CN2182499Y - Multi-function long-distance telephone enciphering device - Google Patents

Abstract

The utility model relates to a multi-function long-distance telephone enciphering device, having the functions of setting, identifying, storing, enquiring and printing out the identification cipher of long-distance telephone talker. The utility model comprises an external line connecting port 9, a telephone connecting port 8, a printer connecting port 4, a detection unit 1, an SCM 2, a liquid crystal display 3, a power supply 5 and a control unit 6. The detection unit 1 is coupled between the external line connecting port 9 and the SCM 2. The control unit 6 is connected between the external line connecting port 9 and the telephone connecting port 8, and the control unit 6 receives the outcoming signal from the SCM 2. The liquid crystal display 3 and the printer connecting port 4 are respectively coupled with the SCM 2. The utility model has simple structure, low cost and the functions protecting and treating power failure.

Description

Multi-function long-distance telephone enciphering device

The utility model relates to the smart phone based on microprocessor, be specifically related to utilize microprocessor to telephone set toll message encrypt the technology of control, more particularly, relate to a kind of multi-functional long-distance call encryption device that the long-distance call telephone user identifies setting, identification, storage, inquiry and printout function that has.

To the control of using toll telephone is that many units feel the problem of having a headache for a long time always, controls to make sternly that the employee feels to lack trust, traffic affecting is normally carried out; Do not add control, " public words private " phenomenon also can't bear burden seriously, economically.At present the countermeasure that adopts has: 1. on telephone set, add the locking device, but this locking device and unreliable, and must the personal management, expense is also implemented one by one than difficulty, and human factor is bigger, and key loss or joined also by private happens occasionally; 2. handle long-distance " dialing restriction " business in telecommunication bureau, but this method only has password shared for the user, expense can't be implemented too, and As time goes on, the increasing of password number of users, and so-called password also can't be controlled the use of long-distance call effectively.China's utility model patent " dialing restriction of cipher program controlled telephone and timer " has proposed a kind of long-distance call exhalation control device of setting and discerning telephone user's specific identifier (password); but; this device is not owing to for example consider power down protection, problem such as redial; and complex structure, cost is higher, volume is big, is not easy to promote.

The purpose of this utility model is to provide a kind of multi-functional long-distance call encryption device that overcomes the prior art shortcoming, and this device need not ad hoc keyboard but utilized keyboard on the telephone set, and has characteristics simple in structure, that function is more complete.This device can be each long-distance call user and sets one group of independently password or be referred to as user identification code, the long-distance call user before the exhalation long-distance call must by with telephone set that this device is connected on keypad import this long-distance call user's user identification code, only can carry out long-distance call when the user ID of input is legal sign breathes out, otherwise, use long-distance call to breathe out without any approach.After the long-distance call user has imported the right user identification code and carry out long-distance call when breathing out, device of the present utility model can be after circuit be connected, and journal caller's password is user identification code, conversation ground area code, the side's talked about telephone number and air time.Behind the end of conversation, can above-mentioned information will be stored automatically.

Another purpose of the present utility model is to provide a kind of multi-functional long-distance call encryption device, this dress can be the long-distance call keeper special purpose system is provided, whole long-distance call service recorders that the keeper uses this password to access at any time and stored in this device also are presented on the LCD one by one, also can export above-mentioned record by the printer prints that is connected on this device; The keeper also can cancel or change certain group password as required, manages thereby effectively long-distance call is used.

Another purpose of the present utility model is to provide a kind of multi-functional long-distance call encryption device, and this device is breathed out to local telephone network and do not imposed any restrictions and record, but can show call timers on LCD.

The purpose of this utility model is to realize like this, construct a kind of multi-functional long-distance call encryption device, comprise: outside line connectivity port 9, phone connectivity port 8, printer connectivity port 4, detecting unit 1, single-chip microcomputer 2, LCD 3, power supply 5, control unit 6, described detecting unit 1 is coupling between described outside line connectivity port 9 and the described single-chip microcomputer 2, described control unit 6 is connected between described outside line connectivity port 9 and the described phone connectivity port 8, described control unit 6 is also accepted the output signal from described single-chip microcomputer 2, and described LCD 3 and described printer connectivity port 4 are coupled with described single-chip microcomputer 2 respectively.

Multi-functional long-distance call encryption device of the present utility model, its feature also is, described detecting unit 1 comprises the bridge rectifier that its input is connected with described outside line connectivity port, and input all with the coupling of described rectification circuit output end carry the on-hook signal passage, the dialing tone signalling channel, pulse code signalling channel and dual tone phone coded signal passage, the described on-hook signal passage of carrying is by a comparator (U1A), level translator (U2A) is coupled to form, and described dialing tone signalling channel is by amplifier (U1B), single-tone demodulator circuit (U3), shaping circuit (U2B) and oscillating circuit (U2C) are coupled to form; Described pulse code signalling channel is made of shaping circuit (U2D) and signaling start-up circuit; Described dual tone phone coded signal passage comprises special-purpose double-tone decoding circuit (U4) frequently.

Multi-functional long-distance call encryption device of the present utility model; its feature is that also described single-chip microcomputer 2 comprises single-chip microcomputer (8031), program storage (27256EPROM), data storage (6264SRAM), address latch (74LS373), I/O expander (8155), reset circuit and power down protection circuit.

Multi-functional long-distance call encryption device of the present utility model, its feature also be, described control unit 6 is made of transistor.

Implement multi-functional long-distance call encryption device of the present utility model, compared with prior art, owing to need not set up supplementary number code dialing keyboard, and the keyboard on the employing ordinary telephone set is inputed password and control code thereof, and the required management of long-distance call keeper the password menu that shows draw show down also can be realized need not special " putting several keys ", " increasing key " by the phone keyboard, " reducing key " reaches special hardware units such as " printing keys "; Not only simplified the structure, but also reduced cost.Select and replacement in 15 groups of passwords that " dialing restriction of cipher program controlled telephone and the timer " of prior art can only allow the long-distance call user be cured in EPROM, but can not revise and cancel certain password, have the problem of confidentiality and flexibility deficiency; Device of the present utility model then can be revised as required or be removed and respectively organize password by the long-distance call keeper, therefore has better practicality.Because the utility model adopts the control printing type promptly to control the printing ticket by the keeper, rather than real time print more helps the long-distance call management.And the printer interface that the utility model employing standard drives can drive wide, the short line printer of any kind of, but a tractor serves several purposes is reduced expenses.At last, the utility model also has the power down protection processing capacity.

In conjunction with the accompanying drawings, further specify embodiment of the present utility model, in the accompanying drawing:

Fig. 1 is the structured flowchart of multi-functional long-distance call encryption device of the present utility model;

Fig. 2 is the electrical schematic diagram of the detecting unit in the multi-functional long-distance call encryption device of the present utility model;

Fig. 3 is the electrical schematic diagram of the single-chip microcomputer in the multi-functional long-distance call encryption device of the present utility model;

Fig. 4 is the logic diagram of the control program stored in the described single-chip microcomputer.

Fig. 1 shows the structured flowchart of multi-functional long-distance call encryption device of the present utility model, multi-functional long-distance call encryption device of the present utility model can make a self-contained unit, is located at having of this self-contained unit surface of shell among Fig. 1: LCD 3, printer connectivity port 4, circuit access interface 9, a phone connectivity port 8 and a power line.Among Fig. 1, multi-functional long-distance call encryption device of the present utility model, comprise: outside line connectivity port 9, phone connectivity port 8, printer connectivity port 4, detecting unit 1, single-chip microcomputer 2, LCD 3, power supply 5, control unit 6, described detecting unit 1 is coupling between described outside line connectivity port 9 and the described single-chip microcomputer 2, described control unit 6 is connected between described outside line connectivity port 9 and the described phone connectivity port 8, described control unit 6 is also accepted the output signal from described single-chip microcomputer 2, and described LCD 3 and described printer connectivity port 7 are coupled with described single-chip microcomputer 2 respectively.Control unit 6 is made of a transistor.Display 3 adopts 16 LCD that show length, and 16 of each long-distance call record are: 2 of codes, 5 of ground area codes, 7 of telephone numbers, 2 of air times.Power supply 5 can be to take from civil power, and the reserve battery power supply of also can be when having a power failure purchasing in by machine in no instance can obliterated data thereby guarantee.

Fig. 2 is the electrical schematic diagram of detecting unit 1, outside line is divided into four the tunnel after by rectifier bridge, the first via is joined by potentiometer W1 and U1A-3 for carrying the on-hook signal passage, the P16 pin of the output U1A-1 of U1A by resistance R 3, U2A and the single-chip microcomputer U5 (see figure 3) of joining; The second the tunnel joins by C1, R4 and integrated circuit U1B, and the output U1B-7 of U1B joins by C2 and integrated circuit U3-3, and U3-8 joins by the 15 pin T1 of U2B, diode D6, U2C and single-chip microcomputer U5; Third Road joins by the T0 pin of resistance R 10, U2D, U2F and single-chip microcomputer U5, U2D-8 joins by the base stage of D8, R11, U2E, R13 and triode BG1, the INT0 of the collector electrode of BG1 and single-chip microcomputer U5 joins, the four the tunnel by C9, R14, R15, join with U4-2, U4-3, the 11-14 pin of U4 and the pin P10-P13 of single-chip microcomputer U5 join, and the base stage of the P15 of U5 and the triode UG3 in the control circuit is joined, and the collector electrode of UG3 and emitter are serially connected in (see figure 1) between outside line connectivity port 9 and the phone connectivity port 8.

1. carrying on-hook signal (LIET): U1A is comparator, and U2A is a level translator, and the B point is a low-voltage when carrying machine, and U2A is output as low level, is high level during on-hook.

2. dialing tone signal (VOIC): U1B is an amplifier, and dialing tone 450Hz signal is amplified to 0.5-1V, is input in the single-tone demodulation integrated circuit, and when dialing tone, the U3-8 output low level produces oscillator signal by U2c.

3. pulse code signal (PLUSE): when phone is sent out pulse, output negative pulse serial code after U2D, U2F shaping, U2E forms the signaling start-up circuit with outward element simultaneously, starts the pulse of microcomputer reception phone signaling.

4. dual tone phone sign indicating number: by the decoding circuit that special-purpose decoding integrated circuit U4 forms, the parallel binary-coded decimal of U4 output when phone sends double audio code, and produce signaling enabling signal STAR T.

As shown in Figure 3; single-chip microcomputer by 8031 and peripheral circuit form; an EPROM27256(U8) as program storage; a SRAM6264(U9) as data storage; this SRAM has the power down protection circuit; to guarantee that data can not lost under power-down state, 74LS373(U7) be address latch, there is special I/O extended chip 8155 to be used for the expansion I/O mouth in addition.

The semiotic function of each mouthful is described as follows:

8031(U5): P10-P13 double audio code (TONE0-TONE3)

P14 alarm signal (ALARM)

P15 control signal (CTRL)

P16 carries on-hook signal (LIFT)

INT0 signaling enabling signal (START)

T0 phone pulse code (PLUSE)

T1 dialing tone signal (VOIC)

8155(U6): the PA mouth shows mouth

PB mouth LPT

The single-chip microcomputer operation principle is described as follows: after powering on, and single-chip microcomputer 8031(U5) reset, P15 pin output low level, VG3 ends, and moves the main program in the single-chip microcomputer as shown in Figure 4 simultaneously. After the initialization, single-chip microcomputer detects carrying on-hook signal.After phone was carried machine, P15 exported high level, UG3 conducting, whether first that judges input simultaneously be " 0 " sign indicating number, as not being then to be city's speech phase, if " 0 " sign indicating number then is toll telephone, then receive 6 passwords, if correct, P15 exports a negative pulse, reclose circuit, allow input exchange area item and phone number and write down this area code and phone number, wait for connection information, when receiving that connection information promptly picks up counting.If password bad is waited for and re-entered password, if continuous three times are inputed by mistake, then the P14 output low level is reported to the police.With reference to figure 4,, wait for that then the keeper imports the control routine of corresponding demonstration, printing, modification, removing once more, and carry out corresponding code function if one group of password confirming of input is keeper's dedicated management password.

Claims (4)

1, a kind of multi-functional long-distance call encryption device, it is characterized in that comprising: outside line connectivity port 9, phone connectivity port (8), printer connectivity port (4), detecting unit (1), single-chip microcomputer (2), LCD (3), power supply (5), control unit (6), described detecting unit (1) is coupling between described outside line connectivity port (9) and the described single-chip microcomputer (2), described control unit 6 is connected between described outside line connectivity port (9) and the described phone connectivity port (8), described control unit (6) is also accepted the output signal from described single-chip microcomputer (2), and described LCD (3) and described printer connectivity port (4) are coupled with described single-chip microcomputer (2) respectively.

2, multi-functional long-distance call encryption device as claimed in claim 1, its feature also is, described detecting unit (1) comprises the bridge rectifier that its input is connected with described outside line connectivity port, and input all with the coupling of described rectification circuit output end carry the on-hook signal passage, the dialing tone signalling channel, pulse code signalling channel and dual tone phone coded signal passage, the described on-hook signal passage of carrying is by a comparator (U1A), level translator (U2A) is coupled to form, and described dialing tone signalling channel is by amplifier (U1B), single-tone demodulator circuit (U3), shaping circuit (U2B) and oscillating circuit (U2C) are coupled to form; Described pulse code signalling channel is made of shaping circuit (U2D) and signaling start-up circuit; Described dual tone phone coded signal passage comprises special-purpose double-tone decoding circuit (U4) frequently.

3, multi-functional long-distance call encryption device as claimed in claim 1; its feature is that also described single-chip microcomputer 2 comprises single-chip microcomputer (8031), program storage (27256EPROM), data storage (62 64SRAM), address latch (74LS373), I/O expander (8155), reset circuit and power down protection circuit.

4, multi-functional long-distance call encryption device as claimed in claim 1, its feature is that also described control unit (6) is made of transistor.

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