I have a server that runs Windows Server 2008. It has hyper-v running with 3cx on a virtual machine running server 2008. I have telephones connected and have setup a digital receptionist. When I dial the digital receptionist from inside (dial direct extension) or call in from outside with it set to go to the digital receptionist the voice prompt does not play. Also when you dial the voice mail from an internal extension the voice prompt does not play and it hangs up. The virtual machine and the physical machine does not have a sound card. Is a sound card required for these prompts to work? Am I missing something? Thank you for the help in advance.