CN203691640U - Wireless access device - Google Patents
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- CN203691640U CN203691640U CN201320849700.9U CN201320849700U CN203691640U CN 203691640 U CN203691640 U CN 203691640U CN 201320849700 U CN201320849700 U CN 201320849700U CN 203691640 U CN203691640 U CN 203691640U
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Abstract
The utility model is suitable for the communication field and provides a wireless access device which comprises a button unit; an early stage control signal generation unit with the input terminal connected to the output terminal of the button unit; a filtering unit with the control terminal connected to the output terminal of the early stage control signal generation unit, and the input terminal connected to the output terminal of the button unit; a processing unit with the input terminal connected to the output terminal of the button unit; and a wireless communication unit with the first communication terminal connected to the communication terminal of the button unit and the second communication terminal connected to the data terminal of the processing unit. The wireless access device utilizes the digital filter in an uplink audio frequency loop to block the dual tone multi frequency (DTMF) signals of an uplink audio frequency channel so that the receiving terminal of an opposite side can not identify the DTMF signals transmitted from the audio frequency channel, thereby thoroughly solving the problems of low success rate of secondary dialing, high false alarm rate and vulnerablity to wireless radio frequency interference of a present wireless access device; in addition, the wireless access device is economic, practical, simple and effective.
Description
Technical field
The utility model belongs to the communications field, relates in particular to a kind of radio reception device.
Background technology
Along with wireless technology development with rapid changepl. never-ending changes and improvements, radio reception device more and more appears at office, family place, in existing wireless access system, no matter be GSM(Global System for Mobile Communications global system for mobile communications), CDMA(Code Division Multiple Access code division multiple access), or WCDMA(Wideband Code Division Multiple Access Wideband Code Division Multiple Access (WCDMA)), TD-SCDMA(Time Division-Synchronous Code Division Multiple synchronous CDMA (Code Division Multiple Access) of Access time-division) etc. radio reception device generally all comprise: main control chip, wireless module, user interface circuit (Subscriber Line Interface Circuit, SLIC), dual-tone multifrequency (Dual Tone Multi Frequency, DTMF) generation and decoding circuit.This radio reception device is because installation, easy to maintenance, the features such as use cost is low are widely applied to a lot of fields, but in this wireless access system, the success rate of two-stage dialing is not high to be endured to the fullest extent and denounce always, be difficult to for many years thorough solution, become a larger difficult problem in industry.
So-called two-stage dialing refers to, the dialing of user in communication process, being the signal transmission between end-to-end user, is mainly to utilize the be transmitted information transmission of dtmf signal on voice-frequency channel, and two-stage dialing function is mainly used in services such as dialing extension set, information service center, telecommunications, bank.
The two-stage dialing flow process of wireless access system is at present, under talking state, external common phone dialing produces dtmf tone signal frequently, again by delivering to the microphone (Micphone of wireless module after SLIC line transfer, MIC) end, amplified by wireless module, analog-to-digital conversion, sends to the other side by base station after the processing such as audio frequency frequency response curve shaping again.In whole process, dtmf signal has passed through the processing such as the amplification, analog-to-digital conversion, frequency response curve shaping of conversion, the wireless module of SLIC, and aerial wireless radio transmission, there is distortion in the dtmf signal that inevitably makes distant terminal receive, interrupted phenomenon, if this phenomenon is serious, the other side just can not correctly parse dtmf signal, causes two-stage dialing failure.
Existing a kind of improvement scheme is, system is in communication process, utilize the testing circuit of DTMF to monitor at any time dtmf signal input, in the time that main control chip has detected DTMF input, disconnect upstream tones passage, and parse the numerical value of input dtmf signal, then main control chip passes through AT(Attention, order) instruction notification wireless module in the mode of signalling path by corresponding DTMF numerical value by being wirelessly sent to network, produce corresponding dtmf signal to receiving terminal by network terminal.The change of this design principle, really can effectively eliminate distortion and the interrupted phenomenon of dtmf signal in voice-frequency channel transmitting procedure, but still there is larger defect in design itself, that is exactly: because DTMF detection chip detects the identification time that dtmf signal generally needs 40ms left and right, so receive that at main control chip DTMF detection chip sends effective DTMF message and close before upstream tones path, in fact there is the dtmf signal of this few tens of milliseconds to be delivered to the other side by voice-frequency channel, if the DTMF detection sensitivity of distant terminal switch is also high, this leaks dtmf signal in the past also can be treated as an effective signal, will cause like this phenomenon of double sign, such as dialling ' 102 ', the other side may detect becomes ' 110022 ', if and by the DTMF detection sensitivity raising in radio reception device, the detection time of shortening DTMF, the probability that this can increase again DTMF wrong report, affects user's use.
Another kind of improvement scheme is, between the audio frequency uplink of the SLIC in wireless access system and wireless module, add a delay buffer circuit, the detection signal of DTMF detection chip is placed between delay circuit and SLIC, and the dtmf signal that enters wireless module is the dtmf signal after delay buffer, in the time that main control chip is closed upstream tones passage, dtmf signal is also in cache lines, do not arrive wireless module, so just guarantee that DTMF detection chip leakage dtmf signal in the past can not send through wireless module.This scheme can solve the problem of two-stage dialing in theory, no matter but adopt digital delay circuit or mode delay line, circuit all and complicated, the as easy as rolling off a log interference that is subject to less radio-frequency, and delay buffer device is expensive, so seldom application in actual design.
Utility model content
The object of the utility model embodiment is to provide a kind of radio reception device, is intended to solve that current radio reception device two-stage dialing success rate is low, rate of false alarm is high and be subject to the problem that less radio-frequency disturbs.
The utility model embodiment is achieved in that a kind of radio reception device, and described equipment comprises:
In the time of two-stage dialing, produce the push-button unit of dtmf signal;
The early stage manipulation signal generation unit that generates early stage manipulation signal according to described dtmf signal, the input of described early stage manipulation signal generation unit is connected with the output of described push-button unit;
According to described early stage manipulation signal, the high-frequency signal in described dtmf signal is carried out to filtering, the filter unit of the parsing with blocking-up to described dtmf signal, the control end of described filter unit is connected with the output of described early stage manipulation signal generation unit, and the input of described filter unit is connected with the output of push-button unit;
Close up voice-frequency channel according to described dtmf signal control, and generate the processing unit of AT instruction, the input of described processing unit is connected with the output of described push-button unit;
Described AT instruction is carried out being sent to after signal processing to the wireless communication unit of network terminal, the first communication ends of described wireless communication unit is connected with the communication ends of described push-button unit, and the second communication end of described wireless communication unit is connected with the data terminal of described processing unit.
Further, described filter unit comprises:
Detect described early stage manipulation signal, and generate the early stage manipulation detecting signal unit that starts filtering signal, the control end that the input of described early stage manipulation detecting signal unit is described filter unit according to described early stage control signal;
According to described startup filtering signal, the high-frequency signal in described dtmf signal is carried out to filtering, the filter of the parsing with blocking-up to described dtmf signal, the input of described filter is the input of described filter unit, the output of described filter is the output of described filter unit, and the control end of described filter is connected with the output of described early stage manipulation detecting signal unit.
Closer, described processing unit comprises:
Detect described dtmf signal, and export the dtmf signal detecting unit of effective dtmf signal, the input that the input of described dtmf signal detecting unit is described processing unit;
Generate and close audio signal according to described effective dtmf signal, close up voice-frequency channel to control wireless module, and according to the main control chip of described effective dtmf signal generation AT instruction, the control end of described main control chip is connected with the output of described dtmf signal detecting unit, the data terminal that the data terminal of described main control chip is described processing unit.
Closer, described filter is iir digital filter.
Closer, described early stage manipulation detecting signal unit is HT9170 type DTMF detection chip.
The utility model embodiment utilizes the digital filter in the upstream tones loop in wireless communication unit to complete the blocking-up of the dtmf signal to upstream tones passage, thereby can not being identified, the other side's receiving terminal from voice-grade channel, passes dtmf signal in the past, allow the dtmf signal that radio reception device transmits by signalling path become clean, unique, thoroughly solve that radio reception device two-stage dialing success rate is not high, rate of false alarm is high and be subject to the problem that less radio-frequency disturbs, there is economy, practical, simply, effectively feature.
Accompanying drawing explanation
The structure chart of the radio reception device that Fig. 1 provides for the utility model one embodiment;
The preferred exemplary construction figure of the radio reception device that Fig. 2 provides for the utility model one embodiment;
The secondary-dialing method based on wireless access system that Fig. 3 provides for the utility model embodiment adopts the signal timing diagram of DTMF detection chip HT9170 output;
Dtmf signal frequency table corresponding to button in the secondary-dialing method based on wireless access system that Fig. 4 provides for the utility model embodiment;
Audio frequency filtering frequency response figure based on 1209Hz frequency in the secondary-dialing method based on wireless access system that Fig. 5 provides for the utility model embodiment;
Audio frequency filtering frequency response figure based on 1366Hz frequency in the secondary-dialing method based on wireless access system that Fig. 6 provides for the utility model embodiment;
Audio frequency filtering frequency response figure based on 1477Hz frequency in the secondary-dialing method based on wireless access system that Fig. 7 provides for the utility model embodiment;
The up frequency response curve of wireless communication unit audio frequency in the secondary-dialing method based on wireless access system that Fig. 8 provides for the utility model embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
The utility model embodiment utilizes the digital filter in the upstream tones loop in wireless communication unit to complete the blocking-up of the dtmf signal to upstream tones passage, thereby the other side's receiving terminal can not be identified from voice-grade channel and pass dtmf signal in the past, thoroughly solved that radio reception device two-stage dialing success rate is not high, rate of false alarm is high and be subject to the problem that less radio-frequency disturbs.
Below in conjunction with specific embodiment, realization of the present utility model is described in detail:
Fig. 1 shows the structure of the radio reception device that the utility model embodiment provides, and for convenience of explanation, only shows the part relevant to the utility model.
As the utility model one embodiment, this radio reception device comprises:
Push-button unit 11, for producing dtmf signal when the two-stage dialing;
As everyone knows, DTMF dual-tone multifrequency is made up of low frequency group and high frequency group, and referring to Fig. 4, wherein, the frequency of low frequency group comprises 697Hz, 770Hz, 852Hz and 941Hz, and the frequency of high frequency group comprises 1209Hz, 1336Hz, 1477Hz and 1633Hz.An effective dtmf signal must be made up of 2 frequencies, and a frequency is from low frequency group, and a frequency is from high frequency group, and for fixing telephone, high frequency group is only used 1209Hz, 1336Hz, tri-kinds of frequencies of 1477Hz.
Early stage manipulation signal generation unit 12, for generate early stage manipulation signal according to dtmf signal, the input that manipulates in early days signal generation unit 12 is connected with the output of push-button unit 11;
In the utility model embodiment, manipulate in early days signal EST signal and generally in 20ms, can generate detecting after dtmf signal.
As the utility model one preferred embodiment, this filter unit 13 can multiplexing wireless communication unit 15 in already present iir digital filter, with abbreviation structure, reduce costs.
In call voice, the audio frequency range of call is generally in the frequency band from 300Hz to 3.4KHz, wherein:
300Hz～500Hz frequency is the main range of sound frequency of voice;
500Hz～1KHz frequency, is the fundamental frequency region of voice, is an important frequency range;
1K～2KHz frequency, penetrating sense is obvious, and smooth and easy sense is strong;
2K～3KHz frequency is to affect the most responsive frequency range of sound lightness.
Can find out, in this frequency range of 1K～2KHz, be minimum for relative other frequency range of sensation impact of people.And our filter unit can be made decay more than 20dB for the audio signal of 1209Hz, 1336Hz, these three frequencies of 1477Hz specially, allow touch-tone signal become to only have the tone signal of low frequency group, leak dtmf signal in the past thereby distant terminal can not be parsed from voice-frequency channel, can guarantee again the voice quality of normal talking.
Because the setting of filter unit is near very narrow frequency range (being less than positive and negative 3%) filtering high frequency group frequency, so it is also not obvious on voice call quality impact after opening, and, only in the time may having dtmf signal to occur, just open, open and do not have automatically to close again after dtmf signal for latter one minute, ensure carrying out smoothly of call.
In the utility model embodiment, detect after dtmf signal, generate and close audio signal, close up voice-frequency channel to control wireless module, and generate AT instruction according to dtmf signal.
In the utility model embodiment, DTMF detecting unit in general switching equipment can not be lower than 40ms for the duration length judgement of an effective dtmf signal, and the generally appearance in 20ms of early stage manipulation signal EST of early stage manipulation detecting signal unit in DTMF detection chip, can not be detected as an effective dtmf signal so drain to the dtmf signal length of the other side's sense terminals, and after digital filter is opened, there will be no effective dtmf signal to be delivered to distant terminal by voice-frequency channel.
It is worth emphasizing that, the utility model embodiment is detecting after early stage manipulation signal that startup is to dtmf signal filtering, can effectively prevent from draining to the dtmf signal that is greater than 40ms of the other side's sense terminals, and after filtering, do not affect both sides' call function, that is to say, only early stage manipulation signal to be detected, and do not detect clear and definite, when effective dtmf signal, it is the upstream tones path that can not break, therefore user does not have any bad sensation, avoid once the early stage manipulation signal upstream tones path that breaks being detected, thereby there is interrupted sensation in the user's communication causing.
And, once the utility model embodiment detects early stage manipulation signal, can open at least 1 minute the High frequency filter of dtmf signal, follow-up dtmf signal all can be blocked like this, the dtmf signal of the 20ms that early stage manipulation signal demand detects can not leak in the past.If there is no dtmf signal in one minute, think and enter call mode, just close the High frequency filter function to dtmf signal.
The utility model embodiment utilizes the digital filter in the upstream tones loop in wireless communication unit to complete the blocking-up of the dtmf signal to upstream tones passage, thereby can not being identified, the other side's receiving terminal from voice-grade channel, passes dtmf signal in the past, allow the dtmf signal that radio reception device transmits by signalling path become clean, unique, thoroughly solve that radio reception device two-stage dialing success rate is not high, rate of false alarm is high and be subject to the problem that less radio-frequency disturbs, there is economy, practical, simply, effectively feature.
Fig. 2 shows the preferred exemplary construction of the radio reception device that the utility model embodiment provides, and for convenience of explanation, only shows the part relevant to the utility model.
As the utility model one embodiment, filter unit 13 comprises:
Early stage manipulation detecting signal unit 131, for detection of early stage manipulation signal, and generates and starts filtering signal according to early stage control signal, and the input that manipulates in early days detecting signal unit 131 is the control end of filter unit 13;
Filter 132, for the high-frequency signal of dtmf signal being carried out to filtering according to starting filtering signal, parsing with blocking-up to dtmf signal, the input of filter 132 is the input of filter unit 13, the output of filter 132 is the output of filter unit 13, and the control end of filter 132 is connected with the output of early stage manipulation detecting signal unit 131.
As the utility model one preferred embodiment, filter 132 can adopt iir digital filter to realize, and can also adopt in wireless communication unit 15 already present up iir digital filter as filter unit, the high frequency frequency of filtering dtmf signal, with abbreviation structure, reduce costs.
Early stage manipulation detecting signal unit 131 can adopt HT9170 type DTMF detection chip to realize.
As the utility model one preferred embodiment, can make filter unit open in very first time section according to starting filtering signal, high-frequency signal in dtmf signal is carried out to filtering, high-frequency signal in dtmf signal is carried out to filtering, this very first time section can be set according to the actual requirements, in the utility model embodiment, be preferably one minute.
In the utility model embodiment, by early stage manipulation signal EST is detected, and will manipulate in early days signal EST signal as the unlocking condition that starts the up iir digital filter of wireless communication unit, after iir digital filter is opened, it can keep one minute continuously, if within one minute, do not receive effective dtmf signal, main control chip can be closed iir digital filter automatically again, if received again DTMF useful signal in one minute, main control chip can recalculate the time of one minute.Only have and effective dtmf signal numerical value detected and pass to after main control chip when DTMF detecting unit, main control chip just notifies wireless communication unit to close up voice-frequency channel, and corresponding DTMF numerical value is sent to wireless module by AT instruction, allow module send network terminal in the mode of signaling, thereby guarantee that the other side correctly parses corresponding DTMF numerical value, with reference to figure 1.
When external landline telephone button dials phone number, can transmit by the slic circuit in radio reception device the dtmf signal of corresponding button, when the DTMF detecting unit in equipment detects after dtmf signal, the numerical value of DTMF can be passed to main control chip, then by main control chip, the numerical value of DTMF be sent to wireless communication unit by AT instruction.
The up audio signal of slic circuit is delivered to the MIC1 input of wireless communication unit, amplify through simulation successively, analog-to-digital conversion, numeral is amplified, after the processing such as IIR/FIR filtering, send into modulating unit, IIR/FIR filter was to send frequency response curve shaping for doing audio frequency originally, but in actual design, just can meet the adjustment that sends frequency response curve with Finite Impulse Response filter, left iir digital filter just can be used for dtmf signal to process, and whether iir digital filter and Finite Impulse Response filter can separately be controlled and work.
Table 1 is the parameter configuration table of iir filter, in iir filter, there are four groups of filtering, with wherein three groups respectively 1209Hz, 1336Hz, 1477Hz are carried out the EQ filtering of high Q value, the wherein corresponding 1209Hz of IIR Filter1, the corresponding 1477Hz frequency of the corresponding 1366Hz of IIR Filter 2, IIR Filter 3, by second-order filter coefficient a1, b1, a2, b2 and a0 are set, form the audio frequency filtering frequency response waveform shown in Fig. 5 to Fig. 7.
Table 1
| ? | a1 | b1 | a2 | b2 | a0 |
| IIR?Filter1 | -18542 | -18542 | 31851 | 30946 | 31861 |
| IIR?Filter2 | -18541 | -15841 | 31792 | 30828 | 31803 |
| IIR?Filter3 | -12675 | -12675 | 31738 | 30721 | 31749 |
| IIR? |
0 | 0 | 0 | 0 | 32767 |
The up frequency response curve of wireless communication unit audio frequency is referring to Fig. 8, wherein thicker solid line L1 is the primitive curve that does not add IIR filtering and FIR filtering, thinner solid line L2 is the frequency response curve that has added IIR filtering and FIR filtering, in existing national standard CTA audio frequency network access testing, (comprise 2G, 3G), main test transmitting-receiving loudness, echo and the audio distortion at 1020Hz, the frequency response curve of up-downgoing is no longer done to special requirement, mainly take sense of hearing as main.Therefore can find out, even if the utility model embodiment has added the filtering processing of DTMF high frequency frequency, also can meet existing national standard completely, and dtmf signal input do not detected in one minute of the appearance of EST signal, main control chip can be cancelled the filter function of DTMF frequency, further guarantees the audio quality of call.
As the utility model one embodiment, processing unit 14 comprises:
Dtmf signal detecting unit 141, for detection of dtmf signal, and exports effective dtmf signal, and the input of dtmf signal detecting unit 141 is the input of processing unit 14;
Main control chip 142, for generating and close audio signal according to effective dtmf signal, close up voice-frequency channel to control wireless module, and generate AT instruction according to effective dtmf signal, the control end of main control chip 142 is connected with the output of dtmf signal detecting unit 141, and the data terminal of main control chip 142 is the data terminal of processing unit 14.
In the utility model embodiment, DTMF detecting unit in general switching equipment can not be lower than 40ms for the duration length judgement of an effective dtmf signal, and the generally appearance in 20ms of early stage manipulation signal EST of early stage manipulation detecting signal unit in DTMF detection chip, can not be detected as an effective dtmf signal so drain to the dtmf signal length of the other side's sense terminals, and after digital filter is opened, there will be no effective dtmf signal to be delivered to distant terminal by voice-frequency channel.
Fig. 3 shows the signal timing diagram of conventional DTMF detection chip HT9170, wherein, Tone is the audio signal that comprises dtmf signal, and EST is early stage manipulation signal, and RT/GT is input/output signal, can be set the time that audio frequency obtains and discharges by connecting peripheral resistance, electric capacity, D0-D3 receives the ternary output signal of data output end, when OE=" H ", and can when output, when OE=" L ", high-impedance state.
As can be seen from the figure in the time that dtmf signal occurs, EST signal in a short period of time (tDP can be less than 20ms) become high level from low level, this signal can be notified rapidly the up iir digital filter of main control chip open wireless module, the high frequency frequency of filtering DTMF.
When DTMF detecting unit detects effective dtmf signal numerical value and passes to after main control chip, main control chip notice wireless communication unit is closed up voice-frequency channel, and corresponding DTMF numerical value is sent to wireless module by AT instruction, allow module send network terminal in the mode of signaling.
The utility model embodiment utilizes the digital filter in the upstream tones loop in wireless communication unit to complete the blocking-up of the dtmf signal to upstream tones passage, thereby can not being identified, the other side's receiving terminal from voice-grade channel, passes dtmf signal in the past, allow the dtmf signal that radio reception device transmits by signalling path become clean, unique, thoroughly solve that radio reception device two-stage dialing success rate is not high, rate of false alarm is high and be subject to the problem that less radio-frequency disturbs, there is economy, practical, simply, effectively feature.
And, even occur, the false judgment of voice is produced to wrong early stage manipulation signal in normal talking, wireless communication unit can not turn-off whole upstream tones path yet, and just increase the filtering to dtmf signal high frequency frequency, can not produce obvious impact to both call sides, only have when main control chip and receive effective dtmf signal, just can control wireless communication unit and close up voice-frequency channel.
It is worth mentioning that, the radio reception device that the utility model embodiment provides can also be applied to IP network voice call in the processing of dtmf signal.
These are only preferred embodiment of the present utility model, not in order to limit the utility model, all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.
Claims (5)
1. a radio reception device, is characterized in that, described equipment comprises:
In the time of two-stage dialing, produce the push-button unit of dtmf signal;
The early stage manipulation signal generation unit that generates early stage manipulation signal according to described dtmf signal, the input of described early stage manipulation signal generation unit is connected with the output of described push-button unit;
According to described early stage manipulation signal, the high-frequency signal in described dtmf signal is carried out to filtering, the filter unit of the parsing with blocking-up to described dtmf signal, the control end of described filter unit is connected with the output of described early stage manipulation signal generation unit, and the input of described filter unit is connected with the output of push-button unit;
Close up voice-frequency channel according to described dtmf signal control, and generate the processing unit of AT instruction, the input of described processing unit is connected with the output of described push-button unit;
Described AT instruction is carried out being sent to after signal processing to the wireless communication unit of network terminal, the first communication ends of described wireless communication unit is connected with the communication ends of described push-button unit, and the second communication end of described wireless communication unit is connected with the data terminal of described processing unit.
2. equipment as claimed in claim 1, is characterized in that, described filter unit comprises:
Detect described early stage manipulation signal, and generate the early stage manipulation detecting signal unit that starts filtering signal, the control end that the input of described early stage manipulation detecting signal unit is described filter unit according to described early stage control signal;
According to described startup filtering signal, the high-frequency signal in described dtmf signal is carried out to filtering, the filter of the parsing with blocking-up to described dtmf signal, the input of described filter is the input of described filter unit, the output of described filter is the output of described filter unit, and the control end of described filter is connected with the output of described early stage manipulation detecting signal unit.
3. equipment as claimed in claim 1, is characterized in that, described processing unit comprises:
Detect described dtmf signal, and export the dtmf signal detecting unit of effective dtmf signal, the input that the input of described dtmf signal detecting unit is described processing unit;
Generate and close audio signal according to described effective dtmf signal, close up voice-frequency channel to control wireless module, and according to the main control chip of described effective dtmf signal generation AT instruction, the control end of described main control chip is connected with the output of described dtmf signal detecting unit, the data terminal that the data terminal of described main control chip is described processing unit.
4. equipment as claimed in claim 2, is characterized in that, described filter is iir digital filter.
5. equipment as claimed in claim 2, is characterized in that, described early stage manipulation detecting signal unit is HT9170 type DTMF detection chip.
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| CN201320849700.9U CN203691640U (en) | 2013-12-20 | 2013-12-20 | Wireless access device |
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| CN201320849700.9U CN203691640U (en) | 2013-12-20 | 2013-12-20 | Wireless access device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104735811A (en) * | 2013-12-20 | 2015-06-24 | 创扬通信技术（深圳）有限公司 | Secondary dialing method based on wireless access system and wireless access equipment |
| WO2018040742A1 (en) * | 2016-08-30 | 2018-03-08 | 中兴通讯股份有限公司 | Dialing processing method and device, and telephone |
-
2013
- 2013-12-20 CN CN201320849700.9U patent/CN203691640U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104735811A (en) * | 2013-12-20 | 2015-06-24 | 创扬通信技术（深圳）有限公司 | Secondary dialing method based on wireless access system and wireless access equipment |
| CN104735811B (en) * | 2013-12-20 | 2018-08-17 | 创扬通信技术（深圳）有限公司 | A kind of secondary-dialing method and radio reception device based on wireless access system |
| WO2018040742A1 (en) * | 2016-08-30 | 2018-03-08 | 中兴通讯股份有限公司 | Dialing processing method and device, and telephone |
| CN107800851A (en) * | 2016-08-30 | 2018-03-13 | 中兴通讯股份有限公司 | A kind of dialing process method and device, telephone set |
| CN107800851B (en) * | 2016-08-30 | 2020-08-04 | 南京中兴软件有限责任公司 | Dialing processing method and device and telephone |
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