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FAQ-How to Calculate the Actual Split Ratio when the xPON Uses the Multi-level Optical Splitting Mode

Publication Date:  2012-07-25 Views:  56 Downloads:  0
Issue Description
Q:
How to calculate the actual split ratio when the xPON uses the multi-level optical splitting mode? 
 
Alarm Information
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Handling Process
A:
When the xPON uses the multi-level optical splitting, the actual split ratio can be calculated as follows: Actual split ratio=multiplication of numbers of the optical splitting of each level For example, in theory, the maximum split ratio of the GPON is 64. In the actual operation, 1:8 optical splitting is used in the first level and 1:16 optical splitting is used in the second level. 8 x 16 = 128 > 64. The actual split ratio exceeds the theoretical value. As a result, services fail to be provided if the split ratio in the service planning is very large. 
 
Root Cause
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Suggestions
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