CN102055516B - DTMF (dual-tone multifrequency) sound transferring method and device - Google Patents
DTMF (dual-tone multifrequency) sound transferring method and device Download PDFInfo
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- CN102055516B CN102055516B CN200910110038.3A CN200910110038A CN102055516B CN 102055516 B CN102055516 B CN 102055516B CN 200910110038 A CN200910110038 A CN 200910110038A CN 102055516 B CN102055516 B CN 102055516B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/18—Service support devices; Network management devices
- H04W88/181—Transcoding devices; Rate adaptation devices
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Abstract
The invention relates to a DTMF (dual-tone multifrequency) sound transferring method, which comprises the following steps: confirming a forward RTP (real-time protocol) grouping from a media gateway as a DTMF frame through a BSS (base station subsystem) after creating a voice calling, and then processing the DTMF frame so as to obtain a corresponding in-band DTMF signaling frame and send the in-band DTMF signaling frame to an MS (memory system). The invention also provides a DTMF sound transferring device, which comprises a BSS, wherein the BSS comprises a detection unit, a processing unit and a sending unit; the detecting unit is used for detecting the forward RTP grouping from the media gateway as the DTMF frame after creating the voice calling; and the processing unit is used for processing the DTMF frame so as to obtain the corresponding in-band DTMF signaling frame and send the in-band DTMF signaling frame to the MS through the sending unit. Under the transferring mode of IP exchange technique, the BSS digitally processes the DTMF in the forward RTP grouping from the media gateway into the in-band DTMF signaling frame and sends to the MS in the manner of in-band DTMF signaling frame, so as to successfully send the DTMF digital A-D in the forward RTP grouping from the media gateway to the MS, overcome the defects of the prior art that the DTMF digital A-D (analog-digital) can not be sent to the MS, and efficiently realize various services related to DTMF.
Description
Technical field
The present invention relates to transfer approach and the device of traditional mobile terminal territory (the LMSD:LegacyMobile Station Domain) dtmf tone in CDMA2000 system.
Background technology
Packet-based CDMA2000BSS (Base Station Subsystem base station sub-system) can adopt IP (Internet Protcol Internet protocol) switching technology to be linked into the CDMA2000 core net realized based on software exchange.Compared with traditional circuit domain MSS (Mobile Switching Subsystem mobile switch subsystem) system, the maximum change of CDMA2000 core net exchanged based on software is being separated of Call-Control1 and carrying, TDM (Time DivisionMultiplexting time division multiplexing) technology is replaced by Packet Based Network technology, traditional MSC (Mobile Switching Center mobile switching centre) network element is evolved into MSCe (Mobile Switching Center emmulation mobile switching centre simulator) and MGW (Media GateWay media gateway), MSCe provides Call-Control1 and mobile management function, MGW provides media control function, and transfer resource is provided, there is media flow process operating function.
Specify in IOS (InterOperability Specification) V5.0 agreement, the transmission between MS (Mobile Station) and MSC of DTMF numeral has two kinds of modes, one is use dtmf signaling in band, and now, BSS does not need to do any action.Two is eating dishes without rice or wine to adopt Send Burst DTMF transmission of messages, in this case, adopt original TDM transmission means, when realizing the transmission of dtmf tone, CDMA Access Network oppositely need convert the DTMF received from space interface signaling numeral to pulse code modulation (Pulse Coded Modulation:PCM) code stream by TDM circuit transmission to media gateway by vocoder, forward direction needs from the pcm stream that TDM circuit transmits, to detect dtmf tone in band by vocoder, and BSS passes to terminal the DTMF numeral obtained by Send BurstDTMF message of eating dishes without rice or wine, adopt the transmission means of IP switching technology afterwards, between CDMA Access Network and MGW, no longer adopt pcm stream mode to transmit, and need directly speech frame to be transmitted by IP network as RTP (Real-Time Transport Protocol RTP) grouping according to agreement, now, for dtmf tone, encapsulation decapsulation need be carried out according to RFC4733 agreement in IP network transmission, the DTMF received from space interface signaling numeral oppositely need encapsulate according to RFC4733 agreement by CDMA Access Network, be transferred to media gateway on ip networks, the RFC4733 protocol frame of coming from IP network need be carried out decapsulation by forward direction, the DTMF numeral obtained is passed to terminal by Send Burst DTMF message of eating dishes without rice or wine, but, here a problem is just had, according to the RFC4733 agreement in RTP grouping, define 0-9, *, #, A-D is totally 16 DTMF numerals, but eating dishes without rice or wine to define only 0-9 in Send Burst DTMF message, *, # is totally 12 DTMF numerals, now, if BSC receives the DTMF numeral of A-D, terminal cannot be passed to.
Summary of the invention
Technical problem to be solved by this invention is to provide in a kind of CDMA2000 of being applied to system the transfer approach of the dtmf tone that correctly can process the DTMF numeral A-D sending MS in RTP grouping to.A kind of conveyer realizing the dtmf tone of the transfer approach of above-mentioned dtmf tone is also provided.
The technical scheme that the present invention adopts for its technical problem of solution is: a kind of transfer approach of dtmf tone, comprising:
After audio call is set up, BSS detects that the forward direction RTP that media gateway is come is grouped into DTMF frame;
DTMF frame is processed, obtains dtmf signaling frame in corresponding band;
Dtmf signaling frame in the band obtained is sent to MS by BSS.
A conveyer for dtmf tone, comprises BSS, and described BSS comprises detecting unit, processing unit and transmitting element; Wherein, described detecting unit detects that the forward direction RTP that media gateway is come is grouped into DTMF frame after being used for audio call foundation; Described processing unit is used for processing DTMF frame, obtains dtmf signaling frame in corresponding band; Dtmf signaling frame in described band is sent to MS by described transmitting element.
The invention has the beneficial effects as follows: under employing IP switching technology transmission means, dtmf signaling frame in DTMF digital processing one-tenth band during BSS divides into groups the forward direction RTP that media gateway is come, the form of dtmf signaling frame in band is adopted to send to MS, DTMF numeral A-D during the forward direction RTP that so just media gateway can be come divides into groups successfully sends MS to, can overcome in prior art and can not send DTMF numeral A-D to the defect of MS, thus more effectively realize the miscellaneous service relevant to DTMF.
Accompanying drawing explanation
Fig. 1 is the transmission basic flow sheet of one embodiment of the present invention dtmf tone;
Fig. 2 is the transmission detail flowchart of one embodiment of the present invention dtmf tone;
Fig. 3 is the conveyer schematic diagram of one embodiment of the present invention dtmf tone.
Embodiment
The transfer approach of present embodiment dtmf tone as shown in Figure 1, comprises the steps:
S1: detect DTMF frame.After audio call is set up, BSS detects that the forward direction RTP that media gateway is come is grouped into DTMF frame.
S2: obtain being with interior dtmf signaling frame.DTMF frame is processed, first parses corresponding DTMF numeral by DTMF frame, then can obtain dtmf signaling frame in corresponding band according to DTMF numeral from the buffering area being pre-stored in BSS.In other embodiments, also can be digital by DSP (Digital Signal Processing by the DTMF parsed, Digital Signal Processing) chip converts dtmf signaling frame in corresponding band to, or converts dtmf signaling frame in corresponding band to by special algorithm.
S3: dtmf signaling frame in transmit band.Dtmf signaling frame in the band obtained is sent to MS by BSS.
Fig. 2 shows the detailed process of the transfer approach of above-mentioned dtmf tone, specifically:
S21: dtmf signaling frame in the band that prestores.One buffering area is set in BSS, preserves dtmf signaling frame in 0-9, *, #, the A-D bands that totally 16 DTMF numeral is corresponding.
S22: after audio call is set up, BSS receives the forward direction RTP come from media gateway and divides into groups.
S23:BSS detects forward direction RTP grouping.Judge that forward direction RTP grouping is speech frame or DTMF frame, realize mainly through PT (Payload Type, the bearer types) value detecting forward direction RTP grouping.If forward direction RTP divides into groups, corresponding PT value is the PT value of speech business, then this forward direction RTP is grouped into speech frame; If forward direction RTP divides into groups, corresponding PT value is the PT value that DTMF is corresponding, then this forward direction RTP is grouped into DTMF frame.
S24: speech frame process.When BSS detects that forward direction RTP is grouped into speech frame, then this speech frame is passed through MS.
S25: parse the DTMF numeral that DTMF frame is corresponding.When BSS detects that forward direction RTP is grouped into DTMF frame, therefrom parse corresponding DTMF numeral.
S26: obtain dtmf signaling frame.BSS, according to the DTMF numeral parsed, takes out dtmf signaling frame in corresponding band from the buffering area being pre-stored in BSS.
S27: send.Dtmf signaling frame in band is sent to MS by BSS.
As shown in Figure 3, a kind of conveyer realizing the dtmf tone of the transfer approach of above-mentioned dtmf tone, comprises BSS10, and BSS10 comprises buffering area 104, detecting unit 101, processing unit 102 and transmitting element 103; Wherein, buffering area 104 comprises dtmf signaling frame in band corresponding to DTMF numeral for prestoring, in this buffering area 104, and dtmf signaling frame in 0-9, *, #, the A-D bands that totally 16 DTMF numerals are corresponding that can prestore; Detecting unit 101 detects that the forward direction RTP that media gateway is come is grouped into DTMF frame after setting up for audio call, realizes mainly through the PT value detecting forward direction RTP grouping.If forward direction RTP divides into groups, corresponding PT value is the PT value of speech business, then this forward direction RTP is grouped into speech frame; If forward direction RTP divides into groups, corresponding PT value is the PT value that DTMF is corresponding, then this forward direction RTP is grouped into DTMF frame; DTMF frame, for processing DTMF frame, is namely first parsed corresponding DTMF numeral by resolver by processing unit 102, then can obtain dtmf signaling frame in corresponding band according to DTMF numeral from being pre-stored in buffering area 104; Dtmf signaling frame in band is sent to MS by transmitting element 103.
Present embodiment is under employing IP switching technology transmission means, dtmf signaling frame in DTMF digital processing one-tenth band during BSS divides into groups the forward direction RTP that media gateway is come, the form of dtmf signaling frame in band is adopted to send to MS, DTMF numeral A-D during the forward direction RTP that so just media gateway can be come divides into groups successfully sends MS to, overcome in prior art and can not send DTMF numeral A-D to the defect of MS, thus more effectively realize the miscellaneous service relevant to DTMF.
In addition, the conveyer of above-mentioned execution mode dtmf tone can also make some changes, such as, cancel buffering area, increase in processing unit for the dsp chip by dtmf signaling frame in band corresponding for DTMF digital translation one-tenth, or DTMF digital translation is become the special algorithm device of dtmf signaling frame in the band of correspondence by increase.
Above content is in conjunction with concrete execution mode further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (8)
1. a transfer approach for dtmf tone, described transfer approach is applied in CDMA2000 system, it is characterized in that comprising:
After audio call is set up, BSS detects that the forward direction RTP that media gateway is come is grouped into DTMF frame;
DTMF frame is parsed corresponding DTMF numeral, obtain dtmf signaling frame in corresponding band according to DTMF numeral;
Dtmf signaling frame in the band obtained is sent to MS by BSS.
2. the transfer approach of dtmf tone according to claim 1, is characterized in that: in the described band obtaining correspondence according to DTMF numeral, dtmf signaling frame is: from the buffering area being pre-stored in BSS, obtain dtmf signaling frame in corresponding band according to DTMF numeral.
3. the transfer approach of dtmf tone according to claim 1, it is characterized in that: in the described band obtaining correspondence according to DTMF numeral, dtmf signaling frame is: by dsp chip by dtmf signaling frame in band corresponding for DTMF digital translation one-tenth, or convert dtmf signaling frame in corresponding band to by special algorithm.
4. the transfer approach of dtmf tone according to any one of claim 1 to 3, it is characterized in that: BSS detects that forward direction RTP that media gateway is come is grouped into DTMF frame and is: when detecting that the PT value that forward direction RTP divides into groups is the PT value of DTMF, then forward direction RTP is grouped into DTMF frame.
5. a conveyer for dtmf tone, described conveyer is applied in CDMA2000 system, comprises BSS, it is characterized in that: described BSS comprises detecting unit, processing unit and transmitting element; Wherein said detecting unit detects that the forward direction RTP that media gateway is come is grouped into DTMF frame after being used for audio call foundation; Described processing unit is used for processing DTMF frame, obtains dtmf signaling frame in corresponding band; Described processing unit comprises the resolver for DTMF frame being parsed corresponding DTMF numeral; Dtmf signaling frame in described band is sent to MS by described transmitting element.
6. the conveyer of dtmf tone according to claim 5, is characterized in that: described BSS also comprises the buffering area for dtmf signaling frame in the band that prestores, and sends to obtain dtmf signaling frame in the band in described buffering area according to DTMF numeral.
7. the conveyer of dtmf tone according to claim 5, it is characterized in that: described processing unit also comprises for the dsp chip by dtmf signaling frame in band corresponding for DTMF digital translation one-tenth, or for the special algorithm device by dtmf signaling frame in band corresponding for DTMF digital translation one-tenth.
8. the conveyer of the dtmf tone according to any one of claim 5 to 7, is characterized in that: described detecting unit is the PT value of DTMF by the PT value detecting forward direction RTP and divide into groups, and judges that forward direction RTP is grouped into DTMF frame.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910110038.3A CN102055516B (en) | 2009-11-09 | 2009-11-09 | DTMF (dual-tone multifrequency) sound transferring method and device |
| PCT/CN2010/078547 WO2011054321A1 (en) | 2009-11-09 | 2010-11-09 | Method and apparatus for transmitting dual tone multiple frequency tones |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910110038.3A CN102055516B (en) | 2009-11-09 | 2009-11-09 | DTMF (dual-tone multifrequency) sound transferring method and device |
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| CN102055516A CN102055516A (en) | 2011-05-11 |
| CN102055516B true CN102055516B (en) | 2014-12-17 |
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| US10523823B2 (en) * | 2015-06-18 | 2019-12-31 | Intel Corporation | Dual-tone multi-frequency digit detection in a wireless communication system |
| CN108809911B (en) * | 2017-05-04 | 2021-11-12 | 中兴通讯股份有限公司 | Method, device and storage medium for realizing secondary dialing in VoLTE network |
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| JP2004166049A (en) * | 2002-11-14 | 2004-06-10 | Denon Ltd | Communication system, terminal side communication apparatus, and center side communication apparatus |
| CN101026806A (en) * | 2006-02-24 | 2007-08-29 | 华为技术有限公司 | Method for transmitting DTMF information for CDMA system |
| CN101179535A (en) * | 2006-11-10 | 2008-05-14 | 华为技术有限公司 | Dual-tone multi-frequency signal processing method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1491019A (en) * | 2002-10-14 | 2004-04-21 | 华为技术有限公司 | Controller and method for mobile communication system apparatus by telephone terminal |
| JP4718791B2 (en) * | 2004-04-16 | 2011-07-06 | Ｎｅｃインフロンティア株式会社 | DTMF tone signal transmission method and DTMF tone signal transmission system |
| CN100544522C (en) * | 2005-12-01 | 2009-09-23 | 中兴通讯股份有限公司 | Qcelp 8k packets of voice is at the transmission method in CDMA2000 conventional terminal territory |
| CN101277473B (en) * | 2007-03-31 | 2012-08-08 | 华为技术有限公司 | Method, terminal and network equipment for altering state of packet switching field |
| CN101282284B (en) * | 2007-04-02 | 2011-08-10 | 中兴通讯股份有限公司 | Gateway-across dual-tone multi-frequency conveying method and apparatus |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004166049A (en) * | 2002-11-14 | 2004-06-10 | Denon Ltd | Communication system, terminal side communication apparatus, and center side communication apparatus |
| CN101026806A (en) * | 2006-02-24 | 2007-08-29 | 华为技术有限公司 | Method for transmitting DTMF information for CDMA system |
| CN101179535A (en) * | 2006-11-10 | 2008-05-14 | 华为技术有限公司 | Dual-tone multi-frequency signal processing method and system |
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| CN102055516A (en) | 2011-05-11 |
| WO2011054321A1 (en) | 2011-05-12 |
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Effective date of registration: 20200729 Address after: 210012 Nanjing, Yuhuatai District, South Street, Bauhinia Road, No. 68 Patentee after: Nanjing Zhongxing Software Co.,Ltd. Address before: 518057 Zhongxing building, science and technology south road, Nanshan District Science Park, Guangdong, Shenzhen Patentee before: ZTE Corp. |