An additional Dial-in number offered for international callers on a web or audio conference call. As only callers within the US or the US and Canada can access toll free numbers, the alternative dial-in number enables participants anywhere in the world to joint the call. Typically, the international caller will pay international long distance charges from their end from their own long distance provider. As a conference call organizer, you will likely pay a pre-determined per minute charge for each caller, regardless of their location.