Brand Name:  Huawei

Model Number:  H612IPMD

Discription:

The IPMD board is an IP service processing board of the master shelf. The H612IPMB board is also called the broadband control board. 

The IPMD board has the following functions:

• Aggregates and processes broadband services.
• Forwards the VoIP services of the PVMD board.
• Transmits IP services upstream through the FE/GE electrical port or the GE optical port.
• When two IPMD boards are configured, 32 broadband service channels and 12 GE service channels are supported.

The basic working principles of the IPMD board are as follows:

The control module controls and manages other modules and performs the active/standby switchover;

The switching and service processing module:

• Provides FE or GE ports.
• Switches services.
• Ensures the quality of service (QoS).
• Schedules queues.
• Controls security.
• Provides the star broadband bus to connect to the service boards of the backplane.
• 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.