“It is known that in Role Tailored Based environment BEEP C/AL function is not supported” https://msdn.microsoft.com/en-us/library/dd301405.aspx?f=255&MSPPError=-2147217396
… nice old post (but actual) with linked sample from NAV TEAM about utilization of .NET Interop (in this case with “SystemSounds Class from System.Media”) to simulate the obsolete BEEP Function) https://msdn.microsoft.com/en-us/library/ms143809.aspx
Source: Let NAV BEEP! (with .NET Interop and Microsoft Dynamics NAV 2009 R2) – Dynamics NAV Team Blog