CN2251842Y

CN2251842Y - Multifunctional telegraphone

Info

Publication number: CN2251842Y
Application number: CN 95203675
Authority: CN
Inventors: 马杰
Original assignee: Xingchen Enterprise Development Corp Guangzhou Tianhe High And New Technology
Current assignee: Xingchen Enterprise Development Corp Guangzhou Tianhe High And New Technology
Priority date: 1995-02-27
Filing date: 1995-02-27
Publication date: 1997-04-09
Anticipated expiration: 2005-02-27

Abstract

The utility model relates to the telephone technology, particularly a telegraphone with recording function, and the utility model solves the defect that the function of the existing telephone is single. On the foundation of the existing telephone, the utility model adopts center controlling circuits to go on with omnidirectional controlling for the entire telephone. An arranging function key is additionally provided. Arranging function key circuits, busy tone detection circuits, a memory device, a voice monolithic processor with DTMF detection, external interface circuits, detection circuits for the theft protection and anti-eavesdrop detection circuits are arranged on a circuit board. The utility model has the advantages that the utility model goes on with the operation of the recording and reproducing voice indoors and outdoors, and the password of the operation key can be optionally changed. The utility model can be connected with fire resistance devices, anti-theft alarms and domestic appliances, etc. the utility model has also the functions of the telephone line of preventing eavesdropping and embezzlement. Simultaneously the utility model can also expand the other functions according to the requirement easily.

Description

Multi-functional dtelegraphone

The utility model relates to the telephone set technology, particularly relates to a kind of dtelegraphone with sound-recording function.

The telegraphone of prior art mainly adds that by ordinary telephone set audio tape constitutes, and being characterized in must be by the magnetic recording speech signal.

That Chinese patent CN90204517.2 discloses is a kind of " phone is recorded automatically, message leaving device ", and this device is to utilize the phone interface arrangement of recording automatically, leave a message, and ordinary telephone set and recorder in the grafting are finished the function of telegraphone.Because of magnetic recording needs by means of mechanical device, thereby there was a mechanical failure easily, the repair rate height, and the life-span is short, can not carry out function infiltration more closely with telephone set and synthesize.And need frequent rewinding when using, consuming time, troublesome poeration.

Chinese patent CN92205367.7 discloses a kind of " phone automatic answering device ", this device comprises bell flowing detecting circuit, sequential control circuit, language processor and DRAM memory, utilizes sequential control circuit, language processor and DRAM memory to finish and replys sound-recording function.Because of its used sequence circuit, the setting of sequential is certain, can not arbitrarily change after this device is made, and used speech processor does not have the DTMF decoding function, so realize that control is inaccurate, consistency is poor, it is poor to produce quality stability in batches, and can not expand other function.Because of no DTMF decoding circuit, so can not realize the function of strange land remote control.

The purpose of this utility model is to avoid above-mentioned weak point of the prior art, provide a kind of memory that utilizes to carry out the recording playback sound, both can operate at the indoor recording playback sound that carries out, can operate at the outdoor recording playback sound that carries out again, and the key passwords of operation number can arbitrarily be changed, and has fire alarm, the interface of burglar alarm and household electrical appliance etc., in case the generation condition of a fire, dangerous situation, can send alarm signal by telephone wire at once, simultaneously can indoorly carry out the switch remote control and indoor sound is monitored by squeezing into again, also have the multi-functional dtelegraphone that prevents to eavesdrop and usurp this telephone wires signals from outdoor phone to household electrical appliance.

The purpose of this utility model can reach by following measure:

The multi-functional dtelegraphone of the utility model comprises base, be placed on the mobile phone on the base, be arranged on display and dial key that base ends, be installed in the circuit board in the base, on described circuit board, include bell flowing detecting circuit, dial-up circuit, switching circuit, liquid crystal display drive circuit, mobile phone amplifying circuit, base amplifying circuit, present technique key are to be provided with on described base function key are set;

On described circuit board, also include the function key circuit is set, the busy tone testing circuit, memory has the voice monolithic processor that DTMF detects, central control circuit;

Described memory links to each other with the voice monolithic processor that has the DTMF detection, the control end that has the voice monolithic processor of DTMF detection links to each other with the data/address bus of central control circuit, the output that has the voice monolithic processor of DTMF detection is connected on the switch J by switching circuit, and the other end of switch J links to each other with telephone line;

The described output that function key circuit, dial-up circuit and bell flowing detecting circuit are set all is connected on the central control circuit, and the input of bell flowing detecting circuit is connected on the telephone line, and the input of dial-up circuit is connected between switching circuit and the switch J;

The output of described base amplifying circuit is connected to the input of the voice monolithic processor that has the DTMF detection, link to each other with switching circuit again, loudspeaker on the base all link to each other with input with the output of base amplifying circuit by switching circuit with microphone, and switching circuit is controlled by central control circuit.

Described busy tone testing circuit, its input is connected between switching circuit and the switch J, output is connected on the chip microprocessor, after on-hook, the busy tone testing circuit will be talked about on the line detected busy-back signal and export to central control circuit, and control has the voice monolithic processor that DTMF detects and stops recording.

According to top described, the present technique key is also to include the external tapping circuit on described circuit board, and the external tapping circuit is connected on the central control circuit, by the switch on and off in the central control circuit control external tapping circuit.

According to top described, the present technique key is to be provided with electronic switch V10, V11, V12 between the contact under the storage button in described dial-up circuit, and control end M1SW, M2SW, the M3SW of electronic switch V10, V11, V12 link to each other with chip microprocessor.

According to top described, the present technique key is also to include on described circuit board prevents usurping testing circuit, and its input is connected on the telephone line L1, and output links to each other with central control circuit.

According to top described, the present technique key is also to include the anti-eavesdrop testing circuit on described circuit board, and its input is connected between switching circuit and the switch J, and output is connected on the central control circuit.

According to top described, the present technique key is also to include its input of anti-eavesdrop testing circuit and is connected on switching circuit on described circuit board, and between the switch J, output is connected on the central control circuit.

According to top described, the present technique key is at described switching circuit by electronic analog swtich IC19:A, IC19:B, IC19:C and IC19:D constitute, at the output of described base amplifying circuit with have between the output of the voice monolithic processor that DTMF detects and the loudspeaker and be respectively equipped with electronic analog swtich IC19:A and IC19:D, between the input of the output that has the voice monolithic processor that DTMF detects and microphone and base amplifying circuit, be respectively equipped with electronic analog swtich IC19:C and IC19:B, electronic analog swtich IC19:A, IC19:B, the control end of IC19:C and IC19:D links to each other with central control circuit, and wherein the control end of electronic analog swtich IC19:A and IC19:B also links to each other with interior lines L2.

According to top described, the present technique key is that at described switch J be the relay that has single-pole double throw, and its movable contact spring links to each other with interior lines L2, and fixed touching plate one end J-2 is connected on the telephone wire L1, other end J-1 is connected on the DC power supply Vcc, and the coil of relay is connected on the central control circuit.

According to top described, the present technique key is to be made of IC1, IC2, IC3, IC7 and IC8 integrated package at described central control circuit.

According to top described, the present technique key is that the voice monolithic processor that detects at the described DTMF of having is the UPD77501 integrated package

The multi-functional dtelegraphone of the utility model has a following advantage than existing: 1. owing to adopted central control circuit that whole telephone set is controlled in technique scheme, and adopting the voice monolithic processor that DTMF detects of having of high integration, to carry out digital speech synthetic, not only can carry out recording playback operation indoor, but also can carry out recording playback operation outdoor, processing ease, the reliability height.2. employing highly integrated chip, it is low to produce failure rate in batches, and volume is little, and cost is low.3. can carry out remote control to indoor outdoor, and have fire prevention, anti-theft alarm function, also can expand other controlled function easily; Make whole telephone set especially as the computer controller that can make multifunctional usage, have the high degree of intelligence characteristic.

The drawing of accompanying drawing is described as follows:

Fig. 1 is the circuit block diagram of the multi-functional dtelegraphone of the utility model.

Fig. 2 is the structural representation of the multi-functional dtelegraphone keyboard of the utility model face.

Fig. 3 is the circuit theory diagrams of (6) among Fig. 1, (7) and (9).

Fig. 4 is the circuit theory diagrams of (10) and (11) among Fig. 1.

Fig. 5 is the circuit theory diagrams of (17) among Fig. 1, (13) and (21).

Fig. 6 is the circuit theory diagrams of (14) among Fig. 1, (15), (16) and (23).

Fig. 7 is the circuit theory diagrams of (8) among Fig. 1, (19) and (20).

Below in conjunction with drawings and Examples the multi-functional dtelegraphone of the utility model is described in further detail:

IC1 is 8031 single-chip microcomputers among Fig. 3-7, IC2 is the 74LS373 address buffer, IC3 is 27128 EPROM, IC4 is that UPD77501 has the voice monolithic processor that DTMF detects, IC5 is 44400 DRAM-dynamic memories, IC6 is 555 o'clock base integrated packages, and IC7 is the 74LS245 data buffer, and IC8 is the 74LS373 data buffer, IC91-94 is the 4N25 optical coupler, IC10 is the 74LS02 NOR gate, and IC11 is the LM324 four-operational amplifier, and IC12 is the LM567 phase-locked loop, IC13 is 7805 three terminal regulators, IC14 is a 74LS147 BCD binary translator, and IC15 is U91550AF dialing and liquid crystal driver, and IC16 is a TEA1062 mobile phone amplification driver, IC17 is a MC34010P base amplification driver, IC182 receives integrated package for the LS1240 ring, and IC19 is 4066 electronic analog swtichs, and IC20 is the LM386 power discharging integrated block.

Central control circuit is made of IC1, IC2, IC3, IC7 integrated package and IC8 integrated package.

The voice monolithic processor that has the DTMF detection is an ic chip 4.

Memory is an ic chip 5.

Function key circuit (13) is set by resistance R 3-R9, ic chip 14 constitutes, ic chip 14 triggers function key and the signal of telecommunication that produces changes into binary-coded decimal and delivers to the data/address bus of central control circuit by ic chip 7, and ic chip 1 sends control signal corresponding according to the program of ic chip 3 stored.

Prevent usurping testing circuit (22) by amplifier IC11:B, resistance R 21, R22, capacitor C 11 and diode D3 constitute, the L1 end of the resistance R 25 on input L1 and the telephone line links to each other, when phone is in wait state, voltage on the telephone wire route is undergone mutation, signal of telecommunication of output output of amplifier IC11:B is given the ALMT end of ic chip 14, through IC7 to IC1, IC1 usurps telephone call according to the program judgement generation that sets in advance in IC3, send interference signal simultaneously, output to chip microprocessor.

Anti-eavesdrop testing circuit (23) is by amplifier IC11:C, resistance R 18, R52, capacitor C 15 and diode D1 constitute, line end L2 linked to each other in input was connected on, output terminals A LML links to each other with the 7 pin ALML end of IC1, and when phone was in user mode, the voltage on the interior line end L2 changed suddenly, signal of telecommunication of output output of amplifier IC11:C is given the ALML end of ic chip 1, and IC1 judges that according to the program that sets in advance in IC3 producing tap phone reports to the police.

Busy tone testing circuit (14) is by ic chip 12, resistance R 40-R44, and capacitor C 16, C21, C25 constitute, and output INT1 links to each other with the INT1 end of ic chip 1, and input is connected on interior lines L2 and holds.

External tapping circuit (21) by IC91,1C92, IC93, IC94 and resistance R 2 lead into.

Bell flowing detecting circuit (6) mainly is made of IC18 and its peripheral electron element.

Dial-up circuit (7), liquid crystal display drive circuit (9) mainly is made of IC15 and its peripheral electron element.

Mobile phone amplifying circuit (10) mainly is made of IC16 and its peripheral electron element.

Base amplifying circuit (11) mainly is made of IC17 and its peripheral electron element.

One, in-house operation

1, message is set:

Message is set comprises that 1. owner is set leaves a message; 2. kinsfolk's message is set.

Press function key OGM or HOME, wherein OGM is owner's key of leaving a message, PLAY is kinsfolk's key of leaving a message, central control circuit receives indoor message signal, send control signal and give IC4, IC4 control IC 5 enters recording state, this moment, (IC1) 14 pin (DCSW end) of central control circuit sent control signal, make relay J normally opened contact J-1 closure, (IC8) 16 pin (OUTS end) of central control circuit send and control signal to IC19:B simultaneously, make the IC19:B conducting, operator's sound can convert the signal of telecommunication to by microphone B1-2, enter IC17 via IC19:B to the MIC of base amplifier end and amplify, carry out the A/D conversion through triode V1 to IC4, be stored in again in the section of IC5 correspondence by the 27 pin output of IC17.

2, listen to message:

Listening to message comprises 1. listening to message is set; 2. listen to guest's message.

Press function key MENO or PLAY, central control circuit receives indoor playback signal, send control signal and give IC4, IC4 control IC 5 enters tone playing state, at this moment, relay J normally opened contact J-1 closure, 9 pin of IC8 in the central control circuit (SPKRS end) send control signal, make the IC19:D conducting, then central control circuit passes to reproduction command from data/address bus the CD mouth of IC4, IC4 begins from the section of IC5 correspondence reading of data and carries out the D/A conversion to the D mouth, analog signal is through 30 pin (AOUT end) output of IC4, through capacitor C 29, resistance R 34, the IC11:A amplifier, IC19:D, IC20 becomes sound to loudspeaker (19) with the information reverting that is stored in the IC5.

Two, field operation

When being driven into this phone from outdoor telephone, at first bell flowing detecting circuit carries out the ringing-current detection, when detecting three (can set several times as required) rings, the output INT0 of bell flowing detecting circuit exports the 12 pin INT0s end of a signal to IC1, the 16 pin WR end of IC1 is then given low pulse of 54 pin of IC4, give IC4 with reproduction command from data/address bus, 2 pin MICS end output, one high level that makes IC8 simultaneously is to IC19:C, allow the IC19:C conducting, make 5 of IC8,6 and 9 pin are SPKS, SPKRS and OUTS end output one low level are to IC19:A, IC19:B and IC19:D, allow IC19:A, IC19:B and IC19:D close, relay J normally-closed contact J-2 closure, IC4 reads in the message digital signal to the D mouth from IC5, handing over through the D/A conversion is analog signal, by the 27 pin MOUT2 end output of IC4, through the MIC of IC19:C to IC17 end, after amplifying by IC17, output on telephone wire L1 and the L2 by 27 pin of IC17.

After having put owner's message, 2 pin MICS end output, one low level of IC8 allows IC19:C end to IC19:C, and IC19:A, IC19:B, IC19:C and IC19:D are and end at this moment, and IC1 writes the recording order to IC4 again, and can operate this moment outdoor;

1, message:

Speech signal is through diode D1-4, and relay J normally-closed contact J-2 penetrates with U11 to IC4, carries out A/D conversion in IC4, with the storage after the conversion in IC5.

After message finishes on-hook, promptly can produce busy-back signal on the telephone wire, busy-back signal is through diode D1-4, relay J normally-closed contact J-2, to the input of busy tone testing circuit, the busy tone testing circuit can send the 13 pin INT1s end of an interrupt signal to IC1 according to detected busy tone, IC1 receives promptly to send to IC4 by address bus after the interrupt signal and stops the recording order, and IC4 promptly stops recording operation.

2, input password:

One group of dial key is pressed in continuation on outdoor telephone, then double-audio signal is through diode D1-4, relay J normally-closed contact J-2, penetrate with U11 to IC4, in IC4, carry out the A/D conversion, be compiled into binary-coded decimal, detect simultaneously, central control circuit judges whether to meet the set condition of setting program in the IC3, (dummy letter is 111), if press 111 dial keies on outdoor telephone, then IC4 sends one group of data-signal by the D mouth to data/address bus, IC1 promptly prepares to send a series of control signals, wait for again on outdoor telephone by one group of dial key, according to the rules not on the same group dial key can change password accordingly, change being provided with message, listen to message, the operation of the household electrical appliance that opening and closing link to each other with this phone external circuits mouth etc.

For example:

1. to make password into 999;

If again by 1 key, central control circuit receives the outdoor change code signal (supposing to be provided with for the change message by 1 key) that transmits, central control circuit enters change password state, wait for that the user inputs new password, at this moment, in input 999, then new password is 999, and operation needs input 999 to carry out again later on.

2. change is provided with message;

If again by 2 keys, central control circuit receives outdoor message signal (supposing to be provided with for the change message by 2 keys), send control signal and give IC4, IC4 control IC 5 enters recording state, this moment, (IC1) 14 pin (DCSW end) of central control circuit sent control signal, relay J normally-closed contact J-2 remains closed, make 2 of IC8 simultaneously, 5,6 and 9 pin are MICS, SPKS, SPKRS and OUTS end output one low level are to IC19:A, IC19:B, IC19:C and IC19:D, allow C4:A, IC19:B, IC4:C and IC19:D close, operator's sound can reach interphone by telephone wire, through diode D1-4, relay J normally-closed contact J-2, penetrate with U11 to IC4, in IC4, carry out A/D conversion, with the storage after the conversion in IC5.

3. listen to message;

If again by 3 keys, central control circuit receives outdoor playback signal (supposing to be provided with for the change message by 3 keys), send control signal and give IC4, IC4 control IC 5 enters tone playing state, at this moment, relay J normally-closed contact J-2 remains closed, IC1 sends control signal, make IC4 read in the message digital signal to the D mouth from IC5, become analog signal through the D/A conversion, by the 27 pin MOUT2 end output of IC4, through the MIC of IC19:C to IC17 end, after amplifying by IC17, output on telephone wire L1 and the L2 by 27 pin of IC17.

4. the household electrical appliance that link to each other with this phone external circuits mouth of opening and closing;

If again by 4 keys or 5 keys, central control circuit receives outdoor unlatching or shutdown signal (is supposed by 4 keys for opening, 5 keys are for closing), send control signal and give IC8, IC8 exports a high level or low level is opened at 12 pin, open or close the external tapping circuit, in like manner, by on the same group telephone key not, 15,16,19 pin of may command IC8 export a high level or low level is opened, open or close the external tapping circuit, the more external tapping circuit of control also can be set as required.

Three, setting of Bao Jinging and releasing

With alarm and 2 of IC7 central control circuit, 4,6, a pin in 8 links to each other, when dangerous situation takes place when, alarm is exported a signal and is given IC7, IC7 sends a group alarm signal by data/address bus to IC1, make relay J normally-closed contact J-2 closure, export the HOOK end of a high level at 5 pin of IC1 to dial-up circuit, make this phone be in hands-free state, simultaneously, 2 of IC8,5,6 and 9 pin are MICS, SPKS, SPKRS and OUTS end output one low level are to IC19:A, IC19:B, IC19:C and IC19:D, allow IC19:A, IC19:B, IC19:C and IC19:D close, export end level to the triode P10 in the dial-up circuit at the 6 pin M1SW of IC1 end, make triode P3 conducting (being equivalent to press the M1 storage key), make dial-up circuit send the double-audio signal of one group of telephone number of storing in advance, 33 pin output by IC15, through triode V4, V3, electrical equipment J normally-closed contact J-2, diode D1-4 is to telephone wire, if the line is busy or nobody connects for the number telephone of storage in advance, produce busy-back signal on the telephone line, the output INT1 output interrupt signal of busy tone testing circuit is to the end of the 13 pin INT1 of IC1, the 5 pin output low levels of IC1, and be high level, make this phone from newly opening once again, still be in hands-free state, at this moment, hold output low level to the triode V11 in the dial-up circuit at the 7 pin M2SW of IC1, make triode V11 conducting (being equivalent to press the M2 storage key), make dial-up circuit send another group double-audio signal of the telephone number of storage in advance, so circulation, can send the telephone number that several are stored in advance, (or on this telephone set by mute key) just interrupts alarm operation till the number telephone of storage in advance has the people to connect, then the IC1 of central control circuit sends control signal and gives IC4, IC4 control IC 5 enters tone playing state, at this moment, relay J normally-closed contact J-2 remains closed, IC19:C is in conducting state, IC4 reads in default warning message digital signal to the D mouth from IC5, become analog signal through the D/A conversion, output 30 pin output from IC4, by resistance R 16, export from the MOUT2 end again after the R17 dividing potential drop, through the MIC of IC19:C to IC17 input, after amplifying by IC17, output on interior lines L2 and the telephone wire L1 by 27 pin of IC17.

Four, prevent to eavesdrop and usurp this telephone wire

1, prevents to eavesdrop this telephone wire;

When this phone is in user mode, other people take place commits theft when listening with phone and in that this telephone wire is enterprising, the anti-eavesdrop testing circuit is exported a low level and is given central control circuit, the 9 pin VVCC of IC7 end also inputs to the voltage signal on the VVCC end of interior lines the data/address bus of central control circuit through IC7 simultaneously, judge by central control circuit, when VVCC is eavesdropping during for high level, this machine sends the eavesdropping alarm signal, otherwise is normal.

2, prevent to usurp this telephone wire;

When other people usurp with phone and on this telephone wire when generation, the anti-testing circuit of usurping is then exported the 11 pin ALMT end that a low level is given IC14, bell flowing detecting circuit also detects the signal on the telephone wire simultaneously, and testing result delivered to central control circuit, the 9 pin VVCC end of IC7 also inputs to the voltage signal on the VVCC end of interior lines the data/address bus of central control circuit through IC7, central control circuit is judged according to the program that sets within it, if no ringing signal, VVCC is a low level, then usurp the situation of this telephone wire, this machine sends interference and usurps alarm signal, otherwise is normal.

Claims

1. a multi-functional dtelegraphone comprises base (1), be placed on the mobile phone (2) on the base, be arranged on display (3) and dial key (4) on the base (1), be installed in the circuit board (5) in the base (1), on described circuit board (5), include bell flowing detecting circuit (6), dial-up circuit (7), switching circuit (8), liquid crystal display drive circuit (9), mobile phone amplifying circuit (10), base amplifying circuit (11) is characterized in that being provided with on described base (1) function key (12) is set;

On described circuit board (5), also include function key circuit (13) is set, busy tone testing circuit (14), memory (15) has the voice monolithic processor (16) that DTMF detects, central control circuit (17);

Described memory (15) links to each other with the voice monolithic processor (16) that has the DTMF detection, the control end that has the voice monolithic processor (16) of DTMF detection links to each other with the data/address bus of central control circuit (17), the output that has the voice monolithic processor (16) of DTMF detection is connected on the switch J (18) by switching circuit (8), and the other end of switch J (18) links to each other with telephone line;

The described output that function key circuit (13), dial-up circuit (7) and bell flowing detecting circuit (6) are set all is connected on the chip microprocessor (17), the input of bell flowing detecting circuit (6) is connected on the telephone line, and the input of dial-up circuit (7) is connected between switching circuit (8) and the switch J (18);

The output of described base amplifying circuit (11) is connected to the input of the voice monolithic processor (16) that has the DTMF detection, link to each other with switching circuit (8) again, loudspeaker (19) on the base (1) all link to each other with input by the output of switching circuit (8) with base amplifying circuit (11) with microphone (20), and switching circuit (8) is controlled by central control circuit (17).

Described busy tone testing circuit (14), its input are connected between switching circuit (8) and the switch J (18), and output is connected on the central control circuit (17).

2. multi-functional dtelegraphone according to claim 1, it is characterized in that on described circuit board (5), also including external tapping circuit (21), external tapping circuit (21) is connected on the central control circuit (17), by the switch on and off in chip microprocessor (17) the control external tapping circuit (21).

3. multi-functional dtelegraphone according to claim 2, it is characterized in that being provided with electronic switch V10, V11, V12 between the contact under the storage button in described dial-up circuit (7), control end M1SW, M2SW, the M3SW of electronic switch V10, V11, V12 link to each other with central control circuit.

4. according to claim 1,2 or 3 described multi-functional dtelegraphones, it is characterized in that also including on described circuit board (5) and prevent usurping testing circuit (22), its input is connected on the telephone line L1, and output links to each other with chip microprocessor (17).

5. according to claim 1,2 or 3 described multi-functional dtelegraphones, it is characterized in that on described circuit board (5), also including anti-eavesdrop testing circuit (23), its input is connected between switching circuit (8) and the switch J (18), and output is connected on the central control circuit (17).

6. multi-functional dtelegraphone according to claim 4, it is characterized in that on described circuit board (5), also including anti-eavesdrop testing circuit (24), its input is connected between switching circuit (8) and the switch J (18), and output is connected on the central control circuit.

7. according to claim 1,2 or 3 described multi-functional dtelegraphones, it is characterized in that at described switching circuit (8) by electronic analog swtich IC19:A, IC19:B, IC19:C and IC19:D constitute, at the output of described base amplifying circuit (11) with have between the output of the voice monolithic processor (16) that DTMF detects and the loudspeaker (19) and be respectively equipped with electronic analog swtich IC19:A and IC19:D, between the input of the output that has the voice monolithic processor (16) that DTMF detects and microphone (20) and base amplifying circuit (11), be respectively equipped with electronic analog swtich IC19:C and IC19:B, electronic analog swtich IC19:A, IC19:B, the control end of IC19:C and IC19:D links to each other with central control circuit, and wherein the control end of electronic analog swtich IC19:A and IC19:B also links to each other with interior lines L1.

8. according to claim 1,2 or 3 described multi-functional dtelegraphones, it is characterized in that at described switch J (18) for having the relay of single-pole double throw, its movable contact spring links to each other with interior lines L2, fixed touching plate one end J-2 is connected on the telephone wire L1, other end J-1 is connected on the DC power supply Vcc, and the coil of relay is connected on the central control circuit.

9. according to claim 1,2 or 3 described multi-functional dtelegraphones, it is characterized in that constituting by IC1, IC2, IC3, IC7 and IC8 at described chip microprocessor.

10. according to claim 1,2 or 3 described multi-functional dtelegraphones, it is characterized in that the voice monolithic processor that detects at the described DTMF of having is the UPD77501 integrated package.