KR19990017080A - Ethernet redundancy match device - Google Patents

Abstract

The present invention relates to an Ethernet redundancy matching device of an electronic exchange requiring thin Ethernet redundancy physical matching. In the prior art, there is no physical redundancy matching device and a control circuit for controlling the same in each Ethernet board. The MAUs 13 and 14 must be used in duplicate by configuring the physical redundancy matching device and the control circuit for controlling the same on the Ethernet board of the Ethernet board. Since the connection of the cable has to be output from the Ethernet boards 100 and 120 and the two MAUs 13 and 14, there is a complicated defect. However, in the present invention, the Ethernet board and the back board printed circuit board board are used. Faster switching between Ethernet boards and match physical redundancy to Ethernet boards within the board Processing and so can improve the communication rate, an active / standby in the structure, so automatically cuts off or enter a power saving by the power and the reliable communication, to which can improve the above-mentioned drawbacks.

Description

Ethernet redundancy match device

The present invention relates to an Ethernet duplex matching device, and more particularly, to an Ethernet duplex matching device of an electronic exchange requiring thin Ethernet duplication physical matching.

As is well known in the art, Ethernet is one of the LANs developed by the US DEC, Intel and XEROX jointly based on the prototype of XEROX. Ethernet can communicate up to 2.5Km at 10Mbps data rate between up to 1,024 terminals.

Thin Ethernet redundancy in an electronic exchange was constructed using an external converter called a 10BASE-2 Medium Attachment Unit (hereinafter referred to as MAU) (13, 14) between the electronic exchange and the terminal.

On each 15-pin D-sub connector 108, 128 of each redundantly mounted Ethernet board 100, 120, each MAU (13, 14) via an Attachment Unit Interface (hereinafter abbreviated AUI) cable (11, 12). ) Is connected to the coaxial cable 15 and the terminal 24 through the respective MAU (13, 14).

Ethernet control units 102 and 122 in redundant Ethernet boards 100 and 120, each containing a microprocessor, and each Ethernet serial to enable serial communication and direct connection with AUI 104 and 124 and twisted pair cable. 15-pin D-SUB connected to each of the transformers 106 and 126, which are passive elements, and each of the AUI cables 11 and 12, between the transceivers 104 and 124 and the AUI 11 and 12 or twisted pair cable There are connectors 108 and 128.

However, in the related art, there is no physical redundancy matching device and a control circuit for controlling the same on each Ethernet board, and therefore, each MAU (which serves as a physical redundancy matching device and a control circuit for controlling the same on a separate Ethernet board externally) 13, 14), the MAU (13, 14) must be used in duplicate, the cable must be output from each of the redundant Ethernet board (100, 120) and two MAU (13, 14) The cable connection has a complex drawback.

The present invention has been made to solve the above-mentioned drawbacks of the prior art, Ethernet redundant matching device capable of data communication in the electronic communication device that can be physically matched only by Thin cheapernet without a separate MAU and AUI cable between the terminal and the electronic switch The purpose is to provide.

In order to achieve the above object, the present invention provides a first Ethernet controller for controlling data input and output to a first Ethernet board and a first Ethernet board in an electronic switch exchanged with a first Ethernet board and a second Ethernet board. A first Ethernet serial transceiver for transmitting and receiving data under the control of the first Ethernet control unit, a first transformer for transforming a voltage input and output to and from the first Ethernet serial transceiver, and a first transformer for converting data transmitted and received by the first transformer. A coaxial cable transmission / reception matching unit, a first DC / DC converter for receiving DC power and converting the DC power into a DC power supply suitable for the first Ethernet board, and supplying DC power to the first DC / DC converter. And a first redundancy control unit controlling power to determine active and standby between the first Ethernet board and the second Ethernet board. An Ethernet redundancy matching device, a second Ethernet controller for controlling data input and output from the electronic switchboard to the second Ethernet board, and a second Ethernet board, and the control of the second Ethernet controller is responsible for transmitting and receiving data. A second Ethernet serial transceiver; It provides an Ethernet redundancy matching device comprising a second DC / DC converter for converting to a DC power source for the Ethernet board.

1 is a block diagram of an electronic switching system suitable for Ethernet duplex matching according to the prior art;

Fig. 2 is a block diagram of an electronic switching system suitable for Ethernet duplex matching in accordance with the present invention.

＊ Explanation of symbols on main parts of drawing

20: Ethernet 200, 220: 1st, 2nd Ethernet board

202 and 222: first and second Ethernet control unit

204, 224: first and second Ethernet serial track transceiver

206, 226: first and second transformer

208, 228: first and second coaxial cable transmission and reception matching portion

210 and 230: first and second DC / DC converters

212 and 232: first and second redundant control unit

23: Thin Cheapernet Cable 24: Terminal

The above and other objects and various advantages of the present invention will become more apparent from the preferred embodiments of the invention described below with reference to the accompanying drawings by those skilled in the art.

Referring to FIG. 2, a block diagram of an electronic switching system suitable for Ethernet duplex matching according to the present invention will be described. The first Ethernet controlling the first Ethernet board 200 and the data input / output to the Ethernet from the electronic switching center will be described. Control unit 202, the first Ethernet serial transceiver 204 for transmitting and receiving data under the control of the first Ethernet control unit 202, the first transformer 206 for transforming the voltage input and output to the first Ethernet serial transceiver 204 , The first coaxial cable transmission / reception matching unit 208 for converting data transmitted and received by the coaxial cable 23 or the first transformer 206, and receiving the DC power to convert the DC power to match the first Ethernet board 200. The first DC / DC converter 210 controls the interruption of the Ethernet power to determine an active and standby between the first Ethernet board 200 and the second Ethernet board 220. 1 redundancy control 212 constitute a first Ethernet board 200 in a backplane (not shown) for receiving each of the redundant first and second Ethernet board (200, 220).

A second Ethernet controller 222 controlling data and an Ethernet board to be input / output from the electronic switchboard to the Ethernet, a second Ethernet serial transceiver 224 responsible for transmitting and receiving data under the control of the second Ethernet controller 222, and A second coaxial cable transmission / reception matching unit 228 for converting data transmitted / received by the second transformer 226, the coaxial cable 23, or the second transformer 226 to transform the voltage input and output to the 2 Ethernet serial transceiver 224. The second DC / DC converter 230 receiving the DC power and converting the DC power into the DC power suitable for the second Ethernet board 220, and the second redundancy control unit 232 determining the active and standby by controlling the interruption of the Ethernet power. ) Configures the second Ethernet board 220.

Each of the edge pin connectors 214 and 216 connecting the first and second Ethernet boards 200 and 220 described above, and the back board substrates connected to the respective edge pin connectors 214 and 216 and the backplane, respectively. Thin Cheapernet Cable (23) to physically connect through, to transmit and receive control information between the first Ethernet board 200 and the second Ethernet board 220, and to provide a passage of data connected to the 10BASE-2 connector (23) ), And the terminal 24 which is physically connected to the above-described Thin Cheapernet Cable 23 to communicate with Ethernet.

Hereinafter, the preferred embodiment of the present invention will be described in detail.

The first Ethernet control unit 202 in the first Ethernet board 200 controls the data input to the Ethernet from the electronic switchboard and the data output to the electronic switchboard, the redundant first and second Ethernet boards (200, 220) There is no collision of data between the two, and controls the flow of data in the first Ethernet board 200.

The first Ethernet serial transceiver 204 in the first Ethernet board 200 transmits and receives data received from the exchange and data output downstream from the exchange under the control of the first Ethernet controller 202.

The first transformer 206 in the first Ethernet board 200 transforms the voltage input to the first Ethernet serial transceiver 204 and the first coaxial cable transmit / receive matcher 208.

The first coaxial cable transceiver interface (CTI) 208 in the first Ethernet board 200 is a coaxial transformer matcher (CTI) that drives a coaxial cable line in a LAN of a thin Ethernet type.

The first coaxial cable transmission and reception matching unit 208 converts the data input from the first transformer 206 and transmits the data to the outside through the coaxial cable, and receives the data through the coaxial cable to the first Ethernet board 200. Convert to the correct data.

The first DC / DC converter 210 in the first Ethernet board 200 receives the DC power received from the first redundancy control unit 212 and converts the DC power used in Ethernet to each of the Ethernet boards 200 and 220. To the power supply.

The first redundancy control unit 212 in the first Ethernet board 200 receives power from a power board (not shown) built in each switch of the switch, and controls the interruption of the Ethernet power to control the interruption of the first Ethernet board 200. If the state is active, supply power. If it is standby, do not receive power.

Since the operation of the second Ethernet board 220 is similar to that of the first Ethernet board 200, the description of the second Ethernet board 220 described above will be omitted.

Each of the first Ethernet board 200 and the second Ethernet board 220 is accommodated as a back board printed circuit board.

Each edge pin connector 214, 234 is physically connected to each coaxial cable transmit / receive match 208, 228 via a backboard printed circuit board and mounts a 10BASE-2 (BNC) connector on the backboard printed circuit board. .

The coaxial cable derived from the 10BASE-2 connector described above is divided into two network ends 21 and 22 by a T-shaped connector, and physically connects the terminal 24 to the coaxial cable, thereby enabling LAN connection through an exchange. Communication with the exchange and LAN communication with other servers or subscribers is possible.

Here, the terminal 24 preferably uses a workstation-class terminal 24 that can accommodate a plurality of terminals.

As described above, the present invention improves the transfer speed between the active Ethernet board and the standby Ethernet board by using the Ethernet board and the back board printed circuit board board, and processes the communication speed because the processing by the MAU in the board is processed through the cable. In the active / standby structure, power is automatically cut off or inputted, saving power and providing reliable communication.

The principles of the invention have been described above in connection with specific devices, which are described by way of example only, and are not limited to the spirit of the invention as described in the appended claims.

Claims (2)

In the electronic switch exchanged with the first Ethernet board 200 and the second Ethernet board 220, A first Ethernet controller 202 controlling data input / output to the first Ethernet board 200 and the first Ethernet board 200; A first Ethernet serial transceiver 204 for transmitting and receiving data under the control of the first Ethernet control unit 202; A first transformer (206) for transforming a voltage input and output to the first Ethernet serial transceiver (204); A first coaxial cable transmission / reception matching unit (208) for converting data transmitted and received by the first transformer (206); A first DC / DC converter 210 which receives DC power and converts the DC power into DC power suitable for the first Ethernet board 200; The DC power is supplied to the first DC / DC converter 210 and the power of the first Ethernet board 200 is controlled to activate the active power between the first Ethernet board 200 and the second Ethernet board 220. an Ethernet redundancy matching device, comprising: a first redundancy control unit 212 for determining active and standby; A second Ethernet controller 222 for controlling data input and output from the electronic switchboard to the second Ethernet board 220 and the second Ethernet board 220; A second Ethernet serial transceiver 224 that is responsible for transmitting and receiving data under the control of the second Ethernet control unit 222; A second transformer (226) for transforming a voltage input and output to the second Ethernet serial transceiver (224); A second coaxial cable transmission / reception matching unit (228) for converting data transmitted and received by the second transformer (226); And a second DC / DC converter (230) for receiving a DC power and converting the DC power into a DC power suitable for the second Ethernet board (220). The method of claim 1, The first Ethernet board 200 and the second Ethernet board 220, Edge pin connectors 214 and 216 connecting the first and second Ethernet boards 200 and 220, Physically connected via each of the edge pin connectors 214 and 216 and a backboard board connected to the backplane, and transmits and receives control information between the first Ethernet board 200 and the second Ethernet board 220. Thin Cheapernet Cable (23) connected to the 10BASE-2 connector to control the passage of data; Thin Cheapernet Cable (23) physically connected to the Ethernet redundancy matching device, characterized in that configured by connecting the terminal (24) to communicate with the Ethernet.