CN209731492U - A kind of broadband network access system - Google Patents
A kind of broadband network access system Download PDFInfo
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- CN209731492U CN209731492U CN201920502471.0U CN201920502471U CN209731492U CN 209731492 U CN209731492 U CN 209731492U CN 201920502471 U CN201920502471 U CN 201920502471U CN 209731492 U CN209731492 U CN 209731492U
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- olt
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- light
- access system
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Abstract
The utility model discloses a kind of broadband network access system, including OLT, ODN, ONU and user equipment, the OLT connection fiber optic backbone is simultaneously connected by the ODN connection ONU, the ONU with the user equipment；The ODN includes optical cross box, level-one light splitting case and secondary light-splitting case；The utility model controls management ONU terminal device by OLT, realize network management, the light splitting of residence network construction machines is built, using point-to-multipoint framework, optical signal is divided into multichannel, multiple access points are covered with optical branch, realize the high efficiency of network insertion, complexity is reduced, the problem that optical fiber wiring cost is high, wiring is complicated.
Description
Technical field
The utility model relates to broadband access technology field more particularly to a kind of broadband network access systems.
Background technique
Currently, the Network Provider of all parts of the world is to meet arriving for IP epoch due to the fast development of Internet business
Come, sets about carrying out the network capacity extension with all strength；In traditional all optical network access system, the operator of various regions proposes many not
Same transmission mode, the main fiber to the home formed using optical fiber, optical fiber to office, Fiber To The Building, but far due to distance, at
This height, complicated optical fiber are routed also increasingly by various limitations.
Utility model content
A kind of in order to overcome the deficiencies of the prior art, the utility model provides broadband network access system, purpose exist
Solve the problems, such as that optical fiber wiring cost is high, wiring is complicated in the utility model.
The utility model adopts the following technical solution realizes:
A kind of broadband network access system, including OLT, ODN, ONU and user equipment, the OLT connection fiber optic backbone is simultaneously
It is connected by the ODN connection ONU, the ONU with the user equipment；The ODN includes optical cross box, level-one light splitting case
With secondary light-splitting case, the optical cross box is connected with the OLT, and the optical cross box is connected with level-one light splitting case, the level-one
Light splitting case is connected with the secondary light-splitting case, and the secondary light-splitting case is connected with the ONU.
Further, OLT first line of a couplet multiple interfaces can receive a variety of unlike signals of multi-operator, OLT second line of a couplet PON interface；
ONU first line of a couplet PON interface, second line of a couplet multiple interfaces corresponding with OLT.
Further, connecting port includes GE, E1 and CATV interface on the OLT；The ONU second line of a couplet interface include FE,
POTS and COAX interface.
Further, connect backbone optical cable in the optical cross box, under connect multiple optical distribution cables；The level-one light splitting case passes through more
A optical distribution cable is connected with the secondary light-splitting case, and the secondary light-splitting case is connected by optical distribution cable with the ONU.
Further, the fiber optic backbone bandwidth is gigabit bandwidth.
Further, the business of the user equipment includes voice, broadband and Web TV.
Compared with prior art, the utility model has the beneficial effects that:
The utility model controls management ONU terminal device by OLT, realizes network management, point of residence network construction machines
Light construction, using point-to-multipoint framework, is divided into multichannel for optical signal, covers multiple access points with optical branch, realizes network insertion
High efficiency, reduce complexity, the problem that optical fiber wiring cost is high, wiring is complicated.
Detailed description of the invention
Fig. 1 is a kind of construction structure figure of broadband network access system provided by the utility model；
Fig. 2 is a kind of secondary light-splitting schematic diagram of broadband network access system provided by the utility model.
Specific embodiment
In the following, being described further in conjunction with attached drawing and specific embodiment to the utility model, it should be noted that
Under the premise of not colliding, it can be formed in any combination between various embodiments described below or between each technical characteristic new
Embodiment.
Please refer to Fig. 1 and Fig. 2, a kind of broadband network access system, including OLT (optical line terminal, light
Line terminal), ODN (Optical Distribution Network, Optical Distribution Network), ONU (Optical Network
Unit, optical network unit) and user equipment, the OLT connection fiber optic backbone simultaneously passes through the ODN connection ONU, described
ONU is connected with the user equipment；The ODN includes optical cross box, level-one light splitting case and secondary light-splitting case, the optical cross box and institute
OLT connection is stated, the optical cross box is connected with level-one light splitting case, and the level-one light splitting case is connected with the secondary light-splitting case,
The secondary light-splitting case is connected with the ONU.
The utility model uses EPON (Ethernet Passive Optical Network, Ethernet passive optical network)
Broadband Network Access technology.It is a kind of Ethernet access technique of the long range of supplier's transmission net based on optical fiber.EPON is adopted
With point-to-multipoint framework, a bearing optical fiber uplink and downlink data-signal, by the supplier of 1:N optical splitter optical splitter by optical signal
It is divided into the road N, multiple access points or accessing user are covered with optical branch.
Further, OLT centre computer room, in down direction, OLT provides the light towards passive optical-fiber network (ODN)
Fine interface；In up direction, OLT will provide GE optical electrical interface, in order to provide multi service access, OLT can also support E1 and
The interfaces such as OC3, the access or circuit relay business of Lai Shixian traditional voice.
Further, ODN is light distribution net, is made of passive fiber splitter and optical fiber.Passive fiber splitter is to connect
The inactive component of OLT and ONU are connect, its function is distribution downlink data and concentration upstream data.The deployment phase of passive optical splitters
When flexible, due to being passive device, it is almost adapted to all environment.The splitting ratio of general passive fiber splitter have 1:2,
1:4,1:8,1:16,1:32,1:64 etc..The utility model level-one is divided the splitting ratio that case uses 1:4, and secondary light-splitting is small to use 1:
8 splitting ratio.
Further, ONU is placed on the terminal device of user resident side, and the ONU in EPON uses Ethernet protocol, realizes
Low-cost Ethernet second layer function of exchange.Due to using Ethernet protocol, it is no longer needed for during communication
Transparent transmission of the ONU to user data is realized in protocol conversion.Guarantee the peace of user data between OLT to ONU using cryptographic protocol
Quan Xing.
Preferably, the utility model is connected using FTTH (Fiber To The Home, fiber to the home) plus FUB networking,
OLT receives the signal of a variety of operators, provides multi service access, is believed light by the optical cross box and light splitting case of ODN transmission network
Number it is divided into multichannel, is transferred to ONU, ONU establishes transmission channel with user equipment again, realizes fiber to the home, provides multiple business and connect
Enter.
The advantage for being preferably based on the FTTH of EPON is its powerful covering power, farthest covering up to 20 kilometers (1:
32 branch ratio), from end office (EO), by each soft exchange point of ODN connection.FTTH technology based on EPON, it is direct to provide optical fiber
To user's tip scheme, become efficient access way.
Preferably, FUB points are tetra- kinds of models of FDZ, FVB, FUB, XB, by rubber composite material, steel flanges, sleeve, guarantor
Warm heat-barrier material composition, function are dampings, noise reduction, sealing, media-resistant, are convenient for displacement and installation, are in field of environment protection
A kind of highly desirable damping, noise reduction, smoke abatement and dust control best auxiliary equipment.
Further, OLT first line of a couplet multiple interfaces can receive a variety of unlike signals of multi-operator, OLT second line of a couplet PON interface；
ONU first line of a couplet PON interface, second line of a couplet multiple interfaces corresponding with OLT.
Further, the upper connecting port of OLT includes GE, E1 and CATV interface, respectively corresponds TV, phone and broadband signal；
ONU second line of a couplet interface includes FE, POTS and COAX interface, respectively corresponds TV, phone and broadband signal.
Further, connect backbone optical cable in optical cross box, under connect multiple optical distribution cables；Level-one is divided case and matches linear light by multiple
Cable is connected with secondary light-splitting case, and secondary light-splitting case is connected by optical distribution cable with ONU.
Further, fiber optic backbone bandwidth is gigabit bandwidth.
Further, the business of user equipment includes voice, broadband and Web TV.
Above embodiment is only preferred embodiments of the present invention, cannot be protected with this to limit the utility model
Range, the variation of any unsubstantiality that those skilled in the art is done on the basis of the utility model and replacement belong to
In the utility model range claimed.
Claims (6)
1. a kind of broadband network access system, which is characterized in that including OLT, ODN, ONU and user equipment, the OLT connection light
Fine main line is simultaneously connected by the ODN connection ONU, the ONU with the user equipment；The ODN includes optical cross box, one
Fraction light box and secondary light-splitting case, the optical cross box are connected with the OLT, and the optical cross box is connected with level-one light splitting case,
The level-one light splitting case is connected with the secondary light-splitting case, and the secondary light-splitting case is connected with the ONU.
2. broadband network access system as described in claim 1, which is characterized in that OLT first line of a couplet multiple interfaces can receive more fortune
Seek a variety of unlike signals of quotient, OLT second line of a couplet PON interface；ONU first line of a couplet PON interface, second line of a couplet multiple interfaces corresponding with OLT.
3. broadband network access system as described in claim 1, which is characterized in that on the OLT connecting port include GE, E1 and
CATV interface；The ONU second line of a couplet interface includes FE, POTS and COAX interface.
4. broadband network access system as described in claim 1, which is characterized in that backbone optical cable is connect in the optical cross box, under
Connect multiple optical distribution cables；The level-one light splitting case is connected by multiple optical distribution cables with the secondary light-splitting case, two fraction
Light box is connected by optical distribution cable with the ONU.
5. broadband network access system as described in claim 1, which is characterized in that the fiber optic backbone bandwidth is gigabit band
It is wide.
6. broadband network access system as described in claim 1, which is characterized in that the business of the user equipment includes language
Sound, broadband and Web TV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920502471.0U CN209731492U (en) | 2019-04-12 | 2019-04-12 | A kind of broadband network access system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920502471.0U CN209731492U (en) | 2019-04-12 | 2019-04-12 | A kind of broadband network access system |
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| CN209731492U true CN209731492U (en) | 2019-12-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111147962A (en) * | 2019-12-23 | 2020-05-12 | 中国联合网络通信集团有限公司 | Method and device for configuring broadband network |
| CN112218182A (en) * | 2020-09-28 | 2021-01-12 | 中建三局第三建设工程有限责任公司 | Large-scale venue optical network system and construction method thereof |
-
2019
- 2019-04-12 CN CN201920502471.0U patent/CN209731492U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111147962A (en) * | 2019-12-23 | 2020-05-12 | 中国联合网络通信集团有限公司 | Method and device for configuring broadband network |
| CN112218182A (en) * | 2020-09-28 | 2021-01-12 | 中建三局第三建设工程有限责任公司 | Large-scale venue optical network system and construction method thereof |
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