Direct answer
The common 12-color sequence identifies strands within a group; high-count cables also need tube, ribbon or other group identifiers. Color numbering alone does not establish MPO polarity or port mapping. Specify the color scheme, grouping rules and end-to-end continuity records.
Identify the colored object first
Fiber coating, buffer tubes, ribbon identification and the outer jacket are different objects. CommScope lists fiber and jacket color information separately; Corning AEN029 addresses fibers, units and groups. Keep these fields separate in procurement records. CommScope color information Corning identification note
Use this guide for multistrand trunks, preterminated branches and high-count handover. It does not prescribe one scheme for every manufacturer, region or custom assembly.
Common 12-color sequence
The sequence below follows the TIA/EIA-598 chart in the cited CommScope guide. Apply it only after confirming that the purchased cable uses that scheme.
| Position within group | Color |
|---|---|
| 1 | Blue |
| 2 | Orange |
| 3 | Green |
| 4 | Brown |
| 5 | Slate |
| 6 | White |
| 7 | Red |
| 8 | Black |
| 9 | Yellow |
| 10 | Violet |
| 11 | Rose |
| 12 | Aqua |
Do not identify strands from a screen photograph alone. Use numbers, the supplier's approved legend and continuity records to avoid ambiguity from lighting, aging labels or similar colors.
Identification beyond 12 strands
Corning AEN029 Revision 12 describes product-specific repeat-color tracing and numerical ribbon/group identification. AEN180 Revision 0 addresses repeated tube colors in multilayer loose-tube construction. Identify the group as well as the position; a second blue object is not automatically global strand 13. AEN029 AEN180
For a project with approved 12-strand groups, a group identifier plus within-group number is a useful record key. This is an editorial recommendation. The physical association with a tube, ribbon or branch must follow the approved cable drawing.
Handover identification checklist
| Level | Record field | Cross-check |
|---|---|---|
| Complete assembly | Assembly ID and drawing revision | Label and approved BOM |
| Physical group | Tube, ribbon or branch ID | Supplier grouping rule |
| Within-group strand | Number, color and tracer | Approved color legend |
| Global identification | Group plus within-group number | Unique-ID list |
| Termination position | Both connectors and fiber positions | End-to-end map |
| Test correspondence | Unique ID and measured result | Continuity and loss records |
This table proposes procurement records, not a mandatory standard format. Use samples to check repeated colors, label legibility and correspondence between physical strands and report numbers.
Relating colors to MPO polarity
Colors identify strands; polarity and end-to-end maps identify how positions connect. Cross-check the records rather than inferring identical polarity from identical colors. Preserve all input/output positions for branches, cassettes and optical shuffles.
If another agreed color scheme is used, changing text labels alone is insufficient. Update the grouping legend, mapping and test identifiers together and keep a common document revision.
Procurement FAQ
- Does blue always mean global strand 1? It can mean position 1 within an approved 12-color group. High-count cables also need a group identifier.
- Must strands 13–24 use black rings? Tracers and exceptions are product-specific; do not generalize one manufacturer's construction.
- Does jacket color establish strand numbering? The jacket and internal strand identifiers are separate levels.
- Do matching colors establish MPO polarity? Review the end-to-end positions and continuity evidence separately.
- What is the most useful sample check? Choose a repeated-color group and verify that labels, legends, maps and test IDs identify the same unique strand.
Prepare an identification review
Provide the supplier color scheme, grouping drawing, endpoint map and label samples. Related configuration pages do not confirm that ARRANEX uses any particular numbering or marking scheme.
Related products and technical guides
Sources and review date
Sources checked on 2026-10-10. Manufacturer examples apply only to the cited products. Selection tables and procurement records are editorial recommendations, not ARRANEX performance, certification or supply commitments.
Sources checked: 2026-10-10