Interface type
Count Ethernet ports, their rated speed, and any POTS or RF ports. A four-plus-two faceplate can still hide a fast-Ethernet UNI where you expected gigabit.
FIBER OPTIC EQUIPMENT · US BUYERS
4 2 fiber onu
A 4 2 fiber onu label is a starting phrase, not a finished specification. LinkScope Sourcing 09 is an independent sourcing partner. The desk asks factories to price the same port map, PON plan, optical window, power input, and accessory list, then lays those replies next to one another.
Trade shorthand often reads “4 2” as four Ethernet user ports plus two voice ports. That reading is a question for the datasheet, not a fact this desk can assign to an unnamed box. Write the actual UNI types, the PON interface, and the OLT you already have before a unit price means anything.
Request Factory Quotes Review inquiry options
Quote scope that has to match before prices are ranked
Each cell is a field the supplier should answer. A family brochure does not fill the cell for the model they later name.
Data rate and PON plan
Ask whether the offer is GPON, EPON, or another PON. Public G.984 discussion often cites 2.488 Gbit/s downstream and 1.244 Gbit/s upstream. Those figures are a checklist, not a measurement of the unit in front of you.
Wavelength and fiber mode
Ask for upstream and downstream wavelengths, commonly discussed as 1310 nm up and 1490 nm down, plus any 1550 nm video overlay. State single-mode plant versus a multimode assumption. Most access ONUs are specified against single-mode fiber; do not let a short-reach multimode habit rewrite the plant.
Reach, connector, optical budget
Record connector polish (SC/APC versus SC/UPC), the optical class the datasheet claims, and the loss budget in dB. A Class B+ discussion around 28 dB is a question, not an acceptance limit this desk has tested.
Power, temperature, diagnostics
Separate the adapter voltage, typical and maximum draw in watts from the datasheet, the operating temperature range, and which diagnostics the management path exposes. Transmit power and receiver sensitivity belong on the same row as the named model.
What sits outside the unit price
Power adapter, fiber pigtail, mounting ear, firmware, voice licenses, freight, duties, and the destination. Those lines move the landed total even when the port map matches.
Deployment routes that stay on separate lines
FTTH drop to a living-unit ONT
Use this line when one subscriber takes a single-mode drop. Record the splitter position, the expected optical budget, and whether voice ports are actually wired. A photograph of a white enclosure does not show the split ratio.
MDU closet or floor box
A shared closet changes the temperature range, the power feed, and how many units share a tray. Ask for ingress protection of the enclosure you will actually mount, and keep spare-unit rows off the live-service row.
Small-site demarc and replacement
A replacement brief needs the existing OLT vendor, the management method, and whether the ONU must bridge or route. Host compatibility is an OLT-and-firmware question. It is not settled by a matching connector color.
Continue in the device RFQ fields or the buyer notes. An ITU-T optical-fibre recommendation page checked on 2026-10-27 can suggest fiber questions. It does not certify any ONU.
Delivery questions that change the comparison
What date is the lead time measured from?
Ask whether the clock starts at order acknowledgement, at deposit, or at drawing approval. A week count without that anchor cannot be lined up against another factory.
Which Incoterm and which lane?
Name the US destination city or port and the Incoterm the figure uses. A unit price that stops at the factory gate is a different commercial scope from a price that includes freight.
What is packed with the ONU?
Adapter, pigtail, screws, and a printed quick guide are often optional. Write them into the line so a lower-looking unit price is not missing the parts the installer needs.
Who checks the unit before it ships?
Decide whether you want a document pack, a photo of the port face, or a pre-shipment functional check. This desk does not perform that check. The supplier’s method has to be named.
Compare factory quotations on one ONU brief
Send the port map, PON type, connector polish, quantity, destination, and timing. Optional budget needs a currency and a per-unit or whole-order basis. High-end, mid-range, budget, or undecided is your preference, not a rating we have verified.
No percentage saving is published here. The comparison is the delivered scope, not a headline unit price.