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Technical resource

DR4 vs FR4 vs LR4 Selection Guide

Choose optical scheme by reach, connector, fiber plant and evidence required for quotation.

Engineering guideCompatibility boundaryLast updated
StatusWorking technical noteUseHuman navigation onlyNext gateModel evidence and independent review

Evidence pack in progress

Choose optical scheme by reach, connector, fiber plant and evidence required for quotation.

This working note remains available for project navigation, but it is intentionally excluded from search indexing until its model-specific evidence, primary references and independent technical review are complete.

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