KR20050121364A - A voip gateway apparatus based on digital enhanced cordless telecommunications - Google Patents

Abstract

The present invention relates to a Digital Enhanced Cordless Telecommunications (DECT) based Voice over Internet Protocol (VoIP) gateway device, and is a new type of device in which a plurality of individual device functions are integrated on a platform through a standard interface.

The apparatus according to the present invention integrates a base station of a DECT wireless telephone which is currently used in Europe, and a VoIP gateway providing an Internet telephony function and a network gateway function by using a standard interface of the present method. (Station) function, high speed modem connection function, sharing of one IP (Internet Protocol) address by multiple terminals, LAN (Local Area Network) configuration function through Ethernet, data input through standard interface It can convert to IP data and perform internet phone call function to talk with the other party through internet network.

The present invention can be provided with the Internet telephone service through the device according to the present invention without changing the general DECT telephone used by the existing user, and can also simultaneously receive the service provided by the existing VoIP gateway. Therefore, it is a low cost efficient new concept VoIP gateway device.

Description

DECT-based VoIP gateway device {A VoIP Gateway Apparatus based on Digital Enhanced Cordless Telecommunications}

The present invention relates to a Digital Enhanced Cordless Telecommunications (DECT) -based Voice over Internet Protocol (VoIP) gateway device, which integrates a plurality of individual device functions on a platform through a standard interface.

Currently, the number of high-speed Internet subscribers is exploding all over the world, and the trend in Europe, which has been delaying the establishment of high-speed network, shows that the number of subscribers is increasing compared to that of other regions. In addition, the number of homes with two or more PCs is increasing, and information terminals with network access functions are being used to increase the necessity of efficient network construction in homes and offices. In addition, the form of the method through the power line is also becoming more diverse.

On the other hand, Internet telephony technology that delivers voice through IP (Internet Protocol) network has been widely spread to meet the needs of countries with relatively high communication fees and increase of communication costs according to various forms such as mobile phones and general telephones. The scale is increasing. Internet telephony technology has become a mainstream in the form of a standalone embedded device equipped with a dedicated DSP (Digital Signal Processor) in the conventional web-to-phone type based on a PC.

The DECT market has been formed around Europe, and as a result of more than 10 years of technology development, the market has matured and is growing more than 10% annually. It is a technology that has been adopted as a standard in more than 110 countries around the world including China as well as Europe. Currently, DECT wireless phones for voice calls with different price ranges and functions are being shipped to the European market. VoIP-related terminal technologies and services are expanding in Europe and other countries, which are relatively weak in IP.

Therefore, there is an increasing need for integrated products that provide various types of high-speed Internet access functions, efficient network configuration functions in homes and offices, and Internet phone service functions, but there are no devices to meet these requirements.

Accordingly, the present invention is devised to integrate a plurality of individual device functions based on the conventional DECT technology through a standard interface on one platform.

An object of the present invention is to provide an apparatus for configuring a system of an integrated platform that provides various types of high speed modem access, home and office network construction, internet sharing, and internet telephony service through an existing DECT wireless telephone. There is this.

In addition, the present invention provides a connection function with various types of modems connected to the existing IP network, to connect to a plurality of PCs through a single IP address to use the Internet, the DECT wireless telephone The purpose of the present invention is to provide an Internet telephone service through an IP network, and to provide a device constituting a system capable of simultaneous data transmission / reception service such as file download.

The present invention relates to a Voice over Internet Protocol (VoIP) gateway device based on Digital Enhanced Cordless Telecommunications (DECT), and is a new type of device in which a plurality of individual device functions are integrated through a standard interface on one platform. .

DECT-based VoIP gateway device according to the present invention,

A main processor block including a main processor having two Ethernet controllers, a memory unit having SDRAM and flash memory, and a Joint Test Action Group (JTAG) and controlling overall functions;

It includes a transformer and a physical layer processor, provides a matching function with external network devices (eg, ADSL, VDSL modem, etc.) and delivers voice and data processed by an Ethernet controller of the main processor block to an external network. An external network matching block;

An internal network matching block including a transformer and a physical layer processor and providing a matching function for configuring an internal network (LAN) and providing a connection function with a hub, a PC, and the like;

Digital Signal Processor (DSP), PCM Pulse Coded Modulation Coder / Decoder (COC), COIC (Central Office Interface Circuit), COIC controller, and provide Internet telephony function and voice to PSTN in case of network failure VoIP control block that provides call function and provides voice call function to general telephone network when user wants.

And a DECT matching block including a DECT base band processor and an RF (Radio Frequency) transceiver and converting the voice signal input through a wireless DECT handy to the VoIP control block. The connection signal of the DECT matching block is configured by separating the analog data and the control data.

The apparatus according to the present invention integrates a base station of a DECT wireless telephone currently used in Europe and the like and a VoIP gateway providing an Internet telephony function and a network gateway function by using a standard interface of the present method. (Station) function, high speed modem connection function, sharing of one IP (Internet Protocol) address by multiple terminals, LAN (Local Area Network) configuration function through Ethernet, data input through standard interface It can convert to IP data and perform internet phone call function to talk with the other party through internet network.

The present invention can be provided with the Internet telephone service through the device according to the present invention without changing the general DECT telephone used by the existing user, and can also simultaneously receive the service provided by the existing VoIP gateway. Therefore, it is a low cost efficient new concept VoIP gateway device.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the DECT-based VoIP gateway device according to the present invention.

1 is a reference diagram for explaining the application of the DECT-based VoIP gateway device according to the present invention. As shown in FIG. 1, the DECT-based VoIP gateway device according to the present invention is, in one embodiment, a DECT handy (handset), a hub (HUB), and a desktop used through the DECT-based VoIP gateway device according to the present invention. Desktop PCs, notebook PCs, network printers, modems that interconnect between the gateway device and the Internet, telephones, gatekeepers, and trunk gateways that provide communication services to cellular phones and landlines. It is applied to a system including an ITSP (Internet Telephony Service Provider) that provides a trunk gateway and interconnects between a telephone company and an internet network. Based on the DECT technology, a plurality of individual device functions are provided on one platform. Designed to integrate through standard interfaces, it supports various forms of high speed modem access, network in home and office Features, Internet sharing features and provides an apparatus for configuring a system of integrated platform that provides Internet phone service such as the existing DECT function via the cordless phone.

In addition, the present invention provides a connection function with various types of modems connected to the existing IP network, to connect to a plurality of PCs through a single IP address to use the Internet, the DECT wireless telephone The present invention provides an apparatus for configuring a system that enables Internet telephone service through an IP network, and enables data transmission / reception services such as file download and simultaneous telephone service.

2 is a block diagram of a DECT-based VoIP gateway device according to the present invention. As shown in FIG. 2, the configuration of the DECT-based VoIP gateway device according to the present invention includes a main processor block, an internal / external network matching block, a VoIP control block, and a DECT matching block. It separates the connection signal of DECT matching block into analog data and control data and configures it to provide efficient service and expandability.

All operation control of the apparatus according to the present invention comprises the main processor block 1 comprising a main processor 1 having an Ethernet controller, a memory section 2 having an SDRAM and a flash memory, and a Joint Test Action Group (JTAG) 3. In charge of Various programs and data are separately stored in the memory unit 2, and the main processor 1 reads and processes the program in the memory unit 2 and data necessary for executing the program, and stores the result in the memory unit 2 again. The memory unit 2 stores a basic operating system (OS) kernel, various device drivers, and application programs for operating the device according to the present invention. The JTAG port of JTAG (3) is an interface that displays the results of data exchange and intermediate processing externally for debugging.

The internal / external network matching block (5) (4) consists of a transformer and a physical layer processor, respectively, and in the external network matching block (4), matching with various external network devices (for example, ADSL, VDSL modem, etc.). It provides a function and delivers voice and data processed by Ethernet controller of main processor block to external network. The internal network matching block 5 provides a matching function for configuring a local area network (LAN), and provides a connection function with a hub and a PC. The present invention provides a sharing function for accessing the Internet using an assigned IP address, and the main processor 1 is responsible for executing a program therefor. The addresses of devices connected to the internal network are created and assigned by the main processor 1 as a private IP address. The internal / external network matching block of the present invention adopts a structure MII (Media Independent Interface) having a standard interface so that heterogeneous wired and wireless network blocks can be easily applied.

The DECT matching block 6 is composed of a DECT Base Band Processor and an RF (Radio Frequency) Transceiver. The DECT matching block 6 provides a function of converting a voice signal input through a wireless DECT handy to a VoIP control block shown below. do. In addition, it provides a function of delivering a short message service (SMS) and a signal based on system control to a main processor through separate paths separated into analog and control data. The passage structure separated into analog and control data provides scalability that allows heterogeneous functional blocks such as 900 MHz wireless telephones to be easily matched.

The overall operation of the DECT matching block 6 is performed according to the DECT standard, as follows. During transmission, call related signals such as dials are communicated between the DECT handy processor, the RF transceiver, and the DECT baseband processor. After that, the DECT baseband processor uses the PCM CODEC unit through the CODEC interface inside the processor. 9), it is sent to the DSP 8 and reprocessed the call-related signal in the main processor 1 and then output to the external network. After the communication of the call channel-related information is completed through this process, voice data is transmitted through the RTP (Real-time Transport Protocol) through the call-related information and the path. In addition, non-voice supplementary service data such as SMS (Short Message Service) is communicated with the main processor block through the control data path of the DECT baseband processor.

Upon reception, communication of the call-related signal between the DSP 8 and the DECT baseband processor is performed first, thereby opening the call channel. Thereafter, a voice data channel is formed on the RTP to transmit voice data. The data is transmitted to the final DECT handy through the reverse path at the time of transmission.

VoIP control block provides internet telephony function and voice call function to public switched telephone network (PSTN) in case of network failure (network failure or overload), and voice call function to general telephone network whenever user wants To provide. First, the Internet telephony function transmits analog data received by the PCM Coded Modulation Coder / Decoder (9) through the DECT matching block (6) to the main processor through the DSP (Digital Signal Processor) unit (8). . The main processor receives the converted data, converts it into IP packets, and transmits them to the Internet. DSP provides various CODEC functions used in VoIP service and provides functions such as echo cancellation. The general telephone transmission / reception function is provided through the general telephone network (PSTN) through the DECT matching block 6, the PCM CODEC unit 9, the DSP unit 8, and the central office interface circuit (COIC) unit 7. The COIC controller 10 in the VoIP control block is in charge of transmission and reception control to a general telephone network by being informed of network conditions and user requests from the main processor. The PCM CODEC unit 9 in the VoIP control block is configured in a flexible structure to be extended to the Multi PCM CODEC, and the VoIP control block has a block structure in which each functional unit can be configured and operated as a standard interface.

Referring to the high-speed modem function of the DECT-based VoIP gateway device according to the present invention as follows.

The high speed modem (ADSL, VDSL, Cable modem, etc.) is connected to the external network matching block (4) by the internal path, and the physical layer in the external network matching block (4) through the physical layer processor and transformer inside the external modem. It is connected to the processor and operates the Ethernet controller inside the main processor block. After that, the IP address is obtained from the ADSL modem by PPPoE (Point to Point Protocol over Ethernet) function and from the VDSL / Cable modem by DHCP (dynamic Host Configuration Protocol). The bidirectional communication is performed through the internal path of the external network matching block 4. After the setting is completed, a connection is made between the high speed modem and the main processor 1, and data transmission and reception are performed.

An internal network configuration function through the Ethernet cable of the DECT-based VoIP gateway device according to the present invention will be described below.

Internal network (LAN: Local Area Network) and internal network matching block (5) provides the internal network configuration function through the internal path. In the internal network configuration, a router or a network interface card (NIC) of a PC is connected. Both the NIC of the router or the PC has an Ethernet controller and a physical layer processor, and the internal network is formed through the connection between the router-device and the PC-device by using an Ethernet cable. In the lower part of the router, another router or PC is connected and used. In theory, up to 255 PCs can be connected.

Referring to the function of sharing a single IP address of the DECT-based VoIP gateway device according to the present invention, that is, the Internet sharing function as follows.

The Internet sharing function is performed through the internal network matching block (5) path by the NAT (Network Address Translation) function in the main processor block. The Internet sharing function uses the DHCP protocol to distribute private IP addresses to internal network PCs and provides the function of changing the public IP address-> private IP address, private IP address-> public IP address by the main processor block. In the external network matching block 4, the public IP address can be used, and in the internal network matching block 5, the private IP address can be used, and one IP address is shared by several terminals.

Referring to the Internet phone function through the DECT wireless phone of the DECT-based VoIP gateway device according to the present invention as follows.

Internet phone transmission is performed through the connection between the external general DECT handy and the RF transceiver inside the DECT matching block 6 through the DECT wireless method. The DECT baseband processor is connected to the main processor block through the control data path to send and receive call-related control signals, and through this process, the main processor 1 processes the call-related information, so that the internal network matching block 4 is internal. Send a packet to an external IP network through a path. The call-related information is sent in packet form according to the Internet telephony protocol (H.323, SIP, etc.), and the receiving part connected to the IP network receives this information and exchanges a series of call-related information. The data is transferred to make an actual internet phone call. Internet phone call is received in the opposite direction from transmission after receiving call related information from external sender through internal network matching block (4) internal path and following a series of processes (for example, ring generation). Voice data is received.

When the DECT-based VoIP gateway device according to the present invention needs to be described a switching function to a general telephone network as follows.

In the present invention, a function of enabling a telephone by switching to a general telephone network (PSTN) is implemented if necessary. The DECT handy connected through the internal path of the DECT matching block 6 inputs a specific number which is defined in advance in software, and switches the path to the general telephone network instead of the IP network according to the channel change of the DSP 8 so that the voice data Will be sent. This function is achieved through the COIC controller 10 under the control of the main processor block.

As described above, the DECT-based VoIP gateway device according to the present invention is a platform structure of a single structure having extensibility, an internal network configuration function using an ultra-high speed modem connection function, an Ethernet cable, an Internet sharing function, and an external DECT wireless telephone. It is an integrated device that provides Internet phone service through.

The present invention has a flexible PCM CODEC structure that allows the internal network connection to enable a wired / wireless configuration, and to be able to simultaneously communicate through multiple DECT handsets. In addition, it is a structure that can provide a function to switch to a general telephone network in case of network failure or according to the needs of users.

Accordingly, the present invention provides an advanced model of efficient voice and data integration wired / wireless integration technology, since the present invention is provided with an internet phone service through a conventional DECT telephone. In addition, it can be expected to reduce the cost of equipment purchase by configuring the method through a simple interface, and provides an integrated structure to easily adopt VoIP service in the country using the DECT standard.

The configuration and operation as described above are not limited to the claims of the present invention as an embodiment, and various changes and modifications are possible within the scope of not changing the technical spirit of the present invention. It is obvious to those who are engaged.

The DECT-based VoIP gateway device according to the present invention having the above-described configuration and operation can be achieved by integrating a base station of a DECT wireless telephone, which is currently used in Europe, and a VoIP gateway providing Internet telephone function and network gateway function using a standard interface. , International standard DECT base station function, high speed modem connection function, sharing of one IP address by multiple terminals, LAN configuration function through Ethernet, data input through standard interface to IP data conversion Internet phone function such as to make a call with the other party through the Internet network can be performed.

In addition, the present invention can be provided with the Internet phone service through the device of the method according to the present invention without changing the general DECT phone used by the existing user, it is possible to receive the service provided by the existing VoIP gateway at the same time. Therefore, it provides a new low cost and efficient VoIP gateway device.

1 is a reference diagram for explaining the application of the DECT-based VoIP gateway device according to the present invention

2 is a block diagram of a DECT-based VoIP gateway device according to the present invention

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

1: main processor 2: memory

3: JTAG (Joint Test Action Group) 4: External network matching block

5: Internal network matching block 6: DECT matching block

7: Central Office Interface Circuit (COIC) 8: DSP

9: PCM CODEC 10: COIC Controller

Claims (9)

In the VoIP gateway device, Main processor block that controls the entire function, including a main processor (1) with two Ethernet controllers, a memory section (2) with SDRAM and flash memory, and a Joint Test Action Group (JTAG) (3). ; It includes a transformer and a physical layer processor, provides a matching function with external network devices (eg, ADSL, VDSL modem, etc.) and delivers voice and data processed by an Ethernet controller of the main processor block to an external network. An external network matching block; An internal network matching block including a transformer and a physical layer processor and providing a matching function for configuring an internal network (LAN) and providing a connection function with a hub, a PC, and the like; Digital Signal Processor (DSP), PCM Pulse Coded Modulation Coder / Decoder (COC), COIC (Central Office Interface Circuit), COIC controller, and provide Internet telephony function and voice to PSTN in case of network failure VoIP control block that provides call function and provides voice call function to general telephone network when user wants And a DECT matching block including a DECT base band processor and an RF (Radio Frequency) transceiver and converting the voice signal input through a wireless DECT handy to the VoIP control block. DECT-based VoIP gateway device, characterized in that the connection signal of the DECT matching block is separated into analog data and control data The method of claim 1, In the main processor block, Various programs and data are separately stored in the memory unit, the main processor 1 reads and processes the programs and data necessary for the execution of the programs in the memory unit, and stores the result in the memory unit 2 again. Basic operating system kernel, various device drivers and application programs are stored. JTAG port of JTAG is a DECT-based VoIP gateway device that displays data exchange and intermediate processing results for external debugging. The method of claim 1, The internal / external network matching block is a DECT-based VoIP gateway device characterized in that the structure MII (Media Independent Interface) having a standard interface so that different types of wired and wireless network blocks can be easily applied. The method of claim 1, The DECT matching block is a DECT-based VoIP gateway device for transmitting a signal according to an additional service (SMS) and system control to a main processor through a path separated into analog and control data. The method of claim 1, The VoIP control block is responsible for transmission and reception control to a general telephone network by receiving network status and user request from a main processor in a COIC controller, and the PCM codec unit is configured to be extended to a multi PCM codec, and each functional unit is configured as a standard interface. And DECT-based VoIP gateway device characterized in that the block structure that can be operated The method of claim 1, In the VoIP control block, an Internet telephony function for transmitting analog data received by the PCM CODEC unit through the DECT matching block to the main processor through the DSP unit, and the main processor receives the converted data, converts the data into IP packets, and transmits them to the Internet network. General telephone transmission / reception function provided through PSTN through DECT matching block, PCM CODEC unit, DSP unit, and COIC unit, DSP provides various CODEC functions used in VoIP service, and performs echo cancellation function DECT-based VoIP gateway device characterized in that The method of claim 1, The operation of the DECT matching block, Performed according to the DECT standard, and when transmitting, call related signals such as dials are communicated between the DECT handy processor, the RF transceiver, and the DECT baseband processor, and then the DECT baseband processor is configured with the CODEC interface inside the processor. It is sent to the PCM CODEC, DSP through the main processor and reprocessed the call-related signal from the main processor and then output to the external network. After communication of the call channel-related information is completed, the transmission of voice data through the RTP DECT-based VoIP gateway device, which is made through a path and transmits additional voice data such as SMS (Short Message Service) to the main processor block through the control data path of the DECT baseband processor. The method of claim 1, The operation of the DECT matching block, It is performed according to the DECT standard, and upon reception, communication of call-related signals between the DSP unit and the DECT baseband processor is performed first, and accordingly, a call channel is opened, and then a voice data channel is formed on the RTP to transmit voice data. DECT-based VoIP gateway device characterized in that the transmission of data to the final DECT handy through the reverse path at the time of transmission In the VoIP gateway device, A main processor block including a main processor having two Ethernet controllers, a memory unit having SDRAM and flash memory, and a Joint Test Action Group (JTAG) and controlling overall functions; It includes a transformer and a physical layer processor, provides a matching function with external network devices (eg, ADSL, VDSL modem, etc.) and delivers voice and data processed by an Ethernet controller of the main processor block to an external network. An external network matching block; An internal network matching block including a transformer and a physical layer processor and providing a matching function for configuring an internal network (LAN) and providing a connection function with a hub, a PC, and the like; Digital Signal Processor (DSP), PCM Pulse Coded Modulation Coder / Decoder (COC), COIC (Central Office Interface Circuit), COIC controller, and provide Internet telephony function and voice to PSTN in case of network failure A VoIP control block that provides a call function and provides a voice call function to a general telephone network when a user wants it; And a DECT matching block including a DECT base band processor and an RF (Radio Frequency) transceiver and converting the voice signal input through a wireless DECT handy to the VoIP control block. DECT Handset, HUB, Desktop PC, Notebook, Network Printer, etc., interconnects a plurality of individual devices and modems connected to the Internet, and provides communication services to cellular phones and general telephones. Applied to a system including an Internet Telephony Service Provider (ITSP) having a telephone station, a gatekeeper, and a trunk gateway, and interconnecting between the telephone station and the internet network, the functions of the plurality of individual devices DECT-based VoIP, which integrates through a standard interface on the platform, provides high-speed modem access, home and office network building, Internet sharing, and Internet telephony service through existing DECT wireless phones. Gateway device