KR100285332B1 - Apparatus for interface of dual etherent - Google Patents

Abstract

PURPOSE: A system for matching ethernet duplication is provided to duplicate ethernet boards without using a special MAU(Medium Attachment Unit) in a full electronic telephone exchange. CONSTITUTION: A backplane board(20) consists of the first ethernet board(200) and the second ethernet board(220). The first ethernet board(200) includes the first ethernet control part(202), the first ethernet serial transceiver(204), the first transformer(206), an edge pin connector(214), the first relay(208), the first relay driving part(210), and the first duplication control part(212). The first ethernet control part(202) controls input/output data and the first ethernet board(200). The first ethernet serial transceiver(204) transmits and receives data by the control of the first ethernet control part(202). The first transformer(206) transforms the voltage inputted and outputted to the first ethernet serial transceiver(204). The first relay driving part(210) executes switching for the first relay(208). The first duplication control part(212) controls the driving of the first relay driving part(210) after determining whether the first ethernet board(200) is in active or standby state. The second ethernet board(220) includes the second ethernet control part(222), the second ethernet serial transceiver(224), the second transformer(226), an edge pin connector(216), the second relay(228), the second relay driving part(230), and the second duplication control part(222). An 8-pin telephone connector(21), connected between the edge pin connector(214,216) and a workstation(24), combines the transmitting data lines from the first and second relays(208,228) and them to the workstation(24).

Description

Ethernet Redundant Matching Device {APPARATUS FOR INTERFACE OF DUAL ETHERENT}

The present invention relates to an Ethernet redundant matching device, and more particularly, to an Ethernet redundant matching device of an electronic exchange requiring Ethernet redundant 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 at distances of up to 2.5Km at data rates of 10Mbps between up to 1,024 terminals.

Thin Ethernet redundancy in an electronic exchange was implemented 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.

The 15-pin D-sub connectors 108 and 128 of each of the redundantly mounted Ethernet boards 100 and 120 are connected to the respective MAUs 13 and 14 through the Attachment Unit Interface (hereinafter referred to as AUI) cables 11 and 12. ), And each of the MAUs 13 and 14 is connected to the terminal 24 through a coaxial cable 15.

Each of the redundant Ethernet boards 100 and 120 is capable of serial communication with the Ethernet control unit 102 and 122 having a microprocessor, the Ethernet control unit 102 and the Ethernet serial transceivers 104 and 124 and the Ethernet control unit. Ethernet serial transceivers 104, 124 and AUI 11, 12, each of which is capable of serial communication with 102 and enables direct connection with AUI cables 108, 128 or twisted pair cables. Alternatively, between the twisted pair cable, there are respective transformers 106 and 126, which are passive elements, and 15-pin D-SUB connectors 108 and 128, which are connected to respective AUI cables 11 and 12, respectively.

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 ( 13, 14), there is a problem that the MAU (13, 14) must be used in duplicate.

The present invention has been made to solve the above-mentioned drawbacks of the prior art, and an object of the present invention is to provide an Ethernet duplex matching device that is redundant without using a separate MAU in an electronic switchboard.

In order to achieve the above object, the present invention includes a backplane board for connecting data between boards of an exchanger to transfer data between redundant boards or between a plurality of boards. The first and second Ethernet boards are provided with a second Ethernet board, and the first and second Ethernet controllers for controlling the input / output data and the respective Ethernet boards are transmitted and received by the control of the first and second Ethernet controllers. A first switch switched between the first and second Ethernet serial transceivers, the first and second transformers for transforming voltages input and output to the first and second Ethernet serial transceivers, the edge pin connector, and the edge pin connector. And second relays 208 and 228, first and second relay drivers for switching the first and second relays, and active and standby of the first and second Ethernet boards. A first and second redundancy control unit is configured to control the driving of the first and second relay driving units by determining this, and is connected between the edge pin connector and the work station to combine the transmission data lines from the first and second relays. It is provided to the station and has an 8-pin telephone connector that combines the lines of received data from the workstation.

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.

<Description of the code | symbol about the principal part of drawing>

20: backplane board 200, 220: first, second Ethernet board

202 and 222: first and second Ethernet control unit

204, 224: first and second Ethernet serial transceiver

206, 226: first and second transformer

208, 228: first and second relay

210, 230: first and second relay drive unit

212 and 232: first and second redundant control unit

22: twisted pair cable

24: workstation

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 all-electronic exchange suitable for Ethernet duplex matching according to the present invention will be described. A backplane for connecting data between boards of an exchange to transfer data between redundant boards or multiple boards is described. It is provided with the board 20, the backplane board 20 is configured with a redundant first Ethernet board 200 and the second Ethernet board 220, the first Ethernet board 200 and the second Ethernet board 220 The first and second Ethernet control unit 202, 222, and the first and second Ethernet control unit 202, 222 controlling the input / output data and the respective Ethernet boards 200, 220. First and second Ethernet serial transceivers 204 and 224 for transmitting and receiving data under control of the first and second transformers for transforming voltages input and output to the first and second Ethernet serial transceivers 204 and 224. First and second transformers 206 and 226 with edge pin connectors 214 and 216 First and second relays 208 and 228 that are switched between the pin connectors 214 and 216, and First and second relays that switch the first and second relays 208 and 228. The first and second relay drivers 210 may be determined by determining active and standby states of the drivers 210 and 230 and the first and second Ethernet boards 200 and 220. First and second redundancy control unit 212, 232 to control the driving of the 230, and is connected between the edge pin connector 214, 216 and the work station 24 and the first and second A transmission data line from the second relays 208, 228 is summed and provided to the workstation 24, and has an 8-pin telephone connector 21 that sums the lines of the received data from the workstation.

Hereinafter, referring to FIG. 2, a block diagram of an electronic switch that is suitable for Ethernet duplex matching will be described in detail. Referring to FIG. 2, the first Ethernet controller 202 of the first Ethernet board 200 switches from Ethernet to Ethernet. By controlling the input data and the data output to the electronic switch, there is no data collision between the duplicated first and second Ethernet boards 200 and 220, 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 relay 208.

The first relay 208 in the first Ethernet board 200 switches the data input from the first transformer 206 to the 8-pin telephony connector 21, and conversely, the 8-pin telephony connector 21. Provides the data at the first transformer 206.

The first relay driver 210 in the first Ethernet board 200 may drive the first relay 208 under the control of the first redundancy control unit 212.

The first redundancy control unit 212 in the first Ethernet board 200 serves to control whether to be active in standby or standby in redundancy of the Ethernet board, and to stand by. 24) The flow direction of the data between is detected in the data information to connect or crack the relay.

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

The first Ethernet board 200 and the second Ethernet board 220 are active in a standby state and rapidly perform a task performed by another Ethernet board (which was in an active state) during redundancy switching. Each edge pin connector 214, 234 is physically connected to each of the relays 208, 228 via a backboard printed circuit board, and mounts a 10BASE-2 (BNC) connector on the backboard printed circuit board.

The coaxial cable from the 10BASE-T connector described above enables the LAN connection through the exchange by physically connecting the workstation 24 to the coaxial cable, thereby enabling communication with the exchange and LAN communication with other servers or subscribers. Lose.

Since the LAN card is also built into the workstation 24, it matches each of the redundant Ethernet boards 200 and 220.

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.

As described above, the present invention has an effect that the Ethernet boards can be duplicated without using a separate MAU by configuring a redundancy control unit, a relay driver and a relay for controlling redundancy in the Ethernet board.

Claims (1)

And a backplane board 20 for connecting data between boards of the exchange to transfer data between redundant boards or between multiple boards: The backplane board 20, The first Ethernet board 200 and the second Ethernet board 220 which are configured in a redundant configuration, wherein the first and second Ethernet board 200, First and second Ethernet controllers 202 and 222 controlling input / output data and respective Ethernet boards 200 and 220, and First and second Ethernet serial transceivers 204 and 224 for transmitting and receiving data under the control of the first and second Ethernet control units 202 and 222, First and second transformers 206 and 226 for transforming voltages input and output to the first and second Ethernet serial transceivers 204 and 224, Edge pin connectors 214 and 216, first and second relays 208 and 228 switched between edge pin connectors 214 and 216, First and second relay drivers 210 and 230 for switching the first and second relays 208 and 228, Determining active and standby of the first and second Ethernet boards 200 and 220 to control the driving of the first and second relay drivers 210 and 230. First and second redundant control unit 212, 232, Connected between the edge pin connectors 214, 216 and the work station 24 to combine and transmit the transmit data lines from the first and second relays 208, 228 to the work station 24, An Ethernet redundancy matching device having an 8-pin telephone connector (21) for summing lines of received data from a workstation.

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