CN201898588U - OLT (optical line terminal) local side equipment for network 8U rack - Google Patents
OLT (optical line terminal) local side equipment for network 8U rack Download PDFInfo
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Abstract
The utility model relates to OLT (optical line terminal) local side equipment for a network 8U rack, comprising eight OLT plug-in boards, one network pipe plug-in board and one back board, wherein each OLT plug-in board comprises an OLT main chip, a PON (passive optical network) port optical module, an upper linkage port module, a management port chip, a FLASH memory, a random access memory and a data exchange buffer memory; the network pipe plug-in board comprises a network management main chip, a physical layer interface chip, a multi-port switchboard chip, a FLASH memory and a random access memory.
Description
Technical field
The utility model relates to Ethernet passive optical network transmission EPON equipment, mainly is meant a kind of network 8U frame OLT local side apparatus.
Background technology
EPON (Ethernet Passive Optical Network) is up-to-date a kind of in the PON technology, is proposed by IEEE802.3EFM (Ethernet for the First Mile).EPON adopts point-to-multipoint network structure, passive fiber transmission means, also is a kind of broadband access technology that multiple integrated service can be provided.
EPON is the broadband access technology of a kind of Ethernet of combining and PON.As everyone knows, Ethernet is simple and easy to usefulness, and is easy for installation, and extensively still also there are some problems in utilization always, and transmission range is short, has only 100 meters, the working method of sharing, and particularly these problems are more obvious when extensive the use.
Summary of the invention
The purpose of this utility model provides a kind of network 8U frame OLT local side apparatus, can satisfy the long and extensive use of Ethernet passive optical network transmission system transmission range and wait requirement.
The realization the technical solution of the utility model is: this network 8U frame OLT local side apparatus comprises 8 blocks of OLT plug-in card plates, 1 block of webmaster plug-in card plate, 1 backboard, panel; Wherein:
Described OLT plug-in card plate comprises OLT master chip, PON mouth optical module, upper united mouth module, management mouthful chip, FLASH memory, random asccess memory, exchanges data buffer storage, and wherein the OLT master chip connects PON mouth optical module, upper united mouth module, management mouthful chip, FLASH memory, random asccess memory, exchanges data buffer storage respectively;
Described webmaster plug-in card plate comprises webmaster master chip, physical layer interface chip, multi port switch chip, FLASH memory, random asccess memory, wherein the webmaster master chip connects random asccess memory, FLASH memory respectively, with connect the multi port switch chip through the physical layer interface chip, the multi port switch chip also connect respectively the PON plug-in card and the management mouthful.
This technical scheme also comprises:
Described every block of OLT plug-in card plate comprises 4 PON mouths and 4 upper united mouths.
Described panel comprises 1 10/100M Ethernet interface chip of managing all PON plug-in cards.
Described OLT master chip comprises the CS8021 chip.
A described management mouthful chip comprises the ARM9 chip.
The beneficial effect that the utlity model has: this OLT equipment is the miniaturization EPON equipment of a new generation, it is a kind of carrier class FTTH broadband access equipment that provides for telecom operators, than common EPON product, it provides higher access bandwidth, can insert more terminal use, effectively reducing the operation cost of investment, is desirable last kilometer FTTH solution of operator.It has integrated level height, applying flexible, high reliability and provides that service quality (QoS) guarantees, can manage, the characteristics of dilatation and networking flexibly.
Description of drawings
Fig. 1 is the utility model back board structure schematic diagram, and first on the left side is management plug-in card plate, and all the other are PON plug-in card plate.
Fig. 2 is the PON plug-in card plate theory diagram of Fig. 1.
Fig. 3 is the management plug-in card plate theory diagram of Fig. 1.
Fig. 4-Figure 13 is the circuit theory diagrams of Fig. 2, and wherein Fig. 4 comprises: Fig. 4 A1, Fig. 4 A2, Fig. 4 B; Fig. 5 comprises: Fig. 5 A, Fig. 5 B, Fig. 5 C1, Fig. 5 C2, Fig. 5 D; Fig. 6 comprises: Fig. 6 A, Fig. 6 B; Fig. 7 comprises: Fig. 7 A, Fig. 7 B, Fig. 7 C; Fig. 8 comprises: Fig. 8 A, Fig. 8 B, Fig. 8 C, Fig. 8 D; Fig. 9 comprises: Fig. 9 A, Fig. 9 B, Fig. 9 C, Fig. 9 D; Figure 10 comprises: Figure 10 A 1, Figure 10 A2, Figure 10 B 1, Figure 10 B2; Figure 11 comprises: Figure 11 A, Figure 11 B, Figure 11 C, Figure 11 D; Figure 12 comprises: Figure 12 A, Figure 12 B, Figure 12 C; Figure 13 comprises: Figure 13 A, Figure 13 B, Figure 13 C, Figure 13 D.
Figure 14-Figure 25 is the circuit theory diagrams of Fig. 3, and wherein Figure 15 comprises: Figure 15 A, Figure 15 B; Figure 18 comprises: Figure 18 A, Figure 18 B.
Among the figure: 1 upper united mouth module, 2 random asccess memory, 3 management mouthful chips, 4 exchanges data buffer storage, 5FLASH memory, 6OLT master chip, 7PON mouth optical module, 8 webmaster master chips, 9 physical layer interface chips, 10 multi port switch chips.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in the figure, this OLT local side apparatus is mainly by 8 blocks of OLT plug-in card plates, 1 block of webmaster plug-in card plate, 1 backboard.Wherein:
OLT plug-in card plate is made up of OLT master chip 6, PON mouth optical module 7, upper united mouth module 1, management mouthful chip 3, FLASH memory 5, random asccess memory 2, exchanges data buffer storage 4.
Webmaster plug-in card plate mainly is made up of webmaster master chip 8, physical layer interface chip 9, multi port switch chip 10, FLASH memory 5, random asccess memory 2.
Operation principle:
This equipment is a 8U frame OLT local side apparatus, and by 8 blocks of OLT plug-in card plates, 1 webmaster plug-in card is formed, 1 backboard, and every OLT plug-in card comprises 4 PON mouths and 4 upper united mouths.Management board is made of exchanger chip+one a WEB server, and panel comprises 1 10/100M Ethernet interface, can manage all PON plug-in cards by this port.The management mouth of every PON plug-in card converges on the management board by backboard.
Ethernet passive optical-fiber network (EPON) is the single fiber bi-directional Optical Access Network that multiple spot (P2MP) structure is put in a kind of employing, and its canonical topology structure is the tree type.The EPON system is made up of the optical line terminal (OLT) of office's side, the optical network unit (ONU) and the Optical Distribution Network (ODN) of user side.OLT is positioned at the local side of Access Network, for optical access network provides interface between network side and the service node, and communicates by letter with the ONU of user side by one or more ODN.OLT separates the exchange and the non-reciprocal exchange of business, and management is from signaling and the monitoring business of ONU, for ONU safeguards and the assignment function with itself providing.ODN is a passive optical distribution network that connects OLT and ONU, and function is the distribution downlink data and concentrates upstream data.The passive light distribution network that ODN is made up of optical cable, Passive Optical Components (light branch/mixer, optical connector etc.) generally becomes tree type branched structure.
Adopt broadcast mode at down direction (OLT is to ONU), the signal that OLT sends arrives each ONU by ODN, and by strobe utility, ONU only receives one's own Frame.For fear of data collision and improve network utilisation efficient, adopt the TDMA access mode and the data of each ONU are sent at up direction (ONU is to OLT) and arbitrate, the signal that ONU sends only can arrive OLT, and can not arrive other ONU.ODN provides one or more optical channel between an OLT and one or more ONU, each optical channel is limited in the specific wavelength window.The data of uplink and downlink all adopt IEEE802 Ethernet data frames form.
E8220T overall work situation:
E8220T has 32 PON mouths, and each PON mouth can provide the symmetrical rate of 1000M.Shunt ratio according to 1: 32 can connect 1024 ONU, descending use 1490nm wavelength transmission, up use 1310nm transmission.
XDK-E8220T is local side (incoming end) equipment of GEPON system, and it can be connected with 32 ONU of far-end by splitter (ODN), finishes the transmission of user data.It is connected with the PON mouth of the ONU of lower end by splitter with PON mouth (light mouth OLT Optical burst Transceiver), with message transmission and the exchange of finishing OLT and ONU, with the electricity mouthful (RJ45 mouth) of 10/100/1000M or the light mouth (SFP or GBIC Module) and local side (incoming end) devices communicating of 1000M, finish the information exchange of OLT and upper layer device.The effect of OLT is the interface between network side and the local switch is provided and communicates by letter with the ONU of user side through one or more ODN for optical access network, and the pass of OLT and ONU is the master-slave communication relation.OLT can separate the exchange and the non-reciprocal exchange of business, and management is from signaling and the monitor message of ONU, for ONU safeguards and functions of physical supply with itself providing.OLT can be set directly at the local switch interface, also can be arranged on far-end, with remote concentrator or multiplexer interface.OLT can be autonomous device physically, also can be integrated in the equipment with other functions.OLT provides data, video and the telephone network of local side (incoming end) and the interface between PON.Its concrete operation principle is with reference to IEEE802.3ah.
The effect of each funtion part:
The master chip of CS8021:OLT is IEEE 802.3ah Ethernet PON (EPON) the M controller that is applicable to optical line terminal (OLT).CS8021 is incorporated into passive point-to-multipoint (PON) fiber optic network with EPON MAC for WAN connection, and 802.3z gigabit Ethernet MAC is arranged as the central office network interface.CS8021 provides service strategy, fail safe and authentication management to satisfy the application requirements of operator.
PON mouth: be a GEPON optical module that is applicable to OLT end gigabit, be responsible for the transmitting-receiving of light signal and the conversion between the photoelectricity.
CS8021 provides 4 gigabit optical interfaces altogether.The built-in serdes of CS8021 is connected with PON mouth module by 2 pairs of differential lines.
Upper united mouth: provide 4 to go up connecting port (photoelectricity is optional).
On equipment, be used for connecting local side (incoming end) equipment.Receive the ethernet signal of first line of a couplet equipment, give the CS8021 chip after the processing.And give the ONU of far-end through the PON of OLT oral instructions.The built-in serdes of CS8021 is connected with the upper united mouth module by 2 pairs of differential lines.
The physical layer interface chip of FE PHY:10/100M, the electricity mouth is mainly used to the system that manages this equipment and connected on equipment.The administrative staff of supply equipment use.CS8021 is connected by MII with master chip.
FLASH: the systems soft ware of memory, storage OLT starts and operate as normal OLT.
The storage chip at random of SDRAM:OLT system works (being the internal memory of system).
SRAM: exchanges data buffer storage.
This network management system can realize WEB management, and whole PON system is controlled and manages.The management mouth of the PON plug-in card of polylith OLT converges on exchanger chip by the management mouth, and exchanger chip is connected with CS3512 by gigabit PHY, thereby realizes the webmaster to polylith PON card.
CS3512: the master chip of network management system is 1 high performance single-chip gigabit ethernet network processor.Adopt the ARM9 chip.
SDRAM: the storage chip at random of system works (being the internal memory of system).
FLASH: storage WEB management system software starts and operate as normal webmaster.
IP1001: gigabit PHY, the physical layer interface chip of 10/100/1000M, electricity mouth.The network management interface of chip connects exchanger chip with this interface, realizes the webmaster to polylith PON card thus.
Switch: be 1 multi port switch chip, the port of switch connects the PON plug-in card by backboard.1 network management interface of switch output is for user management EPON system.Gigabit PHYIP1001 connects a port of switch, and webmaster is linked in the PON system.
The PON plug-in card: being one has 4 PON mouths, the integrated circuit board of 4 gigabit upper united mouths.
The device port attribute:
1,32 PON mouths;
2,32 gigabit upper united mouths;
3,1 10/100M webmaster mouth.
Claims (5)
1. network 8U frame OLT local side apparatus, comprise 8 blocks of OLT plug-in card plates, 1 block of webmaster plug-in card plate, 1 backboard, panel, it is characterized in that described OLT plug-in card plate comprises OLT master chip, PON mouth optical module, upper united mouth module, management mouthful chip, FLASH memory, random asccess memory, exchanges data buffer storage, wherein the OLT master chip connects PON mouth optical module, upper united mouth module, management mouthful chip, FLASH memory, random asccess memory, exchanges data buffer storage respectively;
Described webmaster plug-in card plate comprises webmaster master chip, physical layer interface chip, multi port switch chip, FLASH memory, random asccess memory, wherein the webmaster master chip connects random asccess memory, FLASH memory respectively, with connect the multi port switch chip through the physical layer interface chip, the multi port switch chip also connect respectively the PON plug-in card and the management mouthful.
2. network 8U frame OLT local side apparatus as claimed in claim 1 is characterized in that described every block of OLT plug-in card plate comprises 4 PON mouths and 4 upper united mouths.
3. network 8U frame OLT local side apparatus as claimed in claim 1 is characterized in that described panel comprises 1 10/100M Ethernet interface chip of managing all PON plug-in cards.
4. network 8U frame OLT local side apparatus as claimed in claim 1 is characterized in that described OLT master chip comprises the CS8021 chip.
5. network 8U frame OLT local side apparatus as claimed in claim 1 is characterized in that a described management mouthful chip comprises the ARM9 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010292160620U CN201898588U (en) | 2010-02-02 | 2010-02-02 | OLT (optical line terminal) local side equipment for network 8U rack |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010292160620U CN201898588U (en) | 2010-02-02 | 2010-02-02 | OLT (optical line terminal) local side equipment for network 8U rack |
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| CN201898588U true CN201898588U (en) | 2011-07-13 |
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| CN2010292160620U Expired - Fee Related CN201898588U (en) | 2010-02-02 | 2010-02-02 | OLT (optical line terminal) local side equipment for network 8U rack |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104854807A (en) * | 2012-11-12 | 2015-08-19 | 马维尔国际贸易有限公司 | Passive optical network switch |
| CN111831594A (en) * | 2016-12-26 | 2020-10-27 | 英特尔公司 | Dual mode PHY for low latency in high speed interconnects |
-
2010
- 2010-02-02 CN CN2010292160620U patent/CN201898588U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104854807A (en) * | 2012-11-12 | 2015-08-19 | 马维尔国际贸易有限公司 | Passive optical network switch |
| CN111831594A (en) * | 2016-12-26 | 2020-10-27 | 英特尔公司 | Dual mode PHY for low latency in high speed interconnects |
| CN111831594B (en) * | 2016-12-26 | 2024-07-26 | 英特尔公司 | Dual mode PHY for low latency in high speed interconnect |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: XUNDAKANG COMMUNICATION EQUIPMENT (HUIZHOU) CO., L Free format text: FORMER OWNER: SHENZHEN XUNDAKANG COMMUNICATION EQUIPMENT CO., LTD. Effective date: 20110803 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 518000 SHENZHEN, GUANGDONG PROVINCE TO: 516025 HUIZHOU, GUANGDONG PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20110803 Address after: 516025. S-12-6, South District, Huizhou Digital Industrial Park, Hui Ao Avenue, Guangdong, Huizhou Patentee after: XDK Communication Equipment (Huizhou) Co.,Ltd. Address before: The 518000 floor of Guangdong province Bantian Longgang District of Shenzhen City, the first industrial zone water pit Nishimura XDK communication building Patentee before: Shenzhen Xundakang Communication Equipment Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110713 Termination date: 20180202 |
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| CF01 | Termination of patent right due to non-payment of annual fee |