CN101110864B - Method for providing dial-in service using medium service apparatus - Google Patents
Method for providing dial-in service using medium service apparatus Download PDFInfo
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- CN101110864B CN101110864B CN2006100993698A CN200610099369A CN101110864B CN 101110864 B CN101110864 B CN 101110864B CN 2006100993698 A CN2006100993698 A CN 2006100993698A CN 200610099369 A CN200610099369 A CN 200610099369A CN 101110864 B CN101110864 B CN 101110864B
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Abstract
The present invention discloses a method of provide a dialing service by adopting the media server, which comprises the following steps that the connection of the service is established by an application server control terminal and the media server, the media server performs the media negotiation according to the control signaling, to finish the dialing mode matching between the media server and the terminal; the media server establishes a media connection according to the media negotiation results, and records the related dialing mode simultaneously; the application server initiates a request when the service needs to perform the dialing service, the request has number information, and the media server performs a dialing resource switching after receiving the number; after the dialing is finished, the media server returns the processing results to the application server, and closes the dialing resource. By using the dialing service provided by the media server, the present invention greatly enhances the flexibility of service, improves the media quality, and ensures the user satisfaction.
Description
Technical field
The present invention relates to a kind of method of next generation network communication, specifically, relate to a kind of method of in the next generation network system, utilizing media server that dial-up service is provided for business.
Background technology
In telephone communication network, generally by the processing of dialling of Dual Tone Multifrequency signal; Also can utilize simultaneously touch-tone signal to carry out the information interaction of some low rates,, unified in intelligent network business is used this function is classified as dial-up service such as the display of calling number etc.
Existing be in the next generation network system of core with the soft switch, business is handled and is controlled by application server, when commencing business, for the two-stage dialing function of calling out extension set, business can pass to soft switch with general number and extension simultaneously by special field, soft switch is by the control Tandem Gateway, after the calling of finishing exchange, the touch-tone signal processing capacity of using Tandem Gateway to provide is finished the two-stage dialing to extension set, with regard to above process, this dial-up service that belongs to the call proceeding process provides, can only when setting up calling, support, behind call setup, carry out dial-up operation if desired, then can not make in this way.
The dialing defective under above-mentioned soft switch control, utilize Tandem Gateway to provide dialing to also have other defect, be respectively described below:
At first, after network IPization, various IP terminals occur, because control separates with carrying, Media Stream not necessarily can insert by Tandem Gateway, and in this case, business will be carried out dial-up service by Tandem Gateway, must carry out the Media Stream handover operation, IP terminal and Tandem Gateway are set up media link, done control flow so complicated, increased processing delay, influence speech quality, reduced user satisfaction.
Secondly, the dial feature that provides for Tandem Gateway, mainly be to call out control in order to set up, if support service application flexibly, need provide the application server of service logic very strong control interaction capabilities to be arranged, and do the coupling of the equipment that strengthened like this, also deviate from the thought that soft switch control separates with carrying by soft switch and Tandem Gateway, obscured the control logic of equipment room, can't obtain the approval of industry this framework.
Once more, after the network IPization, the touch-tone signal that on circuit, transmitted in the past, can only be to carry on IP network by Media Stream, the technology of using is to carry by real time streaming transport protocol (RTP) at present, and be divided into two kinds of methods and provide, a kind of is the audio frequency in-band method, the data that this mode comprises are the dual-tone multifrequency voice of the standard that generates in advance, but because Network Transmission is unreliable, packet loss or network delay will make the voice data distortion of receiving to produce error code; Another kind is that the RTP that passes through by RFC2833 definition carries special header and represents various audio signals, and the perfect redundant treatment mechanism that prevents packet loss is provided, and guarantees the high reliability of signal transmission.Brought thus under the IP network environment, transferring dual-tone multi-frequency must be carried out media negotiation, to guarantee that receiving-transmitting sides uses identical coded system to handle, this has further strengthened the difficulty that application server is directly controlled Tandem Gateway, also, be unfavorable for the management and the maintenance of system the reduction of network hierarchy thought.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
The purpose of this invention is to provide a kind of method of utilizing media server that dial-up service is provided, based on the application of intelligent network, for carrying out of business provides dial-up service flexibly.
Technical scheme of the present invention comprises:
A kind of method of utilizing media server that dial-up service is provided may further comprise the steps:
A. business is connected by application server controls terminal and media server, described media server carries out media negotiation according to the control signaling, finish the coupling of media server and terminal room dial mode, described coupling is meant that media server obtains the dial mode information of terminal by media negotiation, differentiation is to use the audio frequency in-band method also to be to use the RFC2833 coded system, determines the dial mode of media server then according to the dial mode of terminal;
B. media server is set up medium and is connected according to the media negotiation result, writes down relevant dial mode simultaneously;
When c. service needed was carried out dial-up service, application server was initiated the dialing request, has the number information that needs send in the request, and described media server switches to the dial-up resource service after receiving this dialing request;
D. after dialing was finished, described media server returned result and gives application server, closes dial-up resource simultaneously.
Described method wherein, also comprises:
After business was finished, described application server sent and discharges the medium connection request, and described media server discharges the media resource that promising these medium of institute are handled reservation, comprises dial-up resource, return results after finishing, service ending.
Described method, wherein, described step C also comprises:
When using the audio frequency in-band method to send, judge that sending number is the touch-tone signal of standard, or professional self-defining audio signal, if the touch-tone signal of standard, described media server uses dual tone multi-frequency signal generator to produce voice data; If professional self-defining audio signal, media server uses audio-frequency generator to produce voice data.
Described method, wherein, described step C also comprises:
When using the RFC2833 mode to send, the method for use agreement regulation generates data, and not distinguishing and sending number is the touch-tone signal of standard, still professional self-defining audio signal.
Described method, wherein, if send professional self-defining audio signal, distance terminal needs same reception and the parsing of supporting these signals.
A kind of method of utilizing media server that dial-up service is provided provided by the present invention, the dial-up service of utilizing media server to provide, concentrate and finished dial mode media negotiation under the IP network, number systematic function, can support different terminals to dock the requirement of the coding mode that collects the digits, guarantee business support the whole network user; Realize internal unity control for dial-up resource and other media resources that media server provides, after setting up media link, business can be used the dial-up service function arbitrarily, strengthened professional flexibility greatly, call for different media resources simultaneously, only need the switching media resource, connect without switching media stream, improve media quality, guaranteed user satisfaction.
Description of drawings
Fig. 1 is the networking schematic diagram that business function is provided based on soft exchanging system of the present invention;
Fig. 2 is the process chart that utilizes media server to realize dial-up service of the present invention.
Embodiment
Below in conjunction with accompanying drawing, describe implementation method of the present invention and system calling flow process in detail.
The method of utilizing media server that dial-up service is provided of the present invention, realize according to the following steps:
At first, business is connected by application server controls terminal and media server, and media server at first carries out media negotiation according to the control signaling, finishes the coupling of media server and terminal room dial mode;
Described media server is set up medium and is connected according to the media negotiation result, writes down relevant dial mode simultaneously;
When service needed is carried out dial-up service, the dialing request is initiated in application service, have the number information that needs send in the request, media server carries out the dial-up resource switching after receiving this number, when using the audio frequency in-band method to send, judge that sending number is the touch-tone signal of standard, or professional self-defining audio signal, if the touch-tone signal of standard, media server uses dual tone multi-frequency signal generator to produce voice data, if professional self-defining audio signal, media server uses audio-frequency generator to produce voice data, and when using the RFC2833 mode to send, the method for use agreement regulation generates data, this mode is not distinguished and sent number is the touch-tone signal of standard, still professional self-defining audio signal;
After dialing was finished, media server returned result and gives application server, closes dial-up resource simultaneously;
Business is finished, and application server send to discharge the medium connection request, and media server discharges the media resource that promising these medium of institute are handled reservation, comprises dial-up resource, return results after finishing, service ending.
The purpose of the inventive method is to finish the dial feature that service needed is supported under the IP network environment, can finish the media negotiation function of dialing by this function, send the touch-tone signal or the professional self-defining audio signal of standard simultaneously according to business demand, in professional control procedure, dial-up resource and other media resource equities are called, and operation flow is simply clear.
The communication network equipment that is mainly concerned with in the inventive method implementation process has, as shown in Figure 1:
Soft switch: kernel call control member in the next generation network, be used to finish CCF, professional trigger mechanism is provided simultaneously, can initiate service request to application server according to professional trigger policy.
Application server: be the core component of intelligent network, storaging user data and service logic; Trigger operation flow according to service logic, in the Business Processing process, control media server as required media resource is provided, thereby realize various business function.
Media server: in next generation network, unification provides the media resource processing capacity, accepts the control of application server, and its medium connect by IP bearer network and gateway or IP terminal interaction, have embodied the networking thought that control separates with carrying.
Tandem Gateway: be used to realize traditional telephone network interconnected to flexible exchanging network.
The method of utilizing media server that dial-up service is provided of the present invention, as shown in Figure 2, its key step is:
A. application server is at first set up business, and this service needed is used the dial-up service function;
B. the specific access code of customer call is called out control and the professional function that triggers by soft switch, triggers this business that enters.Application server is responsible for the logic of managing business, at first finish the Media Stream connection procedure of user to media server, in this process, at first finish media consultation process, obtain dial mode information by this process media server, mainly be to distinguish to be to use the audio frequency in-band method, also be to use the RFC2833 coded system, the media capability description field that mainly relies on media description agreement (SDP) to provide for the media consultation process of present dial mode defines and resolves, these information are included in the control signaling of setting up media link, and application server is to the control protocol SIP of media server at present, MGCP and H.248 bearing function to SDP information all can be provided;
C. business is carried out the dial-up service step, application server sends the number information that needs transmission by the control signaling to media server, and the constituted mode of number, the medium dial mode that media server obtains according to step b, carrying out dial-up resource switches, when using the audio frequency in-band method to send, judge that sending number is the touch-tone signal of standard, or professional self-defining audio signal, if the touch-tone signal of standard, media server uses dual tone multi-frequency signal generator to produce voice data, if professional self-defining audio signal, media server uses audio-frequency generator to produce voice data; When using the RFC2833 mode to send, the method for use agreement regulation generates data, and not distinguishing and sending number is the touch-tone signal of standard, still professional self-defining audio signal;
D. after finishing dial-up service, media server is closed dial-up resource, sends results messages to application server simultaneously;
E. application server carries out subsequent business operation according to the result, notes can using the dial-up service function equally in the subsequent business operation process, and this is with repeating step d, e process;
F. user's on-hook or service logic finish, application service control media server discharges the media link of setting up, and media server discharges the media resource that promising these medium of institute are handled reservation simultaneously, comprises dial-up resource, return results after finishing, this operation flow finishes.
When step c, if send professional self-defining audio signal, this depends on reception and parsing that distance terminal also can be supported these signals equally, and this can provide abundanter information interaction means.
The dial-up service that the inventive method utilizes media server to provide, the professional various media resources that use unified interface control media server to provide make and can call the dial-up service function at any time in the business procedure, have improved professional flexibility greatly.
The dial mode selection function of being supported by media negotiation can guarantee the support of dial feature to different terminals simultaneously, finishes professional support to the whole network user.
Implementation method of the present invention, no matter be to switch to the dial-up service function from other medium processing procedures, still switch to other medium processing procedures from the dial-up service function, made full use of media server to media resource unified management scheduling mechanism, the just inner switching of finishing media resource, and can not influence the media link of having set up, avoided the Media Stream handover operation, guarantee the media link quality, improved user satisfaction.The unified resource control signaling of application server use is simultaneously finished the control to media server, has simplified operation flow, has lowered business development and system maintenance difficulty.
To sum up, the media server that utilizes that the present invention discussed provides the method for dial-up service, for the business that needs dial-up service provides the perfect functions support, the diversity and the professional flexibility of carrying out of business function have been promoted greatly, strengthen the affinity between business and user, ensured professional application prospect on market, improved the market competitiveness, have tangible economic benefit and social benefit, significantly improved the network operation income and the market competitiveness.
Should be understood that above-mentioned explanation at specific embodiment is comparatively detailed, can not therefore think the restriction to scope of patent protection of the present invention, scope of patent protection of the present invention should be as the criterion with claims.
Claims (5)
1. method of utilizing media server that dial-up service is provided may further comprise the steps:
A. business is connected by application server controls terminal and media server, described media server carries out media negotiation according to the control signaling, finish the coupling of media server and terminal room dial mode, described coupling is meant that media server obtains the dial mode information of terminal by media negotiation, differentiation is to use the audio frequency in-band method also to be to use the RFC2833 coded system, determines the dial mode of media server then according to the dial mode of terminal;
B. media server is set up medium and is connected according to the media negotiation result, writes down relevant dial mode simultaneously;
When c. service needed was carried out dial-up service, application server was initiated the dialing request, has the number information that needs send in the request, and described media server switches to the dial-up resource service after receiving this dialing request;
D. after dialing was finished, described media server returned result and gives application server, closes dial-up resource simultaneously.
2. method according to claim 1 is characterized in that, also comprises:
After business was finished, described application server sent and discharges the medium connection request, and described media server discharges the media resource that promising these medium of institute are handled reservation, comprises dial-up resource, return results after finishing, service ending.
3. method according to claim 2 is characterized in that, described step C also comprises:
When using the audio frequency in-band method to send, judge that sending number is the touch-tone signal of standard, or professional self-defining audio signal, if the touch-tone signal of standard, described media server uses dual tone multi-frequency signal generator to produce voice data; If professional self-defining audio signal, media server uses audio-frequency generator to produce voice data.
4. method according to claim 2 is characterized in that, described step C also comprises:
When using the RFC2833 mode to send, the method for use agreement regulation generates data, and not distinguishing and sending number is the touch-tone signal of standard, still professional self-defining audio signal.
5. according to claim 3 or 4 described methods, it is characterized in that if send professional self-defining audio signal, distance terminal needs same reception and the parsing of supporting these signals.
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| CN2006100993698A CN101110864B (en) | 2006-07-19 | 2006-07-19 | Method for providing dial-in service using medium service apparatus |
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| CN2006100993698A CN101110864B (en) | 2006-07-19 | 2006-07-19 | Method for providing dial-in service using medium service apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102571718A (en) * | 2010-12-20 | 2012-07-11 | 中国移动通信集团浙江有限公司 | Voice call handover method based on IMS network and handover application server |
| CN103747007A (en) * | 2014-01-21 | 2014-04-23 | 上海斐讯数据通信技术有限公司 | Second-time dialing receiving method |
| CN107453958B (en) * | 2017-09-22 | 2021-05-04 | 台州市吉吉知识产权运营有限公司 | Method and system for testing internet experience of multiple dialing modes through real network |
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| WO2006004844A2 (en) * | 2004-06-30 | 2006-01-12 | Glenayre Electronics, Inc. | System and method for outbound calling from a distributed telecommunications platform |
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Patent Citations (4)
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| CN1489354A (en) * | 2002-10-09 | 2004-04-14 | ����ͨѶ�ɷ�����˾ | Method and system for realizing inter communication of telecommunication business between isomerized networks |
| CN1529464A (en) * | 2003-10-13 | 2004-09-15 | 杨万高 | Multimedia network communication method |
| WO2006004844A2 (en) * | 2004-06-30 | 2006-01-12 | Glenayre Electronics, Inc. | System and method for outbound calling from a distributed telecommunications platform |
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