CN201191837Y - Optical modem - Google Patents
Optical modem Download PDFInfo
- Publication number
- CN201191837Y CN201191837Y CNU2008200798149U CN200820079814U CN201191837Y CN 201191837 Y CN201191837 Y CN 201191837Y CN U2008200798149 U CNU2008200798149 U CN U2008200798149U CN 200820079814 U CN200820079814 U CN 200820079814U CN 201191837 Y CN201191837 Y CN 201191837Y
- Authority
- CN
- China
- Prior art keywords
- utility
- model
- optical
- optical modem
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Data Exchanges In Wide-Area Networks (AREA)
- Telephonic Communication Services (AREA)
Abstract
The utility model relates to a light modulation demodulator, which comprises a set control circuit, a network management single chip microcomputer, a photoelectric conversion circuit and a complicated programmable logic device (CPLD) which are connected in turn through circuits, wherein the light modulation demodulator of the utility model is a part of a multiservice optical fiber access system and mainly utilizes SDH (synchronous digital hierarchy) and optical cable resources, the coverage of a TDM private wire ( a time division multiplexing system) is extended through optical fiber, and traditional fixed network carriers can continue to provide and enlarge private wire services.
Description
Technical field
The utility model relates to a kind of optical modem, relates 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.
The utility model content
A kind of V35 optical modem that the utility model provides, 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 utility model provides a kind of V35 optical modem, and what comprise that circuit successively connects is provided with control circuit, webmaster single-chip microcomputer, photoelectric switching circuit and CPLD (CPLD);
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;
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;
A kind of V35 optical modem that the utility model provides, 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 a kind of V35 optical modem of providing of the utility model.
Embodiment
Following according to Fig. 1, specify a kind of better embodiment of the present utility model:
A kind of V35 optical modem, what comprise that circuit successively connects is provided with control circuit 101, webmaster single-chip microcomputer 102, photoelectric switching circuit 103 and CPLD (CPLD) 104;
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;
Described 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;
Described photoelectric switching circuit 103 comprises V35 interface module, optical interface module, microprocessor (MP) interface module and the alarm output module that circuit connects;
Described 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;
A kind of V35 optical modem that the utility model provides, 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 (3)
1. an optical modem is characterized in that, what comprise that circuit successively connects is provided with control circuit (101), webmaster single-chip microcomputer (102), photoelectric switching circuit (103) and CPLD (104).
2. optical modem 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.
3. optical modem as claimed in claim 1 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200798149U CN201191837Y (en) | 2008-04-08 | 2008-04-08 | Optical modem |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200798149U CN201191837Y (en) | 2008-04-08 | 2008-04-08 | Optical modem |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201191837Y true CN201191837Y (en) | 2009-02-04 |
Family
ID=40335996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200798149U Expired - Fee Related CN201191837Y (en) | 2008-04-08 | 2008-04-08 | Optical modem |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201191837Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2008
- 2008-04-08 CN CNU2008200798149U patent/CN201191837Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101106426B (en) | Optical fiber access system for multi-service optical fiber transceiver | |
| CN101425943B (en) | Method for uplink QoS guarantee in G bit passive optical network system | |
| CN201994942U (en) | Multi-service access and transmission device | |
| CN207588877U (en) | Electric power data transmission device | |
| CN201191837Y (en) | Optical modem | |
| CN200973094Y (en) | Optical fibre insertion system of high speed synchronous data exchange standard optical modem | |
| CN101106429B (en) | Optical access system for optical modem using high speed synchronization data exchange standard | |
| CN2938584Y (en) | Optical fibre access system of ethernet light modem | |
| CN101106425B (en) | Optical fiber access system for Ethernet optical model | |
| CN2938585Y (en) | Optical fibre access system of multi-service optical fibre transceiver | |
| CN201191851Y (en) | Optical fiber access system for optical modem | |
| CN101355601B (en) | Network official telephone for digital microwave system and implementing method thereof | |
| CN2938589Y (en) | Optical fibre access system of light modem for data transmission of Europe standard | |
| CN101106431B (en) | Optical access system for optical modem applicable to European data transfer data | |
| CN101106430B (en) | Optical access system of protocol converter | |
| CN2938586Y (en) | Single network bridge optical fibre access system for Europe standard data transmission | |
| CN2938587Y (en) | Optical network bridge optical fiber access system for data transmission of Europe standard | |
| CN2938588Y (en) | Optical fibre access system of protocol conversion | |
| CN101106427B (en) | Single network bridge optical fiber access system for European data transfer standard | |
| CN101106428B (en) | Optical network bridge optical fiber access system for European data transfer standard | |
| CN201690466U (en) | Framework of multi-service access platform (MSAP) | |
| CN101340255B (en) | Apparatus and method for realizing connection protection of low order channel sub-network | |
| CN200983591Y (en) | Optical access system of multi-service optical end | |
| CN201191852Y (en) | Optical fiber access system of multi-service optical fiber transceivers | |
| CN101156353B (en) | Broad and narrow band integrated plate of integral access equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090204 Termination date: 20100408 |