Yes, you can call both In-Network and Out-of-Network users in Wickr Me and Wickr Pro.
1:1 voice calling is available to all Wickr Me and Pro users. 1:1 voice and video calling, as well as screensharing, are available to Wickr Pro Basic, Gold, and Silver tiers.
Room/group calling and Room/group video calling are only available to Wickr Pro users. Wickr Me users will be unable to join a group/Room call. Out-of-Network Pro users (users on other Wickr Pro networks) will be able to use the features available to them (voice, video, and/or screensharing as their Administrator allows on their Network).
Wickr Pro Silver and Gold users can have up to 50 participants on a Room/Group call/video call and all products support 1:1 Direct Message calling.