What should an MTP/MPO branch harness RFQ include?

Include the buyer-controlled assembly role, endpoint IDs, MTP/MPO-side and breakout-side interfaces, fiber count and mode, polarity or mapping reference where defined, each requested length, quantity, labels, packing, destination and the current BOM or drawing revision.

Why include a port-map reference with a breakout-harness RFQ?

A port-map reference makes clear which breakout leg belongs to which buyer endpoint. It helps keep the requested assembly reviewable without asking a supplier to infer the equipment path or make design choices.

Which related lines can be quoted with an MTP/MPO harness?

When they are within the buyer's scope, related lines can include MTP/MPO trunk cables, cassettes or module boxes, high-density patch panels, patch cords, AOC or DAC cables and optical transceivers. Each should retain its own line ID and connection reference.

MTP/MPO Harness Port-Map RFQ Guide

Start with the endpoint relationship

“MPO to LC harness” does not by itself show which breakout leg reaches which buyer endpoint. For an MTP/MPO cable assembly supplier RFQ, give each assembly line a buyer-controlled line ID and identify the high-density endpoint, the breakout-side endpoint group and the applicable port-map or drawing revision. The supplier can then review the requested assembly without inventing a channel layout.

This is distinct from choosing a polarity method or a fiber count. Those details belong in the same RFQ when the project defines them, while the port map records how the buyer wants the completed assembly associated with endpoints.

Build a harness line that stays usable through revisions

Line controlBuyer line ID, BOM revision, issue date and change note.

Assembly roleState branch harness, fanout, trunk transition or another requested pre-terminated fiber cable assembly.

Endpoint referencesName the buyer-controlled high-density endpoint and breakout-side endpoint group or equipment reference.

Port-map referenceAttach or cite the drawing, port schedule or mapping revision that assigns breakout legs.

Requested configurationRecord MTP/MPO-side and breakout-side interfaces, fiber count, fiber mode and polarity reference where defined.

Length and commercial fieldsList trunk, harness and unequal breakout-leg lengths separately, plus quantity, labels, packing and destination.

Keep connected hardware visible, but separate

A high-density path may also contain an MTP/MPO trunk, cassette or module box, high-density patch panel, patch cord, AOC/DAC cable or optical transceiver. Add these only when they are part of the buyer’s scope, and keep each as its own BOM line with a connection reference. This prevents a quote request from silently merging unlike components.

Common port-map RFQ mistakes

Giving a generic harness name but no high-density or breakout-side endpoint reference.
Attaching a port map without stating which revision governs the requested line.
Using one overall length when the breakout legs require individually stated lengths.
Combining a trunk, harness and panel into one cable description rather than connected lines.
Leaving polarity, fiber count or interface choices unstated while expecting the supplier to assume them.
Changing the endpoint drawing without marking the affected line IDs or revision note.

Copyable MTP/MPO harness RFQ checklist

Buyer line ID, BOM revision, issue date and change note
Assembly role: branch harness, fanout or trunk transition
High-density endpoint and breakout-side endpoint group
Port-map, equipment schedule or drawing reference and revision
MTP/MPO-side and breakout-side connector interfaces
Fiber count, fiber mode and polarity reference where defined
Trunk, harness and breakout-leg length list
Quantity, labels, packing request and destination country
Related trunk, cassette, module box, panel or active-cabling line IDs when included

Related MTP/MPO sourcing pages

Send a buyer-controlled port-map RFQ

Share the line schedule, endpoint and port-map reference, requested interfaces, length list, quantities and current BOM or drawing revision. Lumafyn can use those buyer-supplied requirements to review the MTP/MPO assembly quotation path.

Prepare an MTP/MPO Harness RFQ