It is only necessary that both you and your language exchange partner use the same voice chat program.
Skype is a free downloadable, real-time voice and text chat communications program.
tarpor amon kore amra 2 jonei 2 joner bai k chuda diye gechi.
Amar shami Dubai te job kore barite ami ar amar choto abar arekti farm a job kore.
The type of exchange that is right for you depends on your proficiency level in Bengali and your learning goals.