CN2408623Y - Card network telephone managing device - Google Patents

Abstract

The utility model relates to a card type network telephone managing device, which comprises a telephone line interface, a polar automatic switchover circuit, a main control circuit which takes a microprocessor IC1 as a control core, an off-hook detection circuit connected with the main control circuit, a speech isolating circuit, a number transmitting circuit, a number receiving circuit, a speech detection circuit, an IC card interface circuit, and a line status detection and control circuit. The utility model can receive and discriminate telephone numbers, and simultaneously, can automatically and quickly dial. The effective management of the telephone fees is realized.

Description

Cassette networking telephone manager

The utility model relates to a kind of telephone supervisor, and especially a kind of cassette networking telephone manager belongs to the telephone set optional equipment.

Along with the continuous expansion of network communication field, the real-time speech transmissions in the network (being the IP technology) enters the practical stage.Each enterprises and institutions all wants to utilize existing IP CARD, reduce our unit's communication cost, but the cumbersome dial mode of IP CARD has had a strong impact on the expansion of its scope of application, and be not easy effective management of the expense that realizes, make a call and must at first dial access code (3-6 position), voice suggestion sign indicating number (1) before one, with card number of the account (8-12 position), with clip pin (4), function selection code etc., always total 16-23 item sign indicating number.Circuit just can be dialed required telephone number after connecting, and these numbers are not only too many, and are difficult to remember, and is illogical as if pushing the wrong number or phone in the input process, must all operate again.

The purpose of this utility model provides and a kind ofly can receive differentiation to telephone number, carries out automatic speed dialling simultaneously, and effectively manages the cassette networking telephone manager that telephone charges is used.

The technical scheme that realizes the utility model purpose is: include telephone line interface, the polarity automatic switching circuit, with the governor circuit of microprocessor IC1 as the control core, the off-hook detection circuit that connects with governor circuit, voice buffer circuit, number transtation mission circuit, number receiving circuit, speech detection circuit, IC-card interface circuit and line status detect and control circuit.

The utlity model has positive effect:

1, before calling, in the common information input governor circuit memory of the IP phonecard that needs are dialed, each user profile input user of the IP phonecard that needs are dialed is separately in the memory of IC-card, when the user calls, at first IC-card is inserted in the utility model, mention Telephone handset, circuit is connected, the off-hook detection electric circuit inspection is to off hook signal, start governor circuit and enter normal operating conditions, and the legitimacy of differentiation user IC-card, and demonstration corresponding information, carry out corresponding operating, detect the user simultaneously and whether dialed telephone number, if detect number, then start the voice buffer circuit immediately, make number can't be sent on the circuit, but governor circuit of the present utility model still can also temporarily store by receiving number, differentiate, if this number is the number that can use the IP mode to dial, microprocessor reads the IP phonecard access code so, number of the account, password etc., and control number transtation mission circuit, with the IP phonecard access code, number of the account, password, the telephone number that the user dials sends, and does not but influence the user and continues dialing, promptly in user's dialing numbers, control circuit is the receiving number signal on the one hand, also numerical signal is sent to outside line on the other hand, receiving number is differentiated automatically, automatically the purpose of speed dialling thereby reached.When the user dialed phone number, the speech detection circuit began to detect voice signal, the determination procedure process.

2, owing to IP phonecard access code, number of the account, password etc. have been imported the utility model before calling, when calling, behind the insertion IC-card, the user only need directly dial phone number, and is very easy to use at every turn.

3, utilize the low advantage of telephone expenses expense of IP phonecard, saved telephone charges usefulness, and good confidentiality.

4, utilized IC-card read-write technology, a people one card has reached the effectively purpose of management of telephone charges.

Below in conjunction with drawings and Examples the utility model is described in further detail.

Fig. 1 is a theory diagram of the present utility model.

Fig. 2 is circuit theory diagrams of the present utility model.

As shown in Figure 1: cassette networking telephone manager, include telephone line interface 1, polarity automatic switching circuit 2, with the governor circuit 3 of microprocessor IC1 as the control core, the off-hook detection circuit 4 that connects with governor circuit 3, voice buffer circuit 5, number transtation mission circuit 6, number receiving circuit 7, speech detection circuit 8, IC-card interface circuit 9 and line status detect and control circuit.

As shown in Figure 2: telephone line interface 1 comprises telephone interface socket J3, line interface socket J2.Polarity automatic switching circuit 2 is by diode D13, D14, relay R Y, triode Q10, Q9, resistance R 26, R13, R21, R50 form, RY is two group pulse relays, can obtain the combination of different contact by two groups of coils being applied voltage respectively, as shown in the figure, no matter the phone inlet wire is how, the polarity of relay central contact all remains unchanged, even user's on-hook is also constant.Voice buffer circuit 5 is by coil L1, L4, capacitor C D6, C17, triode Q5, Q6, Q7, diode D4, D3, resistance R 38, R24 forms, and controlled by microprocessor CPU, microprocessor 17 pin are low level during normal talking, the Q7 conducting, and Q5 ends, L1, L4 is by short circuit, the CD6 open circuit, when carrying out fast automatic dialing, microprocessor 17 pin are high level, Q7 ends, Q5 conducting, L1 like this, L4 is serially connected in the loop, because L1, CD6 between the L4 also is access in the loop, therefore the user dials the number and can not send on the circuit, but microprocessor CPU still can receive, and can be simultaneously as required with the access code of IP phonecard, account number, passwords etc. send by number transtation mission circuit 6, but can not influence the user and dial phone number.Line status detection and control circuit 10 are by capacitor C D4, CD5, optocoupler OPO2, triode Q4, Q1, Q2, Q3, resistance R 31, diode D1 and voltage-stabiliser tube Z1 form, when user's off-hook, line voltage distribution is reduced to about 10 volts from 48 volts, be lower than the conducting voltage of voltage-stabiliser tube Z1, Q1 ends, Q2, Q3 conducting, because the filter action of inductance coil L2, capacitor C D2, voltage-stabiliser tube Z2, microprocessor CPU obtains the galvanic current source.Owing to user's off-hook, electric current flows through OPO2 simultaneously, and the photoelectrical coupler conducting obtains voltage on the resistance R 25, transistor Q4 conducting, and 11 pin of CPU are low level, microprocessor CPU detects off hook signal, and Q2 enters more saturation conduction.When user's on-hook, situation is opposite, and line voltage distribution rises to 20 from about 10 volts more and lies prostrate, and exceeds the conducting voltage of voltage-stabiliser tube Z1, the Q1 conducting, and Q2, Q3 end, and line voltage distribution further returns to 48 volts.Number transtation mission circuit 6 is made up of integrated chip IC6, triode Q15 and peripheral cell thereof, IC6 is that model is the encoder of HT9200A, after IC6 receives the numerical signal that microprocessor CPU sends here, convert thereof into double-audio signal, amplify by Q15 and deliver to telephone line.The decoding circuit that number receiving circuit 7 is made up of IC4 (model is HT9170) and peripheral cell thereof, it is used for the receiving number signal and delivers to CPU and handle.Detect output function the morning that the utility model has made full use of IC4, when the 10MS left and right sides appears in signal that the user dials the number, microprocessor just can detect and start voice buffer circuit 5 immediately, CPU received signal loop and transmission signal circuit are isolated, be that the numerical signal dialed of user is by capacitor C D6 short circuit, can only be sent to CPU, and the signal that CPU sends directly send outside line, can do not received by telephone set, promptly do not influence sending out number of telephone set, subsequent user is dialed the number and can not be sent on the circuit, because stored-program control exchange can not receive the signal that is shorter than 50MS, so continue to send dialing tone, and receive the IP phonecard access code that microprocessor is transmitted to the user, account number, password, telephone number etc.The amplifying circuit that speech detection circuit 8 is made up of integrated transporting discharging IC2 (model is TL 06 2) and peripheral cell thereof mainly amplifies the various voice signals that occur on the circuit, and shaping also send microprocessor CPU to detect, judge with the determination procedure process.IC-card interface circuit 9 is made of IC-card assembly J1, directly under the control IC-card is carried out read-write operation at microprocessor CPU.Memory in the governor circuit 3 is made of two-wire serial electrically-erasable memory IC5, and the user that storage is necessary can revise the information of setting, also can drop-out during power failure.LCD display circuit 12 is made of integration module IC3 (model is the LCD module of SM1002), joins with CPU, and man-machine interface intuitively can be provided.Bridge rectifier that power circuit 11 is made of D7, D8, D9, D10 111 is rectified into direct voltage with voltage signal, and through triode Q3, R35, and the switching circuit 112 that inductance L 2, diode D1 1 constitute is supplied with the required power supply of whole chips; By triode Q16, Q17, diode D12, resistance R 17 add the power supply accessory circuit 113 composition standby power systems that external connection battery E constitutes, and will start standby power system when line current is not enough, otherwise line current will charge to reserve battery E.

Off-hook detection circuit 4 primary structures are: resistance R 33 1 termination Q3 collector electrodes, this terminal voltage is influenced by user's dislodging machine, the base stage of another termination triode Q18, the collector electrode of the emitter of Q18 and switching tube Q19 joins, the base stage of Q19 is by resistance R 32, voltage-stabiliser tube Z3 and IC1 are that the power end (VCC) of CPU joins, the base stage of the collector electrode of Q18 and triode Q8, the emitter of Q8 links to each other with the reset terminal of CPU, this part circuit can be used for detection line voltage, promptly detect whether on-hook of user, also can be used to detect power supply and whether reach normal operating conditions, if power supply does not reach normal operating conditions, then cpu reset when the telephone set on-hook, can provide the reliable reset signal for CPU by circuit and power sense circuit 4.This governor circuit 3 and corresponding program thereof can be supported all IP phonecards of release at present.The utility model also have with governor circuit 3 in the joining LCD display module of CPU, the LCD module is that model is the ic chip 3 of SM1002, it can provide man-machine interface intuitively.

Operation principle of the present utility model is as follows: outside line and telephone set wiring are inserted telephone interface J2, J3 two sockets respectively, insert IC-card, during the telephone set off-hook, 2 pairs of line polarities of polarity automatic switching circuit carry out conversion, guarantee very positive voltage of Q7 current collection, when user's off-hook, line voltage distribution is reduced to about 10 volts from 48 volts, be lower than the conducting voltage of voltage-stabiliser tube Z1, Q1 ends, Q2, Q3 conducting, line voltage distribution is through the filtering of inductance coil L2, capacitor C D2, voltage-stabiliser tube Z2, for microprocessor CPU provides the galvanic current source.Owing to user's off-hook, electric current flows through photoelectrical coupler OPO2 simultaneously, and photoelectrical coupler OPO2 conducting obtains voltage on the resistance R 25, transistor Q4 conducting, and microprocessor detects off hook signal, and the further conducting of Q2.Microprocessor is then judged current conversation for receiving calls by on speech detection circuit 8 detection lines whether dialing tone or voice being arranged if any voice, and microprocessor CPU enters waits for user's hook state.Then wait for subscriber dialing if any dialing tone, and read information on user's IC-card, for judging user identity, use rank etc., when the 10MS left and right sides appears in signal that the user dials the number, microprocessor just can detect and start voice buffer circuit 5 immediately, signal receiving circuit and signal sending circuit are isolated, subsequent user is dialed the number and can not be sent in the outside line, because stored-program control exchange can not receive the signal that is shorter than 50MS, so continue to send dialing tone to the user, the IP phonecard access code that microprocessor is transmitted on user's IC-card by number transtation mission circuit 6, account number, password etc., and the user dials the number, and amplify by the various voice signals that occur on 8 pairs of circuits of speech detection circuit, send microprocessor to detect after the shaping, judgement is with decision number retransmission process process, promptly when the user dials phone number, CPU is also sending telephone number signal simultaneously, has reached the purpose of automatic speed dialling.Wait in the process of closing of the circuit that the user microprocessor CPU can send the process sound by Q11, Q12, Q13 and listen to the user.During off-hook, if supply voltage VCC is undesired or circuit is undesired, the Q18 in the off-hook detection circuit 4 ends, the Q8 conducting, and making the reset terminal of CPU is high level, thereby makes the CPU reliable reset.If call mistake, when needing on-hook to dial again, detect this variation and deliver to off-hook detection circuit 4 by R33 and make Q18 end, the Q8 conducting, the reset terminal of CPU is a high level, CPU resets immediately, waits for subscriber dialing again.When programming, can carry out the state setting, phonecard access code, voice suggestion sign indicating number, account number, password can be set, function selection code etc.Before calling, by being provided with, in advance with above information storage in the utility model, when calling later on, can discern by telephone supervisor.So only need dial phone number when calling later on, CPU just can discern automatically, finishes the transfer of all numbers by transtation mission circuit, need not to re-enter the corresponding number of phonecard, reach the purpose that to differentiate automatically telephone number, saved telephone expenses.Human-computer dialogue is convenient in the liquid crystal display of telephone supervisor, and user's all operations all can directly show.IC-card interface circuit and CPU directly join, and the user has only possessed IC-card, just can call, otherwise can't call, and have realized effective management that telephone charges is used.

Claims (4)

1, a kind of cassette networking telephone manager, it is characterized in that: include telephone line interface (1), polarity automatic switching circuit (2), with the governor circuit (3) of microprocessor IC1 as the control core, the off-hook detection circuit (4) that connects with governor circuit (3), voice buffer circuit (5), number transtation mission circuit (6), number receiving circuit (7), speech detection circuit (8), IC-card interface circuit (9) and line status detect and control circuit (10).

2, cassette networking telephone manager according to claim 1 is characterized in that: polarity automatic switching circuit (2) mainly is the polarity transformation circuits that is made of relay R Y and triode Q9, Q10; The core circuit of off-hook detection circuit (4) is: the signal wiring is joined by resistance R 33 and the base stage of triode Q18, the collector electrode of Q18 with by resistance R 34, R40, capacitor C 3, the base stage of triode Q8 in the amplifying circuit that triode Q8 constitutes is joined, the emitter of Q18 and switch triode Q19 join, and the base stage of Q19 is joined by resistance R 32, voltage-stabiliser tube Z3 and power end Vcc; The core circuit of voice buffer circuit (5) is the signal isolation circuit that is made of inductance L 1, L4, capacitor C D6 and triode Q5; Number transtation mission circuit (6) is by integrated chip IC6 with mainly by resistance R 27, R28, R29, R30, the coding circuit that the amplifying circuit that triode Q15 constitutes is formed; Number receiving circuit (7) is the decoding circuit that is made of integrated chip IC4 and respective peripheral circuit thereof; Speech detection circuit (8) is the comparison amplifying circuit that mainly is made of integrated transporting discharging IC2:A, IC2:B; IC-card interface circuit (9) is made of IC-card assembly J1; Line status detects and control circuit (10) is mainly by triode Q1, Q2, Q3, Q4, resistance R 31, capacitor C D4, CD5, diode D1, the switching circuit that voltage-stabiliser tube Z1 and optocoupler OPO2 constitute.

3, cassette networking telephone manager according to claim 1 and 2, it is characterized in that: also have power circuit (11), it is connected in series successively by bridge rectifier (111), power change-over switch circuit (112) and power supply accessory circuit (113) and forms, and described power change-over switch circuit (112) mainly is made of resistance R 35, inductance L 2, diode D11; Power supply accessory circuit (113) mainly is made of switch triode Q16, Q17 and battery E.

4, cassette networking telephone manager according to claim 3 is characterized in that: also have and the joining LCD display circuit of governor circuit (3) (12).

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