CN102255793B - 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
CN102255793B
CN102255793B CN201110067942.8A CN201110067942A CN102255793B CN 102255793 B CN102255793 B CN 102255793B CN 201110067942 A CN201110067942 A CN 201110067942A CN 102255793 B CN102255793 B CN 102255793B
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dtmf
current pending
event
event message
described current
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CN102255793A (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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Priority to PCT/CN2012/071625 priority patent/WO2012126310A1/en
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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

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 processing dual-tone multifrequency
Technical field
The present invention relates to the communications field, relate in particular to the Network to NGN(Next Generation, next-generation communication network) in DTMF(Double Tone Multi-frequency based on RFC2833 message, dual-tone multifrequency) method and the device thereof processed.
Background technology
NGN is the network technology based on grouping packet switch, send voice medium in NGN time, the voice medium that needs are sent is packaged into RTP(Real-time Transport Protocol, RTP) packet, and this RTP packet is carried on to UDP(User Datagram Protocol, User Data Protocol) transmit in message.DTMF, as voice signal, comprises load mode and the outer load mode of band in band; Be with outer load mode generally to transmit with the RTP message encapsulation of RFC2833 message format, alleviate on the one hand the interior speech detection work load bringing that transmits of band of voice-over-net terminal system, avoid on the other hand as the problem of low bit rate codec error detection DTMF such as G.723.1, thereby improve voice terminal device and automatically identify the ability of DTMF.But in UDP message, transmit the mode of RTP packet, can not ensure the transmitting of packet, as at IP(Internet Protocol, Internet Protocol) in phone, when to DTMF transmission requirement reliability, higher packet need to be transmitted in IP network, because IP network transmission error, network congestion etc. are former thereby may cause DTMF message dropping, bring larger transmission delay, thereby the DTMF that can make user hear is discontinuous or the processing that can not normally stop DTMF affecting speech business.
At present, voice terminal device must have beginning event message, intermediate event message (intermediate event message can be also RFC2833 message) and the End Event message of this DTMF to the processing of the DTMF based on the transmission of RFC2833 message format; As: in the time receiving beginning event message, just the DTMF receiving is processed; In the time receiving intermediate event message, continue to process this DTMF, intermediate event message is processed once with the time interval examination of 50 milliseconds or normal speech; In the time receiving End Event message, stop processing DTMF.The mode of this processing DTMF of voice terminal device in prior art, when network condition better (situation of network congestion and Internet Transmission mistake if there is not), processing DTMF that can be correct; But, in the time that network condition is poor, may be due to the poor problem of accuracy that starts to cause voice terminal device to be processed DTMF when event message, intermediate event message or End Event message dropping, as: in the time starting event message loss, the DTMF that voice terminal device cannot normally start receiving processes in time and reports; In the time that middle event message is lost or postpone, voice terminal device postpones or stops processing this DTMF, thereby causes the discontinuity that DTMF is processed, and has breakpoint, brings discontinuous user's impression to user; In the time of End Event message dropping, voice terminal device continues this DTMF to process always, cannot stop processing to this DTMF, thereby or affect normal speech business.
Summary of the invention
The above-mentioned technical problem existing for prior art, the embodiment of the present invention provides a kind of method and device thereof of processing dual-tone multifrequency, to improve accuracy and the success rate of processing DTMF.
A method of processing dual-tone multifrequency, 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, process described current pending DTMF;
Wherein,
The treatment state that described current pending DTMF is set according to the event type of described event message, is specially:
When the event type of described event message is that while starting event message, the treatment state of described current pending DTMF is set to armed state;
In the time that the event type of described event message is End Event message, the treatment state of described current pending DTMF is set to end process state;
In the time that the event type of described event message is intermediate event message, judges whether to record described event message, and the treatment state of described current pending DTMF is set according to judged result.
A device of processing dual-tone multifrequency, comprising:
Determining unit, for receiving the event message of current pending DTMF, determines the event type of described event message;
Setting unit, for the event type of the described event message determined according to described determining unit, arranges the treatment state of described current pending DTMF;
Processing unit, for according to the treatment state of the described current pending DTMF of described setting unit setting, processes described current pending DTMF;
Wherein, described setting unit, specifically for:
When the event type of described event message is that while starting event message, the treatment state of described current pending DTMF is set to armed state;
In the time that the event type of described event message is End Event message, the treatment state of described current pending DTMF is set to end process state;
In the time that the event type of described event message is intermediate event message, judges whether to record described event message, and the treatment state of described current pending DTMF is set according to judged result.
In the embodiment of the present invention, for current pending DTMF, in the time 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, and according to the treatment state of described current pending DTMF, process described current pending DTMF, adopt technical solution of the present invention, no matter the event message that current pending DTMF comprises is one or multiple (as started event message, one or more in intermediate event message and End Event message), can process accordingly this current pending DTMF, do not exist owing to lacking one of them event message and cannot carry out the correct problem of processing to DTMF, thereby overcome and in prior art, in DTMF, lacked beginning event message, any one or more event messages in intermediate event message and End Event message and can not correctly process the problem of DTMF, thereby cause the lower and lower problem of success rate of accuracy that DTMF is processed, therefore adopt technical solution of the present invention, improved correctness and success rate that DTMF is processed.
Brief description of the drawings
Fig. 1 is the method flow diagram of processing DTMF in the embodiment of the present invention;
Fig. 2 is the method flow diagram that the treatment state of DTMF is set in the embodiment of the present invention in the receiving queue of buffering area;
Fig. 3 is the method flow diagram of processing DTMF in the embodiment of the present invention in the processing queue of buffering area;
Fig. 4 is the structural representation of processing the device of DTMF in the embodiment of the present invention.
Embodiment
The above-mentioned technical problem existing for prior art, the embodiment of the present invention provides a kind of method and device thereof of processing dual-tone multifrequency, to improve accuracy and success rate that DTMF is processed; 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, process described current pending DTMF.Adopt technical solution of the present invention, no matter the event message that current pending DTMF comprises is one or multiple (as started event message, one or more in intermediate event message and End Event message), can process accordingly this current pending DTMF, do not exist owing to lacking one of them event message and cannot carry out the correct problem of processing to DTMF, thereby overcome and in prior art, in DTMF, lacked beginning event message, any one or more event messages in intermediate event message and End Event message and can not correctly process the problem of DTMF, thereby cause the lower and lower problem of success rate of accuracy that DTMF is processed, therefore adopt technical solution of the present invention, improved correctness and success rate that DTMF is processed.
Below in conjunction with Figure of description, technical solution of the present invention is described in detail.
Referring to Fig. 1, for processing the method flow diagram of dual-tone multifrequency in the embodiment of the present invention, the 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, process described current pending DTMF.
Preferably, above-mentioned process step 102 specifically can comprise: when the event type of described event message is that while starting event message, the treatment state of described current pending DTMF is set to armed state (being pending); In the time that the event type of described event message is End Event message, the treatment state of described current pending DTMF is set to end process state (being end); In the time that the event type of described event message is intermediate event message, judges whether to record described event message, and the treatment state of described current pending DTMF is set according to judged result.The treatment state of described current pending DTMF is set according to judged result, can specifically comprises: in the time recording described event message, retain described current pending DTMF just treatment state (being working); In the time not recording described event message, judge whether the end time stamp of described current pending DTMF is greater than current processing time stamp; If the treatment state of described current pending DTMF is set to armed state; 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 while starting event message, store the event information of described event message, described event information comprises event value, performance number, timestamp, beginning event flag, End Event mark and event width; In the time that the event type of described event message is End Event message, the end time stamp of described current pending DTMF is set, and stores the event information of described event message; When the event type of described event message is intermediate event message, and the end time of described current pending DTMF stamp is greater than current processing time when stamp, stores the event information of described event message.
In above-mentioned process step 103, specifically can comprise: in the time of the armed statees such as the treatment state of described current pending DTMF is, the processing function of current pending DTMF described in 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 is when just at treatment state, judge whether described current pending DTMF has end time stamp, and process described current pending DTMF according to judged result.
Process described current pending DTMF according to judged result, can comprise: in the time that judgement does not have end time stamp and receive the intermediate event message of described current pending DTMF in the time threshold (time threshold can be set to 50 milliseconds based on experience value) of setting, continue to process described current pending DTMF; In the time that judgement does not have end time stamp and do not receive the intermediate event message of described current pending DTMF in the time threshold of setting, judge whether the event width of described current pending DTMF exceedes the event width threshold value of setting (event width threshold value can be set to 8 seconds based on experience value); If stop processing described current pending DTMF, continue to process if not described current pending DTMF; In the time that judgement has the end time to stab, judge whether current processing time stamp arrives the end time stamp of described current pending DTMF, stops processing described current pending DTMF if arrive, and processes described current pending DTMF if do not arrive continuation.
In actual applications, can adopt buffering area receiving queue to realize the step 101～step 102 in above-mentioned flow process, adopt buffering area processing queue to realize the step 103 in above-mentioned flow process.Buffering area receiving queue, in the time of the event message receiving based on RFC2833 message format, if while judging this event message for beginning event message, store the event information of this event message, and the treatment state of corresponding DTMF is set to pending; If judge when this event message is intermediate event message, carry out following processing: according to the RTP timestamp of this intermediate event message, if when buffering area receiving queue has recorded described event message, upgrade the corresponding event information of having stored according to the event information of this intermediate event message, and the treatment state of corresponding DTMF is set to working; If when buffering area receiving queue does not record described event message, the end time stamp that judges described current pending DTMF is greater than current processing time when stamp, 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.Buffering area processing queue regularly or is periodically checked buffering area receiving queue, in the time that the treatment state of current need DTMF to be processed in the receiving queue of buffering area 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; In the time that the treatment state of current need DTMF to be processed in the receiving queue of buffering area is working, determine whether this DTMF has end time stamp, if when thering is no end time stamp and do not receive the intermediate event message of this DTMF in the time threshold of setting, judge the event width threshold value (if the event width threshold value arranging is empirical value 8 seconds) that whether reaches setting according to the event width of this DTMF, if the event width threshold value of reaching stops the processing to this DTMF, and the treatment state of this DTMF is set to end, continue to process DTMF if do not reach time width threshold value.
Referring to Fig. 2, for the method flow diagram of the treatment state of DTMF is set in the embodiment of the present invention in the receiving queue of buffering area, the method comprising the steps of:
Step 201, buffering area receiving queue 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 is when starting event message, the event information of described event message is written in buffering area, and the treatment state of corresponding DTMF is set to pending.
Step 204, in the time that the event type of described event message is intermediate event message, judge in the receiving queue of buffering area whether recorded this event message, if perform step 206, otherwise execution step 207.
Step 205, in the time that the event type of described event message is End Event message, the event information of described event message is written in buffering area, and the treatment state of corresponding DTMF is set to end, and the end time of this DTMF of mark stamp.
Step 206, upgrade timestamp and the event width of described DTMF according to the event information of described event message.
Step 207, judge whether the current timestamp of described DTMF is greater than current processing time stamp, if perform step 208, otherwise execution step 209.
Step 208, the event information of described event message is written in buffering area, and the treatment state of corresponding DTMF is set to pending.
Step 209, abandon described DTMF.
Step 210, process ends.
Referring to Fig. 3, for process the method flow diagram of DTMF in the embodiment of the present invention in the processing queue of buffering area, the method comprises:
Step 301, regularly or the cycle check described buffering area receiving queue, and determine current need DTMF to be processed in the receiving queue of buffering area.
Step 302, judge the treatment state that described DTMF is current.
Step 303, in the time that 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, in the time that the treatment state of described DTMF is working, process this DTMF, and judge whether described DTMF has end time stamp, performs step 305 if not, otherwise execution step 307.
Step 305, judge set time threshold in whether receive the intermediate event message of described DTMF, if perform step 301, otherwise execution step 306.
Step 306, judge whether the event width of described DTMF arrives the event width threshold value of setting, if perform step 308, otherwise execution step 301.
Step 307, judge whether current processing time stamp of processing DTMF arrives the end time stamp of described DTMF, if perform step 308, otherwise execution step 301.
Step 308, stop processing 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 present invention also provides a kind of device of processing dual-tone multifrequency, and the structure of this device as shown in Figure 4.
Referring to Fig. 4, for processing the structural representation of device of dual-tone multifrequency in the embodiment of the present invention, comprising:
Determining unit 41, for receiving the event message of current pending DTMF, determines the event type of described event message;
Setting unit 42, for the event type of the described event message determined according to described determining unit 41, arranges the treatment state of described current pending DTMF;
Processing unit 43, for the treatment state of the described current pending DTMF that arranges according to described setting unit 42, processes described current pending DTMF.
Setting unit 42, specifically for: when the event type of described event message is that while starting event message, the treatment state of described current pending DTMF is set to armed state;
In the time that the event type of described event message is End Event message, the treatment state of described current pending DTMF is set to end process state;
In the time that the event type of described event message is intermediate event message, judges whether to record described event message, and the treatment state of described current pending DTMF is set according to judged result.
Setting unit 42 arranges the treatment state of described current pending DTMF according to judged result, specifically for:
In the time recording described event message, according to the event information of described event message, upgrade the corresponding event information having recorded;
In the time not recording described event message, judge whether the end time stamp of described current pending DTMF is greater than current processing time stamp; If the treatment state of described current pending DTMF is set to armed state; The treatment state of described current pending DTMF is set to done state if not.
Setting unit 42 is further used for,
Be while starting event message at the event type of described event message, store the event information of described event message, described event information comprises event value, performance number, timestamp, beginning event flag, End Event mark and event width; And, in the time that the event type of described event message is End Event message, the end time stamp of described current pending DTMF is set, and stores the event information of described event message; And, be intermediate event message for the event type at described event message, and the end time of described current pending DTMF stamp is greater than current processing time when stamp, store the event information of described event message.
Preferably, described processing unit 43, specifically for: when the armed statees such as the treatment state of described current pending DTMF is, the processing function of current pending DTMF described in 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 is when just at treatment state, judge whether described current pending DTMF has end time stamp, and process described current pending DTM F according to judged result.
Processing unit 43 is processed described current pending DTMF according to judged result, specifically for:
In the time that judgement does not have end time stamp and receive the intermediate event message of described current pending DTMF in the time threshold of setting, continue to process described current pending DTMF;
In the time that judgement does not have end time stamp and do not receive the intermediate event message of described current pending DTMF in the time threshold of setting, judge whether the event width of described current pending DTMF exceedes the event width threshold value of setting; If stop processing described current pending DTMF, continue to process if not described current pending DTMF;
In the time that judgement has the end time to stab, judge whether current processing time stamp arrives the end time stamp of described current pending DTMF, stops processing described current pending DTMF if arrive, and processes described current pending DTMF if do not arrive continuation.
In the embodiment of the present invention, for current pending DTMF, in the time 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, and according to the treatment state of described current pending DTMF, process described current pending DTMF, adopt technical solution of the present invention, no matter the event message that current pending DTMF comprises is one or multiple (as started event message, one or more in intermediate event message and End Event message), can process accordingly this current pending DTMF, do not exist owing to lacking one of them event message and cannot carry out the correct problem of processing to DTMF, thereby overcome and in prior art, in DTMF, lacked beginning event message, any one or more event messages in intermediate event message and End Event message and can not correctly process the problem of DTMF, thereby cause the lower and lower problem of success rate of accuracy that DTMF is processed, therefore adopt technical solution of the present invention, improved correctness and success rate that DTMF is processed.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if these amendments of the present invention and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.

Claims (10)

1. a method of processing 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, process described current pending DTMF;
Wherein,
The treatment state that described current pending DTMF is set according to the event type of described event message, is specially:
When the event type of described event message is that while starting event message, the treatment state of described current pending DTMF is set to armed state;
In the time that the event type of described event message is End Event message, the treatment state of described current pending DTMF is set to end process state;
In the time that the event type of described event message is intermediate event message, judges whether to record described event message, and the treatment state of described current pending DTMF is set according to judged result.
2. the method for claim 1, is characterized in that, the described treatment state that described current pending DTMF is set according to judged result, comprising:
In the time recording described event message, retain described current pending DTMF just at treatment state;
In the time not recording described event message, judge whether the end time stamp of described current pending DTMF is greater than current processing time stamp; If the treatment state of described current pending DTMF is set to armed state; The treatment state of described current pending DTMF is set to done state if not.
3. method as claimed in claim 2, is characterized in that, also comprises:
When the event type of described event message is while starting event message, store the event information of described event message, described event information comprises event value, performance number, timestamp, beginning event flag, End Event mark and event width;
In the time that the event type of described event message is End Event message, the end time stamp of described current pending DTMF is set, and stores the event information of described event message;
When the event type of described event message is intermediate event message, and the end time of described current pending DTMF stamp is greater than current processing time when stamp, stores the event information of described event message.
4. the method for claim 1, is characterized in that, processes described current pending DTMF, comprising:
In the time of the armed statees such as the treatment state of described current pending DTMF is, the processing function of current pending DTMF described in 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 is when just at treatment state, judge whether described current pending DTMF has end time stamp, and process described current pending DTMF according to judged result.
5. method as claimed in claim 4, is characterized in that, described according to the described current pending DTMF of judged result processing, comprising:
In the time that judgement does not have end time stamp and receive the intermediate event message of described current pending DTMF in the time threshold of setting, continue to process described current pending DTMF;
In the time that judgement does not have end time stamp and do not receive the intermediate event message of described current pending DTMF in the time threshold of setting, judge whether the event width of described current pending DTMF exceedes the event width threshold value of setting; If stop processing described current pending DTMF, continue to process if not described current pending DTMF;
In the time that judgement has the end time to stab, judge whether current processing time stamp arrives the end time stamp of described current pending DTMF, stops processing described current pending DTMF if arrive, and processes described current pending DTMF if do not arrive continuation.
6. a device of processing dual-tone multifrequency, is characterized in that, comprising:
Determining unit, for receiving the event message of current pending DTMF, determines the event type of described event message;
Setting unit, for the event type of the described event message determined according to described determining unit, arranges the treatment state of described current pending DTMF;
Processing unit, for according to the treatment state of the described current pending DTMF of described setting unit setting, processes described current pending DTMF;
Wherein, described setting unit, specifically for:
When the event type of described event message is that while starting event message, the treatment state of described current pending DTMF is set to armed state;
In the time that the event type of described event message is End Event message, the treatment state of described current pending DTMF is set to end process state;
In the time that the event type of described event message is intermediate event message, judges whether to record described event message, and the treatment state of described current pending DTMF is set according to judged result.
7. device as claimed in claim 6, is characterized in that, described setting unit arranges the treatment state of described current pending DTMF according to judged result, specifically for:
In the time recording described event message, according to the event information of described event message, upgrade the corresponding event information having recorded;
In the time not recording described event message, judge whether the end time stamp of described current pending DTMF is greater than current processing time stamp; If the treatment state of described current pending DTMF is set to armed state; The treatment state of described current pending DTMF is set to done state if not.
8. device as claimed in claim 7, it is characterized in that, described setting unit is further used for, be while starting event message at the event type of described event message, store the event information of described event message, described event information comprises event value, performance number, timestamp, beginning event flag, End Event mark and event width; And, in the time that the event type of described event message is End Event message, the end time stamp of described current pending DTMF is set, and stores the event information of described event message; And, be intermediate event message for the event type at described event message, and the end time of described current pending DTMF stamp is greater than current processing time when stamp, store the event information of described event message.
9. device as claimed in claim 6, is characterized in that, described processing unit, specifically for:
In the time of the armed statees such as the treatment state of described current pending DTMF is, the processing function of current pending DTMF described in 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 is when just at treatment state, judge whether described current pending DTMF has end time stamp, and process described current pending DTM F according to judged result.
10. device as claimed in claim 9, is characterized in that, described processing unit is processed described current pending DTMF according to judged result, specifically for:
In the time that judgement does not have end time stamp and receive the intermediate event message of described current pending DTMF in the time threshold of setting, continue to process described current pending DTMF;
In the time that judgement does not have end time stamp and do not receive the intermediate event message of described current pending DTMF in the time threshold of setting, judge whether the event width of described current pending DTMF exceedes the event width threshold value of setting; If stop processing described current pending DTMF, continue to process if not described current pending DTMF;
In the time that judgement has the end time to stab, judge whether current processing time stamp arrives the end time stamp of described current pending DTMF, stops processing described current pending DTMF if arrive, and processes described current pending DTMF if do not arrive continuation.
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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