The data on VoIP connections in Japan indicates a steady growth from 20 units in 2013 to 28 units in 2023. 2023 saw no year-on-year growth. The Compound Annual Growth Rate (CAGR) over the past five years was 2.29%. The forecast for 2028 suggests a small annual increase, with a 1.68% CAGR and an overall growth rate of 8.66%.

Future trends to watch for:

Potential market saturation as the year-on-year growth plateaus.
Opportunities for innovation in VoIP technology and services.
Impacts of changing consumer habits and technological advancements on VoIP adoption.