KR20020001940A - Network switching system for relaying subscriber line and method for offering communication service using the same - Google Patents

Abstract

PURPOSE: A network exchange system for subscriber line relay and a method for providing a communication service using the same are provided, which provide a telephone and data communication service flexibly to the subscriber, by providing a voice communication through a VoIP(Voice over Internet Protocol) method or the prior PSTN(Public Switched Telephone Network). CONSTITUTION: An MP-LAN(Multi Protocol-LAN)(42) performs an FXO(Foreign Exchange Office)(501) function to be connected with a local subscriber line, and performs an FXS(Foreign Exchange Station)(503) function to be connected with an internal subscriber. And the system comprises a digital signal processing(DSP) module(506) compressing voice to G.723(5.3kbps/6.3kbps) and G.729A(8.0kbps) to perform the VoIP function, and an Ethernet port(508) to transmit the compressed voice through a LAN and a T/E1 trunk module(505) to be connected with a PABX(Private Automatic Branch Exchange). And a switch module(502) is embedded to exchange voice pulse code modulation(PCM) data between the FXS module, the FXO module, the DSP module and the E/T1 trunk module. And an xDSL(Digital Subscriber Line) module(504) is embedded which can transmit voice of low frequency band and data of high frequency band.

Description

NETWORK SWITCHING SYSTEM FOR RELAYING SUBSCRIBER LINE AND METHOD FOR OFFERING COMMUNICATION SERVICE USING THE SAME}

The present invention relates to a network switching system for subscriber line relay, a method of providing a communication service using the same, and a computer-readable recording medium recording a program for realizing the method. Particularly, the present invention relates to a digital network through a subscriber line. Subscriber line relay network switching system that provides digital subscriber line (xDSL), Voice over Internet Protocol (VoIP) and subscriber relay switching function, and a method and method for providing the communication service using the same The present invention relates to a computer-readable recording medium having recorded thereon a program.

1 to 3 is an exemplary configuration diagram of a conventional telephone and data communication network.

The telephone line of the existing general subscriber is connected to the trunk line as shown in FIG. 1, and the data communication network is configured as shown in FIG. In addition, as shown in FIG. 3, it is possible to combine a data line and a telephone line and transmit the data line on a single subscriber line.

1 is an exemplary configuration diagram of a conventional telephone communication network.

In FIG. 1, subscriber phones 11 and 13 of a general telephone line may be connected to subscriber lines of a national exchange to receive telephone service by accessing an existing public switched telephone network (PSTN) 12.

2 is an exemplary configuration diagram of a conventional data communication network.

It includes a data network (Data Network, 22) for connecting data communication with the terminals (21, 23) of the general subscriber of the conventional data communication network.

The general subscriber uses a data communication service by connecting to a data communication network, and as shown in FIG. 2, a data communication service is provided using a modem, an xDSL line, or another data communication line.

3 is an exemplary configuration diagram of a conventional digital subscriber line communication network for providing telephone and data communications.

The scheme implemented in FIG. 3 is a scheme in which the existing data and telephone lines can be serviced using a single subscriber line (1 pair). The scheme is implemented using the xDSL scheme. The xDSL module 32 is connected to the local exchange of the PSTN 31 via the CO line subscriber line (A side), which is a general subscriber line, and through each telephone line (B side) which is an extension subscriber line connected to the xDSL module (32). It is connected to the subscriber unit (SU) 33 installed in the.

In addition, the switch hub 36 is connected to a local area network (LAN) 48 through a dedicated line, and the xDSL module 32 is connected to each port of the switch hub 36. Connected with One port (P0 ~ Pn) of switch hub (Switch HUB) 36 connected to xDSL module 32 and one subscriber line (S0 ~ Sn) connected to PSTN 31 through trunk line subscriber line (A side) It is matched with 1 and connected to the SU equipment 33 through the telephone lines L0 to Ln of the extension subscriber line B side.

The SU equipment 33 is installed in each home, and equipment such as a telephone 34 and a personal computer (PC) 35 in the home is connected.

In FIG. 3, the incoming voice over the PSTN 31 is transmitted through the xDSL device 32 in the low frequency band and then transmitted to the subscriber's telephone line. The low frequency band voice arriving at the subscriber unit 33 through the subscriber line is connected to the subscriber's telephone 34 through a filtering process at the SU 33.

In addition, data input through the switch hub 36 is loaded on the high frequency band through the xDSL device 32 and then transmitted to the subscriber line. The high frequency band data arriving at the SU 33 through the subscriber line is connected to the PC 35 of the subscriber home through a filtering process at the SU 33. When the subscriber transmits voice and data through the telephone 34 or the PC 35, the process is reversed.

Using the above method, it is possible to simultaneously service voice and data using existing subscriber telephone lines.

By the way, the above method is implemented to provide telephone and voice services to subscribers, but voice communication between subscribers must use public switched telephone network (PSTN).

Since it has to go through, the call processing procedure is complicated and there is a problem of paying a line usage fee of a separate public switched telephone network (PSTN).

In particular, in a situation where data communication can be performed at a lower cost than voice communication, an existing communication user should have a choice and use in voice communication, but there is a problem in that such a service cannot be provided.

The present invention has been made to solve the above problems, subscriber line relay for providing a virtual telephone network so that a general telephone subscriber can make a voice call through a data communication network even without a public switched telephone network (PSTN) It is an object of the present invention to provide a network switched system, a method of providing a communication service using the same, and a computer-readable recording medium having recorded thereon a program for realizing the method.

That is, the present invention connects each general subscriber via a local network (telephone network + data communication network) and provides voice communication through Voice over IP (VoIP) method according to a user's selection, By providing voice communication through the existing public switched telephone network (PSTN), a subscriber line relay network switching system that provides flexible telephone and data communication services to general subscribers, and a method and a program for realizing the method are recorded. Its purpose is to provide a computer readable recording medium.

1 is an exemplary configuration diagram of a conventional telephone communication network.

2 is an exemplary configuration diagram of a conventional data communication network.

3 is an exemplary configuration diagram of a conventional digital subscriber line communication network for providing telephone and data communications.

4 is an exemplary configuration diagram of a communication network including a subscriber line relay network switching system according to the present invention;

5 is a diagram illustrating an embodiment of a network switching system for subscriber line relay according to the present invention;

Figure 6 is a detailed block diagram of an embodiment of a digital subscriber line (xDSL) module in a subscriber line relay network switching system according to the present invention.

7 is a detailed block diagram of an embodiment of a subscriber unit (SU) in a subscriber line relay network switching system according to the present invention.

8 is another embodiment of the subscriber line relay network switching system according to the present invention.

9 is an exemplary view of a table utilized to match telephone numbers and Internet addresses in the local CPI in accordance with the present invention.

10 is a flow diagram of an embodiment of a data transmission request processing from a subscriber according to the present invention.

11 is a flow diagram of an embodiment of a process for processing a voice communication connection request from a data communication network in accordance with the present invention.

12 is a flow diagram of an embodiment of a process for processing a voice communication connection request from a public switched telephone network according to the present invention.

* Explanation of symbols for the main parts of the drawings

41: public switched telephone network (PSTN) 42: MP-LAN

43: subscriber unit (SU) 44: telephone

45: personal computer (PC) 46: switch hub

47: Router 48: LAN

The system of the present invention for achieving the above object, network switching for subscriber line relay for providing voice communication and data communication using a data network and an extension subscriber line without going through a public switched telephone network (PSTN) In a system, a voice communication signal and a data communication signal from a subscriber are transmitted through a single subscriber line, and the voice communication signal and data communication signal received through the subscriber line are separated according to a frequency band to the subscriber. Subscriber line processing means for providing; The voice communication signal and the data communication signal received from the subscriber line processing means through the extension subscriber line are separated and transmitted according to the frequency band, and the received voice communication signal or data communication signal is transmitted through the subscriber subscriber line through the subscriber line processing. Digital subscriber line processing means for transmission to the means; And exchange means for digitally processing the voice communication signal from the digital subscriber line processing means and processing the digital signal, and receiving the digital signal processed voice communication signal from the data communication network and transmitting the voice communication signal to the digital subscriber line processing means. It is characterized by including.

Further, another system of the present invention is a subscriber line relay network switching system for providing voice communication and data communication, wherein the voice communication signal and data communication signal from a subscriber are transmitted through one subscriber line. Subscriber line processing means for separating a voice communication signal and a data communication signal received through an extension subscriber line according to a frequency band and providing the same to the subscriber; The voice communication signal and the data communication signal received from the subscriber subscriber line are separated according to the frequency band, and the voice communication signal is transmitted to the voice communication line, the data communication signal is transmitted to the data communication network, and the voice communication signal and data transmitted to the subscriber. Digital subscriber line processing means for receiving a communication signal and transmitting it through said extension subscriber line; And receiving a voice communication signal through the voice communication line and transmitting the voice communication signal through the voice communication network and the data communication network according to the subscriber's line selection, and receiving the voice communication signal from the voice communication network or the data communication network. Characterized in that it comprises an exchange means for transmitting through.

In still another aspect of the present invention, there is provided a subscriber line relay network switching system comprising: switching means for switching to receive a control signal for a received voice communication signal and to selectively transmit it to a subscriber station, a voice communication network, and a data communication network; Digital signal processing means for receiving the voice communication signal to be transmitted through the data communication network from the switching means, compressing and transmitting the received signal, and recovering the voice communication signal received through the data communication network to the switching means; And a control signal for switching the voice communication signal input to the switching means according to transmission information of the voice communication signal, and a destination address for the voice communication signal received from the digital signal processing means and the data communication network. It characterized in that it comprises a control management means for matching and transmitting.

In addition, the first method of the present invention is applied to a subscriber line relay network switching system for providing voice communication and data communication using a data network and an extension subscriber line without going through a public switched telephone network (PSTN). A communication service providing method comprising: a first step of receiving a communication signal transmission request from a subscriber and confirming a signal band; A second step of performing data communication by transmitting the data communication signal to the data network as a result of the checking of the first step; A third step of determining whether it is a transmission request to an internal subscriber using the switching system if it is a voice communication signal as a result of the checking of the first step; A fourth step of performing a call connection to the internal subscriber's terminal if it is the transmission request to the internal subscriber as a result of the determination of the third step; And a fifth step of processing the voice communication through the data network by performing data processing to transmit a voice communication signal to the data network if it is not a transmission request to an internal subscriber as a result of the determination of the third step. It is done.

In addition, the second method of the present invention is applied to a subscriber line relay network switching system for providing voice communication and data communication using a data network and an extension subscriber line without going through a public switched telephone network (PSTN). A communication service providing method comprising: a first step of receiving a voice communication signal in a data format from an external data network and confirming that the called party is an internal subscriber to perform call setup with the calling party; Receiving a voice communication signal of a received data format and restoring it; And a third step of transmitting the restored voice communication signal to the communication terminal of the subscriber corresponding to the called party so that communication is performed.

In addition, a third method of the present invention is a communication service providing method applied to a subscriber line relay network switching system for providing voice communication and data communication, comprising: a first request for confirming a signal band by receiving a communication signal transmission from a subscriber; step; A second step of transmitting data to the data network if the data communication signal band is determined as the result of the first step; A third step of checking a destination and a requested transmission scheme of the voice communication signal if the result of the checking of the first step is a voice communication signal band; A fourth step of performing voice communication through the public switched telephone network by transmitting the voice communication signal to the public switched telephone network if the voice communication connection request using the public switched telephone network is a result of the checking in the third step; A fifth step of performing voice communication through the data network by processing a data and transmitting a voice communication signal to the data network if the voice communication connection request using the data network is a result of the checking in the third step; And a sixth step of performing a voice connection by performing a call connection to the terminal of the internal subscriber if the transmission request to the internal subscriber connected to the switching system is a result of the checking of the third step.

In addition, the method of the present invention is a communication service providing method applied to a subscriber line relay network switching system for providing voice communication and data communication, and receives a voice communication connection request from a public switched telephone network and receives a corresponding internal subscriber. Connecting a telephone call to the terminal of the first step; Receiving a voice communication signal in data format from a data network and confirming that the called party is an internal subscriber to perform call setup with the calling party; Receiving a voice communication signal of a received data format and restoring it; And a fourth step of transmitting the restored voice communication signal to the communication terminal of the subscriber corresponding to the called party so that communication is performed.

The present invention also provides a subscriber line relay network switching system including a processor, comprising: a first function of receiving a request for communication signal from a subscriber and confirming a signal band; A second function of transmitting a data communication signal to the data network as a result of confirming the first function to perform data communication; A third function of determining whether it is a request for transmission to an internal subscriber using the switching system if it is a voice communication signal as a result of confirming the first function; A fourth function of performing a call connection to the terminal of the internal subscriber when the transmission of the request to the internal subscriber is determined as the third function; And a fifth function of processing a data to transmit a voice communication signal to the data network so that voice communication through the data network is performed if the transmission is not a request to an internal subscriber as a result of the determination of the third function. Provide a computer readable recording medium having recorded thereon.

The present invention also provides a subscriber line relay network switching system including a processor, comprising: a first function of receiving a request for communication signal from a subscriber and confirming a signal band; A second function of transmitting a data communication signal band to the data network if the first function confirms the data communication signal band; A third function of checking a destination of the voice communication signal and a requested transmission scheme if the first function confirms the voice communication signal band; A fourth function of transmitting the voice communication signal to the public switched telephone network so as to perform voice communication through the public switched telephone network if the voice communication connection request using the public switched telephone network is a result of the checking of the third function; A fifth function of processing a data to transmit a voice communication signal to the data network if the voice communication connection request using the data network is performed as a result of the check of the third function; And a program for realizing a sixth function for performing voice connection by performing a call connection to the terminal of the internal subscriber if the transmission request to the internal subscriber connected to the exchange system is a result of the checking of the third function. Provide a readable recording medium.

The present invention also provides a subscriber line relay network switching system including a processor, comprising: a first function of receiving a voice communication connection request from a public switched telephone network and connecting a telephone call to a terminal of a corresponding internal subscriber; A second function of receiving a voice communication signal of a data format from a data network and confirming that the called party is an internal subscriber to perform call setup with the calling party; A third function of receiving and restoring a voice communication signal in a received data format; And a computer readable recording medium having recorded thereon a program for realizing a fourth function of communicating the restored voice communication signal to the communication terminal of the subscriber corresponding to the called party to allow communication.

The present invention provides the private subscriber branch (PABX) function to the subscribers in the local area by attaching the system equipment to the subscriber track and is different from one local area. The present invention relates to a system and an implementation method for performing a subscriber network switching function combining a telephone network and a data communication network for establishing a virtual private network through a VoIP function between subscribers in a local area.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

A communication network configuration configured to achieve the object of the present invention is represented in FIG. 4, and a configuration of an exchange system for VoIP and a general subscriber connection is shown in FIG. 5.

4 is an exemplary configuration diagram of a communication network including a network switching system for subscriber line relay according to the present invention.

In FIG. 4, a device called an MP-LAN (MP-LAN) is a device that performs a Voice over IP (VoIP) function and a Digital Subscriber Line (xDSL) function. Subscriber unit (SU) 43 divides voice and data input and output through the extension subscriber line and connects to telephone 44 for voice and connects to personal computer (PC) for data. Perform the distribution function. In addition, the trunk line subscriber line means a telephone line connected to a general subscriber in a public switched telephone network (PSTN) 41, and the subscriber line is a single subscriber connected to a general subscriber in the MP-LAN 42. It means the track.

5 is a configuration diagram of an embodiment of a network switching system for subscriber line relay according to the present invention.

In FIG. 5, the MP-LAN 42 performs a foreign exchange office (FXO) function to connect with a CO line, and connects with an extension subscriber. 503) Perform the function.

In addition, the digital signal processing (DSP: Digital Signal Processing) module 506 and the compressed voice are compressed to G.723.1 (5.3kbps / 6.3kbps) and G.729A (8.0kbps) to perform the VoIP function. It consists of an Ethernet port 508 connected to transmit via a LAN and a T1 / E1 trunk module 505 to connect with a local exchange or a PABX. The switch module 502 is used to exchange voice pulse modulation (PCM) data between the FXS module 503, the FXO module 501, the DSP module 506, and the E1 / T1 trunk module 505. It is built. In addition, the xDSL module 504 is embedded to transmit voice in a low frequency band and transmit data in a high frequency band. Instead of the FXO module 42, an E & M module that connects a PBX and a VoIP router with a direct trunk may be used.

As shown in FIG. 6 shown in the following description, the xDSL module 504 transmits a voice signal of the FXS 503 through a low pass filter and data through an Ethernet port. It is a module configured to simultaneously load voice and data on the station subscriber line through.

The subscriber unit (SU) 43 described in FIG. 7 allows the low frequency band of voice to be transmitted to the telephone 44 through the low pass filter, and the data is transmitted to the PC 45 through the high pass filter. . The configuration of the SU 43 is as shown in FIG. 7 to be described below.

The configuration position of this equipment connects the CO line subscriber line connected to the general subscriber to the FXO 501 and the line connected to the general subscriber house to the FXS 503 of the equipment. And the telephone number of each subscriber (telephone number assigned to general subscriber in PSTN network) uses the existing telephone number as it is. After the configuration of this equipment, the telephone service is performed according to the following process.

In Fig. 4, the general subscriber 0 (ex. Telephone number: 993-1234) using the SU0 43 of the MP-LAN0 42 uses the SUn 43 of the MP-LANn 42 (ex) The process for calling telephone number 903-1234 through the PSTN 41 is as follows.

The moment the subscriber 0 off hooks the phone, the FXS module 503 detects the subscriber's off hook and transmits a dial-toned to the subscriber. After subscriber 0 hears a dial-tone and presses the telephone number (903-1234) of the other subscriber (general subscriber n), the local processing unit (CPU: Central Processing Unit, 507) of the MP-LAN0 42 is pressed. After receiving the subscriber subscriber's telephone number, off-hooks FXO0 501 of the CO line subscriber line 0 assigned to subscriber 0.

When a dial-tone is transmitted from an exchange of the PSTN 41 connected to the FXO0 501, the local CPU 507 of the MP-LAN0 42 sends a counterpart phone number 903 to the exchange of the PSTN 41. -1234) is transmitted as a dual tone multi-frequency signal (DTMF), and then a channel of the FXS0 503 and a channel of the FXO0 501 are connected through a switching module 502.

When the PSTN 41 transmits a ring signal to the trunk line subscriber line n of the telephone number 903-1234 assigned to the subscriber n, the FXOn 501 receives the ring signal and sends the received result to the local area of the MP-LANn 42. The transfer is made to the CPU 507.

The local CPU 507 of the MP-LANn 42 senses a ring signal input to the trunk line subscriber line n, and then transmits a ring signal to the subscriber n via the FXSn 503 assigned to the subscriber n.

When subscriber n off-hooks phone 44, local CPU 507 detects this and off-hook FXOn 501 and then swaps the channel of FXSn 503 with the channel of FXOn 501. The call is made by connecting through a switching module 502.

The order of the call release is that subscriber 0 or subscriber n on-hooks the phone 44 and then detects this on the local CPU 507 of MP-LAN0 42 or the local CPU of MP-LANn and FXO0. 501 or FXOn on-hook.

In the above case, the subscriber 0 and the subscriber n connected to this equipment are connected through the PSTN 41. In the following case, the subscriber 0 and the subscriber n receive VoIP service through the data network.

The moment the subscriber 0 off-hooks the phone, the FXS module 503 detects the off-hook of subscriber 0 and sends a dial-tone to the subscriber. Subscriber 0 listens to the dial-tone and attaches an identifier (* or #) to the subscriber (general subscriber n) after the telephone number of the other subscriber (general subscriber n) through the VoIP service (ex. 903-1234 * or 903-1234 #).

The local CPU 507 of the MP-LAN0 42 knows the IP (Internet Protocol) address of the MP-LANn to which the other subscriber (subscriber n), which recognizes the subscriber's telephone number and identifier, is connected through a database (DB). Set up MP-LANn and call through data network (using H.323 protocol).

After receiving the telephone number of the subscriber n through the data network in the MP-LANn, the local CPU 507 of the MP-LANn transmits a ring signal to the subscriber n through the FXSn 503 assigned to the subscriber n. When subscriber-n off-hooks the phone, MP-LANn's local CPU 507 detects this and transmits the result to MP-LAN0 through the data network, while at the same time the voice channel of FXSn assigned to subscriber-n. Is connected to the DSP module 506 of the MP-LANn through a switching module (502).

The local CPU 507 of the MP-LAN0 connects the voice channel of the FXO0 504 assigned to the subscriber 0 with the result received at the MP-LANn to the DSP module 506 through the switching module 502.

The DSP module 506 of the MP-LAN0 compresses the voice of the subscriber 0 input through the switching module 502, and the local CPU 507 compresses the compressed voice data via the Ethernet port 508 via the data communication network. Transmit to MP-LANn.

The local CPU 507 of the MP-LANn inputs the voice of the subscriber 0 input through the data communication network to the DSP module 506. The DSP module 506 of the MP-LANn recovers the compressed voice data arriving from the MP-LAN0 and transmits it to the FXSn 503 through the switching module 502, and the FXSn 503 transmits the voice to the subscriber n. do. At the same time, the DSP module 506 of the MP-LANn compresses the voice of the subscriber n that is input through the switching module 502, and the local CPU 507 transmits the compressed voice data to the MP-LAN0 through the Ethernet port 508. do.

The local CPU 506 of the MP-LAN0 inputs the voice of the subscriber n inputted through the data network to the DSP module 506. The DSP module 506 of the MP-LAN0 recovers the compressed voice data arriving from the MP-LANn and transmits it to the FXS0 through the switching module 502, and the FXS0 transmits this voice to the subscriber n.

Through the above process, subscribers 0 and n can transmit voice and fax (FAX) using a data communication network without passing through the PSTN 41.

Looking at the above embodiment, the FXO 501, the switch module 502, the FXS 503, the E1 / T1 trunk module 505, the DSP module 507, the local CPU module 507, and the Ethernet port 508 Has been added to existing digital subscriber line (xDSL) systems to enable user-selective voice communications.

As described in the above embodiment, in the figure, the local CPU 507 connected to the DSP module 506 and the Ethernet port 508 controls and processes the entire MP-LAN 42. The connection is indicated as shown in the figure because the voice communication signal is connected through such a path.

6 is a detailed block diagram of an embodiment of a digital subscriber line (xDSL) module in a network switching system for subscriber line relay according to the present invention.

The xDSL module 504 includes a low pass filter (601), a high pass filter (602), a converter (A / D, D / A Converter, 603), and an Ethernet port (604). ).

As described above, since the voice signal transmitted from the subscriber is a low frequency band, it passes through the low pass filter 601 and is transmitted to the FXS 503. Since the data signal transmitted from the subscriber uses a high frequency band, the high pass filter After passing through 602 and performing analog / digital signal variation in converter 603, it is sent to the switching hub via Ethernet port 604.

The reverse is also true.

7 is a detailed block diagram of an embodiment of a subscriber unit (SU) in a subscriber line relay network switching system according to the present invention.

The subscriber unit (SU) 43 includes a low pass filter (701), a high pass filter (702), a converter (A / D, D / A converter, 703), and an Ethernet transceiver. (Ethernet transceiver, 704).

The low frequency voice signal arriving through the extension subscriber line passes through the low pass filter 701 to reach the telephone 44.

Again, the high frequency data signal arriving through the extension subscriber line reaches the computer 45 via the high pass filter 702, the converter 703, and the Ethernet transceiver 704.

In the reverse case, the voice signal from the telephone 44 is removed through the low pass filter 701, and then transmitted through the extension subscriber line, and the data signal from the computer 45 is transferred to the Ethernet transceiver 704. After conversion, the converter 703 converts the analog signal into a high-frequency analog data signal through the high pass filter 702 and is transmitted through the extension subscriber line.

6 and 7, the data communication in the subscriber line relay network switching system according to the present invention will be described.

The case where the general subscriber connected to the subscriber unit (SU) 43 performs data communication through the PC 45 rather than the telephone is as follows.

As shown in FIG. 6, data input from a switching hub is converted into a TTL signal through an Ethernet port 604, and data converted into a TTL signal is converted into a digital / TTL signal. The analog converter 603 converts the digital signal into an analog signal and transmits the signal through a high pass filter 602.

The data arriving at the SU 43 from the xDSL module 504 via the extension subscriber line passes through the high pass filter 702 of the SU 43 and then is converted into a digital signal by the analog / digital converter 703. After conversion, it is transmitted to the PC 45 via the Ethernet transceiver of the SU 43. This data also exists in the high frequency band and thus does not pass through the low pass filter 701 and thus does not affect the subscriber phone 44.

On the contrary, the signal transmitted from the PC 45 is transmitted to the switching hub through the same process as the above case.

8 is a configuration diagram of another embodiment of a subscriber line relay network switching system according to the present invention.

FIG. 8 is a scheme in which a general subscriber can use a telephone through the PSTN 81 when a malfunction or failure of the equipment and power of the equipment are turned off when the equipment is used.

In FIG. 8, when the power of the MP-LAN is turned off or the local CPU of the MP-LAN malfunctions, the relay control module 86 uses a relay control signal to relay the relay0 signal. 82 of 1) and 1 of relay module 0 '(relay0', 88) are connected so that general subscribers can make normal phone calls. Since this method is set between each FXS 84 and FXO 83, each subscriber can normally use a telephone or fax (FAX) even in the case of power-off or malfunction of the local CPU.

In addition, when the local CPU operates normally, the relay module 0 (relay0, 82) is connected through 1 ', and the relay module 0' (relay0 ', 88) is also connected through 1'.

9 is an exemplary view of a table used to match a phone number and an Internet address in a local CPI according to the present invention.

Local CPU of MP-LAN receives voice communication connection request from network or subscriber by phone number, and local CPU identifies the table and checks the corresponding Internet Protocol (IP) address. To transmit voice communication signals. On the contrary, when a voice communication connection is requested to an IP address through a network, the corresponding telephone number is checked to control the call connection to the user.

As described above, 24 subscribers are basically connected to the MP-LAN, but modification thereof is easy.

10 is a flowchart illustrating a process of processing a data transmission request from a subscriber according to the present invention.

First, the xDSL module 1001 checks the communication signal transmission request from the subscriber, and determines whether it is a voice communication signal or a data communication signal (1001). As a result of the determination, if it is a data communication signal, the data signal is transmitted to the switching hub 46 through the xDSL module 504 (1002). The switching hub 46 receives the data communication signal and transmits it by connecting to the data network (1003).

As a result of determining whether the xDSL module 1001 is a voice communication signal or a data communication signal, if it is a voice communication signal, the voice communication signal is transmitted to the FXS 503 (1004). The local CPU 507 checks the number pressed by the subscriber for the voice communication signal entering the FXS 503 (1005). As a result of the check, the local CPU 507 controls the switch module 502 to connect the voice communication signal to the FXO 501 or the E1 / T1 trunk 505 (1006). The FXO 1007 or the E1 / T1 trunk 505 connects the voice communication signal to the public switched telephone network (PSTN) 41 so that the telephone call is transferred (1007).

The local CPU 507 checks the number pressed by the subscriber for the voice communication signal entering the FXS 503, and if the number is connected to the internal subscriber, the local CPU 507 controls the switch module 502 to control the internal subscriber. A connection is made to the FXS 503 of the called party so that a connection is established between the terminals (1008). The called party's FXS 503, which is connected to the receiver, forwards the call connection request to the subscriber (1009). Here, the internal subscriber is a subscriber using the same switch module 502. In this case, there is no need to transmit a telephone call to the outside, and there is no need to confirm whether to use a data network or a public switched telephone network. . However, you can use shortcut keys like the existing network for faster processing.

The local CPU 507 checks the number pressed by the subscriber for the voice communication signal entering the FXS 503, and if the voice communication signal requests the voice communication connection through the data communication network, the local CPU 507 switches the module 502. ) To connect the voice communication signal transferred from the FXS 503 to the switch module 502 to the DSP module 506 (1010). At this time, in order to identify whether it is a voice communication signal for requesting a voice communication connection through a data communication network, the calling user can identify by transmitting an identifier such as # or * before or after the telephone number. In addition, a specific number may be attached before or after. In other words, it can be identified that the voice communication connection through the data communication network.

The DSP module 506 compresses the received voice communication signal and delivers it to the local CPU 507 (1011).

The local CPU 507 receives the compressed voice communication signal and transmits it to the Ethernet port 508 using the Voice over Internet Protocol (VoIP) protocol (1012), and the Ethernet port 508 processes the VoIP protocol. The received voice communication signal is transmitted to the data network through the switching hub 46 (1013).

As described above, the MP-LAN 42 receives and processes the outgoing request from the subscriber.

11 is a flowchart illustrating a process of processing a voice communication connection request from a data communication network according to the present invention.

Among the call setup data input to the Ethernet port 508, the local CPU 507 identifies the called party in accordance with the VoIP protocol (1101), and performs call setup with the calling party according to the VoIP protocol (1102).

Under the control of the local CPU 507, the switch module 502 performs a connection between the DSP module 506 and the destination subscriber (1103).

The compressed voice data input through the Ethernet port 508 is forwarded to the DSP module 506 (1104). The DSP module 506 receives the compressed voice communication signal, restores the signal, and transmits the compressed voice communication signal to the switch module 502 (1105).

The switch module 502 receives the voice communication signal and delivers it to the FXS 503 corresponding to the called party (1106). The FXS 503 transfers the voice communication signal to the terminal of the called party subscriber to perform a telephone call connection (1107).

12 is a flowchart illustrating a process of processing a voice communication connection request from a public switched telephone network according to the present invention.

A telephone connection call is input from the Public Switched Telephone Network (PSTN) 41 to the E1 / T1 trunk 505, and the E1 / T1 trunk 505 receives it (1201). The E1 / T1 trunk 505 receives the telephone connection call and transmits the corresponding information to the local CPU 507, and the local CPU 507 confirms the called party of the input telephone connection call (1202).

The local CPU 507 controls the switching module to connect the telephone connection call of the E1 / T1 trunk 505 with the FXS 503 directed to the called party (1203).

The FXS 503 connected to the called party forwards the input telephone call to the terminal of the called subscriber (1204).

The above embodiment is characterized in that the exchange is performed in the switch module in the process of performing the voice communication connection from the public switched telephone network. In addition, the present invention subscriber line relay network switching system can be installed in the middle of the existing telephone line connected to the destination subscriber from the public switched telephone network, the above embodiment has been entered through the E1 / T1 trunk 505, In this case, the received telephone connection call is identified and connected to the called party. Telephone connection calls input from the public switched telephone network to the FXO 501 may be directly connected by the switch module 502 to the matching FXS 503, and may be switched by the switch module 502 under the control of the local CPU 507. Can also be switched.

In the above-described embodiment, since the case of sending is described to the internal subscriber, the case is not described separately in the case of an incoming call.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes can be made in the art without departing from the technical spirit of the present invention. It will be apparent to those of ordinary knowledge.

The present invention as described above, it is possible for a general subscriber to receive a VoIP service, a general telephone service and a data communication service at the same time by using a network switching system for subscriber line relaying, each subscriber through a data communication network It is possible to make a voice call so that there is no need to pay the call fee between the subscribers in the region where the system is installed, and each general subscriber can make a virtual private network using the actual telephone number. There is an effect that can use a convenient and convenient communication service.

Claims (30)

In the network switching system for subscriber line relay for providing voice communication and data communication using data network and extension subscriber line without going through public switched telephone network (PSTN), A subscriber for transmitting a voice communication signal and a data communication signal from a subscriber through one extension subscriber line, and separating the voice communication signal and data communication signal received through the extension subscriber line according to a frequency band and providing the same to the subscriber. Line processing means; The voice communication signal and the data communication signal received from the subscriber line processing means through the extension subscriber line are separated and transmitted according to the frequency band, and the received voice communication signal or data communication signal is transmitted through the subscriber subscriber line through the subscriber line processing. Digital subscriber line processing means for transmission to the means; And Exchange means for digitally processing the voice communication signal from the digital subscriber line processing means and transmitting it to a data communication network, and receiving the digital signal processed voice communication signal from the data communication network and transmitting it to the digital subscriber line processing means. Network switching system for subscriber line relay comprising a. The method of claim 1, The exchange means, And identify the voice communication signal from the digital subscriber line processing means and transmit the voice communication signal transmitted to the subscriber connected to the switching means to the corresponding digital subscriber line processing means. . The method of claim 1, The exchange means, Switching means for exchanging voice communication signals received from said digital subscriber line processing means, said voice communication network and said data communication network and transmitting them to said digital subscriber line processing means, said voice communication network or said data communication network; Connecting means for performing transmission and reception arbitration of a voice communication signal between said switching means and said digital subscriber line processing means; Digital signal processing means for receiving the voice communication signal from the digital subscriber line processing means from the switching means, compressing the transmission signal, and transmitting the compressed voice data signal from the data communication network to the switching means; And Control means for controlling and controlling the switching means, the connection means, and the digital signal processing means, and receiving and transmitting a voice data signal from the digital signal processing means and the data communication network to identify and transmit a destination. Network switching system for subscriber line relay comprising a. In the network switching system for subscriber line relay for providing voice communication and data communication, A subscriber for transmitting a voice communication signal and a data communication signal from a subscriber through one extension subscriber line, and separating the voice communication signal and data communication signal received through the extension subscriber line according to a frequency band and providing the same to the subscriber. Line processing means; The voice communication signal and the data communication signal received from the subscriber subscriber line are separated according to the frequency band, and the voice communication signal is transmitted to the voice communication line, the data communication signal is transmitted to the data communication network, and the voice communication signal and data transmitted to the subscriber. Digital subscriber line processing means for receiving a communication signal and transmitting it through said extension subscriber line; And Receives a voice communication signal through the voice communication line and transmits the voice communication signal through the voice communication network and the data communication network according to the subscriber's line selection. Exchange means for transmission via Network switching system for subscriber line relay comprising a. The method of claim 4, wherein The exchange means, Switching means for exchanging voice communication signals received from said digital subscriber line processing means, said voice communication network and said data communication network for transmission to said digital subscriber line processing means, said voice communication network or said data communication network; First connection means for performing transmission and reception arbitration of a voice communication signal between said switching means and said digital subscriber line processing means, and extracting transmission information of said voice communication signal; Second connection means for performing transmission and reception of a voice communication signal between the switching means and the voice communication network, and extracting transmission information of the voice communication signal; Digital signal processing means for receiving, compressing and transmitting the voice communication signal transmitted from the switching means through the data communication network, and receiving and restoring the compressed communication signal from the data communication network to the switching means; And Control the switching means, check the transmission information extracted from the first connection means and the second connection means to control switching in the switching means, and voice communication from the digital signal processing means and the data communication network. Control means for checking and transmitting the transmission information on the signal Network switching system for subscriber line relay comprising a. The method of claim 5, The second connecting means, Substrate line relay network switching system, characterized in that substantially the FXO (FXO) for direct connection of the switching means and the voice communication network. The method of claim 5, The second connecting means, Substrate line relay network switching system characterized in that the E & M for the connection using the trunk of the switching means and the voice communication network substantially. The method of claim 5, Transmission information of the voice communication signal, Destination information of the voice communication signal; And Selection information on a communication network to be used by the voice communication signal; Subscriber line relay network switching system comprising a. The method of claim 5, The control means, And the transmission line is processed by referring to a table in which telephone numbers and data communication addresses are matched so that the subscriber can selectively use a voice communication network and a data communication network with respect to the voice communication signal. The method of claim 4, wherein Arbitration means for connecting the digital subscriber line processing means and the voice communication network to enable voice communication of the subscriber when an error occurs in the switching means; And Arbitration control means for controlling the operation of the arbitration means by detecting the abnormality of the exchange means Network switching system for subscriber line relay further comprising. The method according to any one of claims 1 to 10, The subscriber line processing means, A first band pass for transmitting only the band of the voice communication signal received from the one subscriber line to the subscriber's voice communication terminal, and receiving the voice communication signal from the voice communication terminal and transmitting the voice communication signal to the subscriber line. filter; And A first data communication signal processing for transmitting only the band of the data communication signal received from the extension subscriber line to the subscriber's data communication terminal and transmitting the data communication signal from the data communication terminal to the one transmission line; Way Network switching system for subscriber line relay comprising a. The method of claim 11, The first data communication signal processing means, A second band pass filter for passing only the received data communication signal of a predetermined band; Converting the analog data communication signal transmitted from the second band pass filter into a digital signal and transmitting the signal; converting the digital data communication signal transmitted from the subscriber's data communication terminal into an analog signal and transmitting the analog signal to the second band pass filter First conversion means for; And Second Ethernet transmission and reception means for receiving and transmitting a digital data communication signal transmitted to said data communication terminal from said first conversion means, and receiving and transmitting a digital data communication signal from said data communication line to said first conversion means. Network switching system for subscriber line relay comprising a. The method according to any one of claims 1 to 10, The digital subscriber line processing means, A third band pass filter for transmitting only the band of the voice communication signal received from said switching means and said subscriber line; And Receives only the band of the analog data communication signal received from the extension subscriber line, converts and transmits the digital data communication signal used in the data communication line, and converts the digital data communication signal received from the data communication line to the subscriber. Second data communication signal processing means for transmitting on a line Network switching system for subscriber line relay comprising a. The method of claim 13, The second data communication signal processing means, A fourth band pass filter for passing only the received analog data communication signal band; Converting and transmitting the analog data communication signal transmitted from the fourth band pass filter into a digital signal, and converting the digital data communication signal transmitted from the data communication line into an analog signal and transmitting the analog signal to the fourth band pass filter. 2 conversion means; And Second Ethernet transmission and reception means for receiving and transmitting a digital data communication signal transmitted through said data communication line from said second conversion means, and receiving and transmitting a digital data communication signal from said data communication line to said second conversion means. Network switching system for subscriber line relay comprising a. In the network switching system for subscriber line relay, Switching means for switching to receive a control signal with respect to the received voice communication signal and to selectively transmit it to a subscriber station, a voice communication network and a data communication network; Digital signal processing means for receiving the voice communication signal to be transmitted through the data communication network from the switching means, compressing and transmitting the received signal, and recovering the voice communication signal received through the data communication network to the switching means; And A control signal is provided to switch the voice communication signal input to the switching means according to the transmission information of the voice communication signal, and a destination address is input to the voice communication signal received from the digital signal processing means and the data communication network. Control management means for matching and transmitting Network switching system for subscriber line relay comprising a. The method of claim 15, The switching means, Switching processing means for switching and receiving a control signal from the control management means with respect to the received voice communication signal; First connection means for performing transmission and reception arbitration of a voice communication signal between the switching processing means and the subscriber terminal, and extracting and transmitting transmission information of the voice communication signal to the control management means; And Second connection means for performing transmission and reception of a voice communication signal between the switching processing means and the voice communication network and extracting transmission information of the voice communication signal; Network switching system for subscriber line relay comprising a. The method of claim 16, The second connecting means, And a foreign exchange office (FXO) for substantially connecting said switching processing means and said voice communication network. The method of claim 16, The second connecting means, And an E & M for connecting the switching processing means and the trunk of the voice communication network. The method of claim 16, The first connecting means, And a foreign exchange station (FXS) for substantially connecting the switching processing means and the subscriber station. The method according to any one of claims 15 to 19, The control management means, And controlling the switching means so that the voice communication signal inputted to the switching means can be transmitted to a subscriber station, a voice communication network, or a data communication network connected to the switching means at the request of the voice communication signal sender. Network switching system for subscriber line relay. In a communication service providing method applied to a subscriber line relay network switching system for providing voice communication and data communication using a data network and an extension subscriber line without going through a public switched telephone network (PSTN), A first step of receiving a communication signal transmission from a subscriber and confirming a signal band; A second step of performing data communication by transmitting the data communication signal to the data network as a result of the checking of the first step; A third step of determining whether it is a transmission request to an internal subscriber using the switching system if it is a voice communication signal as a result of the checking of the first step; A fourth step of performing a call connection to the internal subscriber's terminal if it is the transmission request to the internal subscriber as a result of the determination of the third step; And As a result of the determination of the third step, if the transmission request is not sent to an internal subscriber, a fifth step of processing the data to transmit a voice communication signal to the data network to perform voice communication through the data network. Communication service providing method comprising a. The method of claim 21, A sixth step of receiving a voice communication signal of a data format from an external data network and confirming that the called party is an internal subscriber to perform call setup with the calling party; A seventh step of receiving a voice communication signal of a received data format and restoring it; And An eighth step of transmitting the restored voice communication signal to the communication terminal of the subscriber corresponding to the called party to perform communication; Communication service providing method further comprising. In a communication service providing method applied to a subscriber line relay network switching system for providing voice communication and data communication using a data network and an extension subscriber line without going through a public switched telephone network (PSTN), A first step of receiving a voice communication signal of a data format from an external data network and confirming that the called party is an internal subscriber to perform call setup with the calling party; Receiving a voice communication signal of a received data format and restoring it; And A third step of transmitting the restored voice communication signal to the communication terminal of the subscriber corresponding to the called party so that communication is performed; Communication service providing method comprising a. A communication service providing method applied to a subscriber line relay network switching system for providing voice communication and data communication, A first step of receiving a communication signal transmission from a subscriber and confirming a signal band; A second step of transmitting data to the data network if the data communication signal band is determined as the result of the first step; A third step of checking a destination and a requested transmission scheme of the voice communication signal if the result of the checking of the first step is a voice communication signal band; A fourth step of performing voice communication through the public switched telephone network by transmitting the voice communication signal to the public switched telephone network if the voice communication connection request using the public switched telephone network is a result of the checking in the third step; A fifth step of performing voice communication through the data network by processing a data to transmit a voice communication signal to the data network if the voice communication connection request using the data network is a result of the checking in the third step; And A sixth step of performing a voice connection by performing a call connection to the terminal of the internal subscriber when the transmission request to the internal subscriber connected to the switching system is found as the result of the third step Communication service providing method comprising a. The method of claim 24, A seventh step of receiving a voice communication connection request from the public switched telephone network and connecting a telephone call to a terminal of a corresponding internal subscriber; And An eighth step of receiving a voice communication connection request from the data network, confirming that the called party is an internal subscriber, restoring a voice communication signal of the received data format, and connecting a telephone call to the terminal of the internal subscriber; Communication service providing method further comprising. A communication service providing method applied to a subscriber line relay network switching system for providing voice communication and data communication, Receiving a voice communication connection request from a public switched telephone network and connecting a telephone call to a terminal of a corresponding internal subscriber; Receiving a voice communication signal in data format from a data network and confirming that the called party is an internal subscriber to perform call setup with the calling party; Receiving a voice communication signal of a received data format and restoring it; And A fourth step of transmitting the restored voice communication signal to the communication terminal of the subscriber corresponding to the called party so that communication is performed; Communication service providing method comprising a. In a subscriber line relay network switching system having a processor, A first function of receiving a communication signal transmission from a subscriber and confirming a signal band; A second function of transmitting a data communication signal to the data network as a result of confirming the first function to perform data communication; A third function of determining whether it is a request for transmission to an internal subscriber using the switching system if it is a voice communication signal as a result of confirming the first function; A fourth function of performing a call connection to the terminal of the internal subscriber when the transmission of the request to the internal subscriber is determined as the third function; And A fifth function for processing voice data through the data network by performing data processing to transmit a voice communication signal to the data network if it is not a transmission request to an internal subscriber as a result of the determination of the third function; A computer-readable recording medium having recorded thereon a program for realizing this. 28. The method of claim 27 wherein A sixth function of receiving a voice communication signal of a data format from an external data network and confirming that the called party is an internal subscriber to perform call setup with the calling party; A seventh function of receiving a voice communication signal in a received data format and restoring it; And Eighth function for transmitting the recovered voice communication signal to the communication terminal of the subscriber corresponding to the called party to perform communication A computer-readable recording medium that records a program for further realization. In a subscriber line relay network switching system having a processor, A first function of receiving a communication signal transmission from a subscriber and confirming a signal band; A second function of transmitting a data communication signal band to the data network if the first function confirms the data communication signal band; A third function of checking a destination of the voice communication signal and a requested transmission scheme if the first function confirms the voice communication signal band; A fourth function of transmitting the voice communication signal to the public switched telephone network so as to perform voice communication through the public switched telephone network if the voice communication connection request using the public switched telephone network is a result of the checking of the third function; A fifth function of processing a data to transmit a voice communication signal to the data network if the voice communication connection request using the data network is performed as a result of the check of the third function; And A sixth function for performing voice connection by performing a call connection to the terminal of the internal subscriber if the transmission request is made to the internal subscriber connected to the switching system as a result of the checking of the third function; A computer-readable recording medium having recorded thereon a program for realizing this. In a subscriber line relay network switching system having a processor, A first function of receiving a voice communication connection request from a public switched telephone network and connecting a telephone call to a terminal of a corresponding internal subscriber; A second function of receiving a voice communication signal of a data format from a data network and confirming that the called party is an internal subscriber to perform call setup with the calling party; A third function of receiving and restoring a voice communication signal in a received data format; And A fourth function of transmitting the restored voice communication signal to the communication terminal of the subscriber corresponding to the called party so that communication is performed; A computer-readable recording medium having recorded thereon a program for realizing this.