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Huawei H805VDMF 24-Port VDSL2 over POTS Service Board

The H805VDMF is a 48-port VDSL2 over POTS service board.It works with the VDSL transceiver unit-remote end (VTU-R) through the VDSL port to support the VDSL2 service.

Working principle of the H805VDMF board:

The basic working principle of the H805VDMF board is as follows:
* The control module loads the board software, controls the running of the board, and manages the entire board.
l* The protection module protects and isolates the board from lightning strikes.The DC block isolates the direct current. The protector protects the high voltage.
* The forwarding module converts between the ATM/PTM service and the IP service, and also supports flow control and scheduling.
* The interface module provides the ports for information exchange.
* The power module supplies power to each functional module of the board.

* The clock module provides clock signals for each functional module of the board.

The service process is as follows:
* In the upstream direction, the interface module converts the VDSL2 signals into a cell flow, aggregates the flow to the forwarding module, and then reorganizes the cell flow into ATM/PTM packets.The forwarding module encapsulates the reorganized ATM/PTM packets and performs CAR on the ATM/PTM packets to convert them into IP packets. The IP packets are transmitted to the backplane bus through the backplane port and then to the control board. After being processed by the control board, the IP packets are transmitted upstream to the upper level device through the optical or electrical port.

In the downstream direction, the forwarding logic decapsulates the IP packets from the backplane bus, performs CAR on the IP packets, reorganizes the IP packets into ATM/PTM packets, and transmits the ATM/PTM packets to the interface module. The interface module converts the ATM/PTM packets into analog signals and then transmits the signals to subscriber lines.

Indicator of H805VDMF/H80BVDMF:
Pin assignments of the xDSL0 port:
Hong Telecom Equipment Service Limited (HongTelecom) is a leading professional equipment distributor and service provider in telecommunication infrastructure and solution field, can provide 48-port H805VDMF/H80VDMF VDSL2 over POTS Service boards with the shortest lead time and higher quanlity.

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