No, it expired Dec. 12, 2017, it has been expired for a bit over two years now.
It was filed after 1995, so it expired 20 years from its filing date, which was Dec. 12, 1997.
Thanks for pointing that out. I corrected the title.
I remember Google Voice working this way in the early days: First the caller initiates a call using the Google Voice web interface, then the caller gets a call on their phone, then the recipient gets a call to connect the two.