32Gbps OLT Optical Line Terminal For EPON With 8 PON 8 GE Combo And Dual Power

The Working Way Of DBA Of OLT

Internal DBA module in OLT collect DBA reporting information,do relevant calculation, then the calculation results will be sent to each OUN in the form of BWMap. Each ONU sends uplink burst data in their respective time slots according to the BWMap information and occupies the uplink bandwidth.

There are two ways: SR(Status Reporting )-DBA and NSR (Non Status Reporting)-DBA.

SR(Status Reporting )-DBA: OLT send BW Map in the head of the downlink data frame according to the results of the last calculation. ONU sends status report for the waiting data in the current TCONT according to the bandwidth allocation information. OLT will send next data frame after received ONU status report, DBA calculate and update BWMap. ONU will send data on specified time slot after receiving BWMap message from OLT.

Procedure of NSR (Non Status Reporting)-DBA :

Step1: Monitoring the number of cells received by OLT in a defined interval.

Step2: Use real time monitoring results in Step1 to calculate the use of utilization rate.

Step3: By comparing the use of speed and limit values to recognize congestion level.

But the working way of EPON DBA and GPON DBA is not the same. They are different in calculation period ( EPON 2ms to 8ms and GPON 10ms ) , data length ( EPON 256kbps and GPON 64kbps), data format ( EPON defined by manufacturer and GPON has fix format ) and so on.

Product Features

Carrier-class stability and network resiliency

Adopt large-scale NGB operation system with intellectual property rights in the global carrier network

Support PON fiber redundancy protection and device redundancy protection protocol

Support rich security features to protect the users, devices and network.

Dual power supply input and power redundancy

All PON and GE ports provide L2/L3 full-line speed without losing packets

Full PON service

Each PON support 1:64 splitting ratio ( The maximum quantity of 64 ONU)

Hot plug PON fibber module design, the farthest 20Km transmission distance

Support 128 bits triple churning function to ensure the confidential for the data transmission

Support dynamic bandwidth distribution DBA algorithm

Powerful OAM

Use packet forwarding based on hardware to be effective for feature detection and packet filtering

Support auto protection and user blocking for ARP attack based on MAC address

Support all kinds of protecting DDoS, CPU over-current and VRRP etc

Support BFD, FlexLink, auto linkage aggregation and Ethernet Ring protection

Product Specification Of FA-EOLT8608-D

Fiberall Technology (Shenzhen) Co., Ltd was started in 2007 and we are located in Shenzhen China. As a company engaged in fiber optical engineering related products, our main business including: research and development (R&D), manufacturing, marketing; optical engineering solution design; maintenance, consulting service and accessories outsourcing.

Our main products are: All kinds of Fiber PLC Splitters, FBT Couplers, Fiber Cable Assemblies, Patch Cords, Fiber Pigtails, Fiber Adapters, Patch Panels, Fiber Optical Transceivers, OLT (Optical Line Terminal), ONU (Optical Network Unit), FTTx, Equipments & Accessories for Fiber Test, Installation, Maintenance & Repair.

With eight years’ experience in fiber optic, Fiberall established a relatively perfect products and service system, with rich industry experience, comprehensive technology and high-quality team, we are able to provide our customers with OEM & ODM service, project implementation, maintenance, and after-sale service and we have ability to meet different requirement from different customers like distributors, operators, contractors and users etc.

Adhering to the core values of “Honesty, Responsibility, Efficiency, Flexibility, Communication, Mutual Benefit”, and with trust from all old & new customers, support from all partners and effort of our whole team, Fiberall gradually formed a business model of "service to project, based on the market, integrate design, production, marketing and service together", we are committed to providing a full range, high technology, low cost, and ultra expected solution to our customers.