What is the difference of main control boards on Huawei OLT MA5683T and MA5680T?

Brief introduction:

SCUN and SCUH are main control card of Huawei MA5680T, MA5683T; They are the core of the system control and service switching and aggregation.

Then what is the difference between SCUN and SCUH?

SCUN Overview:

• Supports integrated optical copper access for GPON, P2P, xDSL, and voice services.
• Supports 480 Gbit/s (active/standby mode), 960 Gbit/s (load sharing mode) switching capacity.
• Supports active/standby mode and load sharing mode, doubling processing performance.
• Supports ISSU, saving the upgrade interruption time.
• Supports 1588v2, and 1588 ACR by working together with the H801CKMD daughter board.
• Supports interfaces CON (RJ-45), ETH (RJ-45), ESC (RJ-45).
• Supports Communication Interfaces TX0 RX0 to TX3 RX3 (4 x SFP GE ports).

SCUH Overview:

• Supports up to 1920 Gbit/s switching capacity
• Supports active/standby mode and load sharing mode, doubling processing performance
• Supports ISSU, saving the upgrade interruption time
• Supports synchronization Ethernet

Below is the comparison of their parameters:

The most popular Huawei OLT as below:

MA5683T Platinum Line

MA5683T Gold Line

Huawei MA5680T

Huawei MA5608T