Thank you for your kind follow-up. This was the explanation needed. After doing another test this morning, the "pilot's voice" repeated my requests and indeed ATC followed through with responses.
Perhaps Dave would care to indicate that "voice" limitation on the warning message when one starts PF3 Demo, that would avoid similar misunderstandings from potential customers.
There is only one sequence where I experienced difficulties: After Pushback and Start, I requested my clearance to taxi (Ground, Austrian 284 Ready to Taxi, or Ground, Austrian 284 request taxi clearance) from Ground and each time MCE was sending a "request for a radio check", what phraseology do you use for that specific request please?
Enjoy a great week-end both of you.