Overview of H83D05ADPE01

The H83D05ADPE01 board supports the following functions:

• 64-port ADSL2+ over POTS service
• Built-in 64-channel splitter, with the port impedance of 600 ohms
• Port protection
• 2-pair bonding
• SELT and DELT tests
• G.992.1 Annex A, G.992.3 Annex A/L/M (EU32-EU64), and G.992.5 Annex A/M (EU32-EU64)
• G.INP re-transmission at the physical layer (V800R009C00 and later versions)
• Automatic power shutdown in case of a high temperature

The basic working principle of the H80BADPE board is as follows:

• The control module loads the board software, controls the running of the board, and manages the entire board.
• The splitter module separates POTS signals from ADSL2+ signals over the subscriber line.
• The interface module supports two functions:The forwarding module processes services. The detailed process is described later.The power module supplies power to each functional module of the board.
  • In the upstream direction, the interface module converts line signals into a cell flow, aggregates the flow to the forwarding module, and then reorganizes the flow into ATM packets.
  • In the downstream direction, the forwarding module transmits the ATM cell flow to the interface module. Then, the interface module converts the flow into downstream line signals.
• The clock module provides clock signals for each functional module of the board.

The service process is as follows:

• In the upstream direction, the splitter module separates POTS signals from ADSL2+ signals over the subscriber cable, and then the interface module transmits such signals to the forwarding module. The forwarding module reorganizes the cell flow into ATM packets, encapsulates the ATM packets into IP packets, and then performs CAR on the IP packets. Controlled by the logical switch, the IP packets are transmitted to the backplane bus through the backplane interface.
• In the downstream direction, the forwarding module decapsulates the IP packets from the backplane bus, performs CAR on the IP packets, reorganizes the IP packets into ATM packets, and then transmits the ATM packets to the interface module. The interface module converts the IP packets into analog signals and transmits the signals to the subscriber line through the splitter module.