KR100320229B1 - Telephone control apparatus - Google Patents

Abstract

The present invention sets its own code number (call number) and selects the receiving code (call number) when the call number is spoken from the central command center and calls the telephone signal connected to the telephone when it matches the code number. When you want to talk to an external phone, you can send a set (promised) call number (the code) by simply holding the handset of the phone.

Significantly reduce equipment costs by connecting multiple sets of terminals consisting of a command device 10 and a phone in parallel to a 2W loop tip ring connected to the central command room 1 Each command device 10 can be assigned a unique call number to prevent duplicate calls, and by setting the pulse width of each call code to be constant, minimizing the error rate while making indiscriminate calls from the outside. Prevent the central command system to operate smoothly,

It displays each function and status visually and also displays them acoustically, such as a ring, so that they can be operated more efficiently by zooming.

Not only transmission and reception within the central command system, but also communication with the outside can be easily performed without interference from the central command room.

Description

Command phone apparatus {Telephone control apparatus}

The present invention relates to a command telephone apparatus for determining a call number from a central command room and operating a terminal telephone connected thereto.

In more detail,

Set your own code number (call number) and select the receiving code (call number) when the call number is generated from the central command center, and send the call signal to the telephone connected to it when it matches your code number. When you want to talk to an external telephone, you can make a call and send a preset (promised) call number (that code) just by holding the handset of the telephone.

Although the technical idea is different from the command telephone apparatus according to the present invention, the general switching system may be similar. The general switching system is provided by installing a plurality of terminal changers using respective trunk lines at a switchboard which is a central control unit. If a call is received from outside, the call will be answered at the switchboard and the switch will be connected at the request of an outsider. However, it was not only that the switchboard itself had a command function, but also that the switchboard itself had a command function and had no function except to control and control the call from outside or outside.

As a simple improvement of such a simple function, a method of controlling the use of a trunk line is known in Korea, especially in the registered No. 116281 private exchange system.

When dialing before the set time between digits received from subscribers is exceeded, it is determined whether to use CO line by international, long distance, local telephone, etc. If the set time between digits is exceeded, the received digit number is registered. In the case of a CO line control number, the circuit was blocked. However, this method blocks the use of telephones by the subscribers indiscriminately, so they could not expect any other characteristics except to control the use of telephones.

It is an object of the present invention to provide a command telephone apparatus having a completely different concept from an existing exchange apparatus or private exchange system.

The present invention assigns a different unique code (number) for each device so that when a call number generated from the central command center matches the assigned unique code, a call signal can be output and received to a telephone connected to the device. It is an object of the present invention to provide a command telephone apparatus in which a call number (corresponding code) can be automatically transmitted by lifting a handset of a telephone connected to the apparatus.

Another object of the present invention is to enable the transmission and reception by adopting DTMF (Dual Tone Multi Freguency) method to enable the use of 2W E / M communication path using a 2W loop line and high impedance (Line Impedance) It is configured to be suitable for Multi Drop.

The purpose of the present invention is to provide a command telephone device that minimizes an error rate by specifying a pulse width of each call code while preventing a duplicate call by assigning a unique number to each device.

Another object of the present invention,

The purpose of the present invention is to provide a command telephone device capable of visually displaying the internal data and functions of each subordinate device and the status of transmission and reception with the central command room.

The above and other objects of the present invention,

In being able to transmit and receive by the normal DTMF method,

A central processing unit (11) for inputting a unique call number and controlling all functions such as call number selection and response;

A line matching unit 12, which is composed of a matching transformer for matching and an OP AMP for connecting a tip ring and an electronic circuit,

A matrix switching unit 13 connected to the device unit of each function to control each signal;

Automatic gain control unit 14 for outputting the voice and the call number received through the line constant pressure unit 12 in a constant size,

A transceiving exchange terminal unit 15 for converting the received call number into a digital signal and outputting the signal to the central processing unit 11 and generating a DTMF signal by a command of the central processing unit 11;

A frequency converter 16 which receives the call number output from the automatic gain control unit 14 and combines the transmission signal into a digital code and outputs it to the central processing unit 11;

A telephone connection control unit 20 which controls a general telephone for terminal connection and is operated under a predetermined line resistance as a 2W loop method;

LED display operation unit 17 to visually display the internal data and each function of the own device,

It is achieved by the command telephone apparatus 1, characterized in that the power supply unit 30 is configured to change the input AC voltage into a DC voltage, charge the battery, and convert the supplied AC voltage into a voltage suitable for each functional unit.

1 is an exemplary view showing an installation state of the command telephone apparatus according to the present invention

2 is a block diagram of a command telephone apparatus according to the present invention;

Figure 3 is a block diagram showing an extracting control unit to the command telephone apparatus according to the present invention

※ Explanation of symbols for main part of drawing.

1: central command room 10: command phone device

11: central processing unit 12: line matching unit

13: matrix switching unit 14: automatic gain control unit

15: transceiver exchange terminal 16: frequency converter

17: LED display operation unit 20: telephone connection control unit

30: power supply

The above and other objects and features of the present invention will be more clearly understood by the following detailed description based on the accompanying drawings.

1 to 3 is an exemplary view showing a specific embodiment of the command telephone apparatus 1 according to the present invention,

1 is an exemplary view showing a state in which the command telephone apparatus 10 according to the present invention is installed in the central command system, Figure 2 is a block diagram showing the function of the command telephone apparatus 10 in detail, Figure 3 is a command telephone A block diagram showing a connection controller in the apparatus 10 is shown.

The command telephone apparatus 10 according to the present invention includes a central processing unit 11, a line matching unit 12, a metric switching unit 13, an automatic gain control unit 14, transmission and reception as shown in FIG. It consists of an exchange terminal section 15, a frequency changing section 16, an LED display operating section 17 and a power supply section 30.

The line matching unit (12: Impedance Matching Hybrid) is used to match (connect) an analog telephone ring with an electronic circuit. A hybrid trans and an amplifier for hybrid (OP AMP) Made up of

The TIP Ring is connected to the input side of the hybrid transformer and the OPAMP is connected to the output side through the transmission and reception line. The voice and the auto gain control unit 14 described later in the amplifier OPAMP are specifically described. The call number was output and the information was transmitted and received by a line separate from the matrix switch 13.

Hybrid transformers use 1.2KΩ (600 ohms) to ensure that the telephone lines and electronic circuits are optimally matched.

The hybrid amplifier (OP AMP) adjusts the received voice and call number to a certain size by using a microcomputer (IC) and shapes the distorted waveform into a sinusoidal waveform. And the connection part with the audio input circuit of the central processing unit 11 (CPU) outputs a reference level to measure the reception level, and attenuates a circuit to reduce the amount of transmission returned. The transmitter and receiver are equipped with a level and a volume for adjustment so that the level can be adjusted.

The auto gain control unit 14 outputs a voice and a call number input (received) from the line matching unit 12 in a constant size. In particular, the reception level is received within a predetermined range (level), the output is output at a specific level, and has a predetermined frequency range. Preferably, the reception level is -40dbm to + 7dbm: the output level is + 3dbm, and the frequency band is It is maintained by the characteristic of 300HZ-3400HZ.

Transmit / receive exchange terminal (15: Dual Tone Mult Freguency) receives the call number output from the automatic gain control unit 14, converts it into a digital signal, outputs it to the central processing unit 11, and the central processing unit. The instruction (command) in (11) generates a DTMF signal.

The following Table 1a shows A / D and D / A conversion table, that is, frequency configuration table by DTMF signal digit type. ) And 5 high frequency groups (High Freguency), each one selected from 0 to 9 digits and special digits of *, #, A, B, C, D, etc.

D ₀ , D ₁ , D ₂ , and D ₃ are connected to the DATA pin of the central processing unit 11.

In particular, the width of each frequency (call code) of low frequency and high frequency is specifically limited to detect only the call number from the operating device and ignore the call number from other phones. For example, the width of each frequency (call code) is 50. If the frequency range of the call number is less than or equal to 50 kHz, this signal is to be ignored.

Table 1a

A / D and D / A Conversion Table

Low Frequency (F _LOW ) High Frequency (F _HIGH ) Digit D3 D2 D1 DD 697 1209 One 0 0 0 One 697 1326 2 0 0 One 0 697 1447 3 0 0 One One 770 1209 4 0 One 0 0 770 1336 5 0 One 0 One 770 1447 6 0 One One 0 852 1209 7 0 One One One 852 1336 8 One 0 0 0 852 1447 9 One 0 0 One 941 1336 0 One 0 One 0 941 1209 * One 0 One One 1941 1447 # One One 0 0 697 1663 A One One 0 One 770 1663 B One One One 0 852 1663 C One One One One 941 1663 D 0 0 0 0

The combined state of the DTMF (Duel Tone Multi Freguency) according to Table 1a is shown in Table 1b.

Table 1b

DTMF Combination Table

Digit Low Frequency F ( _LOW ) High Frequency F ( _HIGH ) One 697 1209 2 697 1326 3 697 1447 4 770 1209 5 770 1336 6 770 1447 7 852 1209 8 852 1336 9 852 1447 0 941 1336 * 941 1209 # 1941 1447 A 697 1663 B 770 1663 C 852 1663 D 941 1663

A frequency shifting unit (16: frequency shift keying controller) transmits a line transmission signal by combining a digital code, unlike DTMF.

The frequency used is 1200HZ in O (Low) and 2200HZ in 1 (High), and the received FSK signal is analyzed and transmitted to the central processing unit 11.

The telephone connection controller 20 controls the general telephone for the terminal to be connected by adopting the 2W loop method, and operates when the line resistance is less than a predetermined value, that is, 1.2 Ω or less.

3 is a block diagram of the telephone connection control unit 20,

The tip and ring driving unit 23 connected to the phone through the tip ring receives the intermittent power by the power intermittent unit 21 and the ring control unit 22 receives the ringing ring. The receiving telephone unit 24 receives the intermittent transmission (VX) and reception (VR) states.

The power intermittent unit 21 supplied with the battery voltage (VBAT: -48 V) is inputted after the PD power supply of PD / Ring is determined by the control of the central processing unit 11.

Ring control unit 22: 20HZ (RV), DC90V (DCRI) is input, the transmission and reception telephone unit 24 transmits using 2 and 4 lines (2 To 4 wire conversion) (VX) And receive (VR).

In addition, the loop supervision (26: Loop Supervision) that inputs the reference voltage (VREE) and the ring recovery signal (CAP: Ring Trip Capacitor) and outputs the telephone hook detection signal is a constant current supply unit (25: Costant Corrent Feed). Will be cracked down.

LED display operation unit 17 is to visually display the internal data and functions of the magnetic device is composed of an LED drive unit 18 for driving each function and an LED display unit 19 for displaying each function,

As a display function,

Call display state that indicates that the call is in progress when the own phone is OFF or Hook state,

Charge display state that displays the operating status of the internal charger,

Check mark status to check its own function,

Fault indication state that indicates when an error occurs in the internal circuit and function,

The power supply display status that indicates the power supply status is, for example.

In particular, in displaying various functions, for example,

For example, in displaying the reception level of -40㏈ ~ + 5㏈, -5㏈ is indicated as 'Ld-05',

In displaying AC-DC voltage, + 15.5V is indicated as '15 .5 '.

It shows the charging voltage of the battery (Battery) 13.8V include those which to show as "13.8".

In addition, when calling the child device in the central command room, in displaying the call number of the child device by LED, each function can be displayed as shown in Table 2.

Table 2.

function LED indication General call 1-01 (device 1) call Japanese call 1-00 Japanese call response request 1-41 Call answering wait signal 2-01 answer 3-01 Shut Down Phone 4-01 Operating device shutdown 5-00 exam call 6-01 answer 6-41

As shown in Table 2 above, in displaying each function on the LED display unit 19, the number displayed in front of the bar (-) indicates the function promised in advance and the number displayed behind the bar (-). Allows you to display the number of each device (telephone). For example, if 1-01 is displayed on the LED display, it indicates that the device 1 is a general call. If 1-20 is displayed, it indicates that the device 20 is a general call.

If 3-01 is displayed on the LED display, it indicates the response of subordinate device 1 (telephone). If 4-17 is indicated on the LED display, it indicates the end of the phone on sub 17 device (telephone).

However, in the call (symbol 1) function, the indication 1-00 indicates the function to call all the own devices (telephones) at once, and the indication 1-41 indicates the response to the integrated call of all the own devices (telephones). In the call (symbol 6) function, the display of 6-01 indicates the function of the test call, and the display of 6-41 indicates the state (function) of test response to all the own devices (telephones). Can be set.

It is noted that the LED display according to each function as described above is not limited to the above embodiment but can be arbitrarily set and displayed.

The central processing unit 11 controls all functions of the own device, that is, the command telephone device 10. As the control function,

Measuring the input voltage, charging voltage and line entry level, and displaying the measured values on the LED display unit 19, respectively;

Identify the DTMF signal and combine the response signals, but set the interval (length) of the pulse (plus) among each call number at a predetermined interval (for example, 50 ms) and input only the call number input at the set interval (length). Receives a signal that is input above or below the set interval (length) and processes it as an error to exclude it from the signal condition,

Selecting a signal input from the frequency converter 16 and generating a response signal for the input signal;

Monitoring and control function of the telephone connection control unit 20 to ON-hook and OFF-hook the telephone, and to generate the ring (20㎐) and the ring (interrupt) (1 second in 1 second).

Functions to control the matrix switching unit 13 to turn off the phone, send a standby signal, and control the reception and transmission of the test code as a condition selection function, and to control the LED driver 18. Will be implemented.

The power supply unit 30 is supplied by lowering the input voltage by the AC / DC converter to a voltage suitable for each characteristic of the function,

The AC / DC converter reduces the input voltage of AC85V ~ 245V (60HZ) to the output voltage of DC15V and the output current of DC3A.

The battery charger charges the nickel-hydrogen battery with a charging voltage of DC 13.8V to 14.8V and a maximum current of 2A for about 8 hours by the Fast Charge (bq 2003) method, but operates at DC + 5V.

Analog 5V (Analog 5V) is also a voltage for operating the audio (IC) and amplifier (OP AMP) for audio and output capacity of 1A,

Analog-5V (Analog-5V) is also used to operate the audio IC and amplifier (OP AMP), the output capacity is 0.5A,

Digital 5V (Digital 5V) is a voltage used to operate the central processing unit 11 and its peripheral circuit and to operate the LED driving unit 18 and the LED display unit 19, so that the output capacity is 1.5A.

In addition, -48V is used for the telephone and the telephone connection control unit 20 of the general telephone, and + 90V is the signal (Bell) of the telephone based on the signal ring of the general telephone and the 20HZ ratio of the central processing unit 11. Is used to operate

+ 9V is used as the operating voltage of the automatic gain control unit 14.

The operation relationship of the command telephone apparatus 10 configured as described above will be described.

The command telephone apparatus 10 according to the present invention is installed in the front side of each of the telephones (Phones 1 to 40) connected to the central command room 1 in the central command system as shown in FIG. ) Forms terminal portions (Terminal 1 to 40).

That is, a plurality of phones are connected in parallel to a tip ring connected to the command phone device 10, but the command phone device 10 is connected to the tip ring at the front of each phone. Each terminal is connected to a general general telephone (Phone) to the rear side of each command telephone apparatus 10, respectively, to form terminal units (Terminal 1 to n), for example, to form a terminal unit of two digits. From the command telephone apparatus 10 of the terminal 1, the serial number is sequentially assigned to 01, 02, 03, 04 ... 40, and the like.

Reception of the call number from the central command room 1 is performed as follows.

When the call number is output from the central command room 1, the call number is input to each command telephone apparatus 10 of each terminal unit (Terminal 1 to n) through a line (Tip Ring).

When the call number is input, each command telephone apparatus 10 receives the line matching unit 12 and outputs it to the automatic gain control unit 14, and outputs the voice and call number received by the automatic gain control unit 14 as signal processing conditions. And a predetermined size according to the method, and the transmission / reception exchange terminal unit 15 receives the call signal output from the automatic gain control unit 14, converts it into a digital signal, outputs it to the central processing unit 11, and simultaneously converts the frequency. Numeral 16 designates the outgoing signal input from the automatic gain control unit 14 into a digital code and outputs it to the central processing unit 11.

The central processing unit 11 analyzes the digital signal input from the transmission / reception exchange terminal unit 15 and the frequency converter unit 16 and the call number (call number) that is digitally coded and input, and is already set to itself. If the signal (call number) does not match, the response itself is excluded from the source.

On the other hand, if the call number (call number) is consistent with the call number that is already set to them, and outputs it to the telephone access control unit 20 to generate the call number in the own device and at the same time the matrix switching unit 13 Turn on and output to phone (Phone) to ring the bell and at the same time (Tip Ring) to connect.

Therefore, the terminal parts (terminals 1 to n) in which the telephone rings are able to make a call with the central command room by holding the handset and the handset of the telephone, send a response signal, or make a call from the outside through the central command room (1). .

In order to transmit to the telephones of the terminal units 1 to n, when the handset of the telephone is lifted, a signal generated from the telephone is inputted to the central processing unit 11 through the telephone connection unit 20. The central processing unit 11 outputs its call number (call number) and sends it to the central command room 1 through the matrix switching unit 13 and the line matching unit 12.

In this way, the central command room 1 can be called.

Thus, the command telephone apparatus 10 according to the present invention,

It is possible to drastically reduce the equipment cost by connecting a plurality of terminals consisting of the command device 10 and a phone in parallel to a 2W loop tip ring connected to the central command room 1. Each command device 10 is assigned a unique call number to prevent duplicate calls, and by setting a constant pulse width of each call code to minimize the error rate to prevent indiscriminate calls from the outside Can make the central command system run smoothly,

Displays each function and status visually and also displays them acoustically, such as a ring, so that they can be operated more efficiently.

Claims (3)

In being able to transmit and receive by the normal DTMF method, A central processing unit (11) for inputting a unique call number and controlling all functions such as call number selection and response; A line matching unit 12, which is composed of a matching transformer for matching and an OP AMP for connecting a tip ring and an electronic circuit, A matrix switching unit 13 connected to the device unit of each function to control each signal; Automatic gain control unit 14 for outputting the voice and the call number received through the line constant pressure unit 12 in a constant size, A transmission / reception exchange terminal unit 15 for converting the received call number into a digital signal, outputting the signal to the central processing unit 11, and generating a DTMF signal by the command of the central processing unit 11; A frequency converter 16 which receives the call number output from the automatic gain control unit 14 and combines the transmission signal into a digital code and outputs it to the central processing unit 11; A telephone connection control unit 20 which controls a general telephone for terminal connection and is operated under a predetermined line resistance as a 2W loop method; LED display operation unit 17 to visually display the internal data and each function of the own device, Command line device, characterized in that consisting of a power supply unit 30 to convert the input AC voltage to a DC voltage, charge the battery and convert the supplied voltage to a suitable function for each function. The method of claim 1, The transmission / reception exchange terminal unit (15) sets the frequency of the call code to a constant width so as to detect only the call of the set value and ignore the call inside and outside the set value. The method of claim 1, The central processing unit (11) is given a unique call number and inputs a command phone device, characterized in that to output a response signal only to the unique call number to the phone (phone).