CN2183642Y - Number-locking fee counter for long distance telephone - Google Patents

Abstract

A number-locking and charging device for long-distance telephone is composed of telephone signaling detecting module, microcomputer module, terminal module and relay. The method is characterized in that: it is provided with a read-only memory for storing system monitoring, service processing program and editing cipher, and a read-write memory for storing toll number database and charging standard database. The telephone number of the long-distance telephone number which is not registered in the number library can be locked and limited, and the telephone can be automatically hung up. If the electronic lock password is typed, the lock number limit can be temporarily cancelled. Charging the long distance telephone by each time or by unregistered number, displaying the charging amount and printing the charging list. It is suitable for number-locking and charging device of long-distance direct dialing telephone.

Description

Number-locking fare-counting device for long-distance telephone

The device that the utility model relates to toll telephone lock number and charges.

The lock function of telephone set is exactly that the phone function is to limiting by first of electricity words number (or former position) numeral.If pressed and prohibited the numerical key of sending out for first, then telephone set does not send dial signaling or only sends the digital signalling of several of backs, makes the calling can not be successful.First is " 0 " during China regulation toll dialing, so the Lock for telephone function of China all is that first on lock is the number of " 0 " basically.Two kinds of lock methods are arranged at present, the one, with private key lock number, when needs are made a long-distance call, need only a switch of opening on the telephone set with private key and can transfer to the first toll number for " 0 ", the people who does not get key so just can't have been made a long-distance call; Another kind of way is to adopt " electronic lock " lock number, if dial the first electricity words number of prohibiting, must key in a password of agreement in advance earlier.The advantage of electronic lock is to open switch with key, and password is conversion easily also.Shortcoming is that password often changes, and causes confusion easily.The phone of domestic present two kinds of lock modes all has.Other and the matching used lock of telephone set number device all adopt above-mentioned lock method.Above-mentioned lock method in use often causes lock number management and plays the inconvenience of professional toll telephone, nor can strictness forbid the professional toll telephone of cracking down illegal activities.

The purpose of this utility model provides a kind of lock message accounting that is fit to general direct distance dialing call machine, and lock number is carried out in its can check numbers toll telephone of the unregistered number in storehouse, if key in the electronic lock password, and number restriction of the lock of this device that can disappear temporarily; Can take each the charging or unregistered number charging dual mode to toll telephone, and show the charging amount of money, printing is chargeed single.

The purpose of this utility model is achieved in that toll telephone lock taximeter is connected to form by telephone signaling detection module, computer module, terminal module, relay and system power supply computer bus mode routinely.The telephone signaling detection module comprises polar protective circuit, pulse dialing detector, calls out and carry out decoder, double voice multi-frequency receiver, interrupt signal generator.Computer module comprises central processing unit, read-only memory and reading writing memory.Terminal module comprises keyboard, calendar clock circuit, mini-printer and display screen.

Realize that the purpose of this utility model can also reach by following measure: adopt the 80C31 single-chip microcomputer to make central processing unit, carry out Business Processing and system monitor.Read-only memory adopts ultraviolet erasing electrically programmable memory, storage system monitoring, business processing program, Edit Password.Adopt electricity to wipe reading writing memory storage toll number storehouse, Freight Basis storehouse and the electronic lock password of electrically programmable, permission is gone into the toll number storehouse with the registration in advance of professional toll number, the user is played the toll telephone number of the lock restriction of unregistered number.4 * 4 keyboards are set to be edited toll number storehouse and Freight Basis storehouse.

This device does not change the function of original telephone set, allows the user that the toll number storehouse is gone in business telephone registration in advance, is convenient to user's number of lock management; Simultaneously also be convenient to most staff and need use toll telephone at any time because of vocational work.Private telephone is taked charge, and show the charging amount of money, print keep cost order.Because system power supply adopts uninterrupted power supply, guaranteed this device after power failure 40 hours with interior still can operate as normal.

Concrete structure of the present utility model is provided by the following examples and accompanying drawing thereof.

Fig. 1 is the structure calcspar of toll telephone lock taximeter;

Fig. 2 is the circuit diagram of polar protective circuit shown in Figure 1, pulse dialing detector, interrupt signal generator;

Fig. 3 be toll telephone lock taximeter shown in Figure 1 editor, charge print, the electronic lock workflow diagram;

Fig. 4 is that toll telephone lock taximeter shown in Figure 1 detects telephone signaling in real time, and the flow chart that handles accordingly.

Illustrate in greater detail details of the present utility model and working condition below with reference to accompanying drawings.

Toll telephone lock taximeter shown in Fig. 1 is made up of telephone signaling detection module 1, computer module 2, terminal module 3, relay 19, system power supply 17.Wherein the circuit shown in each calcspar is prior art, and they are the bus mode connection of computer routinely.Inventive point is its composite entity.

Telephone signaling detection module 1 is carried out decoder 6, double voice multi-frequency receiver 7 and interrupt signal generator 8 and is formed by polar protective circuit 4, pulse dialing detector 5, calling.Wherein polar protective circuit 4 guarantees to take from the polarity of telephone wire detection signal.Pulse dialing detector 5 detects pulse signal.Calling is carried out decoder 6 and is selected NE5900 for use, detects dual-tone dialing, ring, ring-back, busy tone telephone signaling in real time.Double voice multi-frequency receiver 7 is selected MT8870 for use, detects the DTMF pulsing number in real time.Interrupt signal generator 8 is selected GAL16V8 for use, is used for that composite signal produces INT0, the INT1 interrupt signal is sent CPU.

Computer module 2 is made up of central processing unit 9, read-only memory 10, reading writing memory 11,12.Its central processing unit 9 adopts the 80C31 single-chip microcomputer to make CPU, carries out Business Processing and system monitor.Read-only memory 10 adopts ultraviolet erasing electrically programmable memory 27C64, storage system monitoring, business processing program, Edit Password.Reading writing memory 11 adopts electricity to wipe the reading writing memory 2864 of electrically programmable, 448 toll numbers (can be deposited in storage toll number storehouse, long 16 of each number, every accounts for 4bit, each number accounts for 8 bytes), Freight Basis storehouse and electronic lock password.Reading writing memory 12 adopts memory 6264, as the operational data buffering area of central processing unit 9.

Terminal module 3 is made up of 4 * 4 keyboards 13, mini-printer 14, calendar clock circuit 15 and LCD display 16.Wherein 4 * 4 keyboards 13 are made up of key encoder 74C922 and film button dish, as the media of user's input information.Mini-printer 14 is selected TPuP-40A for use, as printing keep cost order (comprising contents such as toll number, conversation date, air time, charging), printing toll number, Freight Basis inventory.Calendar clock circuit 15 adopts MSM5832, for system provides time, date.LCD display 16 adopts EDM2002B, as showing online phone information (as toll number, telephone signaling etc.), explicit user edit file, the charge accounting amount of money and clock.

Relay 19 is conventional relay, contains a pair of normally-closed contact, and normally-closed contact is connected with telephone wire, by system drive normally-closed contact is disconnected, thereby disconnects the telephone wire of telephone set 18 and switched telephone network 20, realizes automatic hand-up.

System power supply 17 is the UPS uninterrupted power supply, guarantee this device after power failure 40 hours with interior still can operate as normal.

Shown in Figure 2 is the circuit diagram of polar protective circuit 4, pulse dialing detector 5, interrupt signal generator 8.In the polar protective circuit 4, L ₁, L ₂Be connected to telephone wire, the signal of telecommunication is through bridge rectifier block D ₁, divider resistance R ₂, R ₃, voltage-stabiliser tube D ₂, guarantee to detect signal of telecommunication polarity and magnitude of voltage.In the pulse dialing detector 5, the signal of telecommunication is through voltage comparator U _1B, inverter U _2BDetect dial impulse P, the signal of telecommunication is through voltage comparator U _1A, inverter U _2ADetect signaling pulse HY.U wherein _1B, U _1ACan select model for use is LM ₃₃₉Voltage comparator; UE _2BAnd U _2ACan select model for use is the inverter of 74HC14.In the interrupt signal generator 8, T is that double voice multi-frequency receiver 7 data useful signals, DV carry out decoder 6 data useful signals for calling out, KEY is the data useful signal of 4 * 4 keyboards 13 and 4,5,6,2,3 pin that P, HY send into integrated circuit GAL16V8 respectively.16VB is that the PCD circuit can be selected GAL16V8 for use, 19, the INT0 of 18 pin, the INT1 interrupt signal for sending to central processing unit 9.T, DV, HY, P, KEY signal are also delivered to the 80C31 single-chip processor i/o mouth of central processing unit 9 and are made to interrupt identifying information.

Fig. 3, shown in Figure 4 be the groundwork process of toll telephone lock taximeter, be achieved as follows work in conjunction with Fig. 1, Fig. 2.

The lock course of work:

Detect telephone signaling in real time by circuit 4,5,6,7,8, produce interrupt signal and corresponding data.CPU responds interruption, finishes analysis, discerns various telephone signalings on (as off-hook, dialing, ring-back, busy tone, conversation, on-hook, " R " key etc.) by system monitoring, tupe (telephone loop signaling mode), and handle accordingly.After CPU receives the toll number that telephone set 18 sends, just the long-distance call number storehouse among the retrieval and inquisition EEPROM, if find registered this long-distance call number in the storehouse, then allow telephone set to continue to call out, otherwise disconnect the telephone wire of telephone set 18 and switched telephone network 20 by system drive relay 19, realize automatic hand-up, make the calling can not be successful.If key in advance the password that agreement is opened electronic lock, at this moment number restriction of the lock of this device that then disappears temporarily just can play toll telephone arbitrarily, after the on-hook 30 second automatic blocking.

The charging course of work:

At first key in the electronic lock password of agreement in advance, select charging way according to Fig. 3 menu then.When this device was in charging printing permission, lock number restriction temporarily disappeared.

In the storehouse of selecting to check numbers during unregistered number telephone charging way, after CPU receives toll number and receives conversation signal, just the long-distance call number storehouse among the retrieval and inquisition EEPROM, if do not find this long-distance call number in the storehouse, just from calendar clock circuit 15, take out call start time, from EEPROM, get Freight Basis (the domestic and international ground area code in the Freight Basis storehouse is by China's toll telephone encoding scheme identification) simultaneously.After CPU receives on-hook signal, get the end of conversation time from calendar clock circuit 15, settlement amounts shows on LCD screen 16 then, and prints the list that charges by mini-printer 14.

When selecting all toll telephones are chargeed, the long-distance call number storehouse among the retrieval and inquisition EEPROM not then, other is the same.

The editing process:

At first key in Edit Password (this is the highest password of system, and only suitable one or two people grasp), select content of edit according to Fig. 3 menu then.

Increase new digit:, deposit long-distance call number storehouse behind the end of input automatically in, and can print its content on demand by a professional toll number that key entry increases.

Delete old number: by a professional toll number of key entry deletion, the relevant number behind the end of input in the automatic deletion toll number storehouse, and can print its content on demand.

Revise Freight Basis: at first key in toll telephone ground area code, import per minute charging unit price then, after modification finishes, will revise content automatically and deposit basis of calculation storehouse in, and can print its content on demand.

Revise the electronic lock password: key in new electronic lock password, after obtaining affirmation, deposit among the EEPROM automatically, and can show its content on demand.

Automatically write down the relevant statistics process of toll telephone:

The number of times that monthly automatic statistic record is made a long-distance call, total air time, total cost (print and charge and non-printing charging statistic of classification); 20 long, higher toll number, air time and expenses of expense of (non-printing charging) air time of monthly automatic statistic record.Press Fig. 3 menu selective printing statistics, then print the relevant statistics of automatic record toll telephone.

Claims (3)

1, a kind of toll telephone lock taximeter comprises telephone signaling detection module (1), computer module (2), terminal module (3), relay (19) and system power supply (17), it is characterized in that:

The electricity that computer module (2) is provided with the ultraviolet erasing electrically programmable read-only memory (10) of storage system monitoring, business processing program, Edit Password and storage toll number storehouse, Freight Basis storehouse and electronic lock password is wiped the reading writing memory (11) of electrically programmable;

Terminal module (3) is provided with 4 * 4 keyboards (13) that toll number storehouse and Freight Basis storehouse are edited;

Relay (19) contains normally-closed contact, and normally-closed contact is connected with telephone wire, disconnects normally-closed contact by system drive relay (19), realizes automatic hand-up to disconnect telephone wire;

The bus mode that telephone signaling detection module (1), computer module (2), terminal module (3), relay (19) and system power supply (17) are pressed computer connects.

2, toll telephone lock taximeter according to claim 1, it is characterized in that interrupt signal generator (8) adopts integrated circuit GAL16V8, the data useful signal T of double voice multi-frequency receiver (7), the data useful signal DV of decoder (6) is carried out in calling, the data useful signal KEY and the P of input keyboard (13), HY sends into 4 of integrated circuit GAL16V8 respectively, 5,6,2,3 pin, also send into simultaneously the input of central processing unit (9), delivery outlet makes to interrupt identifying information, 19 of this integrated circuit, 18 pin send interrupt signal INT0 to central processing unit (9), INT1.

3, toll telephone lock taximeter according to claim 1 is characterized in that: electricity is wiped the reading writing memory (11) of electrically programmable can select 2864 for use.

Images