CN201467239U - Two-lane access telephone - Google Patents

Two-lane access telephone Download PDF

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Publication number
CN201467239U
CN201467239U CN2009200615496U CN200920061549U CN201467239U CN 201467239 U CN201467239 U CN 201467239U CN 2009200615496 U CN2009200615496 U CN 2009200615496U CN 200920061549 U CN200920061549 U CN 200920061549U CN 201467239 U CN201467239 U CN 201467239U
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China
Prior art keywords
module
voice
pstn
frequency
processing unit
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Expired - Fee Related
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CN2009200615496U
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Chinese (zh)
Inventor
王声平
祖兆新
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DESAI ELECTRONIC (HUIZHOU) Ltd
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DESAI ELECTRONIC (HUIZHOU) Ltd
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Priority to CN2009200615496U priority Critical patent/CN201467239U/en
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Publication of CN201467239U publication Critical patent/CN201467239U/en
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Abstract

The utility model discloses a two-lane access telephone, which includes a user identification module, an LCD module, a keyboard module, a power supply module, a voice frequency control module, a voice frequency path switching module, a voice module, a PSTN circuit module, a CPU (central processing unit), and a radio frequency module. The CPU is connected with the user identification module and the radio frequency module; the radio frequency module is connected with the LCD module; the CPU and the radio frequency module are connected with the voice frequency control module, the keyboard module, the PSTN circuit module and the voice frequency path switching module at the same time; the voice frequency path switching module is connected with the voice frequency control module; the voice module is connected with the PSTN circuit module, the voice frequency control module and the radio frequency module; and the CPU, the radio frequency module, the LCD module and the PSTN circuit module are respectively connected with the power supply module. The utility model integrates GSM communication technology and PSTN communication technology, and can realize fixed phone functions and GSM mobile phone functions at the same time.

Description

A kind of two-wire inserts telephone set
Technical field
The utility model relates to the communications field, relates in particular to a kind of two-wire of fixed line function, gsm mobile telephone function of realizing and inserts telephone set.
Background technology
Along with the development of Communication in China cause, telephone set is just progressively come into huge numbers of families, become people live in the middle of the closest telecommunication terminal product, almost each family has a telephone set at least.The more and more abundanter trend that has become the telephone set development of function, and the practicality of function is the emphasis that common people pay close attention to all the time.The appearance of cordless telephone has broken through the spatial limitation of conventional telephone set, on market development very fast, cordless telephone has incorporated the function of some ordinary telephone sets, as sound-recording function, caller identification information Presentation Function etc.In addition, cordless telephone has also been introduced some functions of cell phone, indicates, transfers automatically, presets dialing, singly-bound reception etc. as electric weight and signal power.Although people on the basis of conventional telephone set, carry out various transformations, all do not have can be real and mobile communication technology combine.
Though along with development of internet technology, telecommunication terminal also develops to aspects such as digitlization, intellectuality, multimedias, but be limited by level of mass consumption and installation environment, in from now on suitable length in one period,, dependable performance simple with function, cheap be that the popular telephone set of main feature is still the telephone set market mainstream.Current, insert telephone set and occurred and apply to market based on the two-wire of the PSTN communication technology based on the double-card dual-standby hand-held communication terminal of gsm communication technology, but its communication is all based on a kind of communication technology, in case this communication technology breaks down, to can't realize communication fully, simultaneously, do not have significant difference, be unfavorable for that consumption selects based on the communication rate of same communication network.The utility model for looking after the different consumption demand of consumer, provides a kind of novel communication mode just, guarantees under the situation that any therein communication line breaks down, still can be normally and extraneous communication.Simultaneously, owing to there are two networks of wire and wireless, the client can select comparatively cheap rate mode to dial conversation, for the client has saved a large amount of telephone expenses.
The utility model content
The utility model has overcome the shortcoming and defect of above-mentioned prior art, provides a kind of and merged the gsm communication technology and the PSTN communication technology, can realize simultaneously that the two-wire of fixed line function, gsm mobile telephone function inserts telephone set.
The purpose of this utility model is achieved through the following technical solutions: a kind of two-wire inserts telephone set, comprising:
Be used to show the LCD display module of incoming information, information and display graphics user interface;
The Keysheet module that is used for input instruction, user profile;
Be used to provide the power module of power supply;
The voice module that is used for the input and output of audio frequency;
Be used to write down speech data, according to the state of the control command control voice module of central processing unit, realize the audio frequency control module of the power amplifier output of voice module;
Be used to realize basic fixed line function, comprise the PSTN circuit module of ring control, answer mode control, FSK encoding and decoding, DTMF transmission and decoding, call voice control;
Be used to store the user identification module (SIM card) of user's identity information;
The command information judgement incoming telephone signal, the user's mode of answering that are used for sending according to radio-frequency module are carried out landline telephone and are moved the switching of discussing between words, by realize to the radio-frequency module transmitting control commands between PSTN keypad function and the GSM keypad function conversion and to the control of LCD display module, voice module, by realizing PSTN network and the internetwork switching of GSM to voice-frequency channel handover module transmitting control commands, the central processing unit that the state by realizing the control voice module to audio frequency control module transmitting control commands, the power amplifier of voice module are exported;
Be used to receive the GSM incoming telephone signal, and send the command information that electrical information classification, user are answered mode, Keysheet module, LCD display module, voice module are carried out the radio-frequency module of corresponding operating according to the control command of central processing unit to central processing unit;
Be used for realizing the voice-frequency channel handover module that switches between PSTN network and GSM network according to the control command of central processing unit;
Described central processing unit links to each other with user identification module, radio-frequency module, described radio-frequency module links to each other with the LCD module, described central processing unit links to each other with audio frequency control module, Keysheet module, PSTN circuit module, voice-frequency channel handover module with radio-frequency module simultaneously, described voice-frequency channel handover module links to each other with the audio frequency control module, described voice module links to each other with PSTN circuit module, audio frequency control module, radio-frequency module, and described central processing unit, radio-frequency module, LCD display module, PSTN circuit module link to each other with power module respectively.
For better realizing the utility model, caller ID processing module and the dialing processing module of PSTN that described central processing unit is integrated.
Described PSTN circuit module comprises:
Be used to realize that central processing unit detects the ring detecting circuit of relevant ringing pulse;
Be used to receive the DTMF information that central processing unit sends and send to DTMF transmission interface circuit on the telephone wire;
Be used to the handle circuit for answering of realizing that handle is answered or called;
Be used to realize the simulation circuit for answering answering or call when hands-free;
Be used to realize the FSK encoding and decoding interface circuit of the Code And Decode of FSK;
Be used to realize the DTMF decoding interface circuit of DTMF decoding;
Described ring detecting circuit, DTMF transmission interface circuit, handle circuit for answering, simulation circuit for answering, FSK encoding and decoding interface circuit, DTMF decoding interface circuit link to each other with central control unit respectively.
Described radio-frequency module is the GSM radio-frequency module that built-in communication antenna is supported double frequency 900/1800MHz.
Described voice-frequency channel handover module is the bidirectional switch controller, and described bidirectional switch controller can adopt SGM3005 single-pole double throw analog signal switch.
Described a kind of two-wire inserts telephone set and also comprises charged lithium cells, described charged lithium cells is built in the telephone set, described charged lithium cells charging modes can be constant voltage after the first constant current, adopts 3.6 kilo-ohms resistance to set 500 milliamperes charging current, and the constant voltage charge value is 4.2V.
Described a kind of two-wire inserts telephone set and also comprises ESD device and the esd protection circuit that is used to protect external tapping, protection Key Circuit.
The utility model compared with prior art, the gsm mobile telephone function of wired fixed line function of tradition and current trend is combined, switch and the keypad function conversion by incoming telephone signal differentiation, voice-frequency channel, solved the conflict between PSTN incoming call and GSM incoming call, the two-wire unification can realize that fixed line function, GSM merchant talk about function, can satisfy different selection under the susceptible scape pattern of client, the client can select comparatively cheap rate mode to dial conversation, for the client has saved a large amount of telephone expenses; Simultaneously, owing to there are two networks of wire and wireless, even under the situation that any communication line breaks down, still can be normally and extraneous communication.
Description of drawings
Fig. 1 main circuit block diagram of the present utility model;
The block diagram of Fig. 2 the utility model PSTN circuit module and central processing unit;
Network between Fig. 3 the utility model PSTN and GSM switches and keypad function transfer principle block diagram.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.
As shown in Figure 1, a kind of two-wire inserts telephone set, comprising:
Be used to show the LCD display module of incoming information, information and display graphics user interface;
The Keysheet module that is used for input instruction, user profile;
Be used to provide the power module of power supply;
The voice module that is used for the input and output of audio frequency;
Be used to write down speech data, according to the state of the control command control voice module of central processing unit, realize the audio frequency control module of the power amplifier output of voice module;
Be used to realize basic fixed line function, comprise the PSTN circuit module of ring control, answer mode control, FSK encoding and decoding, DTMF transmission and decoding, call voice control;
Be used to store the user identification module of user's identity information;
The command information judgement incoming telephone signal, the user's mode of answering that are used for sending according to radio-frequency module are carried out landline telephone and are moved the switching of discussing between words, by realize to the radio-frequency module transmitting control commands between PSTN keypad function and the GSM keypad function conversion and to the control of LCD display module, voice module, by realizing PSTN network and the internetwork switching of GSM to voice-frequency channel handover module transmitting control commands, the central processing unit that the state by realizing the control voice module to audio frequency control module transmitting control commands, the power amplifier of voice module are exported;
Be used to receive the GSM incoming telephone signal, and send the command information that electrical information classification, user are answered mode, Keysheet module, LCD display module, voice module are carried out the radio-frequency module of corresponding operating according to the control command of central processing unit to central processing unit;
Be used for realizing the voice-frequency channel handover module that switches between PSTN network and GSM network according to the control command of central processing unit;
Described central processing unit links to each other with user identification module, radio-frequency module, described radio-frequency module links to each other with the LCD module, described central processing unit links to each other with audio frequency control module, Keysheet module, PSTN circuit module, voice-frequency channel handover module with radio-frequency module simultaneously, described voice-frequency channel handover module links to each other with the audio frequency control module, described voice module links to each other with PSTN circuit module, audio frequency control module, radio-frequency module, and described central processing unit, radio-frequency module, LCD display module, PSTN circuit module link to each other with power module respectively.
Caller ID processing module and the dialing processing module of PSTN that described central processing unit is integrated.
Described PSTN circuit module comprises:
Be used to realize that central processing unit detects the ring detecting circuit of relevant ringing pulse;
Be used to receive the DTMF information that central processing unit sends and send to DTMF transmission interface circuit on the telephone wire;
Be used to the handle circuit for answering of realizing that handle is answered or called;
Be used to realize the simulation circuit for answering answering or call when hands-free;
Be used to realize the FSK encoding and decoding interface circuit of the Code And Decode of FSK;
Be used to realize the DTMF decoding interface circuit of DTMF decoding;
As shown in Figure 2, described ring detecting circuit, DTMF transmission interface circuit, handle circuit for answering, simulation circuit for answering, FSK encoding and decoding interface circuit, DTMF decoding interface circuit link to each other with central control unit respectively.
Described radio-frequency module is the GSM radio-frequency module that built-in communication antenna is supported double frequency 900/1800MHz.
Described voice-frequency channel handover module is the bidirectional switch controller, and present embodiment adopts SGM3005 single-pole double throw analog signal switch.
Described a kind of two-wire inserts telephone set and also comprises ESD device and the esd protection circuit that is used to protect external tapping, protection Key Circuit.
The external DC4.6V/1A power supply of the utility model, radio-frequency module adopt GSM GPRS double frequency module SIMCOM300W scheme, central processing unit adopts 78806 model single-chip microcomputers.
After powering on, ring is defaulted as the PSTN pattern, and voice-grade channel is defaulted as the GSM passage, and the default conditions of voice module are to disconnect with power amplifier output, and quiet realization is that current MIC passage is transformed into PSTN or GSM pattern.
During as caller, handle or press outgoing call by hands-free back and directly selected to breathe out or postpone after 5 seconds automatically the GSM net by " PSTN " key PSTN net to breathe out also can be by netting exhalation by the direct GSM of " transmission " key behind the intact outgoing call.
When called, receive the PSTN incoming information by wired fixed network, receive the GSM incoming information by radio-frequency module, central processing unit is by detecting the signal that radio-frequency module sends over, making incoming information and answer mode judges, and cooperate with radio-frequency module, realize answering and switching of different incoming telephone signals; Central processing unit links to each other with the PSTN circuit module, handles and the dialing processing module by the caller ID of built-in PSTN, realizes that caller ID shows; Central processing unit is by detecting the job information of radio-frequency module, realizes conversion between the different keypad functions by control radio-frequency module keyboard interface.
As shown in Figure 3, the switching of PSTN audio frequency and GSM audio frequency, adopt following scheme to realize:
1. when having only the PSTN incoming call, radio-frequency module sends handle answer mode or hands-free mode command information to central processing unit.Central processing unit judges according to the command information that receives, and sends control command and open or close corresponding voicefrequency circuit, realizes the PSTN conversation.
2. when having only the GSM incoming call, radio-frequency module sends ringing instruction to central processing unit earlier, and central processing unit sends instructions for SGM3005 single-pole double throw analog signal switch and opens the GSM ringing circuit, closes the PSTN ringing circuit; At this moment, the GSM ring rings, and then, central processing unit opens or closes corresponding audio frequency control module according to the information that radio-frequency module sends, and realizes the GSM conversation.
When 3. after PSTN sends a telegram here GSM earlier, sending a telegram here, the PSTN ring rings earlier, central processing unit cuts out voice module and is connected with power amplifier output, central processing unit waits for that the PSTN that answers that radio-frequency module sends still is GSM and hands-free still handle answer mode, enter corresponding modes, answering finishes restPoses (optionally connected tin of elder generation by PSTN key handle or by the hands-free pstn telephone that connects, otherwise answer GSM).
When 4. after GSM sends a telegram here PSTN earlier, sending a telegram here, the GSM incoming call, radio-frequency module says the word to central processing unit, central processing unit cuts out the PSTN ring, central processing unit is opened voice module and is connected with power amplifier output, the GSM ring rings, central processing unit detects the PSTN bell signal, number is issued radio-frequency module, central processing unit waits for that the PSTN that answers that radio-frequency module sends still is GSM and hands-free still handle answer mode, enter corresponding modes, answering finishes restPoses (optionally connected tin of elder generation by PSTN key handle or by the hands-free pstn telephone that connects, otherwise answer GSM).
5. when PSTN sends a telegram here in the GSM conversation, before the GSM conversation, central processing unit cuts out PSTN ring output, central processing unit detects the PSTN bell signal, and number is issued radio-frequency module, and central processing unit waits for that radio-frequency module sends, and to answer PSTN still be GSM and be hands-free or the handle answer mode, enter corresponding modes, answering finishes restPoses (put down handle earlier or the GSM phone by hands-free extension, again earlier by PSTN key handle or by the hands-free pstn telephone that connects, otherwise answer GSM).
6. when GSM sends a telegram here in the PSTN conversation, before the PSTN conversation, central processing unit cuts out PSTN ring output and GSM voice-grade channel, after radio-frequency module detects the GSM bell signal, notice central processing unit, central processing unit provide reply and wait for that radio-frequency module sends answer PSTN still be GSM and hands-free still be the handle answer mode, enter corresponding modes, answering finishes restPoses (put down handle earlier or pstn telephone by hands-free extension, first again button handle or by the hands-free GSM that connects).
7. as PSTN when earlier incoming call and PSTN shift to an earlier date on-hook behind the incoming call GSM, open the PSTN ring back tone earlier, after the PSTN on-hook, open the GSM ring back tone again, at this moment, be equivalent to occur situation 2..
8. as GSM when earlier incoming call and GSM shift to an earlier date on-hook behind the incoming call PSTN, open the GSM ring back tone earlier, after the GSM on-hook, open the PSTN ring back tone again, at this moment, be equivalent to occur situation 1..
Conversion between PSTN keyboard and the GSM keyboard, adopt following scheme to realize:
The function key of keyboard is directly received on the keyboard interface of radio-frequency module, the 3*4 numerical key by gate circuit 244 come control flows to, 244 power supplys are identical with central processing unit.Keyboard behind the power-up initializing is defaulted as the GSM keyboard mode, and the 3*4 keyboard is received the keyboard interface of radio-frequency module; When central processing unit detects radio-frequency module and does not work, central processing unit is realized the keyboard mode conversion by the level that changes the corresponding keyboard control port, promptly GSM keyboard mode control port RF_KEY_CON is put high level, PSTN Keyboard Control port PSTN_KEY_CON puts low level, and numerical key forwards the PSTN pattern to.
The present embodiment telephone set also comprises charged lithium cells, and described charged lithium cells is built in the telephone set.Described charged lithium cells charging modes is a constant voltage after the first constant current, and present embodiment adopts 3.6 kilo-ohms resistance to set 500 milliamperes charging current, and the constant voltage charge value is 4.2V.
By rechargeable battery powered, also do not have electricity as rechargeable battery when having electricity, central processing unit sends control information to handle, and handle is realized off-hook, and handle is answered wired incoming call or called by the PSTN network, and function key is invalid, and incoming call has ring back tone, but liquid crystal does not have demonstration.When using the PSTN net answering or calling, battery and civil power do not have still can continue under the situation to answer, but liquid crystal does not have demonstration.
The foregoing description is the utility model preferred implementation; but execution mode of the present utility model is not limited by the examples; other any do not deviate from change, the modification done under spirit of the present utility model and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within the protection range of the present utility model.

Claims (9)

1. a two-wire inserts telephone set, comprising:
Be used to show the LCD display module of incoming information, information and display graphics user interface;
The Keysheet module that is used for input instruction, user profile;
Be used to provide the power module of power supply;
The voice module that is used for the input and output of audio frequency;
Be used to write down speech data, according to the state of the control command control voice module of central processing unit, realize the audio frequency control module of the power amplifier output of voice module;
Be used to realize basic fixed line function, comprise the PSTN circuit module of ring control, answer mode control, FSK encoding and decoding, DTMF transmission and decoding, call voice control;
It is characterized in that, also comprise:
Be used to store the user identification module of user's identity information;
The command information judgement incoming telephone signal, the user's mode of answering that are used for sending according to radio-frequency module are carried out landline telephone and are moved the switching of discussing between words, by realize to the radio-frequency module transmitting control commands between PSTN keypad function and the GSM keypad function conversion and to the control of LCD display module, voice module, by realizing PSTN network and the internetwork switching of GSM to voice-frequency channel handover module transmitting control commands, the central processing unit that the state by realizing the control voice module to audio frequency control module transmitting control commands, the power amplifier of voice module are exported;
Be used to receive the GSM incoming telephone signal, and send the command information that electrical information classification, user are answered mode, Keysheet module, LCD display module, voice module are carried out the radio-frequency module of corresponding operating according to the control command of central processing unit to central processing unit;
Be used for realizing the voice-frequency channel handover module that switches between PSTN network and GSM network according to the control command of central processing unit;
Described central processing unit links to each other with user identification module, radio-frequency module, described radio-frequency module links to each other with the LCD module, described central processing unit links to each other with audio frequency control module, Keysheet module, PSTN circuit module, voice-frequency channel handover module with radio-frequency module simultaneously, described voice-frequency channel handover module links to each other with the audio frequency control module, described voice module links to each other with PSTN circuit module, audio frequency control module, radio-frequency module, and described central processing unit, radio-frequency module, LCD display module, PSTN circuit module link to each other with power module respectively.
2. a kind of two-wire according to claim 1 inserts telephone set, it is characterized in that, caller ID processing module and the dialing processing module of PSTN that described central processing unit is integrated.
3. a kind of two-wire according to claim 1 inserts telephone set, it is characterized in that described PSTN circuit module comprises:
Be used to realize that central processing unit detects the ring detecting circuit of relevant ringing pulse;
Be used to receive the DTMF information that central processing unit sends and send to DTMF transmission interface circuit on the telephone wire;
Be used to the handle circuit for answering of realizing that handle is answered or called;
Be used to realize the simulation circuit for answering answering or call when hands-free;
Be used to realize the FSK encoding and decoding interface circuit of the Code And Decode of FSK;
Be used to realize the DTMF decoding interface circuit of DTMF decoding;
Described ring detecting circuit, DTMF transmission interface circuit, handle circuit for answering, simulation circuit for answering, FSK encoding and decoding interface circuit, DTMF decoding interface circuit link to each other with central control unit respectively.
4. a kind of two-wire according to claim 1 inserts telephone set, it is characterized in that, described radio-frequency module is the GSM radio-frequency module that built-in communication antenna is supported double frequency 900/1800MHz.
5. a kind of two-wire according to claim 1 inserts telephone set, it is characterized in that described voice-frequency channel handover module is the bidirectional switch controller.
6. a kind of two-wire according to claim 5 inserts telephone set, it is characterized in that, described bidirectional switch controller adopts SGM3005 single-pole double throw analog signal switch.
7. a kind of two-wire according to claim 1 inserts telephone set, it is characterized in that, described a kind of two-wire inserts telephone set and also comprises charged lithium cells, and described charged lithium cells is built in the telephone set.
8. a kind of two-wire according to claim 7 inserts telephone set, it is characterized in that described charged lithium cells charging modes is a constant voltage after the first constant current, adopts 3.6 kilo-ohms resistance to set 500 milliamperes charging current, and the constant voltage charge value is 4.2V.
9. a kind of two-wire according to claim 1 inserts telephone set, it is characterized in that, described a kind of two-wire inserts telephone set and also comprises ESD device and the esd protection circuit that is used to protect external tapping, protection Key Circuit.
CN2009200615496U 2009-07-31 2009-07-31 Two-lane access telephone Expired - Fee Related CN201467239U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104754673A (en) * 2015-03-24 2015-07-01 惠州市新思为电子科技有限公司 Method and device for dual-mode communication of GSM (global system for mobile communication) and PSTN (public switched telephone network)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104754673A (en) * 2015-03-24 2015-07-01 惠州市新思为电子科技有限公司 Method and device for dual-mode communication of GSM (global system for mobile communication) and PSTN (public switched telephone network)

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Granted publication date: 20100512

Termination date: 20130731