Currently, outbound calling is not possible directly via our Dashboard, only through our Voice API and SIP Trunking.
Messagebird’s Voice Calling API enables VOIP features for your web application to make, receive, and monitor voice calls from a MessageBird virtual mobile number (VMN) to and from any country around the world through a REST API. You can find a further explanation on how to do this in our Developers Documentation for Voice Calling.
Looking for a VoIP tool but not a developer? Check out how to set up a SIP Trunk in these SIP Trunking articles.