What is the maximum splitting ratio supported by the MA5680T GPBC board?

Question

Options

• A1:32
• B1:64
• C1:128
• D1:16

• A
  16% (5)
• B
  72% (23)
• C
  9% (3)
• D
  3% (1)

Explanation

Option B (1:64) is correct because the Huawei MA5680T's GPBC (GPON Processing Board C) supports a maximum PON port splitting ratio of 1:64, meaning a single PON port can serve up to 64 ONTs/ONUs through passive optical splitters - this aligns with standard GPON specifications that cap the splitting ratio at 1:64 for this board class. Option A (1:32) is a valid and commonly deployed ratio, but it is not the maximum the GPBC supports, making it an attractive but incorrect distractor. Option C (1:128) exceeds what the GPBC board and standard GPON optics support at this power budget; higher ratios like 1:128 are associated with XGS-PON or certain enhanced platforms, not this board. Option D (1:16) is too conservative and represents a much smaller deployment scenario than the board's actual capability.

Memory tip: Associate GPBC with GPON, and GPON's golden number is 64 - "G for GPON, 64 is the gate." If you see 1:32, remember that's half the max, not the max itself.

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