کارت VDSLمدل VDEB

توضیحات

برد VDEB یک برد سرویس 32 کاناله VDSL2 با اسپلیتر داخلی است. این کارت 32 کانال VDSL را از طریق POTS ارائه می دهد و از Line Protection پشتیبانی می کند.

برد VDEB را می توان در شیارهای 0-6 و 9-15 شلف سرویس MA5600 یا در شیارهای 1-6 MA5603 نصب کرد.

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.