSTN terminal input; And described conference parameters sent to VCS by IP network, the conference parameters that VCS sends according to ivr server is created the IP territory meeting of specifying the meeting-place.
22, method according to claim 21, it is characterized in that, when comprising the attending a meeting during the PSTN terminal of appointment in the conference parameters of described reception, after described ivr server was created the PSTN territory meeting of specifying the meeting-place, this method further comprised: each specified PSTN terminal of attending a meeting of ivr server and conference parameters is set up PSTN and is connected;
After described VCS creates the IP territory meeting of specifying the meeting-place, this method further comprises: VCS is according to default binding relationship, the IP sign of the PSTN number binding of each PSTN terminal of attending a meeting that the inquiry conference parameters is specified, and set up IP by call control server with the subscriber box of each IP sign representative and is connected, it is added the appointment meeting-place.
23, method according to claim 19, it is characterized in that, describedly comprise: utilize the PSTN of the PSTN terminal room that IVR and each attend a meeting to be connected the speech data that obtains each PSTN terminal collection, be transferred to the PSTN terminal of attending a meeting accordingly behind the audio mixing to each speech data of attending a meeting PSTN terminal transmission meeting-place of specifying the meeting-place.
24, method according to claim 19, it is characterized in that, describedly comprise: according to the video way N of VCS with arbitrary this subscriber box processing of negotiation when setting up IP between subscriber box and being connected of attending a meeting to each video data of attending a meeting subscriber box transmission meeting-place of specifying the meeting-place, VCS is at other N the subscriber box of selection between subscriber box of attending a meeting except that this subscriber box, this N the subscriber box collection that VCS connect is received by IP and the local video transfer of data of coding are to described arbitrary subscriber box of attending a meeting, and described N is a positive integer.
25, method according to claim 24 is characterized in that, a described N subscriber box comprises the subscriber box as the chairman at least.
26, method according to claim 24, it is characterized in that, show behind the video data decoding of described each subscriber box reception VCS transmission of attending a meeting and comprise: described arbitrary subscriber box of attending a meeting, the N road video data that receives the VCS transmission is decoded respectively, and decoded video data is merged into a screen size shows.
27, method according to claim 19, it is characterized in that, this method further comprises: VCS preserves the IP sign of each subscriber box of attending a meeting, when VCS is connected unexpected the disconnection with the IP of the subscriber box of attending a meeting arbitrarily after, VCS initiatively makes a call to this subscriber box of attending a meeting by call control server, rebulid IP and connect, it is added specify the meeting-place.
28, method according to claim 19, it is characterized in that, when the arbitrary PSTN of attending a meeting terminal walks out, this method further comprises: after ivr server detects the on-hook signal of the arbitrary PSTN of attending a meeting terminal, disconnect PSTN with this PSTN terminal and be connected, and notify the information of withdrawing from the arena of this PSTN terminal of VCS by IP network; VCS is according to the corresponding relation of attend a meeting subscriber box and the PSTN number preserved in advance, and the information of withdrawing from the arena of arbitrary PSTN terminal of ivr server transmission, determine the subscriber box of attending a meeting of the PSTN number correspondence of described arbitrary PSTN terminal, initiate request to call control server, and find subscriber box and remove IP and be connected.
29, method according to claim 1 is characterized in that, when the video traffic that carries out provided for video information, the called PSTN number that caller PSTN terminal is transferred to was the 2nd PSTN number of binding with video information server VIS;
Described called IP sign is represented VIS;
The PSTN terminal that described the 2nd PSTN number correspondence is set in the PSTN network is the ivr server that links to each other with the PSTN network with IP network, and described the 2nd PSTN number corresponding service provides professional for video information;
After setting up the IP connection and PSTN be connected, this method further comprises: ivr server determines that called PSTN number corresponding service is a video conference business, connect the button number that receives user's input that the PSTN terminal sends by described PSTN, and described button number sent to described VIS by IP network, described VIS is according to the button that receives number definite selected media data, utilize described IP to connect and issue this media data to calling subscriber's box, subscriber box decoded media data are play.
30, method according to claim 1 is characterized in that, when the video traffic that carries out was remote monitoring, setting in advance the corresponding PSTN terminal of PSTN number of binding with the subscriber box of monitored side was monitoring server; The PSTN number of the subscriber box binding that called PSTN number is monitored side;
After setting up described IP connection, this method further comprises: the subscriber box of monitored side obtains local video data, connect by described IP and to be transferred to calling subscriber's box, the video data that the decoding of calling subscriber's box receives outputs on the display device that links to each other with calling subscriber's box and shows.
31, method according to claim 30 is characterized in that, preserves the corresponding caller PSTN list of numbers of having the right to monitor of PSTN number with monitored side in described monitoring server;
The described PSTN of foundation connects the back, set up IP connect before, this method further comprises: monitoring server is according to the caller PSTN list of numbers of having the right monitor corresponding with called PSTN number of caller PSTN number and self preservation, judge whether caller PSTN terminal has the right called PSTN number is monitored, if have the right, then continue to carry out the described operation that IP connects of setting up, otherwise the PSTN that port is set up connects, process ends.
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