Please read the Express Dictate FAQ: www.nch.com.au/express/faq.html
Q. Is ExpressDictate HIPAA compliant?
ExpressDictate is available with Encryption and is HIPAA compliant.
Express Dictate itself has nothing to do with VoIP, try looking at DialDictate if you want VoIP capabilities. And yes, DialDictate supports recording encryption if you are required to secure patient or client data for transmission over the internet (HIPAA Compliant).