CN101394446B - Application server, in-band dual tone multiple frequency signal detection method and system - Google Patents
Application server, in-band dual tone multiple frequency signal detection method and system Download PDFInfo
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- CN101394446B CN101394446B CN2008102188984A CN200810218898A CN101394446B CN 101394446 B CN101394446 B CN 101394446B CN 2008102188984 A CN2008102188984 A CN 2008102188984A CN 200810218898 A CN200810218898 A CN 200810218898A CN 101394446 B CN101394446 B CN 101394446B
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Abstract
The embodiment of the invention discloses an application server, a method and a system for detecting in-band dual tone multi-frequency signals. The method comprises the following steps: receiving service requests of the in-band dual tone multi-frequency signals; controlling the calling/ called media to connect to the media resource functional entity according to the service requests of the in-band dual tone multi frequency signals to enable the media resource function entity to connect to the calling/ called media and reporting to the application server after carrying out the in-band dual tone multi-frequency signal detection. By adopting the embodiment of the invention can shield the differences of access network elements or terminals and carry out an in-band DTMF detection and report to the AS.
Description
Technical field
The present invention relates to the communication technology, relate in particular to dual tone multiple frequency signal detection method and system in a kind of application server, the band.
Background technology
At present a lot of business have all been used DTMF (Dual Tone Multiple Frequency dual-tone multifrequency) input in the band, detection mode is to detect by terminal or access network element, for IMS (IPMultimedia Subsystem, the IP network multimedia system), terminal is meant PCSCF (Proxy Call SessionControl Function, the CSCF acting server) Xia Mian SIP IAD (SessionInitiation Protocol Intergrated Access Device session initiation protocol integrated access equipment), SIP (Session Initiation Protocol, session initiation protocol) terminal, software terminal etc., access network element is meant MGCF (Media Gateway Control Function, the MGCF entity), AGCF (AccessGateway Control Function, access gateway control function entity) etc., handle to AS by access network element or terminal to report then, but the form and the ability of access network element and terminal vary, not to detect by the interior dtmf signal of tenaculum, and has an ability of the AS of being reported to (Application Server, application server).
Therefore, the difference of shield terminal or access network element makes all terminals or access network element to provide and uses the business that DTMF detects that this is to carry out the problem that the DTMF related service must solve in the band.But existing technology also can't address this problem.
Summary of the invention
The embodiment of the invention provides dual tone multiple frequency signal detection method and system in a kind of application server, the band, can shield the difference of access network element or terminal, and DTMF detects and be reported to AS in being with.
Dual tone multiple frequency signal detection method in a kind of band that the embodiment of the invention provides comprises:
Touch-tone signal service request in the receiving belt;
According to touch-tone signal service request in the described band, the medium of control calling and called are connected on the media resource function entity, so that described media resource function entity connects the calling and called medium, and touch-tone signal reports application server after detecting in being with.
Correspondingly, a kind of application server that the embodiment of the invention provides comprises:
The service request receiver module is used for touch-tone signal service request in the receiving belt;
Control module, be used for according to touch-tone signal service request in the described band, the medium of control calling and called are connected on the media resource function entity, so that described media resource function entity connects the calling and called medium, and touch-tone signal reports application server after detecting in being with.
Touch-tone signal detection system in a kind of band that the embodiment of the invention provides comprises: access network element or terminal, application server and media resource function entity;
Described terminal is to described application server, perhaps by described access network element touch-tone signal service request in described application server sends band;
Described application server is used for control according to touch-tone signal service request in the described band, and the medium of calling and called are connected on the media resource function entity;
Described media resource function entity is used to connect the calling and called medium, reports described application server after touch-tone signal detected in described calling and called were with.
Implement the present invention, have following beneficial effect:
Terminal or access network element not in the tenaculum dtmf signal detect and when reporting AS, utilize MRF (the Media Resource Function in the network, the media resource function entity) finishes in the band dtmf signal and detect and be reported to AS, be convenient to professional the whole network and carry out.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of the interior dual tone multiple frequency signal detection method embodiment of band among the present invention;
Fig. 2 is the schematic flow sheet of interior another embodiment of dual tone multiple frequency signal detection method of band among the present invention;
Fig. 3 is the schematic flow sheet of the interior another embodiment of dual tone multiple frequency signal detection method of band among the present invention;
Fig. 4 is the schematic flow sheet of the interior another embodiment of dual tone multiple frequency signal detection method of band among the present invention;
Fig. 5 is the structural representation of the interior touch-tone signal detection system embodiment of band among the present invention;
Fig. 6 is the structural representation of application server embodiment among the present invention.
Embodiment
The invention process provides dual tone multiple frequency signal detection method and system in a kind of application server, the band, can shield the difference of access network element or terminal, and DTMF detects and be reported to AS in being with.
Referring to Fig. 1, the schematic flow sheet of dual tone multiple frequency signal detection method embodiment in the band that provides for the embodiment of the invention.
The method flow of present embodiment is as follows:
Touch-tone signal service request in the step 100, receiving belt;
Implement the interior dual tone multiple frequency signal detection method of band that present embodiment provides, terminal or access network element not in the tenaculum dtmf signal detect and when reporting AS, utilize the media resource function entity MRF in the network to finish dtmf signal detection in the band, and be reported to AS, be convenient to professional the whole network and carry out.
Referring to Fig. 2, be the schematic flow sheet of interior another embodiment of dual tone multiple frequency signal detection method of band among the present invention.
Step 200, caller request and called foundation are called out, and to carry out the DTMF business, ring-back tone is listened in caller; This process is well known to those skilled in the art, does not give unnecessary details at this;
Step 201, the MGCF/SIP AG of callee side sends 200 message to AS (B); This 200 message is represented called off-hook, and request and Calling Side carry out the DTMF business;
Step 202, according to described 200 message, AS (B) sends INVITE application conferencing resource (if MRF supports DTMF detection in not setting up meeting also can be with, then not needing to apply for conferencing resource) to MRF;
Step 203, MRF connects the calling and called medium;
Particularly, MRF joins in the meeting called, again caller is added meeting, then the media redirection operation is carried out in caller;
Step 204, calling and called are conversed normally.
Step 205, MRF detects the dialing information behind the user's communication;
Step 206, MRF reports to AS (B) with testing result.
Need to prove that the MGCF/SIP AG of Calling Side sends INVITE to AS (B); The flow process that AS (A) control caller medium are connected to MRF is identical with above-mentioned flow process, does not repeat them here.
Present embodiment has been described emphatically and has been connected the process that MRF realizes the interior dtmf signal detection of band and reports AS, implement present embodiment, no matter terminal or access network element support that dtmf signal detects and report AS in the tenaculum, all be connected on the MRF, utilize the MRF in the network to finish dtmf signal detection in the band, and be reported to AS, be convenient to professional the whole network and carry out.
Referring to Fig. 3, be the schematic flow sheet of interior another embodiment of dual tone multiple frequency signal detection method of band among the present invention.
In the present embodiment, will describe AS emphatically and at first carry out capability negotiation, and then the calling and called medium will be connected on the MRF, carry out the process that DTMF detects by MRF with access network element or terminal.Access network element can be MGCF in concrete enforcement, and terminal can be the terminal under the IMS in concrete enforcement.
The method flow of present embodiment is as follows:
Step 302, the AS that the MGCF/AGCF of Calling Side switches to conversing sends the INVITE that carries parameter in-band-dtmf; After AS receives this INVITE, return 100 response messages to MGCF;
Step 303, whether after AS receives INVITE, judging to expand in its supported header field has parameter in-band-dtmf, whether will control media resource function entity (MRF) with decision and connect the calling and called medium; Particularly, if expansion has parameter in-band-dtmf in the supported header field, then this AS does not need to control MRF and connects the calling and called medium, if do not have spreading parameter in-band-dtmf in the supported header field, then AS need control MRF connection calling and called medium;
Step 304, AS sends INVITE to the MGCF of callee side, and call proceeding to the MGCF of callee side, after the MGCF of callee side receives this INVITE, is returned 100 response messages to AS;
Step 305, the MGCF of callee side is to the terminal of callee side, and perhaps the MSC by callee side sends INVITE to the callee side terminal, with call proceeding on the terminal of callee side, after the terminal of callee side receives this INVITE, return 100 response messages to the MGCF of callee side;
Step 306, when the callee side terminal responds, the terminal of callee side is directly returned 200 message to the MGCF of callee side, to carry out the DTMF business;
Step 307, if DTMF detects and when reporting AS in the MGCF tenaculum of the terminal of callee side or callee side, the MGCF of callee side increases the supported header field in 200 message, and at supported header field spreading parameter in-band-dtmf, this parameter is used to indicate the interior dtmf signal of terminal called tenaculum to detect and has the ability that reports AS; Need to prove that this parameter can have other expression mode according to actual conditions, be with interior dtmf signal detection and report AS just passable as long as there is spreading parameter to express support for.
Step 308, the AS that the MGCF of callee side switches to conversing sends 200 message that carry parameter in-band-dtmf;
Step 309, whether after AS receives 200 message, judging to expand in its supported header field has parameter in-band-dtmf, whether will control the medium that MRF connects calling and called with decision; Particularly, if expansion has parameter in-band-dtmf in the supported header field, then this AS does not need to control MRF and connects the calling and called medium, if do not have spreading parameter in-band-dtmf in the supported header field, then AS need control MRF connection calling and called medium;
Step 310, AS sends 200 message to the MGCF of Calling Side, with call proceeding to the MGCF of Calling Side;
Step 311, the MGCF of Calling Side is to the terminal of Calling Side, perhaps the MSC by Calling Side sends 200 message to the callee side terminal, with call proceeding on the terminal of Calling Side.
Present embodiment has been described the access network element of AS and calling and called or the process that terminal is carried out capability negotiation emphatically, implement present embodiment, terminal or access network element not in the tenaculum dtmf signal detect and when reporting AS, utilize the MRF in the network to finish dtmf signal detection in the band, and be reported to AS, be convenient to professional the whole network and carry out.
Referring to Fig. 4, be the schematic flow sheet of the interior another embodiment of dual tone multiple frequency signal detection method of band among the present invention.
In the present embodiment, connect the process that the interior dtmf signal of MRF realization band detected and reported AS with focusing on to describe, access network element can be MGCF or SIP AG in concrete enforcement.
As shown in Figure 4, AS (A) is in calling procedure, whether the inspection caller has contracted needs to detect the business of dtmf signal in the band, if it is signatory, need then to judge whether terminal or access network element have the ability of supporting dtmf signal to detect and report AS,, then need AS control MRF to connect the calling and called medium if do not have, after MRF connects the calling and called medium, and the dialing information behind the detection user's communication.Need to prove that from user's angle, dialing information transmits by DTMF in being with, therefore detecting dialing information promptly is to the detection with interior dtmf signal.The function of AS (B) is identical with AS (A) with effect, will describe the interior dual tone multiple frequency signal detection method of band of present embodiment below in detail.
Step 400, caller request and called foundation are called out, and ring-back tone is listened in caller; This process is well known to those skilled in the art, does not give unnecessary details at this;
Step 401, the MGCF/SIP AG of callee side increases the supported header field in 200 message, and at supported header field spreading parameter in-band-dtmf;
Particularly, behind callee side terminal off-hook, if DTMF detects and when reporting AS (B) in the MGCF/SIP AG tenaculum of the terminal of callee side or callee side, the MGCF/SIP AG of callee side increases the supported header field in 200 message, and at supported header field spreading parameter in-band-dtmf, this parameter is used to indicate the interior dtmf signal of terminal called tenaculum to detect and has the ability that reports AS; Need to prove that this parameter can have other expression mode according to actual conditions, be with interior dtmf signal detection and report AS just passable as long as there is spreading parameter to express support for.
Step 402, the MGCF/AGCF of callee side sends 200 message that carry parameter in-band-dtmf to AS (B);
Step 403, whether after AS (B) receives 200 message, judging to expand in its supported header field has parameter in-band-dtmf, whether will control MRF with decision and connect the calling and called medium; Particularly, if expansion has parameter in-band-dtmf in the supported header field, then AS (B) does not need to control MRF and connects the calling and called medium, if do not have spreading parameter in-band-dtmf in the supported header field, then AS (B) needs control MRF to connect the calling and called medium;
The idiographic flow that AS (B) control MRF connects the calling and called medium is:
Step 404, AS (B) sends INVITE application conferencing resource (if MRF supports DTMF detection in not setting up meeting also can be with, then not needing to apply for conferencing resource) to MRF;
Step 405, MRF connects the calling and called medium;
Particularly, MRF joins in the meeting called, again caller is added meeting, then the media redirection operation is carried out in caller;
Step 406, calling and called are conversed normally.
Step 407, MRF detects the dialing information behind the user's communication;
Step 408, MRF reports to AS (B) with testing result.
Need to prove, if the terminal of Calling Side also not in the tenaculum DTMF detect, then to be connected to the flow process of MRF identical with above-mentioned flow process for AS (A) control caller medium, do not repeat them here.
Present embodiment has been described emphatically and has been connected the process that MRF realizes the interior dtmf signal detection of band and reports AS, implement present embodiment, terminal or access network element not in the tenaculum dtmf signal detect and when reporting AS, utilize the MRF in the network to finish dtmf signal detection in the band, and be reported to AS, be convenient to professional the whole network and carry out.
Referring to Fig. 5, be the structural representation of the interior touch-tone signal detection system of band among the present invention.
The system of present embodiment comprises: access network element 2 or terminal 1, application server 3 and media resource function entity 4;
Described terminal 1 perhaps sends touch-tone signal service request in the band by described access network element 2 to described application server 3 to described application server 3;
Described application server 3 is used for according to touch-tone signal service request in this band, and the medium of control calling and called are connected on the media resource function entity 4;
Described media resource function entity 4 is used to connect the calling and called medium, reports described application server 3 after touch-tone signal detected in described calling and called were with.
Alternatively, described application server 3 at first carries out capability negotiation with the access network element 2 or the terminal 1 of described Calling Side or callee side, knows whether the interior touch-tone signal of tenaculum detects for described access network element 2 or terminal 1;
Be exemplified as during specific implementation: access network element 2 increases the supported header field in INVITE, and at supported header field spreading parameter in-band-dtmf, this parameter promptly is used for the tenability that touch-tone signal detects in the index strip;
Described application server 3 is when knowing that described terminal 1 or access network element 2 are not supported the DTMF detection and be reported to AS, the medium of control calling and called are connected on the media resource function entity 4, so that described media resource function entity 4 connects the calling and called medium, and touch-tone signal reports described application server 3 after detecting in being with;
Be exemplified as during specific implementation: whether AS judges to expand in its supported header field parameter in-band-dtmf, whether will control MRF with decision and connect the calling and called medium; Particularly, if expansion has parameter in-band-dtmf in the supported header field, then this AS does not need to control MRF and connects the calling and called medium, if do not have spreading parameter in-band-dtmf in the supported header field, then AS need control MRF connection calling and called medium.
Need to prove that access network element can be MGCF in specific implementation, it is used for being responsible for carrying out intercommunication with existing network equipment, and mobile subscriber, the fixed-line subscriber of existing network is linked into IMS;
Can SIP IAD, sip terminal, software terminal below the PCSCF etc. in the time of the specific implementation of terminal;
Application server (AS) is a network side core control network element, provides based on DTMF business of triggering in the band, is DTMF detection signal and the core control network element that reports in the conversation in this enforcement;
Media resource function entity (MRF), it is used to provide the netcast media information, and encoding and decoding conversion in the present embodiment, is utilized the function that collects the digits in the band of MRF to realize that the DTMF in the conversation detects, and is reported AS by Mr.
Implement the interior touch-tone signal detection system of band that present embodiment provides, terminal or access network element not in the tenaculum dtmf signal detect and when reporting AS, utilize the MRF in the network to finish dtmf signal detection in the band, and be reported to AS, be convenient to professional the whole network and carry out.
Referring to Fig. 6, be the structural representation of application server embodiment among the present invention.
This application server comprises:
Service request receiver module 30 is used for touch-tone signal service request in the receiving belt;
Alternatively, described application server comprises:
Capability negotiation module 32 is carried out capability negotiation with access network element or terminal, knows whether the interior touch-tone signal of tenaculum detects for access network element or terminal;
Control module 33, in access network element or terminal when touch-tone signal does not detect in the tenaculum, the medium of control calling and called are connected on the media resource function entity, so that described media resource function entity connects the calling and called medium, and touch-tone signal reports application server after detecting in being with.
Capability negotiation module 32 specifically comprises:
Message sink unit 320 receives the notification message from access network element or terminal, carries the tenability indication information that touch-tone signal detects in the band in the described notification message; For example, access network element MGCF/AGCF increases the supported header field in INVITE, and at supported header field spreading parameter in-band-dtmf, this parameter promptly is used for the tenability that touch-tone signal detects in the index strip; Message sink unit 300 promptly is used to receive the INVITE from MGCF/AGCF.
Ability is known unit 321, when touch-tone signal detects in described tenability indication information indication access network element or terminal tenaculum, knows that touch-tone signal detects in access network element or the terminal tenaculum; In described tenability indication information indication access network element or terminal when touch-tone signal does not detect in the tenaculum, know access network element or terminal not in the tenaculum touch-tone signal detect.
Implement the application server that present embodiment provides, terminal or access network element not in the tenaculum dtmf signal detect and when reporting AS, AS control MRF finishes that dtmf signal detects in the band, and is reported to AS, is convenient to professional the whole network and carries out.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential hardware platform, can certainly all implement by hardware.Based on such understanding, all or part of can the embodying that technical scheme of the present invention contributes to background technology with the form of software product, this computer software product can be stored in the storage medium, as ROM/RAM, magnetic disc, CD etc., comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the described method of some part of each embodiment of the present invention or embodiment.
Above disclosed is a kind of preferred embodiment of the present invention only, can not limit the present invention's interest field certainly with this, and therefore the equivalent variations of doing according to claim of the present invention still belongs to the scope that the present invention is contained.
Claims (6)
1. the interior dual tone multiple frequency signal detection method of band is characterized in that, comprising:
Touch-tone signal service request in the receiving belt;
Carry out capability negotiation with access network element or terminal, know whether the interior touch-tone signal of tenaculum detects for access network element or terminal;
According to touch-tone signal service request in the described band, in access network element or terminal when touch-tone signal does not detect in the tenaculum, the medium of control calling and called are connected on the media resource function entity, so that described media resource function entity connects the calling and called medium, and touch-tone signal reports application server after detecting in being with;
Described and access network element or terminal are carried out capability negotiation, know access network element or terminal whether in the tenaculum touch-tone signal detect, comprising:
Reception carries the tenability indication information that touch-tone signal detects in the band from the notification message of access network element or terminal in the described notification message;
When touch-tone signal detects in described tenability indication information indication access network element or terminal tenaculum, know that touch-tone signal detects in access network element or the terminal tenaculum;
In described tenability indication information indication access network element or terminal when touch-tone signal does not detect in the tenaculum, know access network element or terminal not in the tenaculum touch-tone signal detect.
2. dual tone multiple frequency signal detection method in the band as claimed in claim 1, it is characterized in that, in the notification message of reception from access network element or terminal, described notification message is in the call establishment, the access network element of Calling Side or terminal send to the INVITE of application server, or the access network element of callee side or terminal send to application server 200 message.
3. dual tone multiple frequency signal detection method in the band as claimed in claim 2, it is characterized in that, expansion has parameter, this parameter to be used to indicate touch-tone signal detection in access network element or the terminal tenaculum in the supported header field of described INVITE or 200 message.
4. an application server is characterized in that, comprising:
The service request receiver module is used for touch-tone signal service request in the receiving belt;
The capability negotiation module is carried out capability negotiation with access network element or terminal, knows whether the interior touch-tone signal of tenaculum detects for access network element or terminal;
Control module, according to touch-tone signal service request in the described band, in access network element or terminal when touch-tone signal does not detect in the tenaculum, the medium of control calling and called are connected on the media resource function entity, so that described media resource function entity connects the calling and called medium, and touch-tone signal reports application server after detecting in being with;
Described capability negotiation module comprises:
The message sink unit receives the notification message from access network element or terminal, carries the tenability indication information that touch-tone signal detects in the band in the described notification message;
Ability is known the unit, when touch-tone signal detects in described tenability indication information indication access network element or terminal tenaculum, knows that touch-tone signal detects in access network element or the terminal tenaculum; In described tenability indication information indication access network element or terminal when touch-tone signal does not detect in the tenaculum, know access network element or terminal not in the tenaculum touch-tone signal detect.
5. the interior touch-tone signal detection system of band is characterized in that, comprising: access network element or terminal, application server and media resource function entity;
Described terminal is to described application server, perhaps by described access network element touch-tone signal service request in described application server sends band;
Described application server is used for according to touch-tone signal service request in the described band, and the medium of control calling and called are connected on the media resource function entity;
Described media resource function entity is used to connect the calling and called medium, reports described application server after touch-tone signal detected in described calling and called were with.
6. touch-tone signal detection system in the band as claimed in claim 5 is characterized in that described application server comprises:
The service request receiver module is used for touch-tone signal service request in the receiving belt;
Control module, be used for according to touch-tone signal service request in the described band, the medium of control calling and called are connected on the media resource function entity, so that described media resource function entity connects the calling and called medium, and touch-tone signal reports application server after detecting in being with.
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| CN101860630B (en) * | 2010-06-22 | 2014-07-02 | 中兴通讯股份有限公司 | Transmission method and system of out-of-band dual tone multiple frequency (DTMF) signal |
| 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 |
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| CN101175303A (en) * | 2006-11-01 | 2008-05-07 | 华为技术有限公司 | System and device for implementing core net resource sharing and calling method of the system |
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