Mayville State University calls no longer incur long distance charge Calls to Mayville State University no longer require a long distance authorization code. By dialing 3 before the lasts four digits of the telephone number, calls can be placed to MaSU without incurring a long distance charge. This service applies only to telephone numbers at Mayville State University and not to other businesses or residences in Mayville. For additional information, please contact Jan Laventure at 777-4720. -- Jan Laventure, Telecommunications Analyst, Telecommunications / ITSS, janlaventure@mail.und.edu, 7-4720