JP4497824B2 - Telephone housing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a telephone housing equipment, for example, those selected IP network and public telephone network and (PSTN) phone accommodating apparatus can be applied to telephone communication system to execute the communication of the telephone that accommodates is there.
[0002]
[Prior art]
The traditional public telephone network (PSTN) focuses on how to relay a voice signal, and communicates in a band of 3.4 kHz or less. For this reason, the terminal (general telephone) side treats a signal in a band of 3.4 kHz or more as an unnecessary signal, as in the network side.
[0003]
On the other hand, with the rapid expansion of broadband in recent years, not only transmission equipment on the network side has become compatible with broadband, but also subscriber lines are being expanded to broadband lines by ADSL and light, and end-to-end Wideband voice communication is now possible. As a result, broadband telephones that can handle high-quality voice communication have been proposed.
[0004]
By the way, as a VOIP-compatible gateway device that has been widespread in recent years, there is one that can accommodate both public telephones for public telephone networks and broadband telephones, and may be any of a plurality of telephones (general telephones and broadband telephones). ) Can be accommodated. In such a gateway device, it is determined whether to use an IP network or a public telephone network according to the type of telephone accommodated (or the type of telephone of the other party), and processing according to the determined network I do.
[0005]
For example, when connecting an ordinary telephone set accommodated in an IP network, the frequency characteristic of the transmission signal from the ordinary telephone is corrected, and a high-quality transmission signal is transmitted to the IP network. On the other hand, if the accommodated broadband telephone is connected to an IP network, a broadband transmission signal is given from the broadband telephone, so the function for correcting the frequency characteristics of the transmission signal described above is unnecessary. If the correction is executed, the quality is lowered.
[0006]
For this reason, the gateway device needs to have a function for identifying the type of telephone accommodated therein.
[0007]
[Problems to be solved by the invention]
As a method for identifying the telephone type, a method is conceivable in which the telephone type is set to the gateway device by using the key of the telephone or the gateway device as an input key. However, since this method requires a few keys to set the operation procedure, the operation procedure is complicated, so that a user who is not a serviceman has poor operability and may not be set appropriately.
[0008]
In addition, as a method for identifying the telephone type, the gateway device is provided with a dip switch for setting the telephone type, and the connection connector for the telephone in the gateway device is a separate connector for a general telephone and a broadband telephone. A method is also conceivable. However, fears such as dip switch setting mistakes and connection connector mistakes cannot be avoided.
[0009]
Therefore, the telephone receiving equipment that can accurately identify the type of telephone that houses are desired.
[0010]
[Means for Solving the Problems]
The telephone accommodating device of the present invention of claim 1 accommodates any of a plurality of types of telephones having different effective bandwidths during communication, and the type of the accommodated telephone is set at any timing of the call sequence. possess an automatic identifying phone type identifying means, the telephone type identifying means, the bandwidth of the signal from the receiving telephone set, the band switching component part cut into a plurality of bands, a valid signal component carved band exists a band-by-band signal detecting means for detecting whether or not, based on the detection result of the band-by-band signal detecting means, characterized by chromatic and the type determining telephone type determination section of the accommodating telephone .
[0012]
According to a second aspect of the present invention, there is provided a telephone accommodating device that accommodates any of a plurality of types of telephones having different effective bandwidths at the time of communication. an automatic identifying phone type identifying means, the telephone type identifying means, a pattern detecting section for detecting an intermittent pattern of a predetermined frequency signal intermittently incoming detected presence or absence of an intermittent pattern, an intermittent pattern contents,及beauty, And a telephone type determination unit that determines the type of the accommodation telephone based on a predetermined frequency related to the intermittent pattern.
[0014]
According to a third aspect of the present invention, there is provided a telephone accommodating device that accommodates any of a plurality of types of telephones having different effective bandwidths at the time of communication. A telephone characteristic measuring unit for automatically measuring a telephone type identifying means, wherein the telephone type identifying means measures an impedance on the side of the accommodation telephone, a voltage between two lines with the accommodation telephone, or a blocking current of the accommodation telephone. And a telephone type determining unit that determines the type of the accommodated telephone based on the measurement result of the telephone characteristic measuring unit.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
(A) First Embodiment Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. The first embodiment is characterized by a telephone accommodating device.
[0017]
FIG. 1 is a block diagram showing a detailed configuration of a telephone type identification circuit 10 in the telephone accommodating apparatus (for example, the gateway apparatus as described in the section of the related art) 1 of the first embodiment.
[0018]
The telephone type identification circuit 10 includes a general telephone having a band of 3.4 kHz or less, a first broadband telephone having a band of 7.0 kHz or less (hereinafter simply referred to as a broadband telephone), and a second broadband telephone having a band of 20 kHz or less ( Hereinafter, it is identified which one is accommodated).
[0019]
The telephone type identification circuit 10 includes band division filters 11-1 to 11-3, power calculation units 12-1 to 12-3, signal presence / absence detection units 13-1 to 13-3, and a telephone type determination unit 14. These components may be realized by an analog circuit or may be realized by a digital circuit.
[0020]
The three band division filters 11-1 to 11-3 cut the band of the signal from the telephone set 2. As shown in FIG. 2A, the first band division filter (LPF) 11-1 passes a signal component of 3.4 kHz or less, and the second band division filter (BPF) 11-2. As shown in FIG. 2 (B), a signal component of 3.4 to 7.0 kHz is passed, and the third band division filter (HPF) 11-3 is shown in FIG. 2 (C). Thus, a signal component of 7.0 kHz or more is passed.
[0021]
Each of the power calculation units 12-1 to 12-3 calculates the power for each divided band. The power calculation units 12-1 to 12-3 calculate power every 10 ms, for example.
[0022]
The signal presence / absence detectors 13-1 to 13-3 detect whether or not the signal from the telephone 2 includes a component of the divided band. Each of the signal presence / absence detection units 13-1 to 13-3 smoothes the output power from the corresponding power calculation units 12-1 to 12-3, and then compares the output power with the threshold value. When the smooth power exceeds the threshold value, The logic “1” indicating the presence of the signal component in the band is output, and the logic “0” indicating the non-existence of the signal component in the band is output when the smooth power is equal to or less than the threshold value.
[0023]
The telephone type determination unit 14 determines the type of the telephone 2 accommodated based on the detection results X to Z of signal presence / absence for each band by the signal presence / absence detection units 13-1 to 13-3. The telephone type determination unit 14 performs determination according to the truth table shown in FIG. 3, and outputs the obtained telephone type information.
[0024]
Note that the telephone type information from the telephone type determination unit 14 is given to the processing circuit of each unit that changes processing depending on the type of telephone in the telephone accommodating device 1.
[0025]
When the telephone 2 accommodated in the telephone accommodating device 1 is a general telephone, the band is 3.4 kHz or less, so the signal presence / absence detection units 13-1 to 13-3 detect the presence / absence of the signal X for each band. ˜Z becomes “100”, and as a result, the telephone type determination unit 14 determines that the accommodation telephone 2 is a general telephone.
[0026]
Further, when the telephone 2 accommodated in the telephone accommodating device 1 is a broadband telephone, the band is 7.0 kHz or less, and therefore the presence / absence detection of signals for each band is detected by the signal presence / absence detection units 13-1 to 13-3. The results X to Z are “110”, and as a result, the telephone type determination unit 14 determines that the accommodation telephone 2 is a broadband telephone.
[0027]
Further, when the telephone 2 accommodated in the telephone accommodating device 1 is an audio band telephone, the band is 20 kHz or less, so that the signal presence / absence detection units 13-1 to 13-3 detect the presence / absence of a signal for each band. X to Z is “111”, and as a result, the telephone type determination unit 14 determines that the accommodating telephone 2 is an audio band telephone. Even when the signal presence / absence detection results X to Z by the signal presence / absence detection units 13-1 to 13-3 are "101", the highest band component is included, so Judge as phone (estimate).
[0028]
Here, the signal presence / absence detection results X to Z by the signal presence / absence detection units 13-1 to 13-3 cannot be “000”, “001”, “010”, or “011”. However, in this case, the accommodation telephone 2 is determined (estimated) as a general telephone so that a minimum telephone call can be guaranteed.
[0029]
Note that the signal from the telephone set 2 used for the type determination as described above is not limited to the transmission signal, but may be a signal in a call sequence stage before the telephone enters the communication state, and noise output from the telephone set 2. (Including background noise). Even if it is noise, it can be determined if it is affected by the band limitation of the telephone.
[0030]
According to the first embodiment, since the determination is based on the difference in the effective bandwidth depending on the type of the telephone, the type of the accommodated telephone can be accurately identified, and the automatic determination is performed. Incorrect setting by the person cannot occur.
[0031]
(B) Second Embodiment Next, a second embodiment of the present invention will be described with reference to the drawings. The second embodiment is characterized by a telephone receiving equipment.
[0032]
FIG. 4 is a block diagram showing a detailed configuration of the telephone type identification circuit 20 in the telephone accommodating apparatus 1A of the second embodiment.
[0033]
The telephone type identification circuit 20 of the second embodiment also identifies which of a general telephone, a broadband telephone, and an audio band telephone is accommodated.
[0034]
The telephone type identification circuit 20 includes two filters 21-1, 21-2, pulsing circuits 22-1, 22-2, pattern determination units 23-1, 23-2, and a telephone type determination unit 24.
[0035]
The first filter (BPF) 21-1 passes only the first specific frequency component (for example, 6 kHz), and the second filter 21-2 (BPF) passes the second specific frequency component ( For example, only 12 kHz) is allowed to pass.
[0036]
In the case of the second embodiment, as shown in FIG. 6 (A), the broadband telephone stops sending the first specific frequency signal (for example, 6 kHz) for 200 ms after sending 200 ms. As shown in FIG. 6 (B), the audio band telephone sets the second specific frequency signal (for example, 12 kHz) to 200 ms and stops transmission for 200 ms. The transmission and the transmission stop are repeated a predetermined number of times.
[0037]
The pulsing circuits 22-1 and 22-2 convert the output signals from the corresponding filters 21-1 and 21-2 into pulse signals, respectively. For example, the pulsing circuits 22-1 and 22-2 obtain the envelope of the input signal and then convert it into a pulse signal by comparing it with a threshold level.
[0038]
The pattern determination units 23-1 and 23-2 determine whether or not the output signals of the corresponding pulsing circuits 22-1 and 22-2 have a predetermined pattern as shown in FIG. It is. Each of the pattern determination units 23-1 and 23-2 outputs a logic “1” when the pattern is a predetermined pattern, and outputs a logic “1” when the pattern is not a predetermined pattern.
[0039]
The telephone type determination unit 24 determines the type of the telephone 2 accommodated based on the determination results by the pattern determination units 23-1 and 23-2. The telephone type determination unit 24 determines the reception telephone 2 when the output combination of both the pattern determination units 23-1 and 23-2 is “00” at the determination timing (when it is recognized that the reception telephone 2 is off-hooked). When it is determined that the telephone is a general telephone and the combination of the outputs of both the pattern determination units 23-1 and 23-2 is "10", the accommodation telephone 2 is determined to be a broadband telephone, and the outputs of both the pattern determination units 23-1 and 23-2 When the combination is “01”, the accommodating telephone 2 is determined as an audio band telephone.
[0040]
FIG. 5 shows a main configuration of the broadband telephone or the audio band telephone according to the second embodiment.
[0041]
In FIG. 5, the broadband telephone or the audio band telephone (represented by reference numeral 2 </ b> A) includes an oscillation control unit 30, a specific frequency oscillator 31, and a superimposer 32.
[0042]
When an off-hook detection signal from an off-hook detection sensor (not shown) is given, the oscillation control unit 30 gives an oscillation control signal as shown in FIG.
[0043]
The specific frequency oscillator 31 oscillates and outputs a specific frequency during a logic “1” period of the oscillation control signal from the oscillation control unit 30 and stops outputting during a logic “0” period of the oscillation control signal. The specific frequency oscillator 31 of the broadband telephone oscillates a first specific frequency (for example, 6 kHz), and the specific frequency oscillator 31 of the audio band telephone oscillates a second specific frequency (for example, 12 kHz).
[0044]
The superimposer 32 superimposes the oscillation output from the specific frequency oscillator 31 on the path to the accommodated telephone accommodating device.
[0045]
When the telephone 2 accommodated in the telephone accommodating device 1A is a general telephone, even if the telephone 2 is off-hooked, intermittent burst oscillation is not performed with the first frequency and the second frequency, and as a result, the telephone The outputs of the pattern determination units 23-1 and 23-2 of the accommodation apparatus 1A are “00”, and the telephone type determination unit 24 determines that the accommodation telephone 2 is a general telephone.
[0046]
When the telephone 2 accommodated in the telephone accommodating apparatus 1A is a broadband telephone, intermittent burst oscillation at the first frequency is performed when the telephone 2 is off-hooked. As a result, the telephone accommodating apparatus 1A The pattern determination units 23-1 and 23-2 output “10”, and the telephone type determination unit 24 determines that the accommodation telephone 2 is a broadband telephone.
[0047]
Further, when the telephone 2 accommodated in the telephone accommodating apparatus 1A is an audio band telephone, intermittent burst oscillation at the second frequency is performed when the telephone 2 is off-hooked. As a result, the telephone accommodating apparatus The outputs of the pattern determination units 23-1 and 23-2 of 1A are “01”, and the telephone type determination unit 24 determines that the accommodation telephone 2 is an audio band telephone.
[0048]
According to the second embodiment, a specific type of telephone performs intermittent burst oscillation at a predetermined frequency, and the type of the accommodated telephone is determined based on whether or not the intermittent burst oscillation is received. Therefore, the type of the accommodated telephone can be accurately identified, and since automatic determination is performed, there is no possibility of erroneous setting by the user.
[0049]
Further, according to the second embodiment, since the predetermined frequency is determined in relation to the effective bandwidth of the telephone, the type of the accommodated telephone can be accurately identified from this point.
[0050]
FIG. 7 is a timing chart of each part for explaining a modified embodiment of the second embodiment.
[0051]
In the case of this modified embodiment, as shown in FIG. 7A, the broadband telephone transmits a specific frequency signal (for example, 6 kHz) for 200 ms, stops transmitting for 200 ms, and performs this transmission and transmission stop for a predetermined number of times. On the other hand, as shown in FIG. 7C, the audio band telephone sets the same specific frequency signal as described above to 300 ms, stops sending it for 100 ms, and stops sending and stopping for a predetermined number of times. Repeat.
[0052]
Therefore, when these signals are converted into pulse signals, the combinations of periods of logic “1” and “0” shown in FIGS. 7B and 7D are obtained. Can be discriminated. A case where the pulse signal shown in FIGS. 7B and 7D cannot be obtained is a case where the accommodating telephone 2 is a general telephone.
[0053]
(C) Third Embodiment Next, a third embodiment of the present invention will be described with reference to the drawings. The third embodiment is characterized by a telephone receiving equipment.
[0054]
FIG. 8 is a block diagram showing a detailed configuration of the telephone type identification circuit 40 in the telephone accommodating device 1B of the third embodiment.
[0055]
The telephone type identification circuit 40 of the third embodiment also identifies which of a general telephone, a broadband telephone, and an audio band telephone is accommodated.
[0056]
The telephone type identification circuit 40 includes a voltmeter 41, an ammeter 42, an impedance calculation unit 43, and a telephone type determination unit 44.
[0057]
The voltmeter 41 measures the voltage between the two lines L1 and L2 connected to the accommodation telephone 2, and digitally outputs the obtained voltage value.
[0058]
The ammeter 42 measures the blocking current when the accommodating telephone 2 blocks the two wires L1 and L2, and digitally outputs the obtained current value.
[0059]
The impedance calculator 43 determines the impedance on the telephone 2 side as viewed from the telephone accommodating device 1B based on the measurement results of the voltmeter 41 and the ammeter 42.
[0060]
The telephone type determination unit 44 determines the type of the accommodation telephone 2 based on the impedance obtained by the impedance calculation unit 43. The telephone type determination unit 44 determines that the telephone is a general telephone when the impedance is near 600Ω, determines that the telephone is a broadband telephone when the impedance is near 300Ω, and determines that the telephone is an audio band telephone when the impedance is near 900Ω. The telephone type determination unit 44 determines, for example, when the accommodation telephone 2 is off-hook.
[0061]
Here, if the broadband telephone and the audio band telephone do not take such an impedance when they are off-hook, the configuration shown in FIG. 9A or FIG. 2) (represented by reference numeral 2B).
[0062]
In FIG. 9, the broadband telephone or audio band telephone 2 </ b> B includes a resistance element 50, a switch 51, and a switch control unit 52.
[0063]
In the case of a broadband telephone, as shown in FIG. 9A, the resistance element 50 and the switch 51 are connected in series between the two lines L1 and L2 connected to the opposite telephone accommodating device 1B. The resistance element 50 of the broadband telephone is selected to have a resistance value that makes the impedance on the telephone 2B side viewed from the telephone accommodating device 1B near 300Ω when the switch 51 is on.
[0064]
In the case of an audio band telephone, as shown in FIG. 9B, the resistance element 50 and the switch 51 are one of the two lines L1 and L2 connected to the opposite telephone accommodating apparatus 1B (L1 in the figure). The resistor element 50 is connected in series so that it can be controlled. The resistance element 50 of the audio band telephone is selected to have a resistance value that makes the impedance on the telephone 2B side viewed from the telephone accommodating device 1B near 900Ω when the switch 51 is on.
[0065]
The switch control unit 52 turns on the switch 51 for a predetermined period when an off-hook detection signal from an off-hook detection sensor (not shown) is given.
[0066]
When the telephone 2 accommodated in the telephone accommodating device 1A is a general telephone, even if the telephone 2 is off-hooked, the impedance operation is not performed in the telephone 2, and as a result, the output of the impedance calculation unit 43 of the telephone accommodating apparatus 1A Becomes approximately 600Ω, and the telephone type determination unit 44 determines that the accommodation telephone 2 is a general telephone.
[0067]
When the telephone 2 accommodated in the telephone accommodating apparatus 1A is a broadband telephone, when the telephone 2 is off-hooked, the switch 51 is turned on. As a result, the output of the impedance calculating unit 43 of the telephone accommodating apparatus 1A is In the vicinity of 300Ω, the telephone type determination unit 44 determines that the accommodation telephone 2 is a broadband telephone.
[0068]
Further, when the telephone 2 accommodated in the telephone accommodating apparatus 1A is an audio band telephone, when the telephone 2 is off-hooked, the switch 51 is turned on. As a result, the output of the impedance calculating unit 43 of the telephone accommodating apparatus 1A is output. Is in the vicinity of 900Ω, and the telephone type determination unit 44 determines that the accommodated telephone 2 is an audio band telephone.
[0069]
Even if the configuration shown in FIG. 9 is not provided, the configuration of FIG. 9 can be omitted as long as the impedance differs among general telephones, broadband telephones, and audio band telephones.
[0070]
According to the third embodiment, since the type of the accommodation phone is determined based on the impedance seen on the accommodation phone side, the type of the accommodation phone can be accurately identified, Therefore, misconfiguration by the user cannot occur.
[0071]
(D) Other Embodiments In each of the above embodiments, the case where the number of types of accommodation telephones to be identified is three has been described, but it may be two or four or more.
[0072]
The second embodiment shows a case where the specific frequency is different with respect to the broadband telephone and the audio band telephone, and the specific frequency is the same for the broadband telephone and the audio band telephone in the second embodiment. Although different cases are shown, these may be combined. That is, the intermittent pattern and the specific frequency may be different. Moreover, you may make it perform intermittent transmission of a specific frequency signal also from a general telephone. There may be two or more specific frequencies that one telephone oscillates and outputs, and the specific frequency is not limited to a stable sine wave signal, and may be a signal with some modulation.
[0073]
In the third embodiment, an impedance operation is performed for a broadband telephone and an audio band telephone. However, a general telephone may be operated for impedance. Further, the accommodation telephone type may be identified based on only the voltage between the two lines instead of the impedance, or the accommodation telephone type may be identified based only on the blocking current.
[0074]
The identification timing of the accommodation telephone type is not limited to the off-hook timing as described above, and may be any timing. Further, the type of the accommodated telephone may be identified not only when the accommodated telephone is the calling party but also when the accommodated telephone is the called party. The off-hook timing is a timing that can be applied regardless of the calling side and the called side.
[0075]
An apparatus to which the telephone accommodating apparatus of the present invention is applied is not limited to a gateway apparatus, and the present invention can be applied to various apparatuses that need to identify the type of the accommodated telephone.
[0076]
【The invention's effect】
As described above, according to the present invention, the type of telephone accommodated in the telephone accommodating device can be accurately identified.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a detailed configuration of a telephone type identification circuit in a telephone accommodating device according to a first embodiment.
FIG. 2 is a frequency characteristic diagram showing pass bands of three band-separating filters according to the first embodiment.
FIG. 3 is an explanatory diagram of determination logic of a telephone type determination unit according to the first embodiment.
FIG. 4 is a block diagram showing a detailed configuration of a telephone type identification circuit in the telephone accommodating apparatus of the second embodiment.
FIG. 5 is a block diagram showing a main configuration of a telephone according to a second embodiment.
FIG. 6 is a timing chart of each part of the second embodiment.
FIG. 7 is a timing chart of each part of a modified embodiment of the second embodiment.
FIG. 8 is a block diagram showing a detailed configuration of a telephone type identification circuit in the telephone accommodating apparatus of the third embodiment.
FIG. 9 is a block diagram showing a main configuration of a telephone according to a third embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1, 1A, 1B ... Telephone accommodation apparatus, 2, 2A, 2B ... Telephone, 10, 20, 40 ... Telephone type identification circuit, 11-1 to 11-3 ... Band division filter, 12-1 to 12-3 ... Power Calculation unit, 13-1 to 13-3, signal presence / absence detection unit, 14, 24, 44, telephone type determination unit, 21-1, 21-2, filter, 22-1, 22-2, pulsed circuit, 23 -1, 23-2 ... pattern determination unit, 30 ... oscillation control unit, 31 ... specific frequency oscillator, 32 ... superimposer, 41 ... voltmeter, 42 ... ammeter, 43 ... impedance calculation unit, 50 ... resistance element, 51 ... Switch, 52 ... Switch control unit.

Claims (3)

In a telephone accommodating device that accommodates any of a plurality of types of telephones having different effective bandwidths during communication,
Having a telephone type identifying means for automatically identifying the type of the accommodated telephone at any timing of the call sequence;
The telephone type identification means is
A band dividing unit for dividing a band of a signal from the accommodation telephone into a plurality of bands;
Band-specific signal presence / absence detecting means for detecting whether or not there is an effective signal component in the separated band;
A telephone accommodating device, comprising: a telephone type determining unit that determines a type of the accommodating telephone based on a detection result of the signal presence / absence detecting unit for each band. In a telephone accommodating device that accommodates any of a plurality of types of telephones having different effective bandwidths during communication,
Having a telephone type identifying means for automatically identifying the type of the accommodated telephone at any timing of the call sequence;
The telephone type identification means is
A pattern detector for detecting an intermittent pattern of a predetermined frequency signal that arrives intermittently;
A telephone accommodation device, comprising: a telephone type determination unit that determines the type of the accommodation telephone based on presence / absence of detection of an intermittent pattern, content of the intermittent pattern, and a predetermined frequency related to the intermittent pattern. In a telephone accommodating device that accommodates any of a plurality of types of telephones having different effective bandwidths during communication,
Having a telephone type identifying means for automatically identifying the type of the accommodated telephone at any timing of the call sequence;
The telephone type identification means is
A telephone characteristic measuring unit that measures the impedance of the accommodation telephone, the voltage between the two lines with the accommodation telephone, or the blocking current of the accommodation telephone;
A telephone accommodating device, comprising: a telephone type determining unit that determines a type of the accommodating telephone based on a measurement result of the telephone characteristic measuring unit.

Images