Huawei MA5600 VDEA VDEB VDBD 32-channel VDSL2 Service Board

The VDEA board is a 32-channel VDSL2 service board with a built-in splitter. It provides 32-channels of VDSL over POTS services and supports line protection.

The VDEA board can be installed in slots 0-6 and 9-15 of the MA5600 service shelf,or in slots 1-6 of the MA5603.

External connections of the VDEA board:

Working principles of the VDEA board：

The basic working principles of the VDEA board are as follows:
* The control module loads the board software, controls the running of the board, and manages the entire board.
* 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 SPL module separates the VDSL2 signals from the POTS signals.

The services are processed as follows:
* In the upstream direction, the interface module converts the VDSL2 line signals into a cell flow, aggregates the flow to the forwarding module, and then reassembles the cell flow into ATM packets. The forwarding module encapsulates the reassembled packets and performs committed access rate (CAR) on the packets. Then, the packets are transmitted to the backplane bus through the backplane port, and then to the control board. After the packets are processed by the control board, they are transmitted to the upper layer device through the optical or electrical port.
* In the downstream direction, the forwarding module re-encapsulates the data from the Ethernet, reassembles the packets into the ATM packets after the CAR processing, and then transmits the packets to the interface module. The interface module converts the packets into analog signals, and then transmits the analog signals to the subscriber line.

Front Panel of the VDEA board：

Ports on the front panel of the VDEA board:

Specifications of the VDEA/B board:
Dimensions (H x W x D): 25.4 mm x 372 mm x 399.5 mm;
Maximum Power Consumption: 87 W (VDEA); 

Huawei MA5600 VDEB VDSL2+ Service Board Over View:
The VDEB board is a 32-channel VDSL2 service board with a built-in splitter. It provides 32
channels of VDSL over POTS services and supports line protection.
The VDEB board can be installed in slots 0-6 and 9-15 of the MA5600 service shelf, or in slots 1-6 of the MA5603

External connections of the VDEB board:

Working principles of the VDEB board:

The basic working principles of the VDEB board are as follows:
* The control module loads the board software, controls the running of the board, and manages the entire board.
* 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 SPL module separates the VDSL2 signals from the POTS signals.
The services are processed as follows:
* In the upstream direction, the interface module converts the VDSL2 line signals into a cell flow, aggregates the flow to the forwarding module, and then reassembles the cell flow into ATM packets. The forwarding module encapsulates the reassembled packets and performs committed access rate (CAR) on the packets. Then, the packets are transmitted to the backplane bus through the backplane port, and then to the control board. After the packets are processed by the control board, they are transmitted to the upper layer device through the optical or electrical port.
* In the downstream direction, the forwarding module re-encapsulates the data from the Ethernet, reassembles the packets into the ATM packets after the CAR processing, and then transmits the packets to the interface module. The interface module converts the packets into analog signals, and then transmits the analog signals to the subscriber line.

Front Panel of the VDEB board:

 Ports on the front panel of the VDEB board:

Specifications of the VDEB board:
Dimensions (H x W x D) :25.4 mm x 372 mm x 399.5 mm;
Maximum Power Consumption: 69W

Hong Telecom Equipment Service Limited (HongTelecom) is a leading professional equipment distributor and service provider in telecommunication infrastructure and solution field, can provide Huawei MA5600 VDEA VDEB 32-channel VDSL2+ Service Boards with the shortest lead time and best quanlity.