Proration is the engineering practice of distributing acceptable limits for noise, signal loss, or delay across a series of connected network elements. Instead of assigning a single budget to the entire link, planners divide the total allowance among cables, repeaters, and switches. This ensures that a long circuit built from multiple segments still meets the overall quality target.
Heard on the job
Check the proration on that trunk circuit to see if the new fiber segment absorbs too much of our optical loss budget.