Five telephone-to-fiber multiplexer models from 1 to 16 channels of FXO/FXS — for the phone lines that must survive the copper retirement: lifts, gates, exchanges and sites.
Plain old telephone service refuses to die for good reasons: lift emergency phones, gate intercoms, fax-and-alarm lines, exchange tie-lines and remote buildings whose only service requirement is a dial tone that always works. As copper access networks retire, those lines must be re-homed onto fiber — as POTS at both ends, because the devices at the ends are telephones, not computers. This family does exactly that: FXO/FXS interfaces multiplexed onto fiber, in channel counts that follow the way phone lines actually cluster.
The documented range is a ladder: 1, 2, 4 and 8-channel POTS (FXO/FXS) telephone over fiber mux units for outbuildings and small sites, up to the 16 Slots 4U Telephone Fiber Mux Rack for exchange-scale aggregation. The pattern mirrors the E1 world's discipline — a legacy service, treated as a service, with the fiber as transport rather than as an excuse to re-engineer the endpoints.
| Model (official product name) | Series | Documentation |
|---|---|---|
| 14 Slots 2U Telephone Fiber Mux Rack | LNK-PR14 | Specification captured from the official product page |
| 16 Slots 4U Telephone Fiber Mux Rack | LNK-PR-4U | Specification captured from the official product page |
| 24Ch POTS（FXO/FXS）Telephone over Fiber Mux | — | Full specification confirmed per model at quotation |
| 32Ch POTS（FXO/FXS）Telephone over Fiber Mux | — | Full specification confirmed per model at quotation |
| 64Ch POTS（FXO/FXS）Telephone over Fiber Mux | — | Full specification confirmed per model at quotation |
| 16Ch POTS（FXO/FXS）Telephone over Fiber Mux | — | Full specification confirmed per model at quotation |
| 1Ch Framed E1 to Fiber Converter | — | Specification captured from the official product page |
| 1Ch POTS（FXO/FXS）Telephone over Fiber Mux | — | Full specification confirmed per model at quotation |
| 1Ch Unframed E1 to Fiber Converter | — | Specification captured from the official product page |
The Telephone to Fiber Mux family (5 models) plus the POTS mux models in Other Fiber Optic & Networking Products (1/2/4/8/16-channel units).
A telephone line has a switch side (FXO-facing) and a station side (FXS). The mux ends are not interchangeable. The inquiry should state, per line, what sits at each end: PBX/exchange port or telephone instrument. That single fact pattern determines the unit pairing.
Phone lines accrete (an alarm line here, a lift phone there). The ladder runs 1→16 channels; a site at 6 lines today belongs in the 8-channel class, and the quotation will show the step pricing so the choice is informed.
Some endpoints are fussy — fax machines, modems, alarm panels that listen for line conditions. Name special endpoints in the inquiry; voice-band services are the design centre, and exceptions are confirmed per model.
Yes — the mux units are active devices at both ends of the fiber. Sites that need line survival through power cuts should state it; the power plan (battery-backed supplies at the mux points) is part of the design.
If the endpoints must remain telephones and the service must behave like a line (lift phones are the classic case), POTS-over-fiber preserves the behaviour exactly. VoIP re-engineers it. The deciding voice is usually the compliance requirement on the line — state it in the inquiry.
On separate strands of the same cable, routinely. The mux is its own link; the spine design (see the CCTV architecture page) accommodates parallel services by design.
Send the model name, the distance, the fiber type and the quantity. We will confirm the matching transmitter/receiver pairing, the optical module and the full specification of the exact model in writing before you pay.