KR100293560B1 - Method for searching telephone number of subscriber with subscrier terminal in exchange system - Google Patents

Abstract

end. The technical field to which the invention described in the claims belongs

The present invention relates to a subscriber telephone number retrieval method of an exchange system.

I. The technical problem that the invention is trying to solve

The present invention provides a method for retrieving a subscriber's telephone number using an arbitrary subscriber station in an exchange system.

All. Summary of Solution of the Invention

The subscriber telephone number retrieval method using a subscriber station in a switching system operating a plurality of private switching systems in one network includes the steps of: requesting a telephone number retrieval by transmitting a specific subscriber telephone number to the domestic switching system; The local switching system includes searching for whether the specific subscriber telephone number is a subscriber telephone number existing in the network, and notifying the subscriber terminal of the search result using a specific tone.

la. Important uses of the invention

Used to retrieve subscriber telephone numbers from the switching system.

Description

Search method of subscriber's telephone number using subscriber terminal in exchange system {METHOD FOR SEARCHING TELEPHONE NUMBER OF SUBSCRIBER WITH SUBSCRIER TERMINAL IN EXCHANGE SYSTEM}

The present invention relates to a subscriber telephone number retrieval method of an exchange system, and more particularly, to a subscriber telephone number retrieval method using a subscriber station.

In the conventional switching system, the subscriber's telephone number search is performed by the operator performing a prescribed procedure using only the computer or operator's terminal which is linked to the switching system. Therefore, in order to search for the subscriber currently in operation in the switching system, it was possible to use the subsidiary equipment installed and operated in the switching system. Even if the subscriber who is looking for in the exchange system interworking with the network is registered in another exchange system, the call processing is performed by dialing the telephone number, so only the presence of the telephone number can be known and the subscriber's telephone number operating in the own exchange system is identified. It was impossible to do. Therefore, in order to find out whether the subscriber's telephone number in operation is a subscriber of the local exchange system, the operator of the switching system had to be inquired, and this caused a troublesome and excessive time.

Accordingly, an object of the present invention is to provide a method for retrieving a registered subscriber subscriber's telephone number using an arbitrary subscriber station in an exchange system.

In order to achieve the above objects, a subscriber telephone number search method using a subscriber station in a switching system operating a plurality of private switching systems in one network is provided. Upon detecting a hookoff from the terminal, checking the received digits to determine whether the subscriber's telephone number search command is required; Checking whether it exists, sending a third notification tone to the subscriber station when it is present in the home exchange system, and sending a flood search message to another exchange system in the network if it does not exist in the home exchange system. Checking whether a response is received and a first notification upon receipt of the response And the delivery, and the second alert tone when the response is not received, characterized in that it comprises the step of transmitting to the subscriber station.

1 is a block diagram of a general exchange system.

2 is a control flowchart for searching for a subscriber telephone number using a subscriber station in an exchange system according to the present invention;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding the reference numerals to the components of each drawing, the same components have the same reference numerals as much as possible even if displayed on different drawings. In describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

1 is a block diagram of a general exchange system.

Referring to FIG. 1, the controller 111 controls call switching and controls the overall operation of the key phone system to provide various services to a user. The ROM 112 stores a program of the control unit 111 and initial service data for performing basic calls and various functions. The RAM 113 temporarily stores data generated while the controller 111 executes a program. The switching circuit 114 switches various signals under the control of the control unit 111. The subscriber circuit 115 supplies a call current to the subscriber telephone under the control of the controller 111 and simultaneously interfaces a signal between the subscriber telephone and the switching circuit 114. The ring generator 116 generates a ring signal and supplies it to the subscriber circuit. The trunk circuit 117 is connected to the trunk line with another switch when operating a private switching network, and performs a function of interfacing a signal transmitted and received through the trunk line. The tone generator 118 generates various tone signals under the control of the controller 111 and outputs them to the switching circuit 114. A dual tone multi frequency (DTMF) receiver 119 analyzes the DTMF signal input from the switching circuit 114, converts the signal into digital data, and outputs the digital data to the controller 111. Here, the DTMF signal input to the DTMF receiver in the switching circuit 114 is a telephone number generated by the trunk line subscriber or a telephone number generated by the extension subscriber. The DTMF transmitter 120 converts the digital data output from the control unit 111 into a DTMF signal and outputs the DTMF signal to the switching circuit 114. Here, the DTMF signal output from the DTMF transmitter 120 becomes the telephone number of the trunk line subscriber generated when the station side calls the trunk line side.

2 is a diagram illustrating a control procedure for searching for a subscriber telephone number registered and operated using a subscriber station in an exchange system according to an exemplary embodiment of the present invention.

Referring to FIG. 2, first, in step 211, the controller 111 determines whether a hookoff is detected from any subscriber station. In this case, when detecting the hookoff, the controller 111 proceeds to step 213, and when the hookoff is not detected, the controller 111 proceeds to step 239 to perform a corresponding function.

On the other hand, the control unit 111 detects the hookoff and proceeds to step 213 and transmits a dial tone to the subscriber station where the hookoff is detected. At this time, the subscriber (operator) inputs a digit at the same time as the dial tone. In this case, the digit may be a digit capable of performing a telephone call or may be a digit for a command for performing a diagnostic mode to the system.

The controller 111 receives the digit input by the subscriber in step 215, and proceeds to step 217 to determine whether the received digit is a system diagnosis mode execution command. In this case, when the reception digit is the system loss mode execution command, the control unit 111 proceeds to step 219. If the reception digit is not the system diagnosis mode execution command, the control unit 111 proceeds to step 241 to perform a general digit processing routine.

The control unit 111 which has received the system diagnosis mode execution command and proceeds to step 219 sends a dial tone requesting a password to the subscriber station, and proceeds to step 221 to receive a password input by the subscriber.

In operation 223, the controller 111 determines whether the input password is the same as the password set in the system. In this case, when the input password is the same as the password set in the system, the control unit 111 proceeds to step 225. When the input password differs from the set password, the control unit 111 proceeds to step 243 to perform a processing routine for sending a busy tone. Perform.

The controller 111 that detects that the password entered by the subscriber and the password set in the system is the same, controls the tone generator in step 225 and outputs a tone requesting input of a subscriber's telephone number to be searched by the subscriber terminal. do. In this case, the subscriber's telephone number is assumed to be seven digits. At this time, after listening to the tone, the subscriber inputs 7 digits of the telephone number to be searched. Therefore, the control unit 111 receives the search telephone number input by the subscriber in step 221.

In step 229, the control unit 111 searches whether the input search subscriber telephone number exists in the current exchange system (exchange system in which the subscriber station is registered and is operated), and in step 231, the subscriber telephone number is the current exchange system. Determine if it exists in In this case, when the subscriber's telephone number exists in the current exchange system, the controller 111 proceeds to step 233. When the subscriber's telephone number does not exist in the current exchange system, the controller 111 proceeds to step 245.

That is, when the subscriber telephone number does not exist in the current switching system, the control unit 111 transmits a flood serch message to each switching system in the network to check whether the telephone number exists in the network in step 245. . In step 247, the controller 111 checks whether a response message to the flood search message is received.

At this time, when receiving the response message, the control unit 111 controls the tone generator 118 in step 249 to transmit the first notification tone indicating that the telephone number exists in the other switching system to the subscriber station, and proceeds to step 235. On the other hand, if the response message is not received for a predetermined time, the control unit 111 transmits a second notification tone to the subscriber station that the telephone number does not exist in the network in step 251 and proceeds to step 235.

On the other hand, if the subscriber telephone number exists in the current exchange system, the control unit 111 controls the tone generator 118 in step 233 to inform the subscriber terminal that the subscriber telephone number exists in the current exchange system. In step 235, it is checked whether another search phone number is inputted.

In this case, when inputting another search phone number, the controller 111 proceeds to step 237. If there is no input of another search phone number for a predetermined time, the controller 111 proceeds to step 237. ) Is detected. At this time, upon detecting the hook-on, the control unit 111 terminates the present program for searching the subscriber's telephone number, and when the hook-on is not detected, the control unit 111 returns to step 229 to retrieve the subscriber's telephone number again.

As described above, the present invention enables a subscriber telephone number search registered and operated in the switching system to be searched using a registered subscriber telephone operating without using an operator terminal or a computer interworking with the switching system. In other words, it is possible to easily identify wherever there is a telephone in use by registering the search of the currently operating telephone number, thereby providing more improved subscriber information service to operators and subscribers of the exchange system.

As described above, the present invention enables the subscriber's phone number registered and operated in the exchange system to be searched using the registered subscriber terminal in operation, so that the user can easily search for a currently used phone number anywhere in the terminal. There is an advantage to grasp.

Claims (3)

Claims [1] A method for retrieving a subscriber's telephone number using a subscriber station in a switching system operating a plurality of private switching systems in one network. Requesting a telephone number search by transmitting the specific subscriber telephone number to the local exchange system by the subscriber terminal; And wherein the local switching system detects whether the specific subscriber telephone number is a subscriber telephone number existing in the network, and notifies the subscriber station of the search result using a specific tone. Claims [1] A method for retrieving a subscriber's telephone number using a subscriber station in a switching system operating a plurality of private switching systems in one network. Determining which one of the plurality of private switching systems is a subscriber telephone number search command by checking a received digit upon detecting a hookoff from any subscriber terminal; Requesting to input a search telephone number at the time of the subscriber telephone number search command, and checking whether the input telephone number exists in the local exchange system; Transmitting a third notification tone to the subscriber station when present in the home exchange system; Sending a flood search message to another switching system in the network if it does not exist in the home switching system, and checking whether a response is received; And transmitting a first notification tone when the response is received, and transmitting a second notification tone to the subscriber station when the response is not received. The method of claim 2, And requesting input of a password when the subscriber telephone number search command is received, and requesting input of the search telephone number when the inputted password is the same as a preset password.