KR100904410B1 - Operating method of emergency phone with restrict call - Google Patents

Abstract

The present invention relates to an emergency call operation method of communication restriction, in particular, when the power of the trunk line is supplied from the hook switch unit by the control unit of the emergency telephone and the key button code information is detected from the key button unit to operate the key button routine Key button process; A tone detection process of operating a tone detection routine when it is confirmed by the control unit to detect DTMF code information input from the outside from the DTMF receiving unit; And a hook switch process of operating a hook switch routine when a low level signal is detected from the hook switch unit by the controller. Characterized in that it comprises a configuration, to prevent unauthorized people from connecting to the trunk line unauthorized communication to a third party, unauthorized personnel access the site or remotely to change the recorded emergency telephone number and By changing the key button arrangement, supervision is easy.

Emergency Call, DTMF, Key Button, RAM, ROM, Buffer, Code Information, Routine

Description

Restriction Emergency Telephone Operation Method {OPERATING METHOD OF EMERGENCY PHONE WITH RESTRICT CALL}

The present invention restricts unauthorized trunk line communication of emergency telephones to be installed unattended, and in particular, remotely manages and blocks unauthorized possession and use of trunk line communication lines, restricts arbitrary calls, and remotely records phone numbers and passwords by code information. It relates to a communication restriction emergency telephone operation method to change the.

In general, commercial banks provide automated services outside of business hours because they install an unmanned financial terminal (ATM) for the convenience of customers. As such, an unmanned financial terminal that provides financial services during non-operational time is a very urgent emergency because it is related to money if a failure occurs in the process of withdrawing or depositing, or if it is necessary to check the operation and operation method. It is an emergency phone that notifies managers of this situation and seeks urgent action first. In another example, a number of emergency telephones are installed and operated in automobile tunnels, highways, subway platforms, and the like.

Such emergency telephones can be connected to a fixed manager using a dedicated line to communicate with each other, and a general communication line can be allocated and a selected number of counterparts can be selectively connected and communicated using a function button. In the case of using the electronic leased line, it is connected to a fixed party, so there is an advantage that it can not be occupied and used for other communication in addition to the emergency communication, which is the purpose of installation. In case of the latter, general communication line or public line (PSTN: PUBLIC SWITCHING TELEPHONE NETWORK) is used, so installation time is relatively fast and operation cost is relatively small. Although there is an advantage in connection and communication, there is a problem in that it is occupied by unauthorized persons other than the emergency communication and used for other communication.

Therefore, there is a need to develop a technology to install emergency telephones using trunk lines, to use them when they are operated for designated emergency use, and to prevent unauthorized possession and arbitrary use by unauthorized third parties.

Referring to FIGS. 1 and 2, a method of operating an emergency telephone according to the prior art will be described. The emergency telephone 10 is connected to a public telecommunication network switching center 30 through a trunk line 20. The public telecommunication network switching center 30 confirms the call connection request of the emergency telephone 10 and connects the corresponding communication path occupying the designated counterpart and the trunk line 25 by switching. In this way, the other party to be switched and connected by occupying the trunk line 25 is designated to include a branch of a bank, a computer center, an expense 40, and the like, and the emergency telephone 10 requests a call connection with the designated party. To communicate.

For example, each key button (KEY-BUTTON) provided in the emergency telephone 10, as shown in the accompanying FIG. 2 is assigned with a designated party to be connected, if you want to communicate with the desired party, the corresponding key button Select and input, so the public communication network switching center 30 checks and switches to set the corresponding communication path is connected and communication is in progress.

The emergency telephone operating method of the prior art has the advantage of designating the counterpart for emergency communication within a certain range and assigning the counterpart to each of the provided buttons, and easily connecting and communicating by inputting the corresponding button when communicating.

However, there has been a problem that the communication path of the trunk line is illegally occupied and used illegally by a third party.

In addition, it is necessary to remotely readjust the telephone numbers assigned to the emergency telephone 10 and fixedly recorded.

The present invention prevents unauthorized use of emergency telephones using trunk lines for unauthorized use for purposes other than non-emergency, in particular, by modifying emergency telephone numbers or changing secret codes by remotely accessing keys and arranging key buttons. Its purpose is to provide a means of operating a telecommunications limited emergency telephone.

The present invention devised to achieve the above object, when the power supply of the trunk line is supplied from the hook switch unit by the control unit of the emergency telephone, and the key code code information is detected from the key button unit, the numeric code information is first input. Dial the emergency number recorded in the ROM address of the numeric code, and execute the designated frame when the code information of * and # is entered, and enter the standby mode when the other code is entered into the set. Key button process, and by the control unit detects DTMF code information externally input from the DTMF receiving unit. First, when numeric code information is input, DTMF is input from the outside to occupy the trunk line and prevent the call of the other party. When the code information of * and # is inputted, the emergency telephone is remotely controlled. Check if the tone detection process proceeds to the standby state and if the trunk line voltage used as the operating voltage is detected at the low level by the control unit by the control unit and stops communication when the trunk line voltage is detected at the low level more than two times within a predetermined time. It can be made including a hookswitch process for operating the hookswitch routine.

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The present invention of the configuration as described above has the convenience of use to prevent other people not allowed to access the emergency telephone installed in an unattended state to communicate with a third party by unauthorized access to the trunk line.

In addition, the present invention of the configuration as described above has an industrial use effect that is easy to monitor and supervise, because the authorized technician is connected to the emergency telephone on-site or remotely to change the recorded emergency telephone number and the key button arrangement.

Hereinafter, by the present invention of the configuration as described above, a communication restriction emergency telephone operation method will be described in detail with reference to the accompanying drawings.

3 is a functional configuration diagram of a communication limited emergency telephone according to the present invention, FIG. 4 is a circuit diagram of a communication limited emergency telephone according to the present invention, and FIG. 5 is a communication according to the present invention. Figure 6 is a flow chart of the emergency emergency telephone operating method, Figure 6 is a flow chart of the key button routine operation of the communication emergency emergency telephone operation method according to the present invention, Figure 7 is a code routine operation flowchart of the communication emergency emergency telephone operation method according to the present invention, 8 is a flowchart illustrating a warning routine operation of the communication limit emergency telephone operating method according to the present invention, FIG. 9 is a flowchart of a tone detection routine operation of the communication limit emergency telephone operating method according to the present invention, and FIG. 10 is a communication restriction emergency according to the present invention. Hook switch routine operation flowchart of the telephone operating method, Figure 11 is a tone generation routine of the emergency call operation method restricted communication according to the present invention. Fig. 12 is a configuration diagram of code information of a method for operating a communication emergency limit telephone according to the present invention, and Fig. 13 is an exemplary view of signals detected by a hook switch part of the communication emergency emergency telephone according to the present invention. Is an explanatory view of the arrangement state of the key button unit of the communication limit emergency telephone according to the present invention, Figure 15 is an exemplary view of the communication limit emergency telephone according to the present invention.

In describing an example of the present invention, description is omitted for well-known technical contents that are not directly related to the present invention, and thus clearly conveys the gist of the present invention without obscuring the gist of the present invention.

Referring to Figure 3, when describing the emergency call according to the present invention, the communication circuit unit 100, the control unit 110, the hook switch unit 120, audio unit 130, key button unit 140, memory unit ( 150), the DTMF generator 160, and the DTMF receiver 170 are configured.

3 and 4, the emergency telephone according to the present invention will be described in detail. Each of the functional units including the control unit 110 is supplied from a CO line to which the hook switch unit 120 is connected. It is operated with the operating voltage to rectify and supply by the configuration of D1, D2, D3, D4.

The control unit 110 checks whether the hook switch unit 120 generates a hook off signal and monitors the operating state of each functional unit, and code information of the key button selected from the key button unit 140 is input. do. If it is determined that the code information is input, the controller 110 analyzes the input code information and checks whether the code information is 0 to 9 or code information of * and #.

When it is confirmed by the numeric code information in the analysis of the control unit 110, the emergency telephone number recorded in the address designated by the numeric code information is read from the ROM (ROM) constituting the memory unit 150. At this time, the controller 110 initializes the address information of the RAM and the ROM constituting the memory unit 150, sets the address information to 0, and writes the first digit of the address designated by the input numeric code information. Read the recorded emergency phone number and write it to the first address of RAM.

Since the controller 110 drives the counter and increments 1, the controller 110 increments the addresses of the RAM and the ROM one by one and checks whether the counted current value of the counter is 24. To check whether the counter's counted value is 24, the maximum value of the digit or address assigned to the ROM and RAM is 24. That is, up to 24 numbers can be recorded in one emergency telephone number, which is a digit size of a memory allocated to record a telephone number, an area code, a trunk line call number and an extension number of a private exchange. So count up to 24 only.

In other words, the emergency telephone number assigned and recorded in the code information of the number selected and input from the key button unit 140 is the address information of the ROM, and the emergency telephone number is composed of up to 24 digits in the selected ROM address. Is recorded. The control unit 110 reads emergency phone numbers recorded in the ROM one by one, and records them previously in the RAM in the order of reading.

If the previous recording is completed in order from the designated address of the RAM in order from the designated address of the ROM by the controller 110 in order, the counter value and the RAM address value are respectively initialized to 0 and recorded in the RAM. Record the emergency number one by one in the data buffer (DATA_BUFF).

The control unit 110 analyzes the emergency telephone numbers previously recorded in the data buffer one by one and checks whether code information of # (OXOC) and * (OXOB) are recorded, and tones only when numeric code information is recorded. Operate the generation routine.

That is, since the emergency phone number is made up only of numbers, if code information by * and # other than numbers is recorded, dialing is terminated or it is not an emergency phone number. Do not allow communication.

The tone generation routine previously records code information recorded in the data buffer by the controller 110 in the DTMF generator 160, and enables and controls the DTMF generator 160 to the ACTIVE state. In this case, the tone signal of the DTMF corresponding to the recorded code information is generated.

DMF (DUAL TONE MULTI FREQUENCY) is a tone signal generated by a combination of low frequency group 697 Hz, 770 Hz, 852 Hz, 941 Hz, and high frequency group 1209 Hz, 1336 Hz, 1447 Hz, and 1633 Hz. And # respectively.

The controller 110 switches the counting cycle time of the built-in timer from the slow mode of 0.1 second (100 ms) to the fast mode of 0.01 second (10 ms), and checks whether the timer has reached 80 milliseconds (ms). The reason is that each digit of the telephone number must be generated as a tone signal by DTMF, and the generated tone signal can be recognized by the exchange if it lasts for about 80 milliseconds.

As such, the DTMF generating unit 160 generates the code information previously recorded from the data buffer for the activated 80 ms time.

When the controller 110 confirms that the timer counts the time of 80 ms, the DTMF generator 160 is set to disable by controlling the disable, so that the tone signal of the code information is not generated, and the timer Initialize the value to 0, run it again to check if 100 ms is counted, and if 100 ms is counted, set the timer to change from fast mode to slow mode, and reset the timer to 0. .

The control unit 110 repeats the above process for each digit of the emergency telephone number, that is, if each digit is analyzed and proceeds to * or #, the process proceeds to the end or standby state, and if the number includes 80 The corresponding DTMF tone signal is generated for ms time, blanked for 100 ms time, and the same process for the next digit is repeated until the emergency number is finished.

The controller 110 transmits the DTMF tone signal of the emergency telephone number generated by the DTMF generator 160 through the audio unit 130 and the hook switch unit 120 to the trunk line through the same process. It is supplied to, so dialing is performed.

It connects to an emergency contact number connected by such dialing, for example, a branch of a bank, a computer center, a security guard, or the like, and communicates with a handset having a communication circuit unit 100.

In addition, the controller 110 detects a hook on signal from the hook switch unit 120, and if it is determined that the tone signal by the DTMF is input through the trunk line, the controller 110 operates a tone detection routine.

As such, when the hook switch unit 120 generates the hook-on signal, the tone signal of the DTMF is input, the hook switch unit 120 is remotely inputted. In this case, the hook switch unit 120 is limited to the case of the code input. In other words, it is the case of remotely initializing and clearing the emergency number recorded in the emergency telephone, entering a new emergency telephone number, setting a delay time, changing a password, or changing a key button arrangement. This code entry is handled either by the operator allowed in the field or by calling an emergency phone from a remote location and entering the code combination.

Therefore, since the control unit 110 provides and analyzes the tone signal of the DTMF input in the hook-on state to the DTMF receiving unit 170, it checks whether the code information is 0 to 9 or code information of * and #.

If confirmed by the numeric code information from 0 to 9 by the check of the control unit 110, because the unauthorized occupation of the trunk line communication, proceeds to the warning routine to block the communication, if confirmed with the code information of * and #, It is determined that the connected operator is connected and proceeds to the code routine.

The warning routine outputs a DTMF tone signal set to B tone of DTMF, and also outputs a DTMF tone signal set to C tone, and continuously generates a warning signal of about 1.5 KHz to 2 KHz. That is, B tones and C tones are DTMF tone signals corresponding to * and # and DTMF tone signals are not used in telephone numbers. Therefore, no dialing is performed, and a warning signal of 1.5 to 2 KHz corresponds to a high range among audible signals. As the beeping sound is continuously generated, it forms a condition that communication is not possible. This warning routine continues until the connection is confirmed to be blocked by the control unit 110, that is, until the DTMF tone signal is no longer input in the hook-on state.

The code routine is operated when the code information of * or # is input by the control unit 110. The code routine is first recorded in the allocated buffer of the memory unit, and the initial 6 is written using the count. Enter and record until.

When code information of * and # can be input in this way, the tone signal of the DTMF is input in the hook-on state, and the code information is input by the key button selected from the key button unit in the hook-off state.

The control unit 110 analyzes the six pieces of code information that is initially input, is a combination of code information for initializing an emergency telephone number recorded in an emergency telephone, a combination of code information for inputting a new emergency telephone number, and a code for setting a delay time. Check whether the information is a combination of information, a combination of code information for changing a password, or a combination of code information for changing and setting an arrangement of a key button part.

Referring to FIG. 12 in detail, when the six code information initially input by the controller 110 is confirmed in the order of "*, *, *, *, *, *," It is judged by the command signal to delete and initialize all recorded emergency phone numbers, and analyzes the code information inputted from the 7th to 11th to check whether the judgment is correct and the "*, *, *, #, #" If it is confirmed by the input by the order, it initializes and deletes all the recorded emergency telephone numbers.

As another example, if the initial code information is confirmed in the order of "*, x, x, x, x, X", check that the password of XXXX is correct, and if the password is correct, Judging by the command to input a new emergency phone number in the address, it analyzes the code information input from the 7th to 11th, detects the emergency phone number, and records it in the address of the key button designated by X.

Here, the lowercase xxxx is a four-digit password, and a new telephone number can be recorded as an emergency telephone number only if the passwords match.

In addition, the sixth capital letter X indicates the address where the emergency number is entered and is stored. The seventh code information indicates that the newly entered emergency number is started. The code is entered as an emergency phone number, and the last # code information input indicates that the emergency phone number is completed. That is, the numeric code information entered between the # code information and the # code information is entered as an emergency phone number, which can be 112, 119, a bank branch, a computer center, an expense, etc., and fixed digits. Since it cannot be assigned, it is assumed that the corresponding digit is terminated when the # code information is input at the end.

As another example, when seven pieces of code information to be initially input are confirmed in the order of "*, x, x, x, x, *, number", the delay time of 1.7 seconds and the number Add a delay of 100 milliseconds (ms). In other words, if 1 is input to the "number", 1.7 seconds + 0.1 second, so a delay time is given for 1.8 seconds, and if 3 is input to "number", 1.7 seconds + 0.3 second is a delay time for 2 seconds.

Also, as another example, when the six pieces of code information that are initially input in the order of "#, *, 5, 5, 5, x" are determined as a command signal for changing the password, the sixth to ninth Set and record the four codes entered as a password.

The reason why the code information of the number 5 from the third to the fifth is continuously input will be described in detail later with reference to FIG. 14, but the number is always located at the center even if the key button arrangement of the key button is changed to any state. Don't get confused.

The lowercase letter x in the attached FIG. 12 consecutive four times means a password.

Also, as another example, when the six pieces of code information that are initially input in the order of "#, *, 5, 5, 5, *" are determined as a control command for arbitrarily changing the key button arrangement of the key button unit, After entering the seventh #, make it the position 1 in the eighth number.

Referring to FIG. 14, the arrangement of key buttons of a general telephone is shown in the upper left corner, which is a reference for a command signal for changing and designating a key button arrangement.

That is, when the controller 110 determines that the key button arrangement is a command signal for changing and setting the key information, when the information of 1 is input to the eighth input code information, the control unit 110 places 1 at the position 1 of the general key button array. The command signal is to use the existing general key button array as it is. If the information of 3 is inputted to the 8th input code information, the command signal is arranged at the number 3 position of the general key button array. Arranged in the same state as the button array. In addition, when the information of 9 is input to the eighth input code information, the command signal is arranged to arrange 1 at the ninth position of the general key button array and is arranged in the same state as the key button array at the lower left. When the information of 7 is input to the code information to be input, the command signal to arrange 1 at the number 7 position of the general key button array is arranged in the same state as the key button array at the lower right.

Referring again to Figure 14, it can be seen that the position of the number 5 is always the center, using this feature is applied as a code combination for setting password change and key button arrangement change.

The control unit 110 checks whether a low level signal is detected from the hook switch unit 120 in the state of monitoring each function unit, and when the low level is detected. Operate.

The hook switch routine initializes the counter and the timer by the controller 110, sets the value to 0, drives the timer, and checks whether a low level signal is detected from the hook switch.

When the HIGH LEVEL signal is detected from the hook switch, the counter value is increased by 1 and the timer is driven to check whether the set time has elapsed, for example, 3 seconds. When the low level signal is detected again within 3 seconds and the high level is detected again, the value of the counter is increased by 1 again, and it is checked whether the set predetermined time, for example, 3 seconds has elapsed.

If it is confirmed by the control unit 110 that 3 seconds is counted, the value of the counter is checked to see if it is greater than 1, and if it is greater than 1, the routine proceeds to a warning routine. Proceed to mode.

13 is an example, the low level is detected three times by operating the hook switch constituting the hook switch unit 120, the dial signal 3 is detected, the low level is detected four times, the dial signal 4 is detected, the low level 2 and 6 are detected so that the dial signal 2 or 6 is detected.

Referring to Figure 5, when the communication restriction emergency telephone operating method according to the present invention will be described, the process of operating the key button routine when the detection of the key button code information by the control unit of the emergency telephone; Operating a tone detection routine when detecting DTMF code information; Operating a hookswitch routine when a low level signal is detected; It is configured to include.

Hereinafter, with reference to the accompanying Figure 5, in detail the communication restriction emergency telephone operating method according to the present invention, the emergency telephone is connected to the trunk line and operating using the trunk line voltage as the operating power (S100), the control unit 110 ) Controls and monitors each functional unit.

The controller 110 checks whether a key button is selected from the key button unit 140 to detect a signal of input code information (S110), and if it is determined that a signal of code information is detected, the key button routine is operated. (S120). This keybutton routine is described in detail below.

The control unit 110 monitors the hook switch unit 120 and checks whether the tone signal of the DTMF is detected while the hook switch is hooked on (S130), and when it is determined that the tone signal is detected, the tone detection routine. Operate (S140). This tone detection routine is described in detail below.

In addition, the control unit 110 checks whether the low level is detected in the state in which the hook switch is hooked off (HOOK 0FF) from the hook switch unit 120 under monitoring (S150), and when the low level is detected, the hook Operate the switch routine (S160). This hookswitch routine is described in detail below.

Referring to Figure 6, when the key button routine operation method of the communication restriction emergency telephone operating method according to the present invention, when the code information of the number selected by the control unit is input, the emergency telephone numbers recorded in the address of the ROM to the RAM one by one Previous recording process; Initializing count and RAM address values, previously writing phone numbers recorded in RAM into the data buffer one by one, and confirming that the code information is * and #; Previously recording the telephone numbers recorded in the RAM into the data buffer one by one; It is configured to include.

Hereinafter, referring to FIG. 6, the key button routine operating method of the communication restriction emergency telephone operating method according to the present invention will be described in detail. The code information input from the key button unit 140 by the controller 110 is 0 to 0. FIG. Check whether the code information by the number up to 9 (S200), if the code information by the number is not confirmed by * or # code information (S210).

If the code information is not code information by * and #, the process goes to the standby state, and when it is confirmed by code information by * and #, it proceeds to code routine. Such code routines are described in detail below.

When the code information is confirmed by the code information by numbers from 0 to 9 by the controller 110, the address of the RAM allocated to the memory unit 150 and the address of the ROM on which the emergency phone number is recorded are initialized and set to 0 ( S220), the emergency telephone number recorded from the address of the ROM corresponding to the input numeric code information is read and previously recorded in the RAM (S230).

That is, up to 24 bytes of numeric information can be recorded in the ROM address corresponding to the numeric code information. Initially, the address values of RAM and ROM are initialized to 0. Therefore, the emergency phone designated by the numeric code information of the ROM is designated. Record the telephone number corresponding to address 0 of the number in address 0 of the ROM.

The control unit 110 controls the counter to accumulate a value of 1 (ACCUMULATE) and increments the count (S240), checks whether the cumulative counted value is 24 (S250), and the cumulative counted value by the counter is not 24. In the case, the address values of RAM and ROM are increased by 1 (S260), and the process returns to an initial process of inputting code information of numbers input in the following order.

In addition, if the accumulated value counted by the counter is determined to be 24, the controller 110 initializes the address values of the counter and RAM to 0 (S270), and previously records the information recorded at the first address of the RAM in the data buffer. (S280).

The controller 110 analyzes the information of the previously recorded data buffer and checks whether it is an OXOC value indicating # (S290). If the information recorded in the data buffer is checked with #, check whether the counted value of the counter is 0 (S350). If the count value of the counter is 0, the process proceeds to the standby state, and if the count value of the counter is not 0, dialing is performed. Since this is completed, the flag DIAL_FLAG is set to a value of 1 (S360), and the process goes to the standby state.

When the controller 110 analyzes the information recorded in the data buffer and determines that the information is not #, the controller 110 checks whether the value is an OXOB value indicating * (S300). This tone generation routine is described in detail separately.

If the information recorded in the data buffer is determined to be *, the delay is processed for 1.7 seconds (S310), the counter value is incremented by one (S320), and whether the cumulative counted value is 24 in the counter. Check (S330). If the cumulative count value of the counter is determined to be 24 by the controller 110, the process proceeds to the waiting process S360 and sets the flag DIAL_FLAG value to 1 and proceeds to the waiting process.

If it is determined by the controller 110 that the cumulative value counted by the counter is not 24, the RAM address is increased by 1 (S340), and the process returns to the checking process (S280). Therefore, up to 24 pieces of information by the following sequence of emergency phone numbers must be processed.

Referring to FIG. 7, the code routine operating method of the communication restriction emergency telephone operating method according to the present invention will be described. A process of sequentially recording code information of a key button in a buffer by a controller and analyzing code information recorded up to the sixth time. ; If the analyzed code information is not a designated code combination, proceeding to a warning routine; Executing a designated frame of code information; It includes a configuration.

Hereinafter, with reference to the accompanying FIG. 7, the code routine operating method of the communication limited emergency telephone operating method according to the present invention will be described in detail. The code information input by the controller 110 is sequentially recorded in a buffer (S400), The counter is incremented by 1 (S410), and it is checked whether the value of the counter is 6 (S420).

If the value of the counter is confirmed as 6, the code information inputted to the sixth is sequentially analyzed (S430). The control unit 110 checks whether the analyzed code information is an initialization request for deleting the emergency telephone number recorded in the emergency telephone (S440), and if it is not the initialization request, checks whether a new telephone number is input (S450). If the number is not entered, check whether it is a time setting for setting a delay time (S460), if not, check if a password is changed (S470), and if not, change the key button arrangement of the key button part. If it is determined that the change is to be made (S480), and the key button array is not changed and set, the routine proceeds to a warning routine.

If it is determined by the controller 110 that the count value of the counter is not 6, it is determined whether the value is less than 6 (S500), and if it is not less than 6, analyzing the code information inputted to the sixth (S430). If the value counted and accumulated by the counter is greater than 6, check whether the input code information is remotely inputted through DTMF or input from the key button unit 140 (S490) and returns to the analysis process (S400). .

If it is confirmed by the control unit 110 to initialize (S440) and analyzes the code information continuously input and initializes all the emergency phone numbers recorded in the emergency phone (S510), if confirmed by the new number input (S450), The code information input is analyzed to record an emergency telephone number newly input at a designated key button number of the key button unit 140 (S520).

In addition, when the control unit 110 confirms the delay time setting (S460), it analyzes the code information input continuously and sets the set delay time (S530), and confirms it by the password input (S470). If it is confirmed that the password is changed and set (S540) and the key button arrangement of the key button 140 is changed (S480), the selected key button is analyzed as shown in FIG. Set to an array of (S550). 12 is an example of a control command by a combination of consecutively input code information.

Referring to Figure 8, the warning routine operating method of the communication restriction emergency telephone operating method according to the present invention, the process of outputting the B tone of the DTMF by the control unit; Outputting a C tone; Continuously outputting a warning signal; It includes a configuration.

Hereinafter, referring to FIG. 8, a warning routine operating method of the communication restriction emergency telephone operating method according to the present invention will be described in detail. Thus, the control unit 110 controls the DTMF generating unit 160 to generate a B tone of the DTMF. And output to the trunk line through the audio unit (S600), and controls the DTMF generation unit 160 to generate a C tone of DTMF and output to the trunk line through the audio unit (S610). In this way, non-numeric code information is provided to the CO line to prevent dialing.

In addition, the controller 110 generates an oscillation sound corresponding to 1.5 to 2 KHz and outputs it as a warning signal, and provides the warning signal because it is provided to the counterpart and the communication circuit unit 100 connected to or connected to the trunk line through the audio unit 130. In order to prevent communication by (S620).

Referring to Figure 9, when the tone detection routine operation method of the communication restriction emergency telephone operating method according to the present invention, when the numeric code information by DTMF tones by the control unit proceeds to the warning routine; Proceeding to code routine when * and # by DTMF tone are input; It includes a configuration.

Hereinafter, referring to FIG. 9, the tone detection routine operating method of the communication restriction emergency telephone operating method according to the present invention will be described in detail. Numerical code information of 0 to 9 by DTMF tones is input by the control unit 110. If the numeric code information is input, go to the warning routine (S700). That is, DTMF is input from the outside to occupy the trunk line and prevent the other party from calling.

The controller 110 checks whether code information of * and # by DTMF tones is input, proceeds to a code routine when code information of * and # is input, and proceeds to a standby process when no input is performed. In other words, only the code information for remotely controlling the emergency telephone is input by using DTMF tones from the outside, otherwise the process proceeds to the standby state so as not to communicate.

Referring to Figure 10, when explaining the hook switch routine operating method of the communication restriction emergency telephone operating method according to the present invention, a process of checking whether a low level signal is detected by the control unit; Checking whether a predetermined predetermined time is counted; If a low level is detected from the hook switch, returning to the detection confirmation process; otherwise, returning to the count confirmation process and repeating it; It includes a configuration.

Hereinafter, referring to the attached FIG. 10, the hook switch routine operating method of the communication restriction emergency telephone operating method according to the present invention will be described in detail. The controller 110 initializes the counter and the timer to a value of 0 and operates the timer. (S800).

The controller 110 checks whether the trunk line voltage used as the operating voltage VCC from the hook switch unit 120 is detected at a low level (S810), and increases the value of the counter by 1 when a high level is detected (S820). In step S830, the timer counts a predetermined time, for example, 3 seconds.

If it is determined by the controller 110 that 3 seconds has been counted, the controller checks whether the cumulative count value is greater than 1, proceeds to the standby mode if it is not greater than 1, and proceeds to a warning routine if the number is greater than 1. (S850).

If it is determined by the controller that 3 seconds have not been counted, it is checked whether the trunk line voltage is detected at a low level (S840), and when the high level is detected, the timer returns to the process of counting 3 seconds (S830), and the low level is If detected, it returns to the detection confirmation process (S810).

In other words, if the CO line voltage is detected at least two times within 3 seconds, the communication proceeds to the warning routine. 13 shows an example in which a low level is detected from a trunk line.

Referring to Figure 11, when explaining the tone generation routine operation method of the communication restriction emergency telephone operating method according to the present invention, activating the DTMF generator to generate the tone signal recorded by the control unit; Counting the first time and setting the DTMF generator to an inactive state; Counting the second time and restoring the timer to slow mode; It includes a configuration.

Hereinafter, referring to FIG. 11, the tone generation routine operation method of the communication restriction emergency telephone operating method according to the present invention will be described in detail. DTMF information of the data buffer allocated to the memory unit 150 by the control unit 110 will be described. Previously recorded in the generator 160 (S900), and enable the DTMF generator 160 in an activated state to generate a recorded DTMF tone signal (S910).

The controller 110 switches the counting period of the timer from the slow mode of 0.1 second to the fast mode of 0.01 second, and initializes the timer value to 0 to start counting.

Check whether the timer counts 80 milliseconds (S930), and when the counting of 80 ms is completed, the DTMF generator 160 is disabled to disable the DTMF tone signal (S940). The timer is initialized and controlled to a value of 0 (S950).

The controller 110 controls the timer to count down, checks whether 100 milliseconds (ms) are counted (S960), and if it is determined that 100 ms is counted, the controller 110 switches the timer from the fast mode of 0.01 seconds to the slow mode of 0.1 seconds. Then, the process of increasing the key button routine (S320) (S970).

Therefore, the selected emergency telephone number is issued as DTMF tone signal to call and communicate.

Although the present invention has been described as an example, it is not necessarily limited to such an example, and various modifications can be made without departing from the spirit of the present invention. Therefore, one example disclosed in the present invention is not intended to limit the technical spirit of the present invention but to explain, and the scope of the technical spirit of the present invention is not limited by the one example. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

1 is an explanatory diagram of a general emergency telephone operating method according to the prior art;

2 is an exemplary emergency telephone according to the prior art.

3 is a functional configuration diagram of a communication restriction emergency telephone according to the present invention,

4 is a circuit diagram of a communication limit emergency telephone according to the present invention;

5 is a flowchart of a method for controlling emergency call operation according to the present invention;

6 is a flow chart of the key button routine operation of the communication emergency emergency telephone operation method according to the present invention,

7 is a code routine operating flowchart of the communication restriction emergency telephone operating method according to the present invention;

8 is a warning routine operation flowchart of the communication restriction emergency telephone operating method according to the present invention;

9 is a flowchart of operation of a tone detection routine of the communication restriction emergency telephone operating method according to the present invention;

10 is a flow chart of the hook switch routine operation of the emergency call operation limit method according to the present invention;

11 is a flowchart of operation of tone generation routine of the communication restriction emergency telephone operating method according to the present invention;

12 is a configuration diagram of the code information of the communication restriction emergency telephone operating method according to the present invention;

Figure 13 is an exemplary signal detected by the communication limit emergency telephone from the hook switch unit,

14 is an explanatory view of a key button unit arrangement setting state of a communication limit emergency telephone according to the present invention;

15 is an exemplary emergency call emergency communication phone according to the present invention.

          ** Description of the symbols for the main parts of the drawings **

100: communication circuit 110: control unit

120: hook switch unit 130: audio unit

140: key button portion 150: memory portion

160: DTMF generator 170: DTMF receiver

Claims (1)

When the power of trunk line is supplied from hook switch part by control part of emergency phone and detects key button code information from key button part, and enters numeric code information for the first time, dials emergency phone number recorded in ROM address of the corresponding number code. Secondly, a key button process for executing a designated frame when the code information of * and # is input, and operating a key button routine which proceeds to the standby state when other codes are input into the set; Detecting DTMF code information input from the DTMF receiving unit from the outside by the control unit. First, when numeric code information is input, DTMF is input from the outside so as to occupy the trunk line and not call the other party. Second, code information of * and #. A ton detection process for remotely controlling the emergency telephone when the input is inputted and proceeding to the standby state when the other code is input to the setter; And The hook switch operating the hook switch routine which stops communication when the trunk line voltage used as the operating voltage is detected at the low level by the controller and is detected at the low level more than two times within a predetermined time. process; Communication restriction emergency telephone operation method comprising a.

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