PairFinder: Cable Color Codes

PairFinder is the color-code and field-tools reference built by a telephone tech, for telecom techs — splicers, installers, repair techs, OSP engineers and anyone working copper or fiber plant.

Type a pair number and get the answer in a tap. No account, no ads, no tracking, and it works offline — in the vault, the manhole or the back of a pedestal with no signal.

COPPER
• Pair lookup, 1–4,200 — super binder, binder group and tip/ring colors, plus ranges like 101–126
• Visual picker — drill down by the colors you see: super binder → binder → pair
• Every color standard — Bell 25-pair, Odd-Count PIC, Japanese NTT, Bell Toll (pre-1950) and Adtran 32-pair
• Clocked / mirrored cable splicing reference
• Cable makeup — build a cable's counts and dead pairs, look up by physical pair or assigned count
• Terminal assignment and splice / cable planner

TESTING & TROUBLESHOOTING
• TDR distance to fault from round-trip time and velocity factor
• Resistive fault distance and Murray loop calculators
• Bridged-tap loss for every DSL profile (POTS, ADSL2+, VDSL2 8b/17a/35b, G.fast), computed from a real twisted-pair line model, with the notch frequency
• DSL speed estimates by gauge, distance, bonding and vectoring, plus a DSL band-plan spectrum view
• Pair diagnostics, loop resistance, air pressure and conduit fill references

FIBER
• TIA-598 fiber lookup — buffer tube, tracer and strand color by position, for 6/12/24 fibers per tube, ribbon and tight buffer, up to 3,456 fibers
• Fiber picker — cable type → tube or ribbon → fiber
• Jacket colors, cable types and a connector reference
• Cable ID — decode copper and fiber cable jacket markings

BUILT FOR THE FIELD
• Fully offline after the first launch
• Big touch targets, Back button that does what you expect, pinch-zoom
• System, Light, Dark and Color Blind themes, plus Legacy Bell with Pro
• 12 languages: English, Spanish, Portuguese (Brazil), French, German, Italian, Dutch, Russian, Polish, Turkish, Indonesian and Hindi
• No account, no ads, no tracking

FREE vs PRO
Free covers pairs 1–25, fibers 1–12 and the full color references. PairFinder Pro is a single one-time purchase — no subscription — that unlocks every pair, every standard, all fiber types and all tools. It is tied to your Google Play account and restores automatically on a new phone.

PairFinder is a reference aid: always verify against cable markings, your employer's practices and your test equipment. Calculator results are estimates.

Questions or a standard you'd like added? support@simplifiedmedia.net