KR100375668B1 - Remote dslam device - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote DSL device, and is particularly installed in a remote unmanned station, and receives ADSL subscriber traffic from a plurality of ADSL subscriber modems (1), converts them into ATM data, and simultaneously multiplexes and aggregates them through an optical cable. An unmanned DSLAM 100 which transmits to the telephone company and, upon receiving a plurality of ATM data from the telephone company, converts it into ADSL subscriber traffic and distributes the same to the plurality of ADSL subscriber modems 1; And installed in the telephone company and at the same time connected to the unmanned DSLAM (100) remotely installed from the telephone company by the optical cable, when receiving a large amount of ATM data from the unmanned DSLAM (100) by converging it to the STM-1 level ATM While transmitting to the exchange 2, when receiving ATM data from the ATM switch 2 is characterized in that it consists of a concentrated self DSLAM (200) for transmitting the unmanned DSLAM (100) over an optical cable, The present invention has an excellent effect of smoothly providing ADSL services to subscribers in unmanned nations, remote from the telephone company, to expand the range of ADSL services and to flexibly cope with the increase in subscriber capacity in unmanned nations.

Description

Remote DSLAM device {REMOTE DSLAM DEVICE}

The present invention relates to a remote Digital Subscriber Line Access Multiplexer (DSLAM) device. More particularly, the present invention relates to a subscriber in an unmanned national history area remote from a telephone company using existing transmission networks DS3 and E1. The present invention relates to a remote DSL device that provides flexible service to the increase in subscriber capacity in an unmanned nation while providing ADSL (Asymmetric Digital Subscriber Line) service.

As is well known, in the current trend of increasing demand for ADSL, the need for ADSL service support in more areas and areas farther away from the telephone company is increasing.

The first DSLAM system is installed in the telephone company as a rack type structure as shown in FIG. 1, and performs self-control and management function of the Concentration Shelf (CS) when looking at the self-specific configuration. Concentration Shelf Management Board (CSMB) (11), Concentration Self-providing STM-1 (Synchronous Transfer Mode Level 1) interface with ATM (Asynchronous Transfer Mode; ATM) network. Concentration Shelf Downlink Board (CSDB) providing an E1 or STM-1 interface with a Concentration Shelf Uplink Board (CSUB) (12) and a Modem Shelf (MS) 20 ( 13), and a centralized self (10) consisting of a Digital Subscriber Line Board (DSLB) 14 in ADSL subscriber interface mode; Modem Shelf Management Board (MSMB) 21, which performs control and management functions of the modem Self 20, and a Modem Self Interface Board (MSIB) that provides an E1 or STM-1 interface with a centralized self. A modem self (20) consisting of a Shelf Interface Board (22) and a Digital Subscriber Line Board (DSLB) 23, which is an ADSL subscriber interface board; And a splitter pots line board (SPLB) 31 that provides isolation and synthesis of subscriber ADSL data and Plain Old Telephone Service (POTS) voice signals, and a power supply of -48V to power each board. A splitter shelf (SS) 30 composed of a PADP (Power Alarm Distribution Panel (hereinafter referred to as " PADP ")) 32 for supplying was formed.

Referring to FIG. 2, the operation process according to the aggregation structure of the conventional DSLAM system is briefly described with reference to FIG. 2. After receiving the ADSL subscriber traffic from the ADSL subscriber modem 1, E1, DS3 (Digital Service 3) ) Or multiplex and aggregate to ATM traffic of STM-1 level and transmit / receive to centralized self. Then, the concentrated self 20 aggregates the ATM traffic received from each modem self 10 to E1, DS3 or STM-1 level and transmits / receives with ATM switch 2.

However, the above-described conventional DSLAM system provides a subscriber with a long distance from the telephone company in a situation where the demand of the ADSL subscriber is rapidly increasing and exceeds the maximum distance of the ADSL line when providing a service to a remote residential area such as a rural area. There was a problem with not supporting the service.

Therefore, in recent years, the development of remote DSLAM for ADSL service from a telephone station to a remote residential area, a rural area, a mountainous area, a fishing area, etc., is in progress.

The conventional remote DSLAM developed in this process was a sub-standing remote DSLAM as shown in FIG. 3. This is achieved by separating the concentration shelf (CS) 10 and the modem shelf (MS) 20 from the DSLAM shown in FIG. 20) supported the service by installing in the unmanned state office in the remote area of the apartment or subscriber of ADSL subscriber.

However, since the above-described sub-standby remote DSLAM is installed and used in the unmanned state only, the modem self DSLAM is installed in the unmanned state in order to cope with the increase of subscriber capacity in the unmanned state. In addition to the need to change the configuration of the centralized self DSLAM installed in the telephone company, this has caused a problem that time and material loss occurs because the operator has to change the DSLAM configuration by moving the remote.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide an ADSL service to subscribers in an unmanned national area remote from a telephone company using existing transmission networks DS3 and E1. It is to provide a remote DSLAM device for smoothly providing.

Another object is to provide a remote DSL device for flexibly coping with the increase in subscriber capacity in an unmanned national company remote from the telephone company.

In order to achieve the above object, the remote DSLM device of the present invention is installed in a remote unmanned station, and receives ADSL subscriber traffic from a plurality of ADSL subscriber modems, converts it into ATM data, and simultaneously multiplexes and aggregates the optical cable. An unmanned DSLAM that transmits to the telephone company through the mobile station and converts the received ATM data into ADSL subscriber traffic and distributes it to the multiple ADSL subscriber modems; And

It is installed at the telephone company and is connected to the unmanned DSLAM remotely installed from the telephone company by optical cable. When a large amount of ATM data is received from the unmanned DSLAM, it is collected at the STM-1 level and transmitted to the ATM switch. When receiving ATM data from the ATM switch, it is characterized in that it consists of a centralized self DSLAM to transmit the unmanned DSLAM over the optical cable.

1 is a shape diagram showing a state of a conventional DSLAM device of the rack-type structure,

FIG. 2 is a functional block diagram illustrating a configuration of a DSLAM device having a conventional 1 rack type structure according to FIG. 1; FIG.

3 is a diagram illustrating a network to which a conventional remote DSLAM device is applied;

4 is a basic network configuration to which a remote DSLAM device is applied according to an embodiment of the present invention;

5 is a functional block diagram showing the configuration of a remote DSLAM device according to an embodiment of the present invention;

FIG. 6 is a rack structure diagram showing the shape of an unmanned DSLAM installed in an unmanned state in a remote DSLAM device according to FIG. 5; FIG.

FIG. 7 is a rack structure diagram showing still another shape of an unmanned DSLAM installed in an unmanned state in the remote DSLAM device of FIG. 5.

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

100: Unattended DSLAM 110: Modem Self

111: Digital Subscriber Line Board 112: Modem Self Interface Board

113: modem self management board 120: first concentrated self

121: First centralized self downlink board 122: First centralized self downlink board

123: First centralized self management board 130: First ATM transmission means

140: power supply means 200: intensive self DSLAM

210: second ATM transmission means 220: second concentrated self

221: second concentrated self downlink board 222: second concentrated self uplink board

223: Second Intensive Self Management Board

Hereinafter, a remote DSL device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

4 is a basic network configuration diagram to which a remote DSLAM device is applied according to an embodiment of the present invention, and FIG. 5 is a functional block diagram showing a configuration of a remote DSLAM device according to an embodiment of the present invention. The remote DSLAM apparatus in the example is composed of an unmanned DSLAM 100 and a concentrated self DSLAM 200.

The unmanned DSLAM 100 is installed in a remote unmanned station, and receives ADSL subscriber traffic from a plurality of ADSL subscriber modems 1, converts it into ATM data, and simultaneously multiplexes and aggregates the optical cable using an E1 or DS3 interface method. While transmitting to the central office self-contained DSLAM (200) through, while receiving a plurality of ATM data from the central office self-contained DSLAM (200) at the E1 or DS3 rate converts it into ADSL subscriber traffic to a plurality of ADSL subscriber modem ( 1), and comprises a plurality of modem shelves 110, a first centralized shelf 120, a first ATM transmission means 130, and a power supply means 140.

At this time, the plurality of modem self 110 mounted in the unmanned DSLAM 100 converts the ADSL subscriber traffic from the plurality of ADSL subscriber modems 1 into ATM data, and simultaneously multiplexes and aggregates the ATM data. When receiving a plurality of ATM data from the first centralized self 120, and converting it to ADSL subscriber traffic, each of the plurality of ADSL subscriber modems 1 connected to itself are transmitted. It serves to distribute, and is composed of a plurality of digital subscriber line board 111, modem self-interface board 112, and modem self management board 113, respectively.

Each of the plurality of digital subscriber line boards 111 installed in the plurality of modem shelves 110 receives ADSL subscriber traffic from a plurality of ADSL subscriber modems 1 and converts them into ATM data to convert the modem self interface boards into the ATM data. On the other hand, when receiving a plurality of ATM data from the modem self-interface board 112, it converts them into ADSL subscriber traffic and transmits them to the corresponding ADSL subscriber modem 1, respectively.

In addition, the modem self interface board 112 mounted in each of the plurality of modem self 110 is connected to the plurality of digital subscriber line boards 111 by a cell bus, and the plurality of digital subscriber line boards 111 When a large amount of ATM data is received, it is concentrated at the STM-1 level and transmitted to the first concentrated shelf 120, while receiving a large amount of ATM data at the STM-1 level from the first concentrated shelf 120. It serves to distribute this to the corresponding digital subscriber line board (111).

In addition, the modem self management board 113 mounted in each of the plurality of modem self 110 performs a function of operating and managing the plurality of digital subscriber line boards 111 and the modem self interface board 112. do.

On the other hand, when the first centralized self 120 mounted in the unmanned DSLAM 100 receives a plurality of ATM data from the first ATM transmission means 130, the modem self 110 among the plurality of modem self 110 is received. On the other hand, when receiving a large amount of ATM data from the plurality of modem Self (110) collects it and transmits to the first ATM transmission means 130, and the first centralized self-downlink board ( 121, the first lumped self uplink board 122, and the first lumped self management board 123.

At this time, the first centralized self-downlink board 121 mounted in the first centralized self 120 receives a large amount of ATM data of the STM-1 level from the plurality of modem shelves 110 and transmits the cell bus. While transmitting a large amount of ATM data from the first centralized self uplink board 122 through the first centralized self uplink board 122, the modem self 110 is converted to the STM-1 level. It serves to send.

In addition, the first centralized self uplink board 122 mounted in the first centralized self 120 is dualized into an active / stand-by to receive a large amount of ATM data from the first centralized self downlink board 121. When receiving it, and transmits it to the first ATM transmission means 130, and when receiving a large amount of ATM data from the first ATM transmission means 130 and transmits it to the first centralized self-downlink board 121 do.

The first concentrated self management board 123 mounted in the first concentrated self 120 may operate and manage the first concentrated self downlink board 121 and the first concentrated self uplink board 122. To play a role.

On the other hand, the first ATM transmission means 130 mounted in the unmanned DSLAM (100) receives a large amount of ATM data at the E1 or DS3 rate from the centralized self-contained DSLAM (200) in the telephone company office after demuxing it and the second 1 is transmitted to the centralized self 120, while receiving a large amount of ATM data from the first centralized self 120 is to mux it and transmits it to the centralized self DSLAM (200) in the telephone company at E1 or DS3 speed Do it.

In addition, the power supply means 140 mounted in the unmanned DSLAM 100 serves to supply power to the plurality of modem self 110, the first centralized self 120, and the first ATM transmission means 130. Do it.

On the other hand, the centralized self DSLAM (200) is installed in the telephone company and at the same time connected to the unmanned DSLAM (100) remotely installed from the telephone company by the optical cable, a large amount of ATM data from the unmanned DSLAM (100) E1 or DS3 When received at the speed, it is concentrated at the STM-1 level and transmitted to the ATM switch 2, while receiving the ATM data from the ATM switch 2, it is sent to the unmanned DSLAM 100 through the optical cable through E1 or DS3. It serves to transmit at a speed, and comprises a second ATM transmitting means 210 and a second centralized self 220.

At this time, the second ATM transmission means 210 mounted in the centralized self DSLAM 200 receives a large amount of ATM data from the unmanned DSLAM 100 at an E1 or DS3 rate, and then demuxes the second ATM data. When transmitting a large amount of ATM data from the second centralized self 220, while receiving a large amount of ATM data from the second concentrated self 220 and transmits to the unmanned DSLAM 100 at the speed of E1 or DS3 through the optical cable Do it.

In addition, when the second centralized self 220 mounted in the centralized self DSLAM 200 receives a plurality of ATM data from the second ATM transmission unit 210, the second centralized self 220 collects them and transmits them to the ATM switch 2. When receiving a large amount of ATM data from the ATM switch (2), it transmits the data to the ATM transmission means 210, the second centralized self-downlink board 221, the second centralized self-uplink board 222 ) And a second centralized self-management board 223.

In this case, when the second centralized self downlink board 221 mounted in the second centralized self 220 receives a large amount of ATM data from the second ATM transmitting means 210, the second centralized self downlink board 221 receives the large amount of ATM data. While transmitting to the board 222, when receiving a large amount of ATM data from the second centralized self-uplink board 222 serves to transmit it from the second ATM transmission means 210.

In addition, the second centralized self-uplink board 222 mounted in the second centralized self-220 is dualized with active / stand-by to receive a large amount of ATM data of the STM-1 type from the ATM switch 2. Upon receiving it, it transmits it to the second centralized self downlink board 221, and when receiving a large amount of ATM data from the second centralized self downlink board 221, converts it to the STM-1 level and then switches the ATM switch ( 2) to transmit.

The second concentrated self management board 223 mounted in the second concentrated self 220 may operate and manage the second concentrated self downlink board 221 and the second concentrated self uplink board 222. To play a role.

On the other hand, the rack structure of the unmanned DSLAM (100) of the remote DSLAM device according to an embodiment of the present invention described above has a shape as shown in Figure 6 when the power supply means 140 is implemented in PADP, When the power supply means 140 is implemented as a rectifier, it has a shape as shown in FIG. 7. Therefore, the operator is used to install the unmanned DSLAM 100 of the structure shown in Figure 6, 7 in an unmanned national history area, such as rural or fishing villages.

Then, in the following operation of the remote DSLAM device according to an embodiment of the present invention having the configuration described above attached to the unattended DSLAM installed in the unmanned state area ATM transfer process from the unattended DSLAM installed in the telephone company This will be described with reference to.

First, each of the plurality of digital subscriber line boards 111 mounted in the plurality of modem self 110 of the unmanned DSLAM 100 receives ADSL subscriber traffic from the plurality of ADSL subscriber modems 1 and then each of the ATM data. Is converted to and transmitted to the modem self interface board 112.

Then, the modem self interface board 112 receives a large amount of ATM data from the plurality of digital subscriber line boards 111 and at the same time concentrates it to the STM-1 level and then the first self-assembly in the first centralized self 120. 1 Transfer it to the intensive self downlink board 121.

Subsequently, the first centralized self-downlink board 121 in the first centralized shelf 120 receives a large amount of ATM data of the STM-1 level from the plurality of modem terminals 110 and then transmits the ATM data to the mobile terminal via the cell bus. The first centralized self uplink board 122 is transmitted.

Then, the first concentrated self uplink board 122 receives a large amount of ATM data from the first concentrated self downlink board 121 and transmits the large amount of ATM data to the first ATM transmitting means 130.

Subsequently, the first ATM transmission unit 130 receives a large amount of ATM data from the first centralized self uplink board 122 in the first centralized self 120 and muxes the ATM data, thereby processing the ATM at an E1 or DS3 rate. Send to the central office self-contained DSLAM (200).

Then, the second ATM transmitter 210 mounted in the central office DSLAM 200 of the telephone company sends a large amount of ATM data from the first ATM transmitter 130 in the unmanned DSLAM 100 at an E1 or DS3 rate. If received, it is demuxed and then transmitted to the second concentrated self-220.

Subsequently, the second centralized self downlink board 221 mounted in the second centralized self 220 receives a large amount of ATM data from the second ATM transmitting means 210, and then the second centralized self downlink board 221 receives the large amount of ATM data. Transmit to link board 222.

Then, the second centralized self uplink board 222 receives a large amount of ATM data from the second centralized self downlink board 221 and converts it to the STM-1 level to be transmitted to the ATM switch 2. do.

On the other hand, during the operation of the remote DSLAM device according to an embodiment of the present invention, the ATM transfer process from the centralized DSLAM installed in the telephone company to the unmanned DSLAM installed in the unmanned national history area is performed by the centralized DSLAM installed in the telephone company. This is a reverse flow of the ATM transmission process.

As described above, according to the remote DSLM device according to the present invention, the ADSL service is smoothly provided to the subscribers in the unmanned national area remote from the telephone company, thereby expanding the scope of the ADSL service and increasing the subscriber capacity in the unmanned national company. It's a great way to be flexible.

Claims (8)

Installed in a remote unmanned company, it receives ADSL subscriber traffic from multiple ADSL subscriber modems, converts it into ATM data, multiplexes and aggregates the data, and transmits it to the telephone company through an optical cable. Receiving unreceived DSLAM converts it into ADSL subscriber traffic and distributes it to a plurality of ADSL subscriber modems; And It is installed at the telephone company and is connected to the unmanned DSLAM remotely installed from the telephone company by optical cable. When a large amount of ATM data is received from the unmanned DSLAM, it is collected at the STM-1 level and transmitted to the ATM switch. A remote DSLAM device comprising: a centralized self DSLAM configured to transmit ATM data from an ATM switch to an unmanned DSLAM via an optical cable; The method of claim 1, Remote DSLAM device, characterized in that the interface between the unmanned DSLAM and centralized DSLAM using E1 or DS3 method. The method of claim 1, When the unmanned DSLAM receives ADSL subscriber traffic from a plurality of ADSL subscriber modems, it converts them into ATM data, simultaneously multiplexes and aggregates them, and transmits each, while receiving multiple ATM data, converts them into ADSL subscriber traffic. A plurality of modem selfies each distributed to a plurality of ADSL subscriber modems connected thereto; A first centralized self that distributes the plurality of ATM data to a corresponding modem self among the plurality of modem self, and collects and transmits a large amount of ATM data from the plurality of modem self after collecting the ATM data; If a large amount of ATM data is received from the central office self-contained DSLAM, it is demuxed and then transmitted to the first concentrated self, and if a large amount of ATM data is received from the first concentrated self, it is muxed and then the telephone station A first ATM transmission means for transmitting to the in-house centralized self storage DSLAM; And And a plurality of modem self, a first centralized self, and a power supply means for supplying power to the first ATM transmission means. The method of claim 3, wherein When the plurality of modems themselves receive ADSL subscriber traffic from a plurality of ADSL subscriber modems, each of the modems converts them into ATM data, and transmits them to each corresponding ADSL subscriber modem. A plurality of digital subscriber line boards for transmitting; It is connected to the plurality of digital subscriber line boards by a cell bus, and when receiving a large amount of ATM data from the plurality of digital subscriber line boards, it aggregates and transfers the data to the STM-1 level, and a large amount of ATM at the STM-1 level. A modem self interface board for distributing data to a corresponding digital subscriber line board upon receiving data; And A remote DSLM device, comprising: a modem self-management board, each configured to perform operations and management functions of the plurality of digital subscriber line boards and the modem self-interface board. The method of claim 3, wherein When the first concentrated self receives a large amount of ATM data of the STM-1 level from the plurality of modem shelves, the first concentrated self transmits the same through the cell bus. A first centralized self-downlink board for transmitting to the modem self; Doubled by active / standby, it transmits a large amount of ATM data from the first centralized self-downlink board to the first ATM transmitting means and receives a large amount of ATM data from the first ATM transmitting means. A first concentrated self uplink board for transmitting this to the first concentrated self downlink board; And And a first concentrated self management board configured to perform an operation and management function of the first concentrated self downlink board and the first concentrated self uplink board. The method of claim 3, wherein The power supply means is a remote DSLM device, characterized in that implemented as a PADP or rectifier in the rack configuration. The method of claim 1, The centralized self DSLAM transmits after receiving a large amount of ATM data from the unmanned DSLAM after demuxing it and transmitting the same to the unmanned DSLAM after receiving a large amount of ATM data. ; And When receiving a plurality of ATM data from the second ATM transmission means and aggregates it and transmits to the ATM switch, when receiving a large amount of ATM data from the ATM switch consists of a second centralized self for transmitting it to the ATM transmission means Remote DSLAM device, characterized in that. The method of claim 7, wherein The second centralized self, when receiving a large amount of ATM data from the second ATM transmission means; and receiving a large amount of ATM data from the second centralized self downlink board for transmitting it from the second ATM transmission means ; Redundant to Active / Standby, when receiving a large amount of ATM data of the STM-1 method from the ATM switch, transmits it to the second centralized self-downlink board, while receiving a large amount of ATM from the second centralized self-downlink board A second centralized self uplink board which converts the data to the STM-1 level when the data is received and transmits the data to the ATM switch; And And a second concentrated self management board configured to perform operations and management functions of the second concentrated self downlink board and the second concentrated self uplink board.