This feature was announced by the Facebooks vice president of messaging, David Marcus on his Facebook profile.
Messenger is having about 900 million active users every month.
The company is adopting amazing strategies to get to attract more and more people towards messenger.
In case, if any friend misses the call, he/she can still join throughout the call.
Messenger is getting group voice calling not video calling, and this feature may be rolled out soon.
