The phrase "to open the exchange" means to begin a conversation or discussion between two or more people. It refers to the act of initiating communication or starting a dialogue. Full definition
The value of an online community for educators lies in the rich and open exchange of ideas, experiences and resources where educators feel both respected and supported. (educationnorthwest.org)
Our school promotes open exchange, in a safe, orderly, caring and supportive place, where the expectation is one of success. (takedrivinglessons.com)
The gameplay is therefore full of numerous stealth elements as well as purely arcade sequences, including open exchanges of fire. (gamepressure.com)