Brownfield node upgrade strategy

A cable operator is planning to use Extended Spectrum DOCSIS (ESD) technology to upgrade their access network. They are considering two network powering options – central powering vs distributed powering. Which powering model would be best suited for their future network upgrades?

When developing a long-term access network transformation plan, network operators tend to focus on demand growth as the key trigger for upgrades. While accommodating demand growth remains a key driver for upgrading a network, in reality other triggers may enforce a different upgrade strategy and alter the preferred upgrade path and the required investment profile.

An operator wants to move all subscribers to Fiber to the Home. He decides on an aggressive strategy to no longer invest in DSL technology upgrades but migrate network elements to FTTH when they need to be upgraded and wants to understand what is the best starting point: go with GPON or directly introduce XGS-PON?