incumbent-telcos

What’s the IUC standoff between RJio and the incumbent Telcos?

The entry of Reliance Jio into telecom service business has led to falling revenues and growing losses for the incumbent telcos. The incumbents have been asking for increase in interconnection usage charges (IUC) while Reliance Jio has been pitching for its abolition. A little understanding of the IUC would be useful.