Communication= Exchange of talk/massage/information
A short conversation or argument= a brief exchange
There was a brief exchange between the two leaders.
Exchange is also a Two-Way Process where you give something (not any specific) to someone and they give you something else
They were given food and shelter in exchange for work.
Several people were killed during the exchange of gunfire.
This term has wide applications covering the entire field of human activity, be it from national to international or finance/banking to simple human labor. We all are acquainted with such terms as: stock exchange, foreign exchange, telephone exchange, rate of exchange etc.
Your sentence is ok with exchange, but say: increased exchanges
Student or Learner