Sofia FerraroChief Technology Officer · Essays & perspective

Sofia Ferraro / Chief Technology Officer

Three arguments from a challenger operator's network

Perspectives from a life in leadership.

The latest essay

Supplier replacement and network energy5 min read

A forced equipment swap is the cheapest time to redesign a radio site

When a supplier must be removed, the instinct is to replace its equipment like for like and move on. I argue that an operator should treat the programme as the one visit it will make to every affected site this decade, and change power, bands and legacy layers on that visit.

Read the essay

The archive.

Supplier replacement and network energy

  1. Supplier replacement and network energy5 min read

    A forced equipment swap is the cheapest time to redesign a radio site

    When a supplier must be removed, the instinct is to replace its equipment like for like and move on. I argue that an operator should treat the programme as the one visit it will make to every affected site this decade, and change power, bands and legacy layers on that visit.

    Open essay

Open RAN and supplier choice

  1. Open RAN and supplier choice5 min read

    Open RAN belongs where we can name who fixes the fault

    Our 240-site pilot showed that open interfaces lowered prices and widened choice, but made faults far slower to assign. I argue that a challenger should keep Open RAN as a small, permanent second source in defined layers, with one accountable owner for every fault, rather than plan a network-wide migration.

    Open essay

Copper switch-off and power resilience

  1. Copper switch-off and power resilience5 min read

    When the copper goes, the power cut becomes the operator's problem

    An exchange-powered copper line kept working in a blackout; fibre and fixed-wireless lines do not. I argue that operators moving customers off copper should state how long each service lasts without mains power, equip the customers who depend on it, and size site batteries by what each site serves.

    Open essay