Upstream Interface Boards Comparison
The device supports GE and 10GE upstream interface boards.
In the table, "Yes" indicates "supported" and "No" indicates "not supported".
Table 1 Specifications lists of upstream interface boards
| Board | Upstream Transmission (*) | Cascading (*) | Intra-board aggregation and Inter-board aggregation | Clock Feature | Port | Pluggable Optical Module | Pluggable Electrical Module |
| H801GICF | Yes | Yes | Yes | No | Two GE ports | SFP | SFP |
Note: You can run the network-role command in the GIU mode to switch the role of a port. Default role is uplink.
Parameters:
Power Consumption and Maximum Frame Size of Boards
You can query power consumption, maximum frame size, and normal operating temperature of all boards.
lists the power consumption and maximum frame size of boards. "-" indicates N/A.
The operating temperature of all the boards is -40°C to +65°C. The lowest board startup temperature is -25°C.
NOTE:
The power consumption of the board is tested in the following conditions:
Working voltage: -53.5 V DC.
Ambient temperature: 25 °C.
Static power consumption: All ports do not carry any loads. Specifically, users under POTS ports hang up phones, xDSL ports are deactivated, and optical modules are not installed on optical ports
Maximum power consumption: All ports fully carry loads. However, only 25% users under POTS ports concurrently pick up phones and the feeding current is 20 mA.
The board power consumption slightly varies with the power module configured for the board and discreteness of components.
Table 1 Power consumption and maximum frame size of boards
| Board | Power Consumption | Maximum Frame Size |
| Upstream interface board (GIU) |
| H801GICF | Static: 3.9 W Maximum: 3.9 W | 2052 bytes. After the jumbo frame function is enabled, a maximum of 9216 bytes can be supported. |
The basic working principle of the H801GICF board is as follows:
The control module loads the board software, controls the running of the software, and manages the entire board.
The conversion module supports transparent transmission of the data.
The power module supplies power to other functional modules of the board.
