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Diagram comparing a classic red phone booth connected to a PSTN copper network with a modern gray smart phone booth using G.fast fiber distribution.

Diagram comparing a classic red phone booth connected to a PSTN copper network with a modern gray smart phone booth using G.fast fiber distribution.

A split diagram. Left side shows an old phone booth with a telephone handset; a dotted line traces the copper pair to a telephone exchange labeled “PSTN.” Right side shows the same booth but with sensors on top (air quality, noise), an e‑ink display, and a small enclosure labeled “G.fast modem + edge processor.” A new fiber line connects to a “G.fast Distribution Mehr sehen