KR100407826B1 - Total access gateway system - Google Patents

Abstract

The present invention relates to a network device for efficiently transmitting / receiving narrow band data and broadband band data as an invention for an apparatus accommodated in an access network.

The integrated access gateway system of the present invention receives a narrowband processor 110 interworking with a PSTN network, a voice packet processor 120 that matches a ATM network and provides a voice call path, and receives an xDSL by receiving broadband data based on an ATM. A system consisting of a broadband processing unit 130 to provide a service to a subscriber through the narrowband processing unit 110, the exchanger 200 and the E1 matching unit 111, which is a V5.2 matching unit, a general telephone subscriber and an ISDN subscriber. A narrowband subscriber matching unit 112 for processing, a DTMF device unit 113 for translating a subscriber's called number, a TDM (time division multiplexing) POOL unit 114 for performing a TDM switching function and a TDM matching function, and a subscriber; A test device unit 115 for performing a test function of a line and a subscriber circuit, a tone device unit 116 for providing a tone to the subscriber device, and a signal for controlling and receiving a signal from the main controller 140. 1 including the control unit 117 Is composed of; The voice packet processing unit 120 is physically connected to the ATM network 34, the ATM matching unit 122 for matching voice to AAL2 and control data to AAL5, and an AAL2 processing unit for converting received data and AAL2 packets ( 123, an AAL5 processing unit 124 for converting received data and AAL5 packets, and a vocoder unit for converting voice and digital, compressing data, restoring compressed data, and transmitting the compressed data to the TDM matching unit 121. The broadband processing unit 130 includes an ATM matching unit 131 for providing only AAL5 signals, an xDSL subscriber matching unit 132 for accepting xDSL subscribers, and a leased line subscriber for providing a leased line service. There is a technical feature in that the matching portion 133 is made.

Accordingly, the integrated access gateway system of the present invention provides a system structure using statistical multiplexing, which is an advantage of ATM, in a network structure that assumes physical and logical fixed allocation, thereby providing narrowband and broadband data services in one network structure. Integrated device management is possible from individual device management, and it can be used as an access gateway by minimizing changes in the evolution to the next generation network.

Description

Integrated access gateway system

The present invention relates to an integrated access gateway system, and more particularly, a narrowband processing unit interworking with a PSTN network, a voice packet processing unit matching with an ATM network to provide a voice call path, and receiving an ATM-based broadband data to receive xDSL. The present invention relates to an integrated access gateway system configured to include a broadband processing unit that provides a service to a subscriber through a statistical multiplexing, and to provide an integrated service of narrowband data and broadband data using an efficient transmission path.

In the past, narrowband data and broadband data services were provided through separate paths, which will be described with reference to the accompanying drawings.

1 is a conceptual diagram of services through FLC-D and DSLAM, and physically multiplexes narrowband data 11 and wideband data 12 from FLC-D (COT) 14 to FLC-D (RT). Transmits to the 16 and the DSLAM 17 and separates the narrow band and the wide band to provide the service to the subscriber 10.

However, the service through the DSLAM (17) is divided into three rooms (15a ~ 15c) of the DS3 per STM-1, and because the service is accommodated in each of the separated room can not effectively utilize the transmission path, system management There is a disadvantage that must be managed by dualization.

In addition, as shown in FIG. 2, the service using the FLC-C 24 delivers the narrowband data 21 to the RT 26 through an AAL1 type circuit emulation. Therefore, since the fixed narrowband data band (Band) 25a is allocated to the transmission path 25 including the wideband data band 25b regardless of use, the transmission path is not efficient.

In addition, recently, there is a demand for a structure that can simultaneously accommodate an ATM-based service and an IP-based service that are used in access equipment.

Accordingly, the narrowband data and broadband data integrated access gateway system of the present invention is to solve all the disadvantages and problems pointed out in the prior art as described above, and is advantageous in ATM in a network structure that assumes physical or logical fixed allocation. Integrate and provide narrowband data and broadband data services using statistical multiplexing to ensure that services are provided with minimal changes in network evolution and simultaneously accommodate ATM-based and IP-based services currently used in access equipment. It is an object of the present invention to provide a device capable of doing so.

1 is a conceptual diagram of a conventional narrowband data and broadband data service system using FLC-D and DSLAM.

2 is a conceptual diagram of a conventional narrowband data and wideband data service system using FLC-C;

3 is a conceptual diagram of an integrated access gateway system according to the present invention;

Figure 4 is a schematic block diagram showing the configuration of the present invention integrated access gateway system.

((Explanation of symbols for main parts of drawing))

100. Integrated access gateway system 110. Narrow-band processing unit

120. Voice packet processor 130. Broadband processor

140. Main control unit 200. Switchboard

300. First system 400. Second system

500. ATM network (data network)

The above object of the present invention is achieved by an integrated access gateway system configured to include a narrowband processor, a voice packet processor and a wideband processor to accommodate narrowband data and wideband data.

The present invention for performing the above object is inevitable to change the narrowband voice data to data accessible in the data network, to accommodate the narrowband data and broadband data in the data backbone network.

The narrowband processor is used for interworking with a PSTN network, that is, a general telephone network, and is in charge of interworking with internal calls and exchanges of subscribers connected to the system.

In addition, the voice packet processing unit may match the ATM network to enable VToA and VoDSL services, and provide a voice call path with a second system, which is a remote system.

In addition, the broadband processing unit receives broadband data of an ATM base (IPoA: IP over ATM) provided from a network and physically provides the subscriber through xDSL.

Details of the above object and technical configuration and the effects thereof according to the present invention will be more clearly understood by the following detailed description based on the accompanying drawings.

First, Figure 3 is a conceptual diagram of the narrowband data and broadband data integrated access gateway system of the present invention, Figure 4 is a schematic block diagram showing the configuration of the integrated access gateway system of the present invention.

As shown in Fig. 3, in the present invention, the narrowband data 31, i.e., the voice call, is connected to the ATM network 34, the first system 35, the first system 35, and the second system 36 through AAL2. The narrowband data 31 and wideband data 32 used are occupied by the data path 37 of the link only when used.

At this time, the second system 36 is a system dependent on the first system 35 and accommodates a narrowband and broadband data service subscriber 30 of a remote location.

As shown in FIG. 4, the integrated access gateway system of the present invention includes a narrowband processor 110, a voice packet processor 120, a broadband processor 130, and a main controller 140.

Hereinafter, the configuration and role of each part of the integrated access gateway system 100 will be described.

First, the narrowband processing unit 110 translates an exchange number and an E1 matching unit 111 which is a V5.2 matching unit, a narrowband subscriber matching unit 112 that processes a general telephone subscriber and an ISDN subscriber, and a called party number of the subscriber. A DTMF device unit 113, a TDM (time division multiplexing) POOL unit 114 that performs a TDM switching function and a TDM matching function, a test device unit 115 that performs a test function of a subscriber line and a subscriber circuit, And a tone device unit 116 for providing a tone to the subscriber device, and a first controller 117 for receiving and controlling a signal from the main controller 140.

The narrowband processor 110 provides a path that is matched with the switch 200 of the PSTN network as a part used when interworking with a PSTN network, that is, a general telephone network.

The E1 matching unit 111 is a V5.2 matching unit with the switch 200, and narrow-band data of 2.048 Mbps is matched, and the interworking protocol is V5.2.

The narrowband subscriber matching unit 112 performs a matching function of an internal subscriber line, where a general telephone subscriber, an ISDN subscriber, and a modem subscriber are registered.

The DTMF device unit 113 performs a function of translating the corresponding called number as the subscriber presses a button through the telephone.

The TDM POOL unit 114 performs a switching function for each channel of the narrowband processing unit 110 to interconnect each other.

The tone device unit 116 provides a dial tone, a ring back tone, and the like to each subscriber connected to the subscriber matching unit.

On the other hand, in the case where only the matching of the exchanger 200 is configured, the signal flow is as follows.

First, when data is received from the switch 200 through the E1 matching unit 111, the data is transmitted to the TDM POOL unit 114, and the narrowband subscriber matching unit 112 undergoes registration with the general telephone subscriber through internal switching. Is connected to.

At this time, the control of the flow of the signal is controlled by the first controller 117 by receiving the control signal through V5.2 and transmitting it to the first controller 117 of the narrowband processor 110.

On the other hand, when a signal is transmitted from the subscriber side, when the subscriber's data is connected to the switch and occupies the corresponding channel through the switch, matching with the switch 200 is performed through the E1 matching unit 111.

The channel occupancy is controlled by the first control unit 117 of the narrowband processing unit 110, the narrowband processing unit 110 is responsible for the interworking function of the subscriber and the internal call of the subscriber connected to the system.

Next, the voice packet processing unit 120 matches with the ATM network 500 to provide VToA and VoDSL services, and provides a path for a call to a voice with the second system 500 which is a remote system.

The voice packet processing unit 120 includes a TDM matching unit 121, an ATM matching unit 122, an AAL2 processing unit 123, an AAL5 processing unit 124, a vocoder unit 125, and a second control unit 126. It is composed of

The ATM matching unit 122 is physically connected to the ATM network 34 by DS3 / STM-1, voice is converted to AAL2, and control data is converted to AAL5 to be interworked.

The AAL2 processor 123 converts the data received from the vocoder 125 into an AAL2 packet or performs inverse transform.

The AAL5 processor 124 converts the control signal and the response signal to the control into AAL5 and transmits and receives them.

Vocoder section (VOC) 125 A codec unit for converting voice data into digital or digital data into voice data; It includes a data compression unit that performs compression, and performs a function of canceling echo.

Echo is caused by the delay of voice data, and is canceled by canceling the reverberation by interfering with an antiphase wave to the echo that is reflected back to the sender on the telephone line.

The voice packet processing unit 120 is used to connect voice data of an internal subscriber to a data packet network, and the voice data packetized from the ATM network 500 to the AAL2 processing unit 123 is an ATM matching unit. If input to the 122, the AAL2 processing unit 123 removes the AAL2 packet and delivers the removed voice data to the vocoder unit 125.

The vocoder unit 125 restores the compressed data and transmits the compressed data to the TDM matching unit 121, which is connected to the subscriber through the TDM POOL unit 114, and is reversed at the time of transmission.

Meanwhile, the voice packet processing unit 120 accommodates VToA and VoDSL services using AAL2.

At this time, Voice and Telephony over ATM (VToA) is a technology for asynchronous transmission (ATM) of voice transmitted to a private network or a cellular network, and reduces the transmission cost by integrating a private network or a cellular network into an ATM network and converts the voice into an ATM. It refers to a technology that provides high-quality real-time multimedia services for computer communications, including telephones.

And, voice over digital subscriber line (VODSL) uses voice as a packet line and transmits voice data as well as high-speed internet as a single telephone line, unlike conventional asymmetric digital subscriber line (ADSL). A technology that allows you to use phone numbers at the same time.

Next, the broadband processing unit 130 includes an ATM matching unit 131, an xDSL subscriber matching unit 132, a leased line subscriber matching unit 133, and a third control unit 134.

Broadband data is provided from a network. In the present invention, data received from an ATM base (IPoA: IP over ATM) is provided to a subscriber through xDSL.

The ATM matching unit 131 physically provides DS3 / STM-1, provides only AAL5 signal, and provides voice data through AAL2 when providing VoDSL service, and provides both data and control signals provided by the packet network to AAL5. do.

The xDSL subscriber matching unit 132 accommodates a variety of xDSL subscribers. xDSL is a collective term for several types of DSL (Digital Subscriber Device). The technology of xDSL includes transmission rate, transmission distance, uplink and downlink transmission rate, and application. The service is divided into DSL, HDSL, SDSL, ADSL, and VDSL.

The leased line subscriber matching unit 133 provides n * 64 kbps, El and DS3 dedicated line services.

That is, the leased line subscriber matching unit 133 collects xDSL services and receives signals from digital subscriber line accesses of multiple customers and transmits signals to a high speed backbone line using multiplexing technology. It replaces the functionality of DSLAM to provide users with high-speed telephone line technology and high-speed backbone network technology.

As described above, the integrated access gateway system of the present invention provides narrowband, wideband, and leased line services in one equipment and packetizes and transmits voice to AAL2 between the first system and the second system.

Accordingly, the present invention provides a narrowband and wideband data service by providing a system structure using statistical multiplexing, which is an advantage of ATM, in a network structure assuming physical and logical fixed allocation. By providing integration in the structure, integrated device management is possible in individual device management, and it can be used as an access gateway by minimizing changes in the evolution to the next generation network.

Claims (1)

A narrowband processor 110 interworking with the PSTN network, a voice packet processor 120 matching the ATM network to provide a voice call path, and a broadband to receive broadband data based on ATM and provide a service to a subscriber through xDSL As a system consisting of a processing unit 130, The narrowband processing unit 110 exchanges the switch 200 and the E1 matching unit 111, which is a V5.2 matching unit, the narrowband subscriber matching unit 112 that processes the general telephone subscriber and the ISDN subscriber, and the called party number of the subscriber. DTMF device 113 for translation, TDM (time division multiplexing) POOL unit 114 for performing TDM switching function and TDM matching function, and test device unit 115 for performing a test function of subscriber line and subscriber circuit. And a tone device unit 116 for providing a tone to the subscriber device, and a first control unit 117 for receiving and controlling a signal from the main control unit 140; The voice packet processing unit 120 is physically connected to the ATM network 34, the ATM matching unit 122 for matching voice to AAL2 and control data to AAL5, and an AAL2 processing unit for converting received data and AAL2 packets ( 123, an AAL5 processing unit 124 for converting received data and AAL5 packets, and a vocoder unit for converting voice and digital, compressing data, restoring compressed data, and transmitting the compressed data to the TDM matching unit 121. Including 125; The broadband processing unit 130 includes an ATM matching unit 131 for providing only AAL5 signals, an xDSL subscriber matching unit 132 for accepting xDSL subscribers, and a leased line subscriber matching unit 133 for providing leased line services. Integrated access gateway system characterized in that.