CN101106429A - Optical access system for optical modem using high speed synchronization data exchange standard - Google Patents
Optical access system for optical modem using high speed synchronization data exchange standard Download PDFInfo
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- CN101106429A CN101106429A CNA2006100287952A CN200610028795A CN101106429A CN 101106429 A CN101106429 A CN 101106429A CN A2006100287952 A CNA2006100287952 A CN A2006100287952A CN 200610028795 A CN200610028795 A CN 200610028795A CN 101106429 A CN101106429 A CN 101106429A
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Abstract
A high-speed synchronous data exchange standard optical modem fiber access system comprises a local end centralized frame, a remote end independent box and a V35 optical modem arranged in the local end centralized frame and the remote end independent box; the V35 optical modem comprises, in sequential circuit connection, a setting control circuit, a network management single chip microcomputer, a photo-electric conversion circuit and a Complex Programmable Logic Device (CPLD). A high-speed synchronous data exchange standard optical modem fiber access system provided in the invention is a part of multi-service fiber-access system, and mainly utilizes Synchronous Digital Hierarchy (SDH) and cable resources, and allows traditional fixed network operators to continuously provide and expand private services by extending the coverage area of Time Division Multiplex (TDM) private line via optical fiber.
Description
Technical field
The present invention relates to a kind of optical access system for optical modem using high speed synchronization data exchange standard, relate in particular to the optical modem using high speed synchronization data exchange standard in a kind of multi-service 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
A kind of optical access system for optical modem using high speed synchronization data exchange standard provided by the invention, it is the part in the multi-service Fiber Access System, mainly utilize SDH (synchronous digital hierarchy) and cable resource, by the coverage of optic fibre extension TDM (time division multiplex system) special line, make traditional fixed network operator can continue to provide and enlarge private line service.
In order to achieve the above object, the invention provides a kind of V35 (a kind of high-speed synchronous data exchange standard of International Telecommunications Union's definition) optical modem Fiber Access System, 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 V35 optical modem 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 comprises power supply, also is provided with some interfaces and indicator light;
Power supply in centralized frame of described local side and the far-end stand alone type machine box is described V35 optical modem power supply;
Described V35 optical modem comprises that circuit successively connects is provided with control circuit, webmaster single-chip microcomputer, photoelectric switching circuit and CPLD (CPLD);
Described V35 optical modem also comprises the V35 interface circuit that circuit connects described photoelectric switching circuit and CPLD (CPLD), and this V35 interface circuit connects the V35 interface on centralized frame of described local side and the far-end stand alone type machine box;
Described V35 optical modem also comprises the optical interface circuit that circuit connects described CPLD (CPLD), and this optical interface circuit connects the optical interface on centralized frame of described local side and the far-end stand alone type machine box;
Described photoelectric switching circuit connects the indicator light on the centralized frame of described local side and the far-end stand alone type machine box, by indicator light can checkout equipment state;
The described control circuit that is provided with comprises corresponding some DIP switches and the plurality of chips that is provided with, and by the DIP switch different conditions is set, and after latching through chip, by the webmaster single-chip microcomputer configuration information configuration is write chip;
Described webmaster single-chip microcomputer is by data/address wire, the configuration information of DIP switch and high-rise webmaster is write in the register of photoelectric switching circuit, use at local side, equipment working state and the warning information that collects reported to the webmaster dish by UART Universal Asynchronous Receiver Transmitter (UART) interface;
Described photoelectric switching circuit comprises V35 interface module, optical interface module, microprocessor (MP) interface module and the alarm output module that circuit connects;
The V35 interface module provide one with being connected of data terminal equipments such as router;
The optical interface module is made of optical transmission module and Optical Receivers;
Optical transmission module carries out multiplexing and encoding, scrambler according to the clock that timing control module TDC provides with V35 to be sent and other overhead data, then code stream is sent to the optical interface circuit;
Optical Receivers is mainly finished from the optical interface circuit and is received data, extracts line clock, finishes data de-scrambling then, separates frame, recovers V35 and overhead data, the supervision and the circuit Bit Error Code Statistics of the line correlation of going forward side by side alarm;
The Microprocessor Interface module functions provides a direct interface corresponding with the webmaster single-chip microcomputer, finishes by the webmaster single-chip microcomputer internal register of photoelectric switching circuit is controlled and inquiry;
The alarm output module is exported various alarm indication informations, indicates the operating state of current chip;
Described CPLD (CPLD), comprise several logical blocks (LEs), mainly finish processing to V35 input signal and light signal, improve the reliability of photoelectric switching circuit under operational environments such as high low temperature, also link to each other in addition, solve signals such as equipment work pattern and clock setting selection with configuration bus (PS-BUS) in the photoelectric switching circuit;
The input signal of described V35 interface circuit is finished the list/pair conversion of high-density bipolar code HDB3 sign indicating number by behind the transformer, becomes to deliver to photoelectric switching circuit again after unipolar code is sent into the CPLD processing; The unipolar code of photoelectric switching circuit output is finished list/pair conversion through transformer, delivers to output interface;
Described optical interface circuit comprises one to be received data wire, one and sends out data wire, and can produce light mouth alarm indication signal, this optical interface circuit the optical signal equalizer of receiving is amplified and regeneration after output to CPLD; Optical interface circuit alarm indication signal is high if light signal receives normally, and it is low that light signal receives undesired then alarm indication signal; It is light signal that CPLD is with adjusted data to give the optical interface circuit conversion through sign indicating number.
A kind of optical access system for optical modem using high speed synchronization data exchange standard 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 (time division multiplex system) 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 of the optical modem using high speed synchronization data exchange standard in a kind of optical access system for optical modem using high speed synchronization data exchange standard provided by the invention.
Embodiment
Following according to Fig. 1, specify a kind of better embodiment of the present invention:
A kind of V35 (a kind of high-speed synchronous data exchange standard of International Telecommunications Union's definition) optical modem Fiber Access System 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 V35 optical modem of far-end stand alone type machine box;
The centralized frame of described local side comprises power supply 8 and webmaster dish, also is provided with some interfaces and indicator light 7;
Described far-end stand alone type machine box comprises power supply 8, also is provided with some interfaces and indicator light 7;
Power supply 8 in centralized frame of described local side and the far-end stand alone type machine box is described V35 optical modem power supply;
Described V35 optical modem comprises that circuit successively connects is provided with control circuit 101, webmaster single-chip microcomputer 102, photoelectric switching circuit 103 and CPLD (CPLD) 104;
Described V35 optical modem also comprises the V35 interface circuit 105 that circuit connects described photoelectric switching circuit 103 and CPLD (CPLD) 104, and this V35 interface circuit 105 connects the V35 interface on centralized frame of described local side and the far-end stand alone type machine box;
Described V35 optical modem also comprises the optical interface circuit 106 that circuit connects described CPLD (CPLD) 104, and this optical interface circuit 106 connects the optical interface on centralized frame of described local side and the far-end stand alone type machine box;
Described photoelectric switching circuit 103 connects the indicator light 7 in centralized frames of described local side and the far-end stand alone type machine box, by indicator light 7 can checkout equipment state;
The described control circuit 101 that is provided with comprises corresponding some DIP switches and the plurality of chips that is provided with, and by the DIP switch different conditions is set, and after latching through chip, by webmaster single-chip microcomputer 102 the configuration information configuration is write chip;
In the present embodiment, described webmaster single-chip microcomputer 102 adopts SST89V564D, this webmaster single-chip microcomputer 102 is by data/address wire, the configuration information of DIP switch and high-rise webmaster is write in the register of photoelectric switching circuit 103, use at local side, equipment working state and the warning information that collects reported to the webmaster dish by UART Universal Asynchronous Receiver Transmitter (UART) interface;
In the present embodiment, described photoelectric switching circuit 103 adopts the RC7235 chip, and this photoelectric switching circuit 103 comprises V35 interface module, optical interface module, microprocessor (MP) interface module and the alarm output module that circuit connects;
The V35 interface module provide one with being connected of data terminal equipments such as router;
The optical interface module is made of optical transmission module and Optical Receivers;
Optical transmission module carries out multiplexing and encoding, scrambler according to the clock that timing control module TDC provides with V35 to be sent and other overhead data, then code stream is sent to the optical interface circuit;
Optical Receivers is mainly finished from the optical interface circuit and is received data, extracts line clock, finishes data de-scrambling then, separates frame, recovers V35 and overhead data, the supervision and the circuit Bit Error Code Statistics of the line correlation of going forward side by side alarm;
The Microprocessor Interface module functions provides a direct interface corresponding with the webmaster single-chip microcomputer, finishes by webmaster single-chip microcomputer 102 internal register of photoelectric switching circuit 103 is controlled and inquiry;
The alarm output module is exported various alarm indication informations, indicates the operating state of current chip;
In the present embodiment, described CPLD 104 adopts the EPM240 chip, this CPLD 104 comprises several logical blocks (LEs), mainly finish processing to V35 input signal and light signal, improve the reliability of photoelectric switching circuit 103 under operational environments such as high low temperature, also link to each other in addition, solve signals such as equipment work pattern and clock setting selection with configuration bus (PS-BUS) in the photoelectric switching circuit 103;
The input signal of described V35 interface circuit 105 is finished the list/pair conversion of high-density bipolar code HDB3 sign indicating number by behind the transformer, becomes to deliver to photoelectric switching circuit 103 again after unipolar code is sent into the CPLD processing; The unipolar code of photoelectric switching circuit 103 outputs is finished list/pair conversion through transformer, delivers to output interface;
In the present embodiment, described optical interface circuit 106 adopts the optical module of 3.3V LVTTL (level formula transistor-transistor logic circuit) level, this optical interface circuit 106 comprises one and receives data wire, one data wire, and can produce light mouth alarm indication signal, this optical interface circuit 106 optical signal equalizer received is amplified and regeneration after output to CPLD; Optical interface circuit 106 alarm indication signals are high if light signal receives normally, and it is low that light signal receives undesired then alarm indication signal; CPLD is with adjusted data to give optical interface circuit 106 through sign indicating number and is converted to light signal.
A kind of optical access system for optical modem using high speed synchronization data exchange standard 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 (time division multiplex system) 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 (9)
1. optical access system for optical modem using high speed synchronization data exchange standard, it is characterized in that, 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 V35 optical modem of far-end stand alone type machine box;
Described V35 optical modem comprises that circuit successively connects is provided with control circuit (101), webmaster single-chip microcomputer (102), photoelectric switching circuit (103) and CPLD (104).
2. a kind of optical access system for optical modem using high speed synchronization data exchange standard as claimed in claim 1 is characterized in that, the centralized frame of described local side comprises power supply (8) and webmaster dish, also is provided with some interfaces and indicator light (7).
3. a kind of optical access system for optical modem using high speed synchronization data exchange standard as claimed in claim 1 is characterized in that, described far-end stand alone type machine box comprises power supply (8), also is provided with some interfaces and indicator light (7).
4. a kind of optical access system for optical modem using high speed synchronization data exchange standard as claimed in claim 1 is characterized in that,
Described E1 optical modem also comprises the V35 interface circuit (105) that circuit connects described photoelectric switching circuit (103) and CPLD (104), and this interface circuit (105) connects the V35 interface in centralized frame of described local side and the far-end stand alone type machine box.
5. a kind of optical access system for optical modem using high speed synchronization data exchange standard as claimed in claim 1 is characterized in that,
Described V35 optical modem also comprises the optical interface circuit (106) that circuit connects described CPLD (104), and this optical interface circuit (106) connects the optical interface in centralized frame of described local side and the far-end stand alone type machine box.
6. a kind of optical access system for optical modem using high speed synchronization data exchange standard as claimed in claim 1 is characterized in that, described photoelectric switching circuit (103) connects the indicator light (7) in centralized frame of described local side and the far-end stand alone type machine box.
7. a kind of optical access system for optical modem using high speed synchronization data exchange standard as claimed in claim 1 is characterized in that, the described control circuit (101) that is provided with comprises corresponding some DIP switches and the plurality of chips that is provided with.
8. a kind of optical access system for optical modem using high speed synchronization data exchange standard as claimed in claim 1, it is characterized in that described photoelectric switching circuit (103) comprises V35 interface module, optical interface module, Microprocessor Interface module and the alarm output module that circuit connects;
Described optical interface module is made of optical transmission module and Optical Receivers.
9. a kind of optical access system for optical modem using high speed synchronization data exchange standard as claimed in claim 1 is characterized in that, described optical interface circuit (106) comprises one and receives data wire, one data wire, and can produce light mouth alarm indication signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100287952A CN101106429B (en) | 2006-07-11 | 2006-07-11 | Optical access system for optical modem using high speed synchronization data exchange standard |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2006100287952A CN101106429B (en) | 2006-07-11 | 2006-07-11 | Optical access system for optical modem using high speed synchronization data exchange standard |
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| CN101106429A true CN101106429A (en) | 2008-01-16 |
| CN101106429B CN101106429B (en) | 2012-05-30 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102441239A (en) * | 2011-09-04 | 2012-05-09 | 中国科学院近代物理研究所 | Digital power supply synchronization system and method applied to cancer treatment for ion accelerator |
| CN110186656A (en) * | 2019-07-02 | 2019-08-30 | 德州可视激光科技有限公司 | Laser-projector coupler splitting ratio real-time detection apparatus |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3300851B2 (en) * | 1999-09-16 | 2002-07-08 | 日本航空電子工業株式会社 | Half-duplex control optical modem |
| CN2676526Y (en) * | 2003-01-20 | 2005-02-02 | 北京安控科技发展有限公司 | Baseband transmission modem circuit |
| CN200973094Y (en) * | 2006-07-11 | 2007-11-07 | 上海科泰信息技术有限公司 | Optical fibre insertion system of high speed synchronous data exchange standard optical modem |
-
2006
- 2006-07-11 CN CN2006100287952A patent/CN101106429B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102441239A (en) * | 2011-09-04 | 2012-05-09 | 中国科学院近代物理研究所 | Digital power supply synchronization system and method applied to cancer treatment for ion accelerator |
| CN110186656A (en) * | 2019-07-02 | 2019-08-30 | 德州可视激光科技有限公司 | Laser-projector coupler splitting ratio real-time detection apparatus |
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| CN101106429B (en) | 2012-05-30 |
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