CN102255793A - Double tone multi-frequency processing method and device - Google Patents

Double tone multi-frequency processing method and device Download PDF

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Publication number
CN102255793A
CN102255793A CN2011100679428A CN201110067942A CN102255793A CN 102255793 A CN102255793 A CN 102255793A CN 2011100679428 A CN2011100679428 A CN 2011100679428A CN 201110067942 A CN201110067942 A CN 201110067942A CN 102255793 A CN102255793 A CN 102255793A
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dtmf
current pending
event message
described current
event
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CN102255793B (en
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陈军成
陈健
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ZTE Corp
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/12—Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal
    • H04M7/1205—Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal where the types of switching equipement comprises PSTN/ISDN equipment and switching equipment of networks other than PSTN/ISDN, e.g. Internet Protocol networks
    • H04M7/1295—Details of dual tone multiple frequency signalling

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  • Computer Networks & Wireless Communication (AREA)
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  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a double tone multi-frequency processing method and a double tone multi-frequency processing device, which aim to improve double tone multi-frequency (DTMF) processing accuracy and increase a DTMF processing success ratio. The method comprises the following steps of: receiving an event message of DTMF currently to be processed, and determining the event type of the event message; setting the processing state of the DTMF currently to be processed according to the event type of the event message; and processing the DTMF currently to be processed according to the processing state of the DTMF currently to be processed. By the technical scheme provided by the invention, the DTMF processing accuracy is improved and the DTMF processing success ratio is increased.

Description

A kind of method and device thereof of handling dual-tone multifrequency
Technical field
The present invention relates to the communications field, relate in particular to method and the device thereof handled based on the DTMF (Double Tone Multi-frequency, dual-tone multifrequency) of RFC2833 message among the NGN (Next Generation Network, next-generation communication network).
Background technology
NGN is based on the network technology of grouping packet switch, when in NGN, sending voice medium, the voice medium that needs are sent is packaged into RTP (Real-time Transport Protocol, RTP) packet, and this RTP packet is carried in UDP (User Datagram Protocol, the User Data Protocol) message transmits.DTMF comprises load mode and the outer transmission mode of band in the band as voice signal; Be with outer transmission mode generally to transmit with the RTP message encapsulation of RFC2833 message format, alleviate the interior speech detection work load that brings that transmits of band of voice-over-net terminal system on the one hand, avoid on the other hand as G.723.1 waiting problem of low bit rate codec error detection DTMF, thereby improve the ability that voice terminal device is discerned DTMF automatically.But the mode of transmission RTP packet in the UDP message, can not guarantee the reliable transmission of packet, as at IP (Internet Protocol, Internet Protocol) in the phone, when grouping need be transmitted in IP network to DTMF transmission requirement reliability higher data, because IP network transmission error, network congestion etc. are former thereby may cause the DTMF message dropping, bring bigger transmission delay, thereby the DTMF that the user is heard is discontinuous or the processing that can not normally stop DTMF influencing speech business.
At present, voice terminal device must have beginning event message, intermediate event message (the intermediate event message also can be RFC 2833 messages) and the End Event message of this DTMF to the processing based on the DTMF of RFC 2833 message formats transmission; As: when receiving the beginning event message, just the DTMF that receives is handled; Continue to handle this DTMF when receiving the intermediate event message, the intermediate event message is handled once with the time interval examination of 50 milliseconds or normal speech; When receiving the End Event message, stop to handle DTMF.The mode of this processing DTMF of voice terminal device in the prior art, in network condition better when (as the situation of network congestion and Network Transmission mistake does not take place), processing DTMF that can be correct; But, when network condition is relatively poor, the relatively poor problem of accuracy that may cause when event message, intermediate event message or End Event message dropping voice terminal device that DTMF is handled owing to beginning, as: when beginning event message when losing, voice terminal device then can't normally begin the DTMF that receives is in time handled and reports; When middle event message was lost or postponed, voice terminal device then postponed or stops to handle this DTMF, thereby caused discontinuity that DTMF is handled, had breakpoint, brought discontinuous user's impression to the user; When the End Event message dropping, voice terminal device continues this DTMF is handled always, can't stop to handle to this DTMF, thereby or influence normal speech business.
Summary of the invention
At the above-mentioned technical problem that prior art exists, the embodiment of the invention provides a kind of method and device thereof of handling dual-tone multifrequency, to improve accuracy and the success rate of handling DTMF.
A kind of method of handling dual-tone multifrequency comprises:
Receive the event message of current pending DTMF, determine the event type of described event message;
The treatment state of described current pending DTMF is set according to the event type of described event message;
According to the treatment state of described current pending DTMF, handle described current pending DTMF.
A kind of device of handling dual-tone multifrequency comprises:
Determining unit is used to receive the event message of current pending DTMF, determines the event type of described event message;
The unit is set, is used for the event type of the described event message determined according to described determining unit, the treatment state of described current pending DTMF is set;
Processing unit is used for the treatment state that the described current pending DTMF that the unit is provided with is set according to described, handles described current pending DTMF.
In the embodiment of the invention,, when receiving the event message of current pending DTMF, the treatment state of described current pending DTMF is set according to the event type of this event message at current pending DTMF; And, handle described current pending DTMF according to the treatment state of described current pending DTMF; Adopt technical solution of the present invention, no matter the event message that current pending DTMF comprised is one or a plurality of (as the beginning event message, one or more in intermediate event message and the End Event message), can handle accordingly this current pending DTMF, there is not the problem that correctly to handle DTMF owing to lack one of them event message, thereby overcome and in DTMF, lacked the beginning event message in the prior art, in intermediate event message and the End Event message any one or a plurality of event message and can not correctly handle the problem of DTMF, thus the low and lower problem of success rate of accuracy that DTMF is handled caused; Therefore adopt technical solution of the present invention, improved correctness and success rate that DTMF is handled.
Description of drawings
Fig. 1 is a method flow diagram of handling DTMF in the embodiment of the invention;
Fig. 2 is for receiving the method flow diagram that the treatment state of DTMF is set in the formation at buffering area in the embodiment of the invention;
Fig. 3 is a method flow diagram of handling DTMF in the embodiment of the invention in the buffering area processing queue;
Fig. 4 is a structural representation of handling the device of DTMF in the embodiment of the invention.
Embodiment
At the above-mentioned technical problem that prior art exists, the embodiment of the invention provides a kind of method and device thereof of handling dual-tone multifrequency, to improve accuracy and the success rate that DTMF is handled; The method of this processing dual-tone multifrequency comprises: receive the event message of current pending DTMF, determine the event type of described event message; The treatment state of described current pending DTMF is set according to the event type of described event message; According to the treatment state of described current pending DTMF, handle described current pending DTMF.Adopt technical solution of the present invention, no matter the event message that current pending DTMF comprised is one or a plurality of (as the beginning event message, one or more in intermediate event message and the End Event message), can handle accordingly this current pending DTMF, there is not the problem that correctly to handle DTMF owing to lack one of them event message, thereby overcome and in DTMF, lacked the beginning event message in the prior art, in intermediate event message and the End Event message any one or a plurality of event message and can not correctly handle the problem of DTMF, thus the low and lower problem of success rate of accuracy that DTMF is handled caused; Therefore adopt technical solution of the present invention, improved correctness and success rate that DTMF is handled.
Below in conjunction with Figure of description technical solution of the present invention is described in detail.
Referring to Fig. 1, for handling the method flow diagram of dual-tone multifrequency in the embodiment of the invention, this method comprises:
Step 101, receive the event message of current pending DTMF, determine the event type of described event message.
Step 102, the treatment state of described current pending DTMF is set according to the event type of described event message.
Step 103, according to the treatment state of described current pending DTMF, handle described current pending DTMF.
Preferably, above-mentioned process step 102 specifically can comprise: when the event type of described event message was the beginning event message, the treatment state of described current pending DTMF was set to armed state (being pending); When the event type of described event message was the End Event message, the treatment state of described current pending DTMF was set to end process state (being end); When the event type of described event message is the intermediate event message, judges whether to write down described event message, and the treatment state of described current pending DTMF is set according to judged result.According to judged result the treatment state of described current pending DTMF is set, can specifically comprises: when writing down described event message, keep described current pending DTMF just treatment state (being working); When not writing down described event message, whether the concluding time stamp of judging described current pending DTMF is greater than current processing time stamp; If then the treatment state of described current pending DTMF is set to armed state; Then the treatment state of described current pending DTMF is set to done state if not.
Preferably, the step 102 of above-mentioned flow process also can comprise step: when the event type of described event message is the beginning event message, store the event information of described event message, described event information comprises incident value, performance number, timestamp, beginning event flag, End Event sign and incident width; When the event type of described event message was the End Event message, the concluding time that described current pending DTMF is set stabbed, and stored the event information of described event message; When the event type of described event message is the intermediate event message, and the concluding time of described current pending DTMF stab when stabbing greater than the current processing time, then store the event information of described event message.
In the above-mentioned process step 103, specifically can comprise: when the treatment state of described current pending DTMF such as is at armed state, the processing function of the described current pending DTMF of initialization, and the treatment state of described current pending DTMF is set to just at treatment state; When the treatment state of described current pending DTMF for just at treatment state the time, judge whether described current pending DTMF has the concluding time to stab, and handle described current pending DTMF according to judged result.
Handle described current pending DTMF according to judged result, can comprise: when in judgement does not have the time threshold that the concluding time stabs and setting (time threshold can rule of thumb be worth be set to 50 milliseconds), receiving the intermediate event message of described current pending DTMF, continue to handle described current pending DTMF; When not receiving the intermediate event message of described current pending DTMF in judgement does not have time threshold that the concluding time stabs and setting, whether the incident width of judging described current pending DTMF surpasses the incident width threshold value that is provided with (incident width threshold value can rule of thumb be worth be set to 8 seconds); If then stop to handle described current pending DTMF, then continue to handle described current pending DTMF if not; When judgement has the concluding time to stab, judge that whether current processing time stamp arrives the concluding time stamp of described current pending DTMF, then stops to handle described current pending DTMF if arrive, if no show then continues to handle described current pending DTMF.
In actual applications, can adopt buffering area to receive formation and realize step 101～step 102 in the above-mentioned flow process, adopt the buffering area processing queue to realize step 103 in the above-mentioned flow process.Buffering area receives formation when the event message that receives based on the RFC2833 message format, if when judging this event message for the beginning event message, store the event information of this event message, and the treatment state of corresponding D TMF is set to pending; If judge when this event message is the intermediate event message, carry out following processing: according to the RTP timestamp of this intermediate event message, if buffering area receives formation when having write down described event message, event information according to this intermediate event message upgrades the events corresponding information of having stored, and the treatment state of corresponding D TMF is set to working; If buffering area receives formation when not writing down described event message, the concluding time of judging described current pending DTMF is when stabbing and to stab greater than the current processing time, the treatment state of described current pending DTMF is set to pending, otherwise the treatment state of described current pending DTMF is set to end.The buffering area processing queue checks that regularly or periodically buffering area receives formation, when the treatment state of the current DTMF that need handle in the buffering area reception formation is pending, the processing function of this DTMF of buffering area processing queue initialization, and the treatment state of this DTMF is set to working; When the treatment state of the current DTMF that need handle in the buffering area reception formation is working, determine whether this DTMF has the concluding time to stab, if when not having the concluding time stamp and in the time threshold of setting, not receiving the intermediate event message of this DTMF, whether judgement reaches the incident width threshold value (the incident width threshold value as setting is empirical value 8 seconds) of setting according to the incident width of this DTMF, then stop processing if reach the incident width threshold value to this DTMF, and the treatment state of this DTMF is set to end, then do not continue to handle DTMF if reach the time width threshold value.
Referring to Fig. 2, for receiving the method flow diagram that the treatment state of DTMF is set in the formation at buffering area in the embodiment of the invention, the method comprising the steps of:
Step 201, buffering area receive formation and receive event message, and store the event message that this receives.
Step 202, according to the event flag position of described event message, judge the event type of this event message.
Step 203, when the event type of described event message during for the beginning event message, the event information of described event message is written in the buffering area, and the treatment state of corresponding D TMF is set to pending.
Step 204, when the event type of described event message is the intermediate event message, judge buffering area receives in the formation whether write down this event message, if execution in step 206 then, otherwise execution in step 207.
Step 205, when the event type of described event message is the End Event message, the event information of described event message is written in the buffering area, and the treatment state of corresponding D TMF is set to end, and the concluding time of this DTMF of mark stabs.
Step 206, upgrade timestamp and the incident width of described DTMF according to the event information of described event message.
Step 207, judge that whether the current timestamp of described DTMF stabs greater than the current processing time, if execution in step 208 then, otherwise execution in step 209.
Step 208, the event information of described event message is written in the buffering area, and the treatment state of corresponding D TMF is set to pending.
Step 209, abandon described DTMF.
Step 210, process ends.
Referring to Fig. 3, for handle the method flow diagram of DTMF in the embodiment of the invention in the buffering area processing queue, this method comprises:
Step 301, the described buffering area of the checking regular or cycle receive formation, and determine the current DTMF that needs processing in the buffering area reception formation.
Step 302, the current treatment state of the described DTMF of judgement.
Step 303, when the treatment state of described DTMF is pending, the processing function of this DTMF of initialization, and the treatment state of this DTMF is set to working.
Step 304, when the treatment state of described DTMF is working, handle this DTMF, and judge whether described DTMF has the concluding time to stab, execution in step 305 then if not, otherwise execution in step 307.
Step 305, judge the intermediate event message that in the time threshold of setting, whether receives described DTMF, if execution in step 301 then, otherwise execution in step 306.
Step 306, judge whether the incident width of described DTMF arrives the incident width threshold value of setting, if execution in step 308 then, otherwise execution in step 301.
Current processing time of step 307, judgment processing DTMF stabs the concluding time that whether arrives described DTMF and stabs, if execution in step 308 then, otherwise execution in step 301.
Step 308, stop to handle described DTMF, and the treatment state of this DTMF is set to end.
Step 309, process ends.
Based on the same idea of said method, the embodiment of the invention also provides a kind of device of handling dual-tone multifrequency, and the structure of this device as shown in Figure 4.
Referring to Fig. 4,, comprising for handling the structural representation of the device of dual-tone multifrequency in the embodiment of the invention:
Determining unit 41 is used to receive the event message of current pending DTMF, determines the event type of described event message;
Unit 42 is set, is used for the event type of the described event message determined according to described determining unit 41, the treatment state of described current pending DTMF is set;
Processing unit 43 is used for the treatment state that the described current pending DTMF that unit 42 is provided with is set according to described, handles described current pending DTMF.
Unit 42 is set, specifically is used for: when the event type of described event message was the beginning event message, the treatment state of described current pending DTMF was set to armed state;
When the event type of described event message was the End Event message, the treatment state of described current pending DTMF was set to the end process state;
When the event type of described event message is the intermediate event message, judges whether to write down described event message, and the treatment state of described current pending DTMF is set according to judged result.
Unit 42 is set the treatment state of described current pending DTMF is set, specifically be used for according to judged result:
When writing down described event message,, upgrade the events corresponding information that has write down according to the event information of described event message;
When not writing down described event message, whether the concluding time stamp of judging described current pending DTMF is greater than current processing time stamp; If then the treatment state of described current pending DTMF is set to armed state; Then the treatment state of described current pending DTMF is set to done state if not.
Unit 42 is set is further used for,
When the event type of described event message is the beginning event message, store the event information of described event message, described event information comprises incident value, performance number, timestamp, beginning event flag, End Event sign and incident width; And, being used for when the event type of described event message is the End Event message, the concluding time that described current pending DTMF is set stabs, and stores the event information of described event message; And the event type that is used at described event message is the intermediate event message, and the concluding time of described current pending DTMF stab when stabbing greater than the current processing time, then store the event information of described event message.
Preferably, described processing unit 43, specifically be used for: when the treatment state of described current pending DTMF such as is at armed state, the processing function of the described current pending DTMF of initialization, and the treatment state of described current pending DTMF is set to just at treatment state;
When the treatment state of described current pending DTMF for just at treatment state the time, judge whether described current pending DTMF has the concluding time to stab, and handle described current pending DTMF according to judged result.
Processing unit 43 is handled described current pending DTMF according to judged result, specifically is used for:
When judgement does not have the concluding time to stab and receive the intermediate event message of described current pending DTMF in the time threshold of setting, continue to handle described current pending DTMF;
When judgement does not have the concluding time to stab and do not receive the intermediate event message of described current pending DTMF in the time threshold of setting, judge whether the incident width of described current pending DTMF surpasses the incident width threshold value that is provided with; If then stop to handle described current pending DTMF, then continue to handle described current pending DTMF if not;
When judgement has the concluding time to stab, judge that whether current processing time stamp arrives the concluding time stamp of described current pending DTMF, then stops to handle described current pending DTMF if arrive, if no show then continues to handle described current pending DTMF.
In the embodiment of the invention,, when receiving the event message of current pending DTMF, the treatment state of described current pending DTMF is set according to the event type of this event message at current pending DTMF; And, handle described current pending DTMF according to the treatment state of described current pending DTMF; Adopt technical solution of the present invention, no matter the event message that current pending DTMF comprised is one or a plurality of (as the beginning event message, one or more in intermediate event message and the End Event message), can handle accordingly this current pending DTMF, there is not the problem that correctly to handle DTMF owing to lack one of them event message, thereby overcome and in DTMF, lacked the beginning event message in the prior art, in intermediate event message and the End Event message any one or a plurality of event message and can not correctly handle the problem of DTMF, thus the low and lower problem of success rate of accuracy that DTMF is handled caused; Therefore adopt technical solution of the present invention, improved correctness and success rate that DTMF is handled.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims (12)

1. a method of handling dual-tone multifrequency is characterized in that, comprising:
Receive the event message of current pending DTMF, determine the event type of described event message;
The treatment state of described current pending DTMF is set according to the event type of described event message;
According to the treatment state of described current pending DTMF, handle described current pending DTMF.
2. the method for claim 1 is characterized in that, according to the event type of described event message the treatment state of described current pending DTMF is set, and comprising:
When the event type of described event message was the beginning event message, the treatment state of described current pending DTMF was set to armed state;
When the event type of described event message was the End Event message, the treatment state of described current pending DTMF was set to the end process state;
When the event type of described event message is the intermediate event message, judges whether to write down described event message, and the treatment state of described current pending DTMF is set according to judged result.
3. method as claimed in claim 2 is characterized in that, describedly according to judged result the treatment state of described current pending DTMF is set, and comprising:
When writing down described event message, keep described current pending DTMF just at treatment state;
When not writing down described event message, whether the concluding time stamp of judging described current pending DTMF is greater than current processing time stamp; If then the treatment state of described current pending DTMF is set to armed state; Then the treatment state of described current pending DTMF is set to done state if not.
4. method as claimed in claim 3 is characterized in that, also comprises:
When the event type of described event message is the beginning event message, store the event information of described event message, described event information comprises incident value, performance number, timestamp, beginning event flag, End Event sign and incident width;
When the event type of described event message was the End Event message, the concluding time that described current pending DTMF is set stabbed, and stored the event information of described event message;
When the event type of described event message is the intermediate event message, and the concluding time of described current pending DTMF stab when stabbing greater than the current processing time, then store the event information of described event message.
5. method as claimed in claim 2 is characterized in that, handles described current pending DTMF, comprising:
When the treatment state of described current pending DTMF such as is at armed state, the processing function of the described current pending DTMF of initialization, and the treatment state of described current pending DTMF is set to just at treatment state;
When the treatment state of described current pending DTMF for just at treatment state the time, judge whether described current pending DTMF has the concluding time to stab, and handle described current pending DTMF according to judged result.
6. method as claimed in claim 5 is characterized in that, describedly handles described current pending DTMF according to judged result, comprising:
When judgement does not have the concluding time to stab and receive the intermediate event message of described current pending DTMF in the time threshold of setting, continue to handle described current pending DTMF;
When judgement does not have the concluding time to stab and do not receive the intermediate event message of described current pending DTMF in the time threshold of setting, judge whether the incident width of described current pending DTMF surpasses the incident width threshold value that is provided with; If then stop to handle described current pending DTMF, then continue to handle described current pending DTMF if not;
When judgement has the concluding time to stab, judge that whether current processing time stamp arrives the concluding time stamp of described current pending DTMF, then stops to handle described current pending DTMF if arrive, if no show then continues to handle described current pending DTMF.
7. a device of handling dual-tone multifrequency is characterized in that, comprising:
Determining unit is used to receive the event message of current pending DTMF, determines the event type of described event message;
The unit is set, is used for the event type of the described event message determined according to described determining unit, the treatment state of described current pending DTMF is set;
Processing unit is used for the treatment state that the described current pending DTMF that the unit is provided with is set according to described, handles described current pending DTMF.
8. device as claimed in claim 7 is characterized in that, the described unit that is provided with specifically is used for: when the event type of described event message was the beginning event message, the treatment state of described current pending DTMF was set to armed state;
When the event type of described event message was the End Event message, the treatment state of described current pending DTMF was set to the end process state;
When the event type of described event message is the intermediate event message, judges whether to write down described event message, and the treatment state of described current pending DTMF is set according to judged result.
9. device as claimed in claim 8 is characterized in that, the described unit that is provided with is provided with the treatment state of described current pending DTMF according to judged result, specifically is used for:
When writing down described event message,, upgrade the events corresponding information that has write down according to the event information of described event message;
When not writing down described event message, whether the concluding time stamp of judging described current pending DTMF is greater than current processing time stamp; If then the treatment state of described current pending DTMF is set to armed state; Then the treatment state of described current pending DTMF is set to done state if not.
10. device as claimed in claim 9, it is characterized in that, the described unit that is provided with is further used for, when the event type of described event message is the beginning event message, store the event information of described event message, described event information comprises incident value, performance number, timestamp, beginning event flag, End Event sign and incident width; And, being used for when the event type of described event message is the End Event message, the concluding time that described current pending DTMF is set stabs, and stores the event information of described event message; And the event type that is used at described event message is the intermediate event message, and the concluding time of described current pending DTMF stab when stabbing greater than the current processing time, then store the event information of described event message.
11. device as claimed in claim 8 is characterized in that, described processing unit specifically is used for:
When the treatment state of described current pending DTMF such as is at armed state, the processing function of the described current pending DTMF of initialization, and the treatment state of described current pending DTMF is set to just at treatment state;
When the treatment state of described current pending DTMF for just at treatment state the time, judge whether described current pending DTMF has the concluding time to stab, and handle described current pending DTMF according to judged result.
12. device as claimed in claim 11 is characterized in that, described processing unit is handled described current pending DTMF according to judged result, specifically is used for:
When judgement does not have the concluding time to stab and receive the intermediate event message of described current pending DTMF in the time threshold of setting, continue to handle described current pending DTMF;
When judgement does not have the concluding time to stab and do not receive the intermediate event message of described current pending DTMF in the time threshold of setting, judge whether the incident width of described current pending DTMF surpasses the incident width threshold value that is provided with; If then stop to handle described current pending DTMF, then continue to handle described current pending DTMF if not;
When judgement has the concluding time to stab, judge that whether current processing time stamp arrives the concluding time stamp of described current pending DTMF, then stops to handle described current pending DTMF if arrive, if no show then continues to handle described current pending DTMF.
CN201110067942.8A 2011-03-21 2011-03-21 Double tone multi-frequency processing method and device Expired - Fee Related CN102255793B (en)

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Cited By (1)

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WO2012126310A1 (en) * 2011-03-21 2012-09-27 中兴通讯股份有限公司 Method and device for processing double tone multi-frequency

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