The rise of Telecom industries in recent years has been at an exponential rate. The evolution per se has been in three different phases, from the Traditional interface (FXO/FXS) to the Digital Interface (T1/E1 PRI) and the latest VOIP (3G/4G/VoLTE).
VOIP usage in the USA, according to Statista and Tech. co has seen an abrupt rise in just a gap of 8 years. While residential adoption of VoIP services remained high, small and mid-size businesses too saw a large surge in adoption of VoIP in recent years.
