KR20020022188A - Keyphone System Using Precinct Network, Call processing and Data Transmission Method Using the Keyphone System - Google Patents

Abstract

PURPOSE: A keyphone system using a private network, and a call process method and a data transmission method using the same are provided to conveniently perform installation and maintenance by unifying a private computer network and a private telephone network. CONSTITUTION: At least one server computer(104) connects to a central office(102) by a PSTN(Public Switched Telephone Network) and connects to the Internet(106) through a high-speed modem(108). A plurality of client computers(110-1to 110-n) connect to the server computer(104) by a LAN(Local Area Network)(14). The server computer(104) includes a ring signal sensor for sensing a ring signal received from the central office(102), a hook-off switch for holding a termination call from the central office(102) or an origination call from the client computers(110-1 to 110-n), a storing device for storing matching information between a paging number and a TCP/IP((Transmission Control Protocol/Internet Protocol) address of the client computers(110-1 to 110-n), a digital converter for performing an intermodulation of a voice signal and a digital signal, and a computer internal bus interface circuit for interfacing data between the server computer(104) and other devices. Users of a plurality of client computers(110-1 to 110-n) perform a communication using one fixing IP address assigned in the server computer(104).

Description

Keyphone System Using Premise Network, Call Processing Method and Data Transmission Method {Keyphone System Using Precinct Network, Call processing and Data Transmission Method Using the Keyphone System}

The present invention relates to a system for integrating a wired communication network into an premises network for premises computing, and more particularly, to a key phone system using a premises network, a call processing method and a data transmission method using the same.

The currently used premises communication network is duplicated into a network consisting of a local area network (LAN) for computer processing and a telephone network for voice communication.

The telephone network is connected to a regular phone or a key phone, but the key phone is convenient in terms of usability compared to a normal phone, but the hardware is fixed and inflexible, there is a limitation in the phone book function or speed dial function, and it is impossible to send and receive Korean messages. have. In addition, since the internal communication network is dualized with a computer network and a telephone network, installation and maintenance / maintenance are complicated and inconvenient.

The present invention has been made to solve the above-mentioned problems, the key phone system using the premises network that can be easily installed and maintained by unifying the local computer network and telephone network to the LAN, call processing method and data transmission method using the same To provide a technical problem.

Another technical problem of the present invention is to make it possible to easily check the state of the trunk line and the client computer by continuously transmitting data that can confirm the call state of each client computer user from the server computer to each client computer.

Another technical problem of the present invention is to enable transmission and reception of text data between client computer users and to allow a plurality of client computer users to communicate with one IP address.

1 is an overall configuration diagram of a key phone system using the premises network according to an embodiment of the present invention.

2 is an overall configuration diagram of a key phone system using the premises network according to another embodiment of the present invention.

3 is a flowchart illustrating a method of processing an incoming call of a server computer in a key phone system using an premises network according to the present invention.

4 is a flowchart illustrating a method of processing an incoming call of a client computer in a key phone system using an premises network according to the present invention.

5 is a flowchart illustrating a method of processing an incoming call over the Internet in a key phone system using an premises network according to the present invention.

6 is a flowchart illustrating a method for processing an outgoing call of a client computer in a key phone system using an premises network according to the present invention.

7 is a flowchart illustrating a method for processing an outgoing call of a server computer in a key phone system using an premises network according to the present invention.

8 is a flowchart illustrating a data transmission method of a client computer in a key phone system using an premises network according to the present invention.

9 is a flowchart illustrating a data receiving method of a client computer in a key phone system using an premises network according to the present invention.

<Description of the symbols for the main parts of the drawings>

102: telephone station 104: server computer

106: Internet 108: High Speed Modem

110, 110-1 to 110-n: client computer

202: switch 204: telephone

11: public telephone network 12: high-speed modem line

13, 14: LAN 15: internal telephone network

The present invention for achieving the above-described technical problem is at least one server computer connected to the telephone station by a public telephone network, and connected to the Internet through a high-speed modem; And a plurality of client computers connected to the server computer by a LAN.

Wherein the server computer comprises a telephone ring signal detector for detecting a ring signal received from the telephone station; An on hook switch for holding an incoming call from the telephone station or an outgoing call from the client computer; Storage for storing matching information between the call number and the TCP / IP address of the client computer; An audio digital converter for mutual conversion of an audio signal and a digital signal; And a computer internal bus connection circuit for compatibility between the server computer and other devices, and enables communication of the plurality of client computer users with one fixed IP address assigned to the server computer.

In addition, the client computer has an environment in which a sound card is built-in or connected to a USB phone or an Internet telephone, and is connected by the at least one server computer and the telephone exchange.

In the key phone system using the premises network of the present invention, the premises computer network operates in connection with the Internet network using a telephone network and one fixed IP address, so that a plurality of users of the premises network transmit and receive selectively using the telephone network and the Internet network. Do it.

In addition, all voice signals are digitally processed to communicate using a LAN, and the exchange and main device functions and key phone telephone functions are replaced by computer servers and clients. Choose from a variety of hotlines, hotlines, and the Internet.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, the same reference numerals are used for the same or corresponding parts.

System configuration

1 is an overall configuration diagram of a key phone system using an premises network according to an embodiment of the present invention, showing a relatively small premises network.

As shown, the server computer 104 and the telephone station 102 are connected through a public telephone network 11 and a high speed modem 108, and the telephone station 102 and the high speed modem 108 are connected to the high speed modem line 12. Is connected. The server computer 104 and the Internet 106 are connected via a LAN 13 via a high speed modem 108. On the other hand, the server computer 104 and the plurality of client computers 110-1 to 110-n are connected via a LAN 14.

In the key phone system using the premises network proposed in the present invention, the server computer 104 has a built-in public network interface device, the public network interface device is a telephone ring signal detector, incoming call for detecting a ring signal received from the telephone station 102 Or on-hook switches to hold outgoing calls, dual tone multi frequency (DTMF) tone encoding / decoding circuits to send and receive telephone numbers, voice digital converters to convert voice signals to digital signals, server computers and other devices Computer internal bus connection circuits for interoperability, storage for storing matching information between the call number and the TCP / IP address of the client computer, and the like. In addition, the client computers 110-1 to 110-n have built-in sound cards or can connect USB phones, Internet telephones, and the like. The call number refers to a telephone number input using a general telephone, an IP address used for an Internet phone, and an extension number in a premises network. In addition, the storage device means a medium that stores matching information between a call number and a TCP / IP address, and is used in the same meaning as a database mentioned below.

A case where a call is received from the telephone station 102 through the public telephone network 11 to the server computer 104 will be described. The ring signal generated by the telephone station 102 is sent to the server computer 104 via the public telephone network 11, and the server computer 104 receives data (phone number) and internal database (memory) input through the public telephone network. The data (TCP / IP address) stored in the network is compared, and the client computer 110-1 to 110-n having the same address is connected via the LAN 14 to send data. The user of the client computers 110-1 to 110-n receiving the data can transmit and receive voices through a sound card or use a USB phone or an Internet phone to talk with the other party.

When a call is received with a fixed IP through the Internet 106, the method of processing an incoming call is the same as the method of processing a call received through the public telephone network 11. In this case, however, the data (telephone number) input to the server computer via the Internet network becomes an IP address.

When making a call from one client computer to another client computer, if the client program (incoming / outgoing call processing program) built in the client computer is executed, it can refer to the database registered on the server computer to check the physical status of other client computer users. By checking in a different color or shape, it is possible to shorten the time required for the CO / IP call attempt.

FIG. 2 is an overall configuration diagram of a key phone system using a premises network according to another embodiment of the present invention, and shows a configuration diagram of a large-scale premises network in which two or more servers are used and an exchange is installed between a public telephone network and a server computer.

As shown, an exchange 202 is provided between the plurality of server computers 104 and the telephone station 102, and the telephone station 102 and the exchange 202 are connected through the public telephone network 11, and the exchange 202 And each server computer 104 are connected through an internal telephone network 15. On the other hand, each server computer 104 and telephone station 102 are connected via a high speed modem 108, and the telephone station 102 and high speed modem 108 are connected via a high speed modem line 12. In addition, the server computer 104 and the Internet 106 are connected via a LAN 13 via a high-speed modem 108, and each server computer 104 and a plurality of client computers 110 connect the LAN 14 to each other. Connected via

When an external caller calls the client computer 110 user by using the regular telephone 204, the telephone number of the telephone number is entered at the switch 202 through the internal telephone network 15 when the external telephone calls the extension number. Selects the extension number and transmits the ring signal, and the transmitted ring signal is transmitted to the server computer 104 through the internal telephone network 15.

Thereafter, the server computer 104 compares the data (extension number) input through the internal telephone network 15 with the data (TCP / IP address) stored in the internal database, and the client computer whose address matches through the LAN 14. Access 110 and send data.

How to handle incoming calls

3 to 5 are flowcharts illustrating a method of processing an incoming call in a keyphone system using an premises network according to the present invention.

Incoming call processing method is roughly characterized in that, as a caller attempts to make a call to the client computer user, the server computer compares the call number entered by the caller with an internal database to determine whether a corresponding TCP / IP address exists. Generating a voice call signal to the client computer when the corresponding TCP / IP address exists; generating a call alert sound when the voice call signal is generated from the server computer; and the client computer user. When the call mode is selected by selecting a call alert sound and selecting a call button, a call path for transmitting and receiving with digitized voice data is formed.

Such an incoming call processing method can be explained by dividing into a processing method in a server computer and a processing method in a client computer.

3 is a flowchart illustrating a method of processing an incoming call of a server computer in a key phone system using an premises network according to the present invention, and illustrates a case in which an incoming call is generated from a public telephone network to a server computer and processed.

As the caller attempts to talk to the client computer user through the telephone station, the server computer 104 continuously detects whether a ring signal is received from the telephone station 102 (S301), and when the ring signal is detected, switches to the on-hook state. While notifying the telephone station 102 that the reception is ready, the voice data stored therein is sent to the telephone station, and the caller is guided to enter the extension number (S302).

When the caller enters the extension number according to the announcement, the caller determines the suitability by calculating the number of button numbers and the numbers pressed (S303). As a result of determining the suitability, if it is a suitable extension number, that is, if the DTMF received value is a suitable extension number, the internal database is searched (S304) to check whether a corresponding TCP / IP address exists. Here, the internal database (memory) refers to a medium that stores correspondence information between the call number and the premises client computer TCP / IP address.

If the corresponding TCP / IP exists as a result of searching the internal database (S305), the TCP / IP call signal is set (S306) and the corresponding client computer 110 is called by the voice call signal. Thereafter, if there is a response from the called client computer (S307), a communication path for transmitting and receiving with digitized voice data is formed (S309). On the other hand, if there is no response from the client computer, the caller is notified that the call is not made through the voice announcement broadcast (S308).

FIG. 4 is a flowchart illustrating a method of processing an incoming call of a client computer in a key phone system using an internal network according to the present invention, and illustrates a case in which an incoming call is generated from a telephone station to a corresponding client computer through a server computer and processed. .

As the caller attempts to make a call to the client computer user via the telephone company, it is determined whether the data received from the server computer 104 via TCP / IP is a voice call or data update related data (S401). The state of the computer 104 (use of each client, use of a trunk line, a database, etc.) is updated (S405), and the process ends.

On the other hand, in the case of a voice call, a program for processing an incoming call for making a call is displayed on the screen of the corresponding client computer according to the selection of the client computer user who has received the voice call, and a call alert sound is generated (S402). Call alerts can be generated through the sound card or the system speaker, which can be customized by the client computer user.

When the client computer user confirms the call alert sound and clicks the call button to select a call mode (S403), a voice call network is formed (S404). Voice calls are made using devices such as sound cards or USB phones.

The incoming call processing method in the present invention is similarly made in the case of a call received through the Internet, which will be described with reference to FIG. 5 as follows.

5 is a flowchart illustrating a method of processing an incoming call through the Internet in a key phone system using an premises network according to the present invention.

As a caller connected to the Internet attempts to make a call to a client computer user through the Internet, the server computer determines whether the call comes from a fixed IP address from the Internet (S501), and if it is not a fixed IP address, the server computer information and the client computer. The user information and the system information are sent to the registered client user to change the database (S510).

On the other hand, when a call signal matching the internal IP address is received, continuous dummy data is received and analyzed (S502) to determine whether it is an internal Internet phone protocol (S503). In the case of the internal Internet phone protocol, after setting the data (IP address) included in the dummy data and the internal IP address stored in the database (S504), the client computer user is identified by the internal TCP / IP address (S505). The user verification process is repeated until the user is verified while setting the data included in the dummy data and the internal TCP / IP address.

If the user is confirmed, it sets a TCP / IP call signal and sends a call signal to the client computer user (S506). When the client computer user who receives the call signal responds (S507), a voice call network is formed, and voice data changed into a digital signal is transmitted and received using a device such as a sound card or a USB phone (S508).

If the client computer user who receives the call signal does not answer, the voice announcement broadcast (S509) is transmitted to the caller, and the data included in the dummy data and the internal TCP / IP stored in the database to call another client computer user. Proceeding to step S504, the address is set as described above.

How to handle outgoing calls

6 and 7 are flowcharts illustrating a method for processing an outgoing call in a keyphone system using an premises network according to the present invention.

In the outgoing call processing method of the present invention, the client computer schematically determines a calling mode according to a caller's call request, displays the called party database according to the calling mode, and recalls the called party's call number from the database. Transmitting to the server computer, the server computer analyzing the received call number and connecting to the communication network, and transmitting an incoming call announcement to the called party from the communication network, and forming a voice call network according to the call approval of the called party; It includes a step.

Such an outgoing call processing method can be described by dividing the outgoing call processing method in the client computer and the outgoing call processing method in the server computer.

FIG. 6 is a flowchart illustrating a method for processing an outgoing call of a client computer in a key phone system using an on-premises network according to the present invention. In this case, an outgoing call is generated from a client computer to a public telephone network and processed. It is divided into external calling mode, internet phone calling mode and premises calling mode. In the drawing, the 1-click mode is a modified method of the external call mode, which can attempt to make a call with only one click for the user's convenience.

According to the call request of the client computer user, if any key of the mouse or the keyboard is input while the program for the outgoing call processing is executed in the client computer (S601), it determines which call mode and performs the operation for each call mode. .

First, in the one-click calling mode (S602), when the caller retrieves the call number from the one-click database and the caller's call number is selected (S603), the caller sends the selected call number to the server computer through TCP / IP. The server computer analyzes this data, generates DTMF tones and sends them to the telephone company via the trunk line, which generates a ring signal to the called party's telephone. Accordingly, when the called party picks up the receiver, a call loop is formed (S604). After the call loop is formed, a call can be made using a device such as a sound card or a USB phone (S605).

In the external call mode (S606), the client computer user is asked to input the caller's call number or the external caller database is displayed (S607) to select the desired caller's call number (S608). The client computer sends the selected call number to the server computer via TCP / IP, and then operates in the same way as the one-click call mode. That is, the server computer analyzes the received call number, generates DTMF tones, and sends the DTMF tone to the telephone station through the trunk line. Accordingly, a call loop is formed when the called party using the originating call number picks up the receiver (S604). After the call loop is formed, a call can be made using a device such as a sound card or a USB phone (S605).

In the case of the Internet phone calling mode (S609), the client computer user is allowed to input the IP address of the called party or displays the Internet caller database to select the called party (S610). Then, when a specific key for a call is input, it is replaced with the TCP / IP address stored in the database and is connected to the Internet through the TCP / IP and the gateway (S611). Next, when the called party answers, a call network is formed through a sound card or other device (S605).

In the premises calling mode (S612), the premises callee database is displayed on the client computer (S613) and the user selects the desired callee (S614). At this time, the displayed on-premises callee database can be used to determine whether the telephone network user and non-user physically (color or shape) differently displayed. If the selected callee is in use (S615), another callee is selected, and if not, the call is made through a sound card or other device (S605).

FIG. 7 is a flowchart illustrating a method for processing an outgoing call of a server computer in a key phone system using an internal network according to the present invention, and illustrates a case where an attempt is made to make a call from a server computer to a public telephone network.

The client determines whether a communication request from the computer to the trunk line has been received (S701), and if there is a communication request, searches for an unused trunk line telephone network (S702) and turns it on. Subsequently, the data received from the client computer is converted into DTMF tones and transmitted (S703). Accordingly, when the telephone network is formed, voice data communication is performed by converting the voice data received from the telephone network to digital and sending it to the called party. (S704). If the telephone network is in use, voice data such as "telephone network in use" is transmitted to the client computer user (S705).

How to send and receive data

8 is a flowchart illustrating a data transmission method in a key phone system using an premises network according to the present invention.

According to the data transmission request of the client computer user, the key input by the client computer user is read (S801), and it is determined whether it is the external transmission mode (S802). If the determination result is not in the external transmission mode, that is, in the internal transmission mode, the internal caller database is searched to select the internal sender (S803).

In the external transmission mode, the Internet sender database is displayed and the Internet sender is selected (S804), and the data stored in the database is analyzed to determine whether the called user is an Internet phone user (S805). If the called user is an Internet phone user, the file is transmitted to the other party's IP address stored in the database (S806). If the called user is not an Internet phone user, the e-mail address stored in the database is checked (S807). If the e-mail address is not stored in the database, the e-mail address is input (S809). If the e-mail address is stored in the database, the file is directly transmitted to the Internet through TCP / IP (S808).

Such a data transmission method may be described as follows according to whether the data to be transmitted is a file format or not. First, when the data to be transmitted is not a file format, data is transmitted using a general email communication program. On the other hand, if the data to be transmitted is a file format, the client computer user drags or copies the file to be transferred and drops or pastes it on the callee icon selected in step S803 or S804. Then, if the selected callee is an internal sender, the file to be transmitted is transmitted through TCP / IP to the internal sender IP address, and if the external caller is transmitted to the Internet via TCP / IP to the IP address registered in the database.

In the above, when the called user is an Internet phone user, the data is transmitted to the IP address stored in the database. Since the IP address used at this time can be applied to the Internet phone, the network configuration of the premises can be simplified.

9 is a flowchart illustrating a data receiving method of a client computer in a key phone system using an premises network according to the present invention.

When a communication request comes in through TCP / IP from inside or outside (S901), it is determined whether a directory for storing a file exists (S902). If the directory does not exist, the directory is created with a preset name (S903) and the file is received and stored (S904). On the other hand, if a directory exists, the file is immediately received and stored.

Those skilled in the art to which the present invention described above belongs will understand that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. Therefore, the above-described embodiments are to be understood as illustrative in all respects and not as restrictive. The scope of the present invention is shown by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

The present invention described above has the following effects.

First, it is possible to simplify the installation and maintenance / maintenance by unifying the local network to the LAN.

Second, it replaces switch and host function and key phone phone function with computer server and client, and divides phone book function into external, internal, hotline, internet, etc. for convenience of client user. Make it available.

Third, since the client user continuously receives data to check the call status of other client users from the server, it is possible to always check the status of the trunk line and other client users.

Fourth, text data can be transmitted and received between client computers through a TCP / IP address.

Fifth, since a fixed IP address and dummy data are used, a plurality of client computer users can receive an Internet phone.

Claims (10)

At least one server computer connected to a telephone station by a public telephone network and connected to the Internet via a high speed modem; And A key phone system using an on-premises network including a plurality of client computers connected by the server computer and a LAN, The server computer includes a telephone ring signal detector for detecting a ring signal received from the telephone station; An on hook switch for holding an incoming call from the telephone station or an outgoing call from the client computer; Storage for storing matching information between the call number and the TCP / IP address of the client computer; An audio digital converter for mutual conversion of an audio signal and a digital signal; And A computer internal bus connection circuit for interoperability between the server computer and other devices; and including a fixed IP address assigned to the server computer to enable communication of the plurality of client computer users. Keyphone system used. The method of claim 1, The client computer is a key phone system using an on-premises network containing a sound card. The method of claim 1, The client computer is a USB phone or a key phone system using an on-premises network connected to an Internet phone. The method of claim 1, And said at least one server computer and said telephone station are connected by an exchange. An incoming call processing method in a key phone system using an on-premises network including at least one server computer connected to a telephone station by a public telephone network and connected to the Internet through a high-speed modem, and a plurality of client computers connected to the server computer and a LAN. As As a caller attempts to call the client computer user, the server computer compares the call number entered by the caller with an internal database to determine if a corresponding TCP / IP address exists; Generating a voice call signal to the client computer when the corresponding TCP / IP address exists; The client computer generating a call alert sound when a voice call signal is generated from the server computer; And When the client computer user checks a call alert sound and selects a call button, and a call mode is selected, a call path is formed to transmit / receive the digitized voice data. . The method of claim 5, When the caller attempts to make a call through a telephone station, verifying that the TCP / IP address exists comprises: requesting the caller to enter an extension number if a ring signal received from the telephone station is detected; Checking whether the extension number input by the caller is an appropriate extension number and checking whether a TCP / IP address corresponding to the extension number exists. The method of claim 5, When the caller attempts to make a call over the internet network, determining whether the TCP / IP address exists includes analyzing dummy data continuously received through the internet network; And determining whether an IP address included in the dummy data is an internal TCP / IP address as a result of the dummy data analysis. An outgoing call processing method in a keyphone system using an on-premises network including at least one server computer connected to a telephone station by a public telephone network and connected to the Internet through a high-speed modem, and a plurality of client computers connected to the server computer and a LAN. As Determining, by the client computer, a calling mode according to a caller's call request; Displaying the called party database according to the calling mode, and transmitting the called number of the called party selected from the database to the server computer; The server computer analyzing the received call number and accessing the communication network; And Transmitting a call announcement to the called party from the communication network and forming a voice call network according to the call approval of the called party. The method of claim 8, The calling mode includes an external calling mode, an internet phone calling mode and an premises calling mode, and the calling number is a telephone number in the external calling mode, an IP address in the internet calling mode, and an extension in the premises calling mode. An outgoing call processing method in a key phone system using a premises network, characterized in that the number. A data transmission method in a key phone system using an internal network including at least one server computer connected to a telephone station by a public telephone network and connected to the Internet through a high-speed modem, and a plurality of client computers connected to the server computer through a LAN. , Determining whether a data transmission request of the client computer user is in an external transmission mode; Selecting an internal sender and transmitting data when the data transmission request is not in an external transmission mode; If the data transmission request is an external transmission mode, selecting an internet sender from an internet sender database, and then checking whether the selected internet sender is an internet phone user; Transmitting data to an IP address of an Internet sender stored in an internal storage when the Internet sender is an Internet phone user; And If the Internet sender is not an Internet phone user, receiving an e-mail address or selecting from a database and transmitting a file; and transmitting a file.