KR20030046213A - Method for authenticating gateway communication protocol, apparatus for the same - Google Patents

Abstract

PURPOSE: A method and a device for authenticating a gateway communication protocol are provided to use only a communication protocol having a pre-stored authentication code in a VOIP(Voice Over Internet Protocol) gateway system, so as to secure a normal system operation. CONSTITUTION: Authentication codes are matched with communication protocols respectively and stored in an authenticator(S300), wherein the authentication codes are configured differently from each other according to each communication protocol and stored in a programmable chip in hardware. When a VOIP gateway device is booted, a CPU compares the authentication code stored in the authenticator with an authentication code of a loading communication protocol(S310), to decide whether the two authentication codes are coincident with each other(S320). If so, the CPU maintains a booting operation to complete initialization of entire device drivers(S330). And if the two authentication codes are different from each other, the CPU completes an initialization operation without initializing a specific device driver(S340).

Description

Gateway communication protocol authentication apparatus and method {Method for authenticating gateway communication protocol, apparatus for the same}

The present invention relates to a communication protocol authentication apparatus and method that can be used in a VOIP gateway.

In general, VOIP (Voice Over Internet Protocol) is an Internet application technology that compresses voice signals through end-to-end channel setting based on IP addresses and delivers packetized voice data.

The next generation telephone network providing integrated voice service such as VOIP is composed of various gateways and a gateway controller for controlling them. The gateway compresses the voice signal transmitted from the telephone network into a low speed code, converts the voice signal into a form suitable for the Internet network, and delivers it to another gateway.

The booting process of a conventional VOIP gateway includes, first, a central processing unit (CPU), logic to perform decoding, a real time clock providing real time information, NVRAM providing IP information, and initialization. Boot ROM for storing code required for operation, SDRAM for providing a work processing space of the central processing unit, communication device for each device driver and VOIP gateway other than the basic code processed in the boot ROM. Flash memory for downloading and storing from the outside, this device driver, telnet and file transport protocol (FTP) for downloading the VOIP gateway, and signal processing unit for compressing and processing the input data according to the compression algorithm used in the VOIP gateway. And a LAN interface for processing media access control and connecting to an external LAN. It is composed of the basic shape structure initialization. Thereafter, the data stored in the flash memory is initialized with a separate device driver (for example, a digital signal processor (DSP) driver, an analog / digital subscriber line driver, etc.) and a VOIP gateway protocol to complete the booting process of the entire VOIP gateway. do.

As such, in addition to the code stored in the boot ROM, downloading a device driver and a communication protocol for a VOIP gateway may include various types of VOIP protocols (eg, H.323, Session Initiation Protocol (SIP), and MGCP (Media). Gateway Control Protocol (NAC), Protocol of Net 2 Phone Inc. (N2P, etc.) can be upgraded more easily in response to the addition and change of each function, while VOIP is downloaded by unauthenticated communication protocol from VOIP gateway. It does not guarantee the normal operation of the gateway system, and there is concern about economic losses as third-party device drivers and communication protocols are used in the VOIP gateway system without replacing a device.

As a result, since the normal operation of the VOIP gateway system is not guaranteed, a problem may occur such that system performance is degraded and initialization and booting time are delayed.

Accordingly, the present invention has been made in view of the above-mentioned problems of the prior art, and provides an apparatus and method for authenticating a gateway communication protocol so that only an authenticated communication protocol can be used in a VOIP gateway system.

In addition, the present invention provides an apparatus and method for authenticating a gateway communication protocol so that only an authenticated communication protocol is used in the gateway communication system to ensure normal operation of the system.

According to one aspect of the present invention for achieving the above object, the protocol authentication apparatus according to the present invention, in a gateway for compressing the voice signal transmitted from the telephone network to a low-speed code, and converts it into a form suitable for the Internet network, A first memory for storing authentication information so as to distinguish communication protocols for system control, and a communication protocol currently loaded using the authentication information stored in the first memory, and the system using the authenticated communication protocol. And a central processing unit for controlling the protocol authentication apparatus.

Preferably, the authentication information is composed of specific codes that are matched one-to-one with each communication protocol so as to distinguish the communication protocols, and the first memory is implemented as a programmable chip, so that the specific code is pre-arranged. Save it.

According to another feature of the present invention for achieving the above object, in the gateway that compresses the voice signal transmitted from the telephone network to a low-speed code, and converts it into a form suitable for the Internet network, to authenticate the communication protocol for system control Storing the authentication information, comparing the stored authentication information with the authentication information of the loaded communication protocol when the system is booted, and using a communication protocol having matching information from the comparison result. It comprises a step of performing.

Preferably, the authentication step further comprises the step of comparing whether the checked authentication information and the loaded protocol have the same specific code value.

Preferably, in the authentication step, if the checked authentication information and the loaded protocol does not have the same specific code value further comprises the step of failing to initialize the system.

1 is a block diagram of a VOIP gateway system according to the present invention.

2 is a flowchart illustrating a communication protocol authentication method of a VOIP gateway system according to the present invention.

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

100 logic unit 110 signal processing unit

120: analog / digital subscriber line 130: central processing unit

140: LAN interface unit 150: NVRAM

160: Bootrom 170: SDRAM

180: flash memory 190: authentication unit

Hereinafter, a configuration and an operation according to an exemplary embodiment of the present invention will be described with reference to the accompanying drawings.

2 is a block diagram of a VOIP gateway according to the present invention.

Referring to FIG. 2, the VOIP gateway according to the present invention uses the authentication unit 190 to store authentication information so as to distinguish communication protocols for system control, and the codes stored in the boot ROM 160. A central processing unit for copying the information, processing various VOIP communication protocols, authenticating the currently loaded communication protocol using the authentication information stored in the authentication unit 190, and controlling the system using the authenticated communication protocol. 130, a logic unit 100 connected to the central processing unit 130 to perform data control and decoding operations, and NVRAM for providing real-time time information and storing system information such as an IP or MAC address. 150, a boot ROM 160 for storing code necessary for the initialization operation of the central processing unit 130, and a work process for processing data by the central processing unit 130. SD memory 170 for providing a flash memory 180 for downloading and storing communication protocols for each device driver and VOIP gateway other than the basic code processed by the boot ROM 160 and each subscriber line ( Signal processing unit 110 for compressing and processing data input through the compression algorithm used by the VOIP gateway, LAN interface unit 140 for processing media access control and connection to an external LAN, and analog Or analog / digital subscriber line 120 providing an interface for a digital subscriber.

Operation of the VOIP gateway system according to the present invention configured as described above is as follows.

First, the authentication unit 190 is a communication protocol provided by a VOIP gateway system, that is, specific to be used in H.323, Session Initiation Protocol (SIP), Media Gateway Control Protocol (MGCP), and Net 2 Phone Protocols (N2P). Memory that stores the authentication code. That is, the authentication unit 190 stores a specific authentication code assigned to each VOIP communication protocol, and this authentication information is used to authenticate the communication protocol loaded during the initial booting operation. Preferably, the authentication unit 190 is configured using a programmable chip.

Referring to the initial boot operation of the VOIP gateway system according to the present invention.

When power is supplied, the CPU 130 retrieves codes stored in the boot ROM 160 and performs an initialization operation indicated by the codes. That is, the central processing unit 130 initializes internal registers such as machine state registers, caches, internal memory map registers (IMMRs), and system interface units (SIUs).

Thereafter, the CPU 130 sets a memory map such as a base register and an option register to connect each device. After this setting operation, the central processing unit 130 initializes the SDRAM 170, and copies the codes that were executed in the boot ROM 160 to the SDRAM 170.

In addition, the central processing unit 130 initializes a control unit (not shown) for serial communication therein, and then initializes a LAN control unit (not shown). When the LAN is initialized, separate communication protocols must be downloaded from the outside, and the central processing unit 130 initializes communication protocols such as telnet and FTP for this purpose.

With the initialization of communication protocols such as Telnet, FTP, the central processing unit 130 initializes the flash memory 180 and the NVRAM 150 to complete the initialization of the basic shape structure.

Then, communication protocols are downloaded from the outside through FTP of a LAN (not shown) and stored in the flash memory 180. These communication protocols initiate specific device drivers and the communication protocols of the VOIP gateway system.

At this time, the central processing unit 130 has a specific authentication code stored in the authentication unit 290 and the authentication code of each VOIP gateway communication protocol stored and loaded in the flash memory 180 has the same value. Check if the code has

In this case, when the two authentication codes have the same value, the initialization of each device driver is completed by using the loaded communication protocols and the normal booting operation is performed to complete the entire initialization operation.

However, when the two authentication codes do not have the same value, the booting process of the entire VOIP gateway system is terminated without the communication protocol initializing specific device drivers.

As a result, the initialization operation of the VOIP gateway protocol system is completed, but the VOIP gateway system does not perform normal operation.

As such, the VOIP gateway system according to the present invention can authenticate and use only a communication protocol having an authentication code stored in the authenticator 190.

3 is a flowchart illustrating a communication protocol authentication method of a VOIP gateway according to the present invention.

Referring to FIG. 3, first, an authentication code is matched for each communication protocol and stored in the authentication unit 190 (S300). In this case, the authentication code is composed of different codes for each communication protocol, and stored in a programmable chip of hardware.

Subsequently, when the VOIP gateway device is booted, the central processing unit 130 and the authentication code stored in the authentication unit 19 to determine whether the communication protocol stored in the flash memory 180 and loaded is available. The authentication code of the communication protocol to be loaded is compared with each other (S310).

Then, according to the result of the comparison step (S310), it is determined whether the authentication code of the communication protocol to be loaded and the authentication code provided by the authentication unit 190 has the same value with each other (S320).

As a result of the determination, when the authentication code of the communication protocol to be loaded and the authentication code provided by the authentication unit 190 have the same value, the booting operation is continued to complete initialization of all device drivers (S330). However, when the two authentication codes have different values, the initialization operation is completed without initializing a specific device driver (S340).

As described above, according to the protocol authentication apparatus and the invention of the communication system according to the present invention, in the VOIP gateway system, only a communication protocol having only a pre-stored authentication code can be used, thereby ensuring the normal operation of the system.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the spirit of the present invention.

Therefore, the technical scope of the present invention should not be limited to the contents described in the examples, but should be defined by the claims.

Claims (6)

In a gateway that compresses the voice signal transmitted from the telephone network and converts it into a form suitable for the Internet network, A first memory for storing authentication information so as to distinguish communication protocols for system control, respectively; And a central processing unit for authenticating a communication protocol currently loaded using the authentication information stored in the first memory, and for controlling the system using the authenticated communication protocol. The apparatus of claim 1, wherein the authentication information comprises a specific code that matches one-to-one with each communication protocol so as to distinguish the communication protocols. The apparatus of claim 1, wherein the first memory is implemented as a programmable chip to store the specific code. In a gateway that compresses the voice signal transmitted from the telephone network and converts it into a form suitable for the Internet network, Storing authentication information for authenticating a communication protocol for system control; Comparing the stored authentication information with authentication information of a loaded communication protocol when a system is booted; And performing a system initialization using a communication protocol having matching information from the comparison result. The method of claim 4, wherein in the authentication step, And comparing the checked authentication information with the loaded protocol having the same specific code value. The method of claim 4, wherein in the authentication step, And when the checked authentication information and the loaded protocol do not have the same specific code value, failing to initialize the system.