Fibre To The Curb (FTTC) is a hybrid broadband technology that brings fiber-optic cables closer to homes while using existing copper lines for the final connection. As a transitional solution between legacy copper networks and full fiber-to-the-home (FTTH), it balances cost and performance for urban and suburban areas.
Technical Architecture
FTTC networks deploy fiber to street-side cabinets (called Distribution Point Units or DPUs), typically within 300 meters of premises. Within these cabinets, a fiber termination box often plays a critical role by neatly managing the fiber termination process, ensuring that the signal is efficiently prepared for the final connection. The last leg of the connection uses VDSL2 (Very High Bitrate Digital Subscriber Line 2) over copper wires, enabling speeds of 25–100 Mbps depending on distance.
Key Components:
- Optical Line Terminal (OLT): Central office fiber termination
- DPU: Weatherproof cabinet with DSLAM (Digital Subscriber Line Access Multiplexer)
- CPE: Customer-premises modem with vectoring technology to reduce interference
FTTC architecture Typical FTTC network layout
Performance Comparison
| Metric | FTTC | FTTH | FTTN |
|---|---|---|---|
| Max Speed | 100 Mbps | 1 Gbps+ | 50 Mbps |
| Last-Mile Medium | Copper | Fiber | Copper |
| Deployment Cost | $800/km | $2,500/km | $600/km |
| Latency | 8–12 ms | 2–5 ms | 15–20 ms |
Advantages and Limitations
Pros:
- Cost-effective: 65% cheaper than FTTH deployments
- Quick upgrades: Reuses existing copper infrastructure
- Reliability: 30% fewer field repairs vs. FTTN
Cons:
- Speed limitations: Copper segment caps theoretical maximum at 100 Mbps
- Distance sensitivity: Speed drops ~2% per 100 meters beyond 300m
Future Outlook
While Fibre To The Curb (FTTC) remains relevant for medium-density areas, providers like AT&T and NBN Co plan to phase it out by 2030 in favor of FTTH. Emerging G.fast technology could temporarily extend FTTC’s viability to 500 Mbps speeds.
Building an FTTC Network? We supply the full range of OSP (Outside Plant) hardware to global ISPs.
FAQ
Why should ISPs choose FTTC over FTTH for brownfield network upgrades?
FTTC is a highly cost-effective solution for brownfield areas where full fiber excavation is too expensive or logistically difficult. By bringing fiber to the curb and using existing copper for the final few hundred meters, ISPs can offer high-speed broadband with 60-70% less capital expenditure (CAPEX). BWNFiber provides the Outdoor Distribution Terminals needed to make this transition seamless.
Can BWNFiber’s distribution boxes support a future upgrade from FTTC to FTTH?
Yes. Our Modular Fiber Distribution Hubs are designed for scalability. You can start with a small fiber count for your FTTC nodes and easily add more PLC splitters or drop cable connections as you transition to full FTTH, without having to replace the entire enclosure. This protects your long-term infrastructure investment.
How do you protect FTTC curb-side equipment from moisture and environmental damage?
Outdoor curb-side equipment is highly vulnerable. BWNFiber uses SMC (Sheet Molding Compound) or UV-stabilized plastic for our enclosures, which are IP65/IP68 rated. They are tested to withstand extreme temperatures, heavy rain, and dust, ensuring your active or passive equipment at the curb stays functional for over 20 years.
What is the benefit of using pre-terminated cables in an FTTC deployment?
Pre-terminated cables eliminate the need for on-site fusion splicing at the curb, which is often difficult and time-consuming. Using BWNFiber’s Fast-Connect/Plug-and-Play solutions can speed up your FTTC deployment by up to 50%, significantly reducing labor costs and potential splicing errors in the field.
