KR20110060095A - Network exchange system for relaying subscriber line and method for suppling telecommunication service using the same - Google Patents

Abstract

PURPOSE: A network switching system for relaying subscriber lines and a communication service providing method are provided to offer various services via voices or characters by interlinking an IP network with a telephone switching service. CONSTITUTION: A network switching system for relaying subscriber lines includes a PSTN(Public Switched Telephone network)(110), an IP network(150), a switching system(200), a switch(300), and a telephone subscriber(700). The PSTN transmits voice signals between a caller and a callee. The IP network provides an All IP based high speed multimedia service. The switching system automatically offers a response service. The switch transfers a ring signal, transmitted from the switching system, to the switching system via an unused port(330). The telephone subscriber is one of plural telephone terminals connected to the switch.

Description

Network exchange system for subscriber line relay and method for providing communication service using same {Network exchange system for relaying subscriber line and method for suppling telecommunication service using the same}

The present invention relates to an exchange technology, and more specifically, a user can establish a voice guidance system without a separate equipment by installing a network switching system and a PBX for voice communication through a data communication network, an IP network and a telephone. The present invention relates to a subscriber line relay network switching system for providing various services through voice or text in connection with a switching service, and a communication service providing method using the same.

With the expansion of high-speed communication networks and the development of various multimedia technologies, Internet telephones capable of making phone calls through the Internet network have been commercialized, and these technologies have evolved and developed in various ways.

Voice over Internet Protocol (VoIP) modulates voice into a data signal, so that all or part of the outgoing and incoming segments are either public or private internet networks, or data that includes data transmission methods such as frame relay and ATM. Regardless of the type of terminal such as PC, Phone, IP Phone, etc., through the network, Internet network, and IP network (Internet line), voice transmission signal time delay of both origination and destination is 250 (ms) or less (real time). Say means to let you.

The use of VoIP enables VoIP-based devices such as desktop PCs and gateways to reduce voice and data communication costs, improve existing features, and take advantage of new telephony services with exceptional features.

In other words, VoIP refers to a technology for providing various services using the Internet protocol, which is a voice service made through a public communication network (PSTN).

In addition, VoIP has many services that were not available in the public network, and typical applications include web call centers, instant messaging, computer telephony integration (CTI), and unified messaging system (UMS). Various application services are also under study.

There are various types of Internet phones such as USB phones connected to a computer, IP phones that can be used regardless of the computer, and gateways that connect ordinary phones to Internet phones. It is used in various ways depending on the characteristics of the existing public telecommunications network, such as low-cost call rates.

These technologies are rapidly being commercialized in corporate buildings with the characteristics of Internet telephony as described above due to changes in government policy.

As a result, IP PBXs are mostly installed in large buildings or corporations.

IP PBX is to perform the role of the PBX used in the general public telecommunications network connected to the Internet network, to provide a variety of services through the Internet as described above, as well as the exchange function such as the PBX.

1 is a diagram showing the configuration of an automatic response communication network of a conventional PBX (switch), and FIG. 2 is a diagram for explaining a conventional automatic answering device. Referring to this, the conventional PBX is to use the installed card (see Fig. 1) or to install an automatic answering device on the outside (see Fig. 2) to perform the function of the exchange.

Therefore, the present invention provides a network switching system for relay that can provide a voice call through a data communication network using such a PBX, and a user intends to build a technology for building a voice guidance system without installing additional equipment.

Technical problem of the present invention devised to improve the above problems is to make a network switching system for relay that can provide a voice call through a data communication network, and the user has a separate equipment (Private Branch eXchange: PBX) It is an object of the present invention to provide a subscriber line network switching system for establishing a voice guidance system without installation and a communication service providing method using the same.

In addition, according to another embodiment of the present invention, in connection with the IP network and telephone exchange service to provide a subscriber line relay network switching system that can provide a variety of services through voice or text, and providing a communication service providing method using the same For the purpose of

In addition, according to another embodiment of the present invention, not only provide an interworking solution between one exchange system and another exchange system, but also subscriber line relay for providing an interworking technology between subscribers of the same company distributed in two or more buildings. It is an object of the present invention to provide a network switching system and a communication service providing method using the same.

However, the objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

In the subscriber line relay network switching system according to an embodiment of the present invention for solving the above problems, in the subscriber line relay network switching system including a PSTN, an IP network, a switching system, a switch, and an extension subscriber, When the system receives a voice signal from the caller through the PSTN or the IP network, the system transmits a ring signal to the FXS port connected to the exchange, and the exchange receives the ring signal to guide the voice. When the ring signal is transmitted to a port using the voice guidance, the call is transmitted back to the FXO port of the exchange system, and the exchange system transfers the FXO designated by the voice guidance. When a ring signal is detected at the port, a response service for performing voice guidance to the caller may be performed.

In the subscriber line relay network switching system according to another embodiment of the present invention, the switch system hooks a port corresponding to the extension number when the caller hears the announcement voice and presses the extension number. After the extension number is sent to the exchange using a dual tone multifrequency (DTMF) signal, the port corresponding to the extension number is hooked on to a call transfer to the exchange. A voice call may be connected to an extension subscriber corresponding to the extension number pressed by the caller.

In the subscriber line relay network switching system according to another embodiment of the present invention, the switching system determines whether the extension number is an extension number used by the exchange or an extension number not used by the exchange. In the case of an extension number in another network switching system, the call is connected to the other network switching system.

Communication service providing method using a subscriber line relay network switching system according to an embodiment of the present invention, PSTN, IP network, switching system, switch, a communication service providing method using a subscriber line relay network switching system including an extension subscriber The switching system may include: a first step of transmitting a ring signal to an FXS port connected to the exchange when receiving a voice signal from the caller through the PSTN or the IP network; The exchange transfers the ring signal to the port using the voice guidance to receive the ring signal and to provide voice guidance, and sends a call to the FXO port of the exchange system. A second step of transmitting again; And a third step of performing, by the exchange system, a response service for performing voice guidance to the caller when a ring signal is detected at the FXO port designated as the voice guidance. Characterized in that it comprises a.

Communication service providing method using a subscriber line relay network switching system according to another embodiment of the present invention, if the caller hears the announcement voice and presses the extension number, which is performed after the third step, the switching system, A fourth step of hook flashing a port corresponding to the extension number; Sending, by the switching system, the extension number to the exchange using a dual tone multifrequency (DTMF) signal; And the exchange system hooks up a port corresponding to the extension number to call-transfer to the exchange, thereby making a voice call with the extension subscriber corresponding to the extension number pressed by the caller. A sixth step of allowing to be connected; It characterized in that it further comprises.

Communication service providing method using a subscriber line relay network switching system according to another embodiment of the present invention, if the caller hears the announcement voice and presses the extension number, which is performed after the third step, the switching system, A fourth step of determining whether the extension number is an extension number used by the exchange or an extension number not used by the exchange; And a fifth step of connecting the call to the other network switching system when the extension number is an extension number in the other network switching system. It characterized in that it further comprises.

As described above, according to the subscriber line relay network switching system and a method of providing a communication service using the same, a user may separately use a relay network switching system and a PBX capable of making a voice call through a data communication network. It provides the effect that a voice guidance system can be established without equipment installation.

In addition, according to the subscriber line relay network switching system and the communication service providing method using the same according to another embodiment of the present invention, it is possible to provide a variety of services through voice or text in conjunction with the IP network and telephone exchange service.

In addition, according to a subscriber line relay network switching system and a communication service providing method using the same according to another embodiment of the present invention, not only provides an interworking solution between one switching system and another switching system, but also to two or more buildings. It can provide interworking technology between distributed subscribers of the same company.

Hereinafter, a detailed description of a preferred embodiment of the present invention will be described with reference to the accompanying drawings. In the following description of the present invention, detailed descriptions of well-known functions or configurations will be omitted when it is deemed that they may unnecessarily obscure the subject matter of the present invention.

In the present specification, when one component 'transmits' data or a signal to another component, any one component may directly transmit data or a signal to another component, and at least one other component. This means that data or a signal can be transmitted to other components through the APC.

3 is a diagram showing a subscriber line relay network switching system according to the present invention. Referring to FIG. 3, the subscriber line relay network switching system may include a PSTN 110, an IP network 150, a switching system 200, an exchange 300, and an extension subscriber 700.

Public Switched Telephone Network (PSTN) 110 is a telephone network for general subscription telephone service provided by a telecommunications service provider. Compared to a recently developed public subscription data network (such as a public switched data network) or a private network operated by a user. It means the existing telephone network. The PSTN 110 performs voice signal transmission between the sender and the receiver.

IP network 150 is a high-speed network of a large communication network capable of large-capacity, long-distance voice and data services, and may be, for example, the Internet. In addition, the IP network 150 may be a next-generation wired network for providing a high speed multimedia service based on ALL IP (Internet Protocol).

The exchange system 200 is a system for automatically providing an answer (ARS / IVR) when a voice signal is received from a first caller (not shown) to a public switched telephone network (PSTN) or an IP network 150. By using a card installed in a conventional exchanger (see FIG. 1) or by installing an automatic answering device outside (see FIG. 2), service is possible by connecting to the exchanger 300 without installing additional equipment. It has a feature to make it.

More specifically, when the exchange system 200 detects the voice signal Ring from the PSTN 110, the ring signal (Ring Signal) to an unused port or the corresponding FXS port 250 among the FXS ports connected to the exchange 300. Will be delivered. Meanwhile, FXS of the present invention stands for Foreing Exchange Station and serves as a station port of an existing equipment such as an exchange (PBX) or a key phone system.

Accordingly, the exchange 300 that receives the ring signal (ring signal) transfers the ring signal (ring signal) to the port 330 that does not use among the ports using the voice guidance for voice guidance, exchange system Call 200 is reconnected to FXO 230 of 200. Meanwhile, the FXO of the present invention stands for Foreign Exchage Office and emulates a telephone. Therefore, the partner device connected to the FXO port assumes that a telephone is connected to its switch port (FXS). Thus, the FXO port sends on-hook and off-hool signals as if it were a telephone.

When the ring signal (Ring Signal) is detected at the port designated as voice guidance (FXO 230), the exchange system 200 immediately starts voice guidance to the first caller (not shown).

When the first caller (not shown) hears this guide voice and presses the extension number, the exchange system 200 hooks the port corresponding to the extension number, and then transfers the extension number to the switch 300, DTMF (dual). When the signal is transmitted using a tone multifrequency signal and the DTMF signal is transmitted, the port corresponding to the extension number is hooked on. Since the switch 300 becomes a call transfer, the call 300 connects the voice call with the extension subscriber pressed by the first caller (not shown).

Private Branch eXchange (PBX: 300) is a generic term for internal exchanges that provide internal communication services, such as telephones and faxes, in the enterprise or on the premises. . The exchange 300 receives a ring signal from the exchange system 200 and rings the exchange system 200 through a port 330 that is not used among the ports using voice guidance for voice guidance. Deliver a ring signal.

In addition, when the exchange 300 receives the DTMF signal to the port corresponding to the extension number received from the exchange system 200, the switch 300 connects the voice call with the extension subscriber pressed by the first caller (not shown).

Extension subscriber 700 refers to a plurality of telephone terminals connected to one switch 300.

4 is a diagram illustrating a subscriber line relay network switching system according to another embodiment of the present invention. 3 and 4, the subscriber line relay network switching system includes a PSTN 110, an IP network 150, a switching system 200, a switch 300, an extension subscriber 700, and an external switching system 900. ) May be included.

The exchange system 200 functions the same as the exchange system 200 of FIG. 3. In addition, when the exchange system 200 receives a voice signal from the PSTN 110 or the IP network 150, when the first caller (not shown) presses the extension number, the entered extension number is exchanged 300 It is determined whether the extension number is used in or the extension number is not in the switch and the extension number in the other network switching system 900 in the network.

Thereafter, the switching system 200 connects a call to the corresponding network switching system 900.

Accordingly, the present invention separates the general trunk line and the voice guide line from the outside without the installation of a separate network exchange system and switch 300 for the voice communication through the IP network 150 that is a data communication network It provides a voice guidance system for connecting the response to the voice call to the switching system 200 to the voice guide line through the switch 300.

5 is a flowchart illustrating voice guidance and extension subscriber connection according to a voice communication connection request in a method for providing a communication service using a subscriber line relay network switching system according to an exemplary embodiment of the present invention. 3 to 5, the switching system 200 receives a voice signal from a first caller (not shown) to a public switched telephone network (PSTN) or an IP network 150 (S1).

Thereafter, the exchange system 200 detects a ring signal at the FXO 210 port and a call connection message from the IP network 150 (S3).

The exchange system 200 transmits a ring signal to the unused port or the corresponding FXS port 250 among the FXS ports connected to the exchange 300 (S5).

Accordingly, the exchange 300 receiving the ring signal transmits a ring signal to a port 330 (ARS / IVR port) that is not used among the ports using the voice guidance for voice guidance. Transfer (S7).

According to step S7, a call is reconnected to the FXO 230 of the exchange system 200, and the exchange system 200 connects a ring signal to the port designated by voice guidance (FXO 230). ) Is detected, immediately start voice guidance to the first caller (not shown) (S9).

When the first caller (not shown) hears this guide voice and presses the extension number (S11), the exchange system 200 hooks the port corresponding to the extension number (Hook Flash) (S13), and then the extension number is exchanged ( Sending a DTMF (dual tone multifrequency) signal to the 300 (S15), when the DTMF signal is transmitted, the hook on the port corresponding to the extension number (Hook On) (S17).

Since the switch 300 becomes a call transfer, the voice call is connected with the extension subscriber pressed by the first caller (not shown) (S19).

6 is a flowchart illustrating voice guidance and connection to another network switching system according to a voice communication connection request in a method for providing a communication service using a subscriber line relay network switching system according to another embodiment of the present invention. 3 to 6, the switching system 200 receives a voice signal from a first caller (not shown) to a public switched telephone network (PSTN) or an IP network 150 (S21).

Thereafter, the exchange system 200 detects a ring signal at the FXO 210 port and a call connection message from the IP network 150 (S23).

The exchange system 200 transmits a ring signal to the unused port or the corresponding FXS port 250 among the FXS ports connected to the exchange 300 (S25).

Accordingly, the exchange 300 receiving the ring signal transmits a ring signal to a port 330 (ARS / IVR port) that is not used among the ports using the voice guidance for voice guidance. Transfer (S27).

According to step S27, a call is reconnected to the FXO 230 of the exchange system 200, and the exchange system 200 connects a ring signal to a port designated by voice guidance (FXO 230). ) Is detected, immediately start voice guidance to the first caller (not shown) (S29).

When the first caller (not shown) hears this guide voice and presses the extension number (S31), the exchange system 200 is the extension number used by the switch 300 or the extension number is not present in the switch. If the extension number in the other network switching system 900 in the network network is connected to the call (Call) toward the network switching system (900) (S33).

FIG. 7 is a flowchart specifically illustrating a step S33 of a method of providing a communication service using a subscriber line relay network switching system according to FIG. 6. Referring to FIGS. 3 to 7, when the first caller (not shown) hears this guide voice and presses the extension number according to step S31 of FIG. It is determined whether the extension number is the extension number used by the switch 300 or the extension number is a number which does not exist in the switch and is an extension number in another network switching system 900 in the network (S53).

When the exchange system 200 is an extension number used by the exchange 300, the exchange system 200 hooks a port corresponding to the extension number (Hook Flash) (S55), and then exchanges the extension number 300 The DTMF (dual tone multifrequency) signal is sent to the side (S57), and when the DTMF signal is transmitted, the port corresponding to the extension number is hooked on (S59).

Accordingly, the switch 300 connects the voice call with the extension subscriber pressed by the first caller (not shown) because it becomes a call transfer (S61).

On the other hand, the exchange system 200 when the corresponding extension number is not in the switch and is the extension number in the other network switching system 900 in the network, after forwarding the call message to the other network switching system (900) (S71) ), And performs a call relay between the caller (not shown) and the other network exchange system 900 (S73).

Accordingly, the present invention separates the general trunk line and the voice guide line from the outside without the installation of a separate network exchange system and switch 300 for the voice communication through the IP network 150 that is a data communication network It provides a voice guidance system for connecting the response to the voice call to the switching system 200 to the voice guide line through the switch 300.

Although the contents of the present invention have been described with reference to one embodiment shown in the drawings, this is merely exemplary, and those skilled in the art may realize various modifications and other equivalent embodiments therefrom. Will understand. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

According to the subscriber line relay network switching system of the present invention and a method of providing a communication service using the same, a voice guidance system is constructed without the user installing a separate network switching system and a PBX for voice communication through a data communication network. It not only provides various services through voice or text in connection with IP network and telephone exchange service, but also provides interworking solution between one switching system and another switching system, and the same distributed in two or more buildings. It is possible to provide more advanced technology by establishing interworking technology between the subscribers of the company.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a diagram showing the configuration of an automatic response communication network of a conventional PBX (switch).

2 is a view for explaining a conventional automatic answering device.

3 is a diagram showing a subscriber line relay network switching system according to the present invention;

Figure 4 is a diagram showing a subscriber line relay network switching system according to another embodiment of the present invention.

5 is a flowchart illustrating voice guidance and extension subscriber connection according to a voice communication connection request in a method of providing a communication service using a subscriber line relay network switching system according to an exemplary embodiment of the present invention.

 FIG. 6 is a flowchart illustrating voice guidance and connection to another network switching system according to a voice communication connection request in a method for providing a communication service using a subscriber line relay network switching system according to another embodiment of the present invention.

 FIG. 7 is a flowchart specifically illustrating a step S33 in a method of providing a communication service using a network switching system for subscriber line relay according to FIG. 6.

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

110: PSTN 150: IP network

200: exchange system 300: exchanger

700: subscriber

Claims (6)

In a subscriber line relay network switching system including a PSTN, an IP network, a switching system, an exchange, and an extension subscriber, When the exchange system receives a voice signal from the caller through the PSTN or the IP network, the exchange system transmits a ring signal to the FXS port connected to the exchange, The exchange transfers the ring signal to the port using the voice guidance to receive the ring signal and to provide voice guidance, and sends a call to the FXO port of the exchange system. Send again, And the switching system performs a response service for performing voice guidance to the caller when a ring signal is detected at the FXO port designated by the voice guidance. The method of claim 1, wherein the exchange system, When the caller hears the announcement voice and presses the extension number, the device flashes the port corresponding to the extension number. After the extension number is sent to the exchange using a dual tone multifrequency (DTMF) signal, the port corresponding to the extension number is hooked on to a call-transfer to the exchange, so that the caller is transferred. And a voice call connected to an extension subscriber corresponding to the extension number pressed by the subscriber. The method of claim 2, wherein the exchange system, Determining whether the extension number is an extension number used by the exchange or an extension number not used by the exchange; In case of an extension number in another network switching system, a subscriber line relay network switching system for connecting a call to the other network switching system. In the communication service providing method using a subscriber line relay network switching system including a PSTN, an IP network, a switching system, a switch, and an extension subscriber, The switching system, when receiving a voice signal from the caller via the PSTN or the IP network, a first step of transmitting a ring signal (Ring Signal) to the FXS port connected to the switch; The exchange transfers the ring signal to the port using the voice guidance to receive the ring signal and to provide voice guidance, and sends a call to the FXO port of the exchange system. A second step of transmitting again; The exchange system, if a ring signal (Ring Signal) is detected at the FXO port designated by the voice guidance, performing a response service for performing voice guidance to the caller; Communication service providing method using a subscriber line relay network switching system comprising a. The method of claim 4, wherein the step is performed after the third step, A fourth step of, when the caller hears the guide voice and presses the extension number, the switching system hooks a flash port corresponding to the extension number; Sending, by the switching system, the extension number to the exchange using a dual tone multifrequency (DTMF) signal; And The switching system performs a call on the port corresponding to the extension number to call-transfer to the exchange so that a voice call with the extension subscriber corresponding to the extension number pressed by the caller is made. A sixth step of connecting; Communication service providing method using a subscriber line relay network switching system further comprising a. The method of claim 4, wherein the step is performed after the third step, A fourth step of, when the caller hears the guide voice and presses an extension number, the exchange system determines whether the extension number is an extension number used by the exchange or an extension number not used by the exchange; And The switching system, if the extension number in the other network switching system, the fifth step of performing a call (Call) to the other network switching system; Communication service providing method using a subscriber line relay network switching system further comprising a.

Images