CN203708294U - One-button call extension device - Google Patents
One-button call extension device Download PDFInfo
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- CN203708294U CN203708294U CN201320766590.XU CN201320766590U CN203708294U CN 203708294 U CN203708294 U CN 203708294U CN 201320766590 U CN201320766590 U CN 201320766590U CN 203708294 U CN203708294 U CN 203708294U
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- 238000001514 detection method Methods 0.000 claims abstract description 61
- 238000012545 processing Methods 0.000 claims abstract description 34
- 238000007493 shaping process Methods 0.000 claims description 29
- 238000000034 method Methods 0.000 claims description 20
- 230000008569 process Effects 0.000 claims description 20
- 238000001914 filtration Methods 0.000 claims description 16
- 230000011664 signaling Effects 0.000 claims description 13
- 230000004069 differentiation Effects 0.000 claims description 5
- 230000006870 function Effects 0.000 abstract description 12
- 238000013461 design Methods 0.000 abstract description 11
- 230000008901 benefit Effects 0.000 description 5
- 230000008054 signal transmission Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
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- 230000015572 biosynthetic process Effects 0.000 description 1
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Abstract
The utility model discloses a one-button call extension device. The one-button call extension device comprises a casing; an extension circuit comprising a rectifier bridge is disposed in the casing; an inner side signal terminal of the rectifier bridge is connected with a signal common terminal of a switching circuit; a first signal terminal of the switching circuit is connected with a ringing signal input terminal of a signal discriminating and processing module through a ringing detection module; a second signal terminal of the switching circuit is divided into two paths, one path is connected with a busy tone signal input terminal of the signal discriminating and processing module through a busy tone detection module, and the other path is connected with a conversation signal terminal of a conversation module; voice output and input terminals of the conversation module are respectively connected with a signal input terminal of a horn and a signal output terminal of a microphone; a control signal output terminal of the signal discriminating and processing module is connected with a control signal input terminal of the switching circuit; and a button is disposed corresponding to a button signal input terminal of the signal discriminating and processing module. Functions such as one-button call, automatic answer and hang off and the like are fulfilled on the basis of the hardware circuit design, and the one-button call extension device is stable and reliable in performance.
Description
Technical field
The utility model relates to a kind of extension set of calling out, and an espespecially a kind of key of realizing based on analog form is called out extension sets.
Background technology
One key is called out extension sets, as its name suggests, is exactly by next button, realizes the number dialing telephone call to specific extension number (or group).At present, the application scenario of a key calling extension sets is more and more extensive, such as elevator device, often need to locate to be equipped with in its car, sedan-chair top and bottom hole etc. a key and call out extension sets, to facilitate in the time of elevator reparing and emergency alarm.
Compared with ordinary telephone set, one key is called out extension sets often without keyboard, only call out and just can realize caller function by a key, also can realize multi-party inter-speaking, and the general function of all supporting called automatic-answering back device and automatic hand-up, to promptly or in particular cases can complete easily speech communication.
An existing key is called out extension sets can be divided into IP mode and analog form from realizing standard.One key of IP mode is called out extension sets and is detected and analytic signal based on Ethernet host-host protocol, to realize the functions such as key dialing (caller) and an automatic-answering back device, on-hook (called).Because measured Ethernet host-host protocol is realized, a key of this IP mode is called out extension sets and is had configuration, easy to detect, the advantage that networking flexibility is good, but in the time of signal transmission, ethernet line has limited transmission range, has greatly shortened the scope of application, has necessarily limitation.One key of analog form is called out the two-wire system analog of telephone line of extension sets based on traditional and is realized, when caller, complete dialing by button, when called, by TIP and two signal transmssion lines of RING are detected and processed, complete the functions such as ring detection, automatic-answering back device, automatic hand-up.Because signal transmssion line is ordinary telephone line, therefore, one key of this analog form is called out extension sets and is had convenient for installation and maintenance, support the advantage of long Distance Transmission, still, a key of this analog form is called out extension sets needs the auxiliary control of software, so not only increase design cost, also increase the links such as assembling and setting, intangibly increased cost of labor, reduced the convenience of I&M.
Utility model content
The purpose of this utility model is to provide an a kind of key to call out extension sets, this key is called out extension sets and is being realized on the basis of a key calling and automatic-answering back device, these functions of automatic hand-up, by hardware circuit design, realize length based on analog line apart from voice call.
To achieve these goals, the utility model has adopted following technical scheme:
An a kind of key is called out extension sets, it is characterized in that: it comprises casing, in this casing, be provided with extension set circuit, this extension set circuit comprises rectifier bridge, switching circuit, ring detection module, busy tone detection module, signal is differentiated and processing module, call module and button, wherein: the inboard signal end of this rectifier bridge is connected with the signal common port of this switching circuit, the first signal end of this switching circuit is differentiated and is connected with the bell signal input of processing module with this signal via this ring detection module, the secondary signal end of this switching circuit divides two-way, one tunnel is differentiated and is connected with the busy-back signal input of processing module with this signal via this busy tone detection module, another road is connected with the conversation signal end of this call module, the speech output of this call module is connected with the signal input part of loudspeaker via power amplifier module, the speech input of this call module is connected with the signal output part of miaow head, this signal differentiation is connected with the control signal output of processing module and the control signal input of this switching circuit, the interface end of this button and this signal are differentiated the push button signalling input relative set with processing module.
Described signal is differentiated and processing module comprises busy tone counting module, false busy tone filtering module, discrimination module and debounce module, wherein: described ring detection module is connected with the corresponding signal input of this discrimination module via pulse shaping module, described busy tone detection module is successively via this busy tone counting module, this vacation busy tone filtering module, logical process is connected with the corresponding signal input of this discrimination module with pulse shaping module, the signal output part of this debounce module is connected with the corresponding signal input of this discrimination module, the push button signalling receiving terminal relative set of the interface end of described button and this debounce module, the state switch-over control signal output of this discrimination module is connected with the control signal input of described switching circuit.
Described signal is differentiated and processing module comprises clock module, and the clock signal output terminal of this clock module is connected with the clock signal input terminal of pulse shaping module, described busy tone counting module with described pulse shaping module, described logical process respectively.
Described pulse shaping module comprises impulse generator, described busy tone counting module comprises counter, described false busy tone filtering module comprises filter, described logical process and pulse shaping module comprise impulse generator, trigger, described discrimination module comprises trigger, and described debounce module comprises revertive delay processor.
Described switching circuit comprises relay, one end ground connection of the coil of this relay, the control signal output of signal differentiation and processing module described in another termination of this coil, the moving contact of this relay connects the inboard signal end of described rectifier bridge, the normally closed fixed contact of this relay connects the signal input part of described ring detection module, this relay often open the signal input part that fixed contact connects described busy tone detection module, the conversation signal end of described call module.
Described ring detection module comprises bell signal detection chip.
Described busy tone detection module comprises busy tone frequency signal detection chip.
The utility model has the advantages that:
The utility model passes through hardware circuit design, realizing on the basis of a key calling and automatic-answering back device, these functions of automatic hand-up (busy tone detecting), realize length based on analog line apart from voice call, the advantage such as there is low cost of manufacture, cost of labor is low, installation and maintenance are convenient, stable and reliable for performance, voice quality is good.
Accompanying drawing explanation
Fig. 1 is composition schematic diagram of the present utility model.
Embodiment
As shown in Figure 1, the utility model one key is called out extension sets 100 and is comprised casing (not shown), in this casing, be provided with extension set circuit, this extension set circuit comprises rectifier bridge 110, switching circuit 120, ring detection module 130, busy tone detection module 140, signal is differentiated and processing module 190, call module 150 and button 198, wherein: the outboard signal end of this rectifier bridge 110 is connected with the corresponding signal end of local side apparatus 300 via telephone network 200, telephone network 200 comprises TIP and two signal transmssion lines of RING, and local side apparatus 300 is connected via telephone network and other key calling extension sets (not shown) again, as Fig. 1, the inboard signal end of this rectifier bridge 110 is connected with the signal common port of this switching circuit 120, the first signal end of this switching circuit 120 is differentiated and is connected with the bell signal input of processing module 190 with this signal via this ring detection module 130, the secondary signal end of this switching circuit 120 divides two-way, one tunnel is differentiated and is connected with the busy-back signal input of processing module 190 with this signal via this busy tone detection module 140, another road is connected with the conversation signal end of this call module 150, the speech output of this call module 150 is connected with the signal input part of loudspeaker 170 via power amplifier module 160, phonate hole relative set on these loudspeaker 170 and this casing, the speech input of this call module 150 is connected with the signal output part of miaow head 180, speech hole relative set on this miaow head 180 and this casing, this signal differentiation is connected with the control signal output of processing module 190 and the control signal input of this switching circuit 120, the interface end of this button 198 and this signal are differentiated the push button signalling input relative set with processing module 190, in practice, this button 198 stretches out this casing and is exposed to outside.
As Fig. 1, this signal is differentiated with processing module 190 can comprise busy tone counting module 193, false busy tone filtering module 194, discrimination module 191 and debounce module 196, wherein: ring detection module 130 is connected with the corresponding signal input of this discrimination module 191 via pulse shaping module 192, busy tone detection module 140 is successively via this busy tone counting module 193, this vacation busy tone filtering module 194, logical process is connected with the corresponding signal input of this discrimination module 191 with pulse shaping module 195, the signal output part of this debounce module 196 is connected with the corresponding signal input of this discrimination module 191, the push button signalling receiving terminal relative set of the interface end of button 198 and this debounce module 196, the state switch-over control signal output of this discrimination module 191 is connected with the control signal input of switching circuit 120.
As Fig. 1, this signal is differentiated and processing module 190 also comprises clock module 197, the clock signal output terminal of this clock module 197 is connected with the clock signal input terminal of pulse shaping module 195, busy tone counting module 193 with pulse shaping module 192, logical process respectively, clock module 197 forms the required clock signal of pulse for pulse shaping module 192, logical process and pulse shaping module 195 provide, and clock module 197 is the clock signal that busy tone counting module 193 is provided for counting.
In actual design, pulse shaping module 192, busy tone counting module 193, false busy tone filtering module 194, logical process and pulse shaping module 195, discrimination module 191, debounce module 196, clock module 197 can be made up of hardware such as 74 serial respective chip (as trigger, counter, revertive delay processor etc.), resistance, electric capacity, transistor and other electronic devices respectively.For example, pulse shaping module 192 comprises impulse generator, busy tone counting module 193 comprises counter, false busy tone filtering module 194 comprises filter, logical process and pulse shaping module 195 comprise impulse generator, trigger, discrimination module 191 comprises trigger, and debounce module 196 comprises revertive delay processor.
In the utility model, it is that the ring index signal that ring detection module 130 is sent is carried out respective handling and judges that signal is differentiated with the function of processing module 190, the busy tone index signal that busy tone detection module 140 is sent is carried out respective handling (comprising the filtration to false busy-back signal) and is judged, and the push button signalling that button 198 is sent receives, carry out respective handling and judge in conjunction with state now, produce respectively corresponding state switch-over control signal and come the switching action of control switch circuit 120 according to above judged result, thereby dislodging machine of the present utility model is controlled.
In actual design, switching circuit 120 comprises relay, one end ground connection of the coil of this relay, another termination signal of this coil is differentiated the control signal output with processing module 190, the moving contact of this relay connects the inboard signal end of rectifier bridge 110, the normally closed fixed contact of this relay connects the signal input part of ring detection module 130, this relay often open the signal input part that fixed contact connects busy tone detection module 140, the conversation signal end of call module 150.In actual design, switching circuit 120 also can be made up of other electronic switching device, is not limited to above-mentioned relay.The function of switching circuit 120 is to differentiate according to signal the state switch-over control signal sending with processing module 190 to complete switching action, to realize off-hook of the present utility model, on-hook.
In actual design, ring detection module 130 comprises bell signal detection chip.Specifically, this ring detection module 130 can be made up of bell signal detection chip resistance peripheral with it, electric capacity, transistor and other electronic device, whether the function of this ring detection module 130 is on detection signal transmission line, to have bell signal to exist, if bell signal detected, this ring detection module 130 is sent ring index signal into signal and is differentiated with processing module 190 and carry out respective handling and judgement, as the foundation of off-hook call.
In actual design, busy tone detection module 140 comprises busy tone frequency signal detection chip.Specifically, this busy tone detection module 140 can be made up of busy tone frequency signal detection chip resistance peripheral with it, electric capacity, transistor and other electronic device, whether the function of this busy tone detection module 140 is on detection signal transmission line, to have the frequency content of busy tone to exist, if the frequency content of busy tone detected, busy-back signal detected, this busy tone detection module 140 by busy tone index signal send into signal differentiate with processing module 190 carry out respective handling and judgement, as the foundation of on-hook.
In actual design, call module 150 is made up of resistance, electric capacity, triode, and power amplifier module 160 can comprise power amplifier, and rectifier bridge 110 is for example elected diode-type rectifier bridge as.
In the utility model, clock module 197, call module 150, power amplifier module 160, loudspeaker 170, miaow head 180, rectifier bridge 110, switching circuit 120 and telephone network 200, local side apparatus 300 are known circuits, device or the equipment of this area, therefore its concrete formation does not here describe in detail.The equipment that provides the local side of network insertion to provide is generally provided local side apparatus 300, comprises main frame, server, core switch, and such as the communication equipment in the machine room of the operator such as Netcom, telecommunications all belongs to local side apparatus.
In the utility model, ring detection module 130, busy tone detection module 140, pulse shaping module 192, busy tone counting module 193, false busy tone filtering module 194, logical process and pulse shaping module 195, discrimination module 191, debounce module 196 etc. are those skilled in the art's the technology of knowing, and here describe in detail therefore its particular hardware does not form.
The course of work of the present utility model and principle are:
Default conditions of the present utility model are hook state.
In the time that the utility model is done caller, wait button 198 is pressed.In the time that button 198 is pressed, button 198 transmits push button signalling to debounce module 196, this push button signalling is sent into discrimination module 191 after debounce module 196 is carried out debounce processing, push button signalling combination after the discrimination module 191 basis debounces of sending here now hook state of living in judges, transmit the state switch-over control signal of high level to switching circuit 120, so, switching circuit 120 moves, be switched to off hook state, call module 150 and busy tone detection module 140 are now connected via rectifier bridge 110 and TIP, RING signal transmssion line.Now, local side apparatus 300 detects that the utility model is off hook state, so will be that the pre-set hot line number of the utility model is called out extension sets (called end can be individuality or group) dial-out from the corresponding key of trend.When called end detects the bell signal that local side apparatus 300 is exported and is switched to after off hook state, the utility model just can be set up call with called end, completes and the call of called end by call module 150 based on miaow head 180 and loudspeaker 170.
When the utility model is done when called, now the utility model is the hook state of acquiescence, and ring detection module 130 is connected with TIP, RING signal transmssion line, waits for bell signal.In the time that calling terminal is called out the utility model via local side apparatus 300, carry bell signal by local side apparatus 300 to the utility model, so, ring detection module 130 detects bell signal, transmit ring index signal to pulse shaping module 192, pulse shaping module 192 converts the ring index signal sending to corresponding pulses signal backward discrimination module 191 and carries, then discrimination module 191 judges the pulse signal of sending into, transmit the state switch-over control signal of high level to switching circuit 120, switching circuit 120 moves, be switched to off hook state, call module 150 and busy tone detection module 140 are now via rectifier bridge 110 and TIP, RING signal transmssion line is connected, the utility model and calling terminal are set up call, complete and the call of calling terminal by call module 150 based on miaow head 180 and loudspeaker 170.
No matter the utility model is done caller or called, and its hooks on process is identical.Hooks on process of the present utility model is:
On-hook of the present utility model is divided into following two kinds of situations:
The first situation: in the time of the first on-hook in opposite end (calling out extension sets with other key of the utility model call), local side apparatus 300 detects after the on-hook of opposite end by signal transmssion line, can send busy-back signal to the utility model, so, busy tone detection module 140 of the present utility model can detect the frequency content of busy tone, this busy-back signal detected, just carry busy tone index signal to busy tone counting module 193, by busy tone counting module 193, the frequency content in busy tone is counted, then false busy-back signal is filtered according to counting situation via false busy tone filtering module 194, then send into logical process and pulse shaping module 195, carry out corresponding logical process (as feedback check and busy-back signal width by logical process and pulse shaping module 195 to filtering out the busy-back signal of false busy-back signal, the adjustment of time delay) and convert corresponding pulse signal to, then send to discrimination module 191, discrimination module 191 judges according to the signal of sending here, transmit low level state switch-over control signal to switching circuit 120, so, switching circuit 120 moves, be switched to hook state, finish call, ring detection module 130 and TIP, RING signal transmssion line is connected, complete passive on-hook, wait-for-response is conversed next time.
The second situation: in the time that the utility model is thought first on-hook, only need push button 198, detailed process is: in the time that button 198 is pressed, it transmits push button signalling to debounce module 196, this push button signalling is sent into discrimination module 191 after debounce module 196 is carried out debounce processing, push button signalling combination after the discrimination module 191 basis debounces of sending here now off hook state of living in judges, transmit low level state switch-over control signal to switching circuit 120, so, switching circuit 120 moves, be switched to hook state, finish call, ring detection module 130 and TIP, RING signal transmssion line is connected, complete initiatively on-hook, wait-for-response is conversed next time.
It should be noted that in fact busy tone is exactly the sine wave signal of certain frequency, it is present in the frequency range of mankind's normal voice.In call, in normal voice signal, there is false busy-back signal, if false busy-back signal is not filtered, just can cause " mistake on-hook " in normal talking process.Thereby, in the utility model, after call is set up, because busy tone detection module 140 is strobed together with call module 150, therefore, the utility model has been realized filtering by coordinating between busy tone counting module 193, false busy tone filtering module 194, logical process and pulse shaping module 15 to false busy-back signal, to detect real busy-back signal, avoids the appearance of mistake on-hook phenomenon.
The utility model has the advantages that:
The utility model has been realized the functions such as a key calling, automatic-answering back device, automatic hand-up (busy tone detecting), voice call, each module is used integrated circuit (IC) chip and basic electronic device to realize, do not need the participation such as processor, logical device of programming, entirely realized by hardware chip, do not need the auxiliary control of software, design and manufacturing cost are reduced, the links such as assembling and setting are saved, greatly reduce cost of labor, promote the convenience of I&M, and function and stable and reliable for performance, voice quality is good, is applicable to various occasions and uses.
The above is preferred embodiment of the present utility model and the know-why used thereof; for a person skilled in the art; in the situation that not deviating from spirit and scope of the present utility model; any apparent change such as equivalent transformation, simple replacement based on technical solutions of the utility model basis, within all belonging to the utility model protection range.
Claims (7)
1. a key is called out extension sets, it is characterized in that: it comprises casing, in this casing, be provided with extension set circuit, this extension set circuit comprises rectifier bridge, switching circuit, ring detection module, busy tone detection module, signal is differentiated and processing module, call module and button, wherein: the inboard signal end of this rectifier bridge is connected with the signal common port of this switching circuit, the first signal end of this switching circuit is differentiated and is connected with the bell signal input of processing module with this signal via this ring detection module, the secondary signal end of this switching circuit divides two-way, one tunnel is differentiated and is connected with the busy-back signal input of processing module with this signal via this busy tone detection module, another road is connected with the conversation signal end of this call module, the speech output of this call module is connected with the signal input part of loudspeaker via power amplifier module, the speech input of this call module is connected with the signal output part of miaow head, this signal differentiation is connected with the control signal output of processing module and the control signal input of this switching circuit, the interface end of this button and this signal are differentiated the push button signalling input relative set with processing module.
2. a key as claimed in claim 1 is called out extension sets, it is characterized in that:
Described signal is differentiated and processing module comprises busy tone counting module, false busy tone filtering module, discrimination module and debounce module, wherein: described ring detection module is connected with the corresponding signal input of this discrimination module via pulse shaping module, described busy tone detection module is successively via this busy tone counting module, this vacation busy tone filtering module, logical process is connected with the corresponding signal input of this discrimination module with pulse shaping module, the signal output part of this debounce module is connected with the corresponding signal input of this discrimination module, the push button signalling receiving terminal relative set of the interface end of described button and this debounce module, the state switch-over control signal output of this discrimination module is connected with the control signal input of described switching circuit.
3. a key as claimed in claim 2 is called out extension sets, it is characterized in that:
Described signal is differentiated and processing module comprises clock module, and the clock signal output terminal of this clock module is connected with the clock signal input terminal of pulse shaping module, described busy tone counting module with described pulse shaping module, described logical process respectively.
4. a key as claimed in claim 2 is called out extension sets, it is characterized in that:
Described pulse shaping module comprises impulse generator, described busy tone counting module comprises counter, described false busy tone filtering module comprises filter, described logical process and pulse shaping module comprise impulse generator, trigger, described discrimination module comprises trigger, and described debounce module comprises revertive delay processor.
5. the key as described in any one in claim 1 to 4 is called out extension sets, it is characterized in that:
Described switching circuit comprises relay, one end ground connection of the coil of this relay, the control signal output of signal differentiation and processing module described in another termination of this coil, the moving contact of this relay connects the inboard signal end of described rectifier bridge, the normally closed fixed contact of this relay connects the signal input part of described ring detection module, this relay often open the signal input part that fixed contact connects described busy tone detection module, the conversation signal end of described call module.
6. the key as described in any one in claim 1 to 4 is called out extension sets, it is characterized in that:
Described ring detection module comprises bell signal detection chip.
7. the key as described in any one in claim 1 to 4 is called out extension sets, it is characterized in that:
Described busy tone detection module comprises busy tone frequency signal detection chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320766590.XU CN203708294U (en) | 2013-11-28 | 2013-11-28 | One-button call extension device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320766590.XU CN203708294U (en) | 2013-11-28 | 2013-11-28 | One-button call extension device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203708294U true CN203708294U (en) | 2014-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320766590.XU Expired - Lifetime CN203708294U (en) | 2013-11-28 | 2013-11-28 | One-button call extension device |
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| Country | Link |
|---|---|
| CN (1) | CN203708294U (en) |
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2013
- 2013-11-28 CN CN201320766590.XU patent/CN203708294U/en not_active Expired - Lifetime
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140709 |
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| CX01 | Expiry of patent term |