CN1110168C - Equipment with mixed use of wide-band and narrow-band user boards - Google Patents

Abstract

The present invention provides a device with the mixed use of a broadband ADSL (Asymmetrical Digital Subscriber Loop) and narrowband user boards. By providing corresponding LVDS (Low Voltage Differential Signal) transceivers and on-board connectors on an ATUC (ADSL Termination Unit Central office) board and a WAN (Wide Area Network) board, high-speed broadband ADSL data can conveniently realize the mixed use of the broadband ADSL and the common analog user boards on the machine frames of a common narrowband voice exchanger or an optical network unit (ONU) of an access network in a running cable mode of LVDSs beyond a backboard. The method can realize the smooth transition from a narrowband to a broadband without making any change to the backboard and the machine frame of narrowband voice POTS (Plain Old Telephone Service) and can provide the existing narrowband devices with a method and equipment for being upgraded to a wideband data access function at any moment.

Description

The mixed insertion device of wide-band user boards and narrow-band user boards

The present invention relates to the telecom communication field, especially relate to the design of the telecom communication equipment of the subscriber unit of stored-program control exchange or Access Network remote subscriber access unit.

Existing communication apparatus is when solving broadband ADSL (Asymmetric Digital Subscriber Line) ADSL user plate and narrow-band user boards mixed insertion, the general backboard plate internal bus multiplex mode that adopts, the mixed insertion of user's plate of realization high-speed wideband data user unit ADSL (Asymmeritic Digital subscriber Line) and arrowband simulated voice POTS (PlainOrdinary Telephone Service) in unified machine frame.Backboard inside is divided into high-speed bus and low speed voice bus.The integrated scheme of AnyMedium wide band narrow band and Nokia's wide band narrow band integrative solution as Lucent all belong to the mixed insertion of realizing high-speed wideband data user unit ADSL and common simulation user plate by high speed cabling mode in backboard.

The shortcoming of this scheme is:

1) because inner high speed data/address bus cabling and speech low speed PCM (Pulse CodeModulation) bus cabling adopt the backboard upward wiring simultaneously, cause the connecting line quantity on the backboard more thus; Mix with the low speed cabling at a high speed simultaneously, thereby and the wiring number of plies that needs to increase backboard causes the cost (mainly refer to PCB, its fabric swatch generally requires more than at least 4 layers) of circuit to improve.Access Network optical-fiber network subscriber unit ONU or exchanger user unit for no wideband data ADSL business need can cause the raising of system cost.For example for 384 line common simulation users' cost, because system needs compatible broadband services ADSL business, average each household cost need improve 2-3 yuan, and this is undoubtedly the waste to resource.

2) for the equipment of installation and operation, when needs provide broadband A SL to insert, must change original backboard, construction and installation cost are bigger, and device upgrade improvement expenses height is not easy to narrowband systems smoothly to the broadband system transition.

In addition; the patent US of Lucent 5; 991; 140; Technique for effectively re-arrangingcircuitry to realize a communications service provides a kind of method that connects in subscribers feeder section (promptly in the interior lines of switch the high speed data lines by one-level route protection and distributing frame and ADSL be connected) for ADSL broadband user and arrowband PSTN.This summary of the invention belongs to by subscribers feeder and the patented method that the ADSL subscribers feeder effectively is connected, and does not relate to the improvement of subscriber unit backboard and the content of ADSL and POTS telephone subscriber mixed insertion.

Purpose of the present invention just provides the mixed insertion device of a kind of wide-band user boards and narrow-band user boards, utilize low-voltage differential universal serial bus LVDS (Low Voltage Differential Signal), can on the machine frame of common narrowband voice switch or Access Network optical-fiber network subscriber unit ONU, realize the mixed insertion between broadband A SL and the common simulation user plate easily.Do not need backboard and the machine frame of narrowband voice POTS are done any change, can realize arrowband seamlessly transitting to the broadband.

The invention provides the mixed insertion device of a kind of wide-band user boards and narrow-band user boards, it is characterized in that on local side broadband user ATUC plate and wide area network WAN board, increasing respectively:

The LVDS transceiver is used for sending and receives high speed LVDS data;

Physical connector is used for high speed signal and the outer LVDS high-speed bus of plate on the connecting plate, realizes high-speed bus outer connection from the veneer to the plate;

High-speed wideband ADSL data are by the outer LVDS cabling mode of backboard, realize that the ATUC plate is connected with high-speed bus between the WAN board, and are connected with broadband data network by WAN board.

Below in conjunction with drawings and Examples the specific embodiment of the present invention is described further.

Fig. 1 is a typical LVDS interface structure figure

Fig. 2 is the ATM cell structure chart of additional header bit

Fig. 3 is common arrowband and broadband mixed insertion ATUC plate and WAN board and back plate design figure

Fig. 4 is WAN board provided by the invention and ATUC plate and back plate design figure

Fig. 5 is that LVDS utilizes twisted-pair feeder to realize the outer high speed cabling connection diagram of backboard

Fig. 6 is the subscriber line circuit mixed insertion schematic diagram of ADSL and ONU.

Fig. 7 is the card layout of the DSLAM of ADSL and SLC mixed insertion

Fig. 8 is a DSLAM signal connection layout

The present invention utilizes low-voltage differential universal serial bus LVDS, the data/address bus at a high speed broadband can be broken away from backboard, and directly the outside high speed line of the plate by every ADSL is connected on the multiplexing concentrated interface board in broadband.

Simply introduce low-voltage differential universal serial bus LVDS below.

LVDS interface used in the present invention is generally adaptive mouthful of heat exchange, connect and unclamp LVDS cable and can not cause the uncontrollable data corruption of system side, transmitting element (PM7350) and receiving element (PM7351) at high speed receiver side LVDS) can abandon invalid cell, the cell confusion can show from LOS (dropout Lose of Signal) stand by lamp.In the design of the CMTS DSLAM of ADSL (DigitalSubscriber Line Access Multiplexer), can utilize the low-voltage differential serial data interface between the chip that is used for DSLAM that Canadian PMC_Sierra company provides, adopt the maskless twisted-pair feeder of common 4 cores to realize the highest 200Mbps high speed interface between plate, transmission ultimate range can reach 10m.This technology is used for the access scheme of the DSLAM of ADSL usually purely, and at present, still nobody adopts this technology to be used for the arrowband mixes access with the broadband scheme.

The LVDS interface provides very big flexibility for the application of DSLAM.It is the high speed serial communication connector that a speed can reach 200Mbps (Bit Per Second), has the signal swing of 400mV and the offset voltage of 1.2V; By comparison, ECL and PECL signal have signal swing and the relative supply voltage that depends on more of 800mV.Fig. 1 is a typical LVDS interface, and each connects difference is that a point-to-point connects, and comprises drive part, circuit pack and receiving unit.Voa and Vob are a pair of differential output signals, the signal reference point is A and B, and after by the circuit part, differential signal arrives A ' and B ' point, need terminate through the resistance of 100 ohm of circuit matched impedances at receiving terminal, thereby form Via and Vib input voltage signal at receiving terminal.Vgpd represents the potential over the ground differential voltage that differential signal allows.IEEEP1596.3-1995 has stipulated the technical specification of two kinds of LVDS: general link and short-distance link, the difference of the two are that promptly Vgpd is 925mV in general link, are 50mV in short-distance link.In the present invention, owing to adopt the outer cabling of backboard, need to adopt the standard of general link.

The ATM cell that has additional header bit is carried in serial LVDS connection, and its structure as shown in Figure 2.In data structure, fixing preceding 3 byte Byte are that system reserves, the wherein control information of first byte definition up-downgoing data flow, the 2nd byte defined and has been used for the different physical representation PHYID that ADSL inserts, the clock signal of the 3rd byte representation LVDS and Operation and Maintenance signal, the optional usefulness 1 of user definition byte or 2 bytes, a 4-6 byte in user data packet header and a verification sequence HCS are the ATM load byte of 48 bytes then.Transmitting element and receiving element at LVDS are placed on system additional 4 byte Byte headers and 1 a detection sequence byte Byte in the data structure of LVDS sending direction; At receiver side, high-speed information element is peelled off extra byte Byte, and remaining structured data continues transparent transmission.Sending data at a high speed handles from the highest order serialization.Transmitter side inserts 8 correct cyclic redundancy check (CRC) code and protects asynchronous transfer mode ATM header and additional byte byte among the byte Byte of HCS; The cell of mistake is added up and is thrown away.Receiver side utilizes the byte decision cell delineation of HCS, in the time of can not setting up the cell adjustment, causes the cell delineation warning.

The local side apparatus of ADSL is combined with the 384ONU system by DSLAM to be formed, and can realize the mixed insertion of local side broadband with product plate ATUC and SLC, DLC.In the broadband and narrowband mixed insertion scheme that adopts at present, the design of ATUC plate, WAN board and backboard as shown in Figure 3, employing be the cell bus Cell Bus plate upward wiring mode of walking similar high-speed atm on the backboard.ATUC plate 200 at first passes through hybrid circuit 206 for the signal that the twisted-pair feeder circuit from ADSL obtains at this moment, and the uplink and downlink data that hybrid circuit 206 separates ADSL provide low-pass filtering for upstream data, adopt the high-pass filtering mode for upstream data.Simultaneously, hybrid circuit 206 is finished the duplex transmission of data by the collector coupled mode.Pass through corresponding reception (RX) then and send the line drive circuit 205 of (TX), the received signal of the AFE (analog front end) of the signal that passes through the circuit amplifier that sends data and ADSL is provided.AFE (analog front end) 204 is finished necessary high-speed a/d of system and D/A conversion.The data that receive are carried out Discrete Multitone modulation and the demodulation DMT (Discrete Multi ToneModulation) of ADSL at the Digital Signal Processing part DSP 203 (digital SignalProcessing) of ADSL, data flow generally adopts ATM cell wideband bus Cell Bus (X) the bus multiple connection mode that is similar to by the high-speed data ATM bus in the physical layer interface Utopia 2 multiple connections formation broadband of ATM then.Under this bus mode, all high speed data buss must connect up on backboard 300, therefore system's existing arrowband simulation inserts or switch POTS telephone subscriber, if must change the backboard of existed system when realizing broadband user's upgrading or mixed insertion, because backboard has a large amount of broadband high-speed data/address buss and arrowband pcm bus, make fabric swatch impossible on common 2 layers of PCB, must adopt at least 4 layers of PCB cloth plate technique, increase the cost of system greatly.This mode can be applied among the pure fully ADSL.But it is in the system that needs ADSL and common arrowband Analog Subscriber Line Board mixed insertion, just not too suitable.

The mixed insertion device of a kind of broadband A SL provided by the present invention and narrow-band user boards, transceiver and the physical connector of LVDS are placed on ATUC plate 200 and the WAN board 100, utilize LVDS low-voltage differential universal serial bus mode to realize the mixed insertion of broadband A SL plate and arrowband Analog Subscriber Line Board.Thereby having solved common backboard is difficult to walk the high speed bus and seamlessly transits in existing narrow-band communication equipments such as switch and access network equipment upgrade to the problem that broadband A SL inserts subscriber unit.The design of WAN board provided by the invention and ATUC plate and backboard as shown in Figure 4.Improved ATUC and WAN board all increase the transceiver 110,210 of corresponding LVDS, like this, the broadband high-speed data/address bus (Z) that comes out at ATUC plate 200 can be directly (transceiver of corresponding LVDS and the device of physical connector lay the position when only needing to adjust the design of circuit PCB fabric swatch by the back cabling (Figure 4 shows that the back cabling mode) of ATUC plate 200 or preceding cabling mode, can be at the front panel cabling of ATUC plate) be connected to WAN board 100, again by LVDS bus processor 104, ATM layer handle 102 and Wide Area Network interface 103 be connected to broadband data network.Common voice bus cabling still inserts connection and the exchange that peripheral relay process unit PT plate 400 is realized speech 64Kb/s link by conventional speech PCM high-speed bus HW (Y) on backboard 300.Improved WAN board need increase transceiver 110 and 100 ohm of matched impedance circuit 140 and the physical connector 120 of the LVDS of some, as selects 12 road transceivers, 100 ohm of matched impedance circuit and physical connector for use.In the design of WAN board 100, have relative independentability, only need in connecting the physical region that can reach, the 10m twisted-pair feeder get final product.

Comprise the concrete connection layout of the connection of physical connector between the bus of the LVDS of improved ATUC plate 200 and WAN board 100 with reference to LVDS shown in Figure 5.As shown in Figure 5, the transceiver of ATUC plate 200 is 210, and wherein 211 is the TX transmit port, and 212 is the RX receiving port; The transceiver of WAN board 100 is 110, and wherein 111 is the TX transmit port, and 112 is the RX receiving port.Broadband A SL data flow at a high speed forms high speed LVDS data by the data framing device (can adopt PMC7350) of LVDS, flank speed can reach 200Mbps, at first the circuit by LVDS drives, by the corresponding transceiver port 211 of LVDS, 212, by jumper zone on the plate 230, be connected to the socket 3 ' and the socket 4 ' of connector 220 on 6 central layers that are positioned at the ATUC plate that meet the IEEE1394 standard, then by surpassing 5 class unshielded twisted pair UTP5 (Z) outside plate, be connected on the socket 5 and socket 6 of connector 120 on 6 central layers that meet IEEE1394 of WAN board of above-mentioned 1U structure, be connected to the corresponding transceiver port 111 of LVDS by jumper zone 130,112, be connected at last on the data framing device (PM7351) of LVDS of WAN board 100, realize the outer high speed cabling of plate of high speed data bus thus.Accordingly, the socket 3 of WAN board 100 and the socket 5 ' of ATUC plate 200, being connected of two low-voltage differential buses of the transmission of the LVDS of socket 6 ' the corresponding WAN board 100 of the socket 4 of WAN board and ATUC.Socket 1 (or 1 ') on the socket of IEEE1394 standard and 2 (or 2 '), a kind of optional mode as power supply power supply between plate, the power supply of redundancy backup can be provided between plate, this plate provides the power supply of 48V power supply, wherein socket 1 (or 1 ') is as power input or receiving terminal, and the socket 1 ' of ATUC plate and the socket 1 of WAN are interconnected, the public shielding that the socket 2 ' of ATUC and the socket of WAN 2 are connected as the LVDS system GND, the two connects, as the public ground of system between plate.

In the concrete realization, cabling or back cabling dual mode before system's on line mode can adopt.Preceding cabling: promptly draw twisted-pair feeder, utilize the LVDS signal at the corresponding LVDS high-speed serial bus signaling interface that is sent on the twisted-pair feeder on the wide area network WAN board 100 by the high density socket on the ATUC plate 200 corresponding panels.

Back cabling: promptly draw twisted-pair feeder by the high density LVDS socket on the ATUC plate 200 corresponding backboards, and then utilize the LVDS signal realizing that high speed data bus mode of cabling backboard outside is realizing on the twisted-pair feeder rather than in the transmission on the backboard, thereby be connected at the twisted-pair feeder of connection LVDS on the rear board position of ATUC200 on the transceiver 110 of corresponding LVDS of WAN board 100.

Fig. 6 shows the subscriber line circuit mixed insertion schematic diagram of ADSL and ONU.Speech SLC and narrow band service such as DDN are connected to backboard by PCM HW (High Way) bus of arrowband by the corresponding 96 core sockets of each plate, in plate, adopt cabling mode in the plate, be connected on the 96 core backboard sockets of peripheral processes relaying PT plate, the PCM signal is connected to the PT plate via the backboard socket then, finish the exchange of low speed signal and the work that continues, all arrowband PCM HW bus trends are: narrow-band user boards-96 core socket-backboard-96 core socket-PT plate, backboard is as the connection hinge of bus signals between plate.Insert in the ADSL unit the wideband data user, pass through the broadband high-speed data/address bus of the multiplexing back formation of ATUC plate based on the high speed signal of ATM (Asynchronous Transform Mode) or IP (Internet Protocol), utilize the differential signal of above-mentioned LVDS holding wire to drive bus, with the broadband high-speed data bus signal by meeting the connection of IEEE1394 physical criterion, directly draw from the high density socket of ATUC plate, be connected on the cable of 4 LVDS, wherein receiving and transmitting signal respectively is 2 differential signals.The broadband high-speed data/address bus is not by aspect between common High speed rear panel connecting plate, but the cabling mode of employing high speed LVDS outside backboard, be implemented in that high-speed bus is connected between the plate of ATUC plate and WAN board in the access of broadband A SL, same, the transceiver circuit of corresponding LVDS on WAN board, the signal of the ATUC plate that needs are inserted is connected on the correspondence transmitting-receiving port of WAN board by the outer physics cable of plate.The cabling of all broadband high-speed buses of Shi Xianing is thus: wideband data user plate (ATUC)-LVDS transceiver-4 core LVDS twisted-pair feeder-LVDS transceiver-WAN board.

The needs that WAN board inserts according to the broadband user, can provide 4 * 12=48 road LVDS HSSI High-Speed Serial Interface to the ATUC end of ADSL, provide the interface of the high speed multiple connection of ATM cell to the high-speed backbone data network of 155M, 34M or 8E1 or 4E1 to NNI on the Network-Node Interface in wide area broadband (Network NetworkInterface).WAN board is independent of subscriber unit and adopts the 1U (subrack structure of the long measure of 1U=44.54mm).Fig. 7 shows the plate position relation of the DSLAM of ADSL and SLC mixed insertion, and Fig. 8 shows DSLAM signal annexation.With reference to the plate position illustration of the DSLAM shown in Fig. 7 and Fig. 8 and the on line between machine frame, just can realize the local side wide-band user boards ATUC of ADSL and the common narrow-band user SLC mixed insertion of Optical Access Network ONU (Optical NetworkUnit).In Fig. 7, ATUC/SLC is illustrated in this The attracted numbers, promptly can insert plain old telephone SLC plate, and also replaceable is user's plate of the ADSL in broadband.The broadband, arrowband that utilizes this invention design to realize is integrated or seamlessly transit the backboard that need not the system that changes and former arrowband cabling.This can reduce a large amount of installation and upgrade expenses in the application installation process of reality, reduce a large amount of expenses of extra construction.In this system, system adopts 19 inches standard rack structures, and the subscriber unit in each arrowband and broadband is 6U, 17 groove positions, each unit, wherein, power supply POWER takies 2 groove positions (1-2), and peripheral relay process unit PT takies 2 groove positions (9-10), and subscribers feeder subscriber line test plate takies a groove position (17), other 12 groove positions all can be used for arrowband or broadband user's access (3-8,11-16), system can flexible configuration, has the function of access band arrowband one.

The outer connected mode of the plate of above-mentioned LVDS bus, only need in standard rack, to increase again the subrack WAN board of new design 1U, can when original equipment is not made great changes, not patch highspeed user unit ATUC plate at the backboard plate place of previous system easily, realize the access of ADSL broadband access system.After the ATUC plate has solved the high speed routing problem, remaining power line and operations necessary are safeguarded line, can adopt backboard to solve or the cable interface by LVDS is connected to WAN board to unnecessary cable and solves, can realize the SDM plate position mixed insertion of SLC, DLC, ATUC, DDN thus.

The interface of the ATUC plate that the present invention adopts provides LVDS high speed serialization differential signal interface, this signal rate is the 200M high speed signal, this interface circuit adopts the multiple connection interface chip PMC7350/DUPLEX of PMC, the ADSL nest plate adopts the chip of the UTOPIA L2 (ATM physical layer interface standard) that directly goes out ATM, the Control Software of all the G.lite asymmetric digital subscriber line of separator (not with) and G.DMT (asymmetric digital subscriber line of band separator) all is solidificated in the read only memory ROM (Read Only Memory) of chip internal, provides control and management bus (CTRL BUS) interface to the outside.

WAN board provides the interface with the network side of wide area broadband data network, finishes the multiplexing of 48 road ADSL (G.DMT) or 192 road ADSL (G.lite) by backboard high speed LVDS bus.WAN board comprises three types: WAN1, IAM1 and IAM2.

WAN1: the physics and the circuit driving interface that on the WAN1 plate, adopt LVDS, the outer multiple connection function of backboard of broadband high-speed signal bus of the ATUC plate of 48 road LVDS can be provided, adopt the driving receiving circuit PMC7351 and the transformer-coupled circuit that is used for front end of LVDS at this plate, on any point-to-point connection of WAN board and ATUC plate, provide 100 ohm line terminal matched impedance simultaneously.The physics optical interface based on the STM-1 of ATM cell of 155M is provided.Light transmitting-receiving interface is at frame front end outgoing interface, the optical loop protection with reference to ITU 155.52Mbit/s optical interface (STM1) G.957 with Ministry of Posts and Telecommunications's GB/T15941-1995 technical standard promulgated by the ministries or commissions of the Central Government.

The IAM1 plate provides the interface of 34M E3.

The IAM2 plate provides the interface of 8 * 2M and 4 * 2M plate IAM.

WAN board (comprising WAN1, IAM1 and IAM2) all provides the RS232 serial ports to be connected with the concentrated peripheral processes cell board PT plate of ONU, realizes the centralized maintenance management to the ADSL system.Adopt RS232 bus repeating query token ring communication mode between ATUC and WAN board.On ATUC plate and WAN board, all have CPU101,201 and transceiver and the bus multiplexer of LVDS interface signal is provided, can dispose the speed of each LVDS and the operating state of monitoring LVDS system by CPU, in case LVDS dropout or step-out all can be lighted the automatically close up mode of link of corresponding stand by lamp or employing by CPU and stop the communication of this LVDS link.

For the high speed external bus of LVDS that the present invention adopts, be excessive ground loop voltage and excessive common-mode noise owing to system connects with being connected main cause that LVDS cable causes damaging, mainly be to come from 50Hz and the harmonic frequency thereof that exchanges AC power supplies.Earthy different pressure reduction that constitute may reach 10 times even higher voltage difference between the frame when thunderbolt, and this voltage causes data corruption easily.This problem can adopt the high-speed pulse transformer to solve by using the physical interface in the LVDS technology.In addition, the LVDS physical interface can use series capacitance to suppress the interference of 50Hz common-mode noise.The LVDS data longly connect 0 or long 1 the situation that connects with what the mode of scrambler had avoided producing the basic circuit shake.

Technical scheme provided by the invention, compatible common speech and high-speed data service are in one.The cost of great reduction system, system upgrades to broadband access by common narrow band access and need not extra replacing backboard, has improved the networking flexibility and the elastification of system greatly.

Adopt the present invention, can be on the equipment of the common speech POTS (Plain Ordinary Telephone Service) of arrowband, broadband data service smoothly is provided, is specially adapted to the mixed insertion of user's plate of high-speed digital subscriber line XDSL (xSerials Digital Subscriber Line) system and common simulation POTS user plate or ISDN (IntegratedService Digital Network).Need not the backboard or the connector of existing system are changed, can take into account the existing investment interests in equipment purchase side simultaneously.Broadband and narrowband user's mixed insertion can be realized in plate position among the ADSL except power panel PWR (POWER) and peripheral processes TU Trunk Unit PT (Periphery Processing Trunk).Simultaneously, need not to change the core bus and the connector of present existing device, can reduce cost greatly for the user of 384 lines.

The present invention compares with plate internal bus mode: aspect cost, and can be because of the user who increases ADSL Cause the extra cost of whole system to rise; At the scene installation aspect reduces the highspeed user low speed is used The interference at family is convenient to install. This invention is applicable to the device upgrade transformation of Access Network and switch, for There is narrow-band devices that the multifunctional equipment that at any time upgrades to the wideband data access function can be provided, therefore has fabulous Market prospects.

Claims (5)

1, the mixed insertion device of a kind of wide-band user boards and narrow-band user boards is characterized in that increasing respectively on local side broadband user ATUC plate (200) and wide area network WAN board (100):

LVDS transceiver (210), (110) are used for sending and receive high speed LVDS data;

Physical connector (220), (120) are used for high speed signal and the outer LVDS high-speed bus of plate on the connecting plate, realize high-speed bus outer connection from the veneer to the plate;

High-speed wideband ADSL data on the ATUC plate (200) are connected to WAN board (100) by LVDS transceiver (210) and physical connector (220) and with the outer LVDS cabling mode of backboard successively, realize that by the physical connector (120) on the WAN board (100) and LVDS transceiver (110) ATUC plate (200) is connected with high-speed bus between the WAN board (100), and pass through WAN board (100) and be connected with broadband data network.

2, the mixed insertion device of wide-band user boards as claimed in claim 1 and narrow-band user boards is characterized in that the annexation of described physical connector (220), (120) is as follows:

Broadband A SL data flow at a high speed forms the circuit driving that high speed LVDS data are at first passed through LVDS by the data framing device of LVDS, by the corresponding transceiver port of LVDS, by jumper zone on the plate (230), be connected on the socket (3 ') and socket (4 ') of connector (220) on 6 central layers of ATUC plate (200), then by surpassing 5 class unshielded twisted pair UTP5 outside plate, be connected on the socket (5) and socket (6) of connector (120) on 6 central layers that meet IEEE1394 of WAN board (100), wherein socket (3 ') gang socket (5), socket (4 ') gang socket (6), be connected to the corresponding transceiver port of LVDS by jumper zone (130), be connected to the data framing device of the LVDS of WAN board at last;

The socket (3) of WAN board (100) and the socket (5 ') of ATUC plate (200), being connected of two low-voltage differential buses of the transmission of the LVDS of the corresponding WAN board of socket (6 ') (100) of socket of WAN board (4) and ATUC (200);

The socket (1) of the socket (1 ') of ATUC plate and WAN is connected, as power input or receiving terminal;

The socket (2) of the socket (2 ') of ATUC plate and WAN is connected, as the public shielding ground of system between plate.

3, the mixed insertion device of wide-band user boards as claimed in claim 1 or 2 and narrow-band user boards, it is characterized in that the outer LVDS cabling mode of described backboard is preceding cabling mode, promptly, utilize the LVDS signal at the corresponding LVDS high-speed serial bus signaling interface that is sent on the twisted-pair feeder on the WAN board (100) by high density LVDS socket and twisted-pair feeder on the corresponding panel of ATUC plate (200).

4, the mixed insertion device of wide-band user boards as claimed in claim 1 or 2 and narrow-band user boards, it is characterized in that the outer LVDS cabling mode of described backboard is the back cabling mode, promptly draw twisted-pair feeder by the high density LVDS socket on the corresponding backboard of ATUC plate (200), and then utilize the LVDS signal on the twisted-pair feeder rather than the transmission on backboard (400) realize high speed data bus cabling backboard outside, at ATUC plate (200) thus the rear board position on the twisted-pair feeder of connection LVDS be connected on the transceiver (110) of corresponding LVDS of WAN board (100).

5, the mixed insertion device of wide-band user boards as claimed in claim 1 or 2 and narrow-band user boards is characterized in that described WAN board (100) adopts the subrack structure of 1U.

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