CN101106427B - Single network bridge optical fiber access system for European data transfer standard - Google Patents
Single network bridge optical fiber access system for European data transfer standard Download PDFInfo
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- CN101106427B CN101106427B CN2006100287933A CN200610028793A CN101106427B CN 101106427 B CN101106427 B CN 101106427B CN 2006100287933 A CN2006100287933 A CN 2006100287933A CN 200610028793 A CN200610028793 A CN 200610028793A CN 101106427 B CN101106427 B CN 101106427B
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Abstract
The invention provides a single net-bridge fiber-access system applied for European standard data transmission, comprising a local end centralized frame, a remote end independent box and a single E1 (European data transmission standard) net-bridge arranged in the local end centralized frame and the remote end independent box; the single E1 net-bridge comprises, in sequential circuit connection, a multi-function Ethernet conversion chip, a physical layer conversion chip, a Microprogram Controller Unit (MCU) circuit which is connected with the multi-function Ethernet conversion chip and the chip circuit, a poking switch setting circuit connected by circuit with the multi-function Ethernet conversion chip and a source input-and-output circuit connected by circuit with the poking switch circuit. The system is a part of multi-service fiber-access system, easy to be arranged, easy for operators to manage and maintain, easy to expand subsequent services, and allows traditional fixed network operators to continuously provide and expand private services.
Description
Technical field
The present invention designs a kind of single E1 (transfer of data European standard) bridge Fiber Access System.
Background technology
The transition of communication network force the network operator to face great challenge.Professional development no longer is confined to simply provide telephone service, faces following problem at least:
1, long-distance user's access: along with the vast development of rural economy of China, some press for communication service away from the rural area, urban.The communication network network operator wishes to provide professional for the long-distance user under the prerequisite of not investing the increase telephone net node.
2, concentrate user's access: along with the fast development in city, newly-built office building, hotel, residential quarters get more and more.These regional characteristics are that the user concentrates, and are urgent to the demand of various telecommunication services.Lay the copper cable investment simultaneously in these zones big, long in time limit.The network operator wishes and can provide professional cheaply fast.
3, the access of integrated service: terminal use's business demand is different, and is more and more to the demand of new business such as data and image.The network operator wishes to provide speech, data and graphic service by unified system synthesis, avoids overlapping construction.
4, the optimization of network: in order to reduce the cost of operation maintenance, the planning trend of present whole communication network is to reduce local switch node number to provide the source node number with other miscellaneous services, enlarges the capacity and the service radius of each node.Simultaneously existing network is also made great efforts to be optimized, and so-called " Ruling out separate offices and interconnecting them within a network ".
Because the demand of variety classes information is more and more, multiple new business demands such as incident ever-increasing IP data, speech, multi-media image, impelled the transmission network environment of each macroreticular operator that earth-shaking variation has taken place, those were traditional metropolitan area network of main purpose and Access Network all can't satisfy diversified new business transmission and handle on capacity and kind of interface requirement with the carrying simulated voice in the past.
Each tame operator constantly strengthens communication service capabilities after listing, make great efforts to improve the service operation maintenance levels.At large-scale enterprises and institutions, carry out stable private line service based on time division multiplexing/Digital Data Net/asynchronous transfer mode (TDM/DDN/ATM) all the time, interface G.703/V35 is provided.Along with opening gradually of telecommunication market, startup carrier is constantly initiated challenge with the new technology based on optical fiber, and traditional private line service is subjected to increasing competitive pressure.Traditional Ethernet 10/100BaseT only supports 100 meters distance, and part is non-standard can support 200 meters, can not satisfy the requirement of long Distance Transmission far away.
Light cat series, converter series, fiber optical transceiver series and PDH (Pseudo-synchronous Digital Hierarchy) (PDH series) equipment are that a kind of data that each big operator generally adopts insert and transmission means at present, low, the less investment of this mode networking cost, and there is multiple mode available, such as: 2M, V35,10/100M Ethernet, 100M optical Ethernet etc., access via telephone line, the big customer who has satisfied the operator inserts, the Internet bar inserts, the access and the transmission that have solved data and voice are inserted or the like in the sub-district.But satisfy the access and the transmission of multiple business, above-mentioned serial equipment is installed respectively, be not easy to administering and maintaining of network operator, also make troubles for the expansion of follow-up business.
Data communications equipment such as router are mainly used the Leased line business of V35 interface bearing N * 64Kbps, are the main flows that narrow band data inserts all the time.But dispose this type of scheme, must control (DXC) resource near synchronous digital hierarchy/asynchronous transfer mode (SDH/ATM) or data cross, otherwise will utilize high-bit-rate digital subscriber line (HDSL) and telephone wire to extend.And Digital Subscriber Line (DSL) and telephone wire are subjected to crosstalking in high-speed transfer easily and the line quality influence.
Summary of the invention
The invention provides a kind of single network bridge Fiber Access System that is applicable to the European standard transfer of data, for G/V transducer in the multi-service fiber access device provides scheme, make things convenient for the area that does not much possess the light path resource and possess e1 resource, finish the conversion that the E1 bridge connects the Ethernet optical interface device.
In order to achieve the above object, the invention provides a kind of single network bridge Fiber Access System that is applicable to the European standard transfer of data, comprise the centralized frame of local side, far-end stand alone type machine box and be installed in the centralized frame of described local side and the interior single E1 bridge of far-end stand alone type machine box;
The centralized frame of described local side comprises power supply and webmaster dish, also is provided with some interfaces and indicator light;
Described far-end stand alone type machine box includes power supply, also is provided with some interfaces and indicator light;
Described single E1 bridge, comprise multi-functional Ethernet conversion chip, physical layer conversion chip that circuit connects, the microprogram control unit circuit that is connected with multi-functional Ethernet conversion chip, physical layer conversion chip circuit, the DIP switch that is connected with multi-functional Ethernet conversion chip is provided with circuit, and the power supply imput output circuit that is connected with the DIP switching circuit with the microprogram control circuit.
Described single E1 bridge also comprises E1 interface circuit and the ethernet interface circuit that circuit connects described multi-functional Ethernet conversion chip.
The E1 that described multi-functional Ethernet conversion chip comprises the circuit connection becomes frame module and E1 to separate frame module, and E1 becomes frame module mainly to finish the function that signaling, synchronization character, expense is aggregated into frame structure; E1 separate frame module finish prime frame synchronously, the multi-frame and the signaling multi-frame synchronizing function of Cyclic Redundancy Check, and produce various timing signals, synchronous indicating signal and alarm indication signal;
Described multi-functional Ethernet conversion chip also comprises ethernet mac (Ethernet media interviews control) controller and clock recovery unit, the function of mac controller is to handle the Ethernet media interviews to be controlled to frame data, support the Media Independent Interface (MII) of 10M/100M and full and half duplex, standard, have the address filtering function.
Described multi-functional Ethernet conversion chip is connected with the physical layer conversion chip by MII (Media Independent Interface of standard) interface, and the physical layer conversion chip outputs to Ethernet interface by transformer again.
Described E1 interface circuit, input signal is finished the list/pair conversion of HDB3 sign indicating number (high-density bipolar code) after, convert unipolarity HDB3 coding to and deliver to multi-functional Ethernet conversion chip; The unipolarity HDB3 coding of multi-functional Ethernet conversion chip output is delivered to the output of E1 interface circuit through finishing list/pair conversion.
Described MCU (microprogram control unit) links to each other with multi-functional Ethernet conversion chip by I2C interface (a kind of serial data bus interface), manages the internal register of multi-functional Ethernet conversion chip, outputting alarm indication and collection alarm.Link to each other with backboard by UART Universal Asynchronous Receiver Transmitter UART interface, communicate by letter with the webmaster dish.
Described power supply imput output circuit provides the power supply of bridge, and adopts a maximum withstand voltage 6V on+5V, and maximum resettable fuse P1 by electric current 1A impacts power supply when preventing that device interior from breaking down short circuit.
Described DIP switch is provided with circuit and comprises that time slot is provided with the DIP switch and pattern is provided with the DIP switch, and time slot is provided with the DIP switch by the change state, and conversion is input to multi-functional Ethernet conversion chip through serial ports again; Pattern is provided with the IO mouth (input/output interface) that the DIP switch is directly inputted to multi-functional Ethernet conversion chip.
A kind of single network bridge Fiber Access System that is applicable to the European standard transfer of data provided by the invention, it is the part in the multi-service Fiber Access System, mainly utilize SDH (synchronous digital hierarchy) and cable resource, coverage by optic fibre extension TDM (telemetric data monitor) special line, simple installation, be convenient to administering and maintaining of network operator, be convenient to the expansion of follow-up business, make traditional fixed network operator can continue to provide and enlarge private line service.
Description of drawings
Fig. 1 is the structural representation that is applicable to the single network bridge Fiber Access System of European standard transfer of data provided by the present invention.
Embodiment
Followingly specify a kind of better embodiment of the present invention according to Fig. 1:
A kind of single network bridge Fiber Access System that is applicable to the European standard transfer of data comprises the centralized frame of local side, far-end stand alone type machine box and is installed in the centralized frame of described local side and the interior single E1 bridge of far-end stand alone type machine box;
The centralized frame of described local side is provided with power supply and webmaster dish, also comprises some interfaces and indicator light;
Described far-end stand alone type machine box is provided with power supply, some interfaces and indicator light;
Described single E1 bridge, the multi-functional Ethernet conversion chip 1, physical layer conversion chip 2, MCU circuit 3, the DIP switch that comprise the circuit connection are provided with circuit 4 and power supply imput output circuit 8.
In the present embodiment, described multi-functional Ethernet conversion chip adopts the RC7222 chip, and described physical layer conversion chip adopts the KS8721B chip.
Described single E1 bridge also comprises E1 interface circuit and the ethernet interface circuit that circuit connects described multi-functional Ethernet conversion chip.
Described RC7222 chip, the E1 that comprises the circuit connection becomes frame module and E1 to separate frame module, and E1 becomes frame module mainly to finish the function that signaling, synchronization character, expense is aggregated into frame structure; E1 separate frame module finish prime frame synchronously, the multi-frame and the signaling multi-frame synchronizing function of Cyclic Redundancy Check, and produce various timing signals, synchronous indicating signal and alarm indication signal;
Described RC7222 chip also comprises the ethernet mac controller, and function is to handle the Ethernet media interviews to be controlled to frame data, supports the Media Independent Interface (MII) of 10M/100M and full and half duplex, standard, has the address filtering function.
Described RC7222 chip 1 is connected with KS8721B chip 2 by the MII interface, and KS8721B chip 2 outputs to Ethernet interface by transformer again.
Described E1 interface circuit, input signal is finished the list/pair conversion of HDB3 sign indicating number (high-density bipolar code) after, convert unipolarity HDB3 coding to and deliver to the RC7222 chip; The unipolarity HDB3 coding of RC7222 chip output is delivered to the output of E1 interface circuit through finishing list/pair conversion.
Described MCU3 links to each other with the RC7222 chip by the I2C interface, the internal register of management RC7222 chip, outputting alarm indication and collection alarm.Link to each other with backboard by UART Universal Asynchronous Receiver Transmitter UART interface, communicate by letter with the webmaster dish.
Described power supply imput output circuit 8 provides the power supply of bridge, and adopts a maximum withstand voltage 6V on+5V, and maximum resettable fuse P1 by electric current 1A impacts power supply when preventing that device interior from breaking down short circuit.
Described DIP switch is provided with circuit and comprises that time slot is provided with the DIP switch and pattern is provided with the DIP switch, and time slot is provided with the DIP switch by the change state, and conversion is input to the RC7222 chip through serial ports again; Pattern is provided with the IO mouth that the DIP switch is directly inputted to the RC7222 chip.
A kind of single network bridge Fiber Access System that is applicable to the European standard transfer of data provided by the invention, it is the part in the multi-service Fiber Access System, mainly utilize SDH and cable resource, coverage by optic fibre extension TDM special line, simple installation, be convenient to administering and maintaining of network operator, be convenient to the expansion of follow-up business, make traditional fixed network operator can continue to provide and enlarge private line service.
Claims (7)
1. a single network bridge Fiber Access System that is applicable to the European standard transfer of data is characterized in that comprising the centralized frame of local side, far-end stand alone type machine box and is installed in the centralized frame of described local side and the interior single E1 bridge of far-end stand alone type machine box;
Described single E1 bridge, comprise multi-functional Ethernet conversion chip, physical layer conversion chip that circuit connects, the microprogram control unit circuit that is connected with multi-functional Ethernet conversion chip, physical layer conversion chip circuit, the DIP switch that is connected with multi-functional Ethernet conversion chip circuit is provided with circuit, and the power supply imput output circuit that is connected with the DIP switching circuit with the microprogram control circuit
Wherein, described microprogram control unit circuit links to each other with backboard by the UART Universal Asynchronous Receiver Transmitter interface, to communicate by letter with the webmaster dish.
2. the single network bridge Fiber Access System that is applicable to the European standard transfer of data as claimed in claim 1 is characterized in that described single E1 bridge comprises E1 interface circuit and the ethernet interface circuit that circuit connects described multi-functional Ethernet conversion chip.
3. the single network bridge Fiber Access System that is applicable to the European standard transfer of data as claimed in claim 1 is characterized in that the centralized frame of described local side comprises power supply and webmaster dish, also is provided with some interfaces and indicator light.
4. the single network bridge Fiber Access System that is applicable to the European standard transfer of data as claimed in claim 1 is characterized in that power supply that described far-end stand alone type machine box comprises circuit and connect, also is provided with some interfaces and indicator light.
5. the single network bridge Fiber Access System that is applicable to the European standard transfer of data as claimed in claim 1 is characterized in that described multi-functional Ethernet conversion chip comprises the E1 that circuit connects and becomes frame module and E1 to separate frame module.
6. the single network bridge Fiber Access System that is applicable to the European standard transfer of data as claimed in claim 1 is characterized in that described multi-functional Ethernet conversion chip also comprises Ethernet MAC controller and clock recovery unit.
7. the single network bridge Fiber Access System that is applicable to the European standard transfer of data as claimed in claim 1, it is characterized in that described DIP switch is provided with circuit and comprises that time slot is provided with the DIP switch and pattern is provided with the DIP switch, time slot is provided with the DIP switch by the change state, and conversion is input to multi-functional Ethernet conversion chip through serial ports again; Pattern is provided with the input/output interface that the DIP switch is directly inputted to multi-functional Ethernet conversion chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100287933A CN101106427B (en) | 2006-07-11 | 2006-07-11 | Single network bridge optical fiber access system for European data transfer standard |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100287933A CN101106427B (en) | 2006-07-11 | 2006-07-11 | Single network bridge optical fiber access system for European data transfer standard |
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| Publication Number | Publication Date |
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| CN101106427A CN101106427A (en) | 2008-01-16 |
| CN101106427B true CN101106427B (en) | 2011-08-03 |
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| US8116330B2 (en) * | 2009-06-01 | 2012-02-14 | Lsi Corporation | Bridge apparatus and methods for coupling multiple non-fibre channel devices to a fibre channel arbitrated loop |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1306362A (en) * | 2000-03-03 | 2001-08-01 | 深圳市中兴通讯股份有限公司 | Multi-service remote-end integrated unit and its networking method |
| CN1408151A (en) * | 2000-03-01 | 2003-04-02 | 艾利森电话股份有限公司 | Optical fiber network |
| CN2938586Y (en) * | 2006-07-11 | 2007-08-22 | 上海科泰信息技术有限公司 | Single network bridge optical fibre access system for Europe standard data transmission |
-
2006
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1408151A (en) * | 2000-03-01 | 2003-04-02 | 艾利森电话股份有限公司 | Optical fiber network |
| CN1306362A (en) * | 2000-03-03 | 2001-08-01 | 深圳市中兴通讯股份有限公司 | Multi-service remote-end integrated unit and its networking method |
| CN2938586Y (en) * | 2006-07-11 | 2007-08-22 | 上海科泰信息技术有限公司 | Single network bridge optical fibre access system for Europe standard data transmission |
Non-Patent Citations (2)
| Title |
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| 张爱华等.远程网桥的设计与实现.《中原工学院学报》.2004,第15卷(第4期), * |
| 陈立胜.利用现有E1电路实现以太网接入.《通讯世界》.2002,(第89期), * |
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