8.2/4th-gen iPad cannot make phone calls

Hi,

i can use my IMac to make calls on my 6+ no problem. My iPad, however, does not work. I have FaceTime and iCloud signed in and cell calls option turned on. On the iPad, I see a phone icon now on Contacts. When I tap it, it brings up the 'dialing in progress' screen, but it fails after 5-8 seconds with 'iPhone not on WiFi network' error. I am on my WiFi network. I can stream via AirPlay from both iPhone and iPad to my Apple TV no problem.

I have a 4th-gen iPad (AT&T) running 8.2. I've never tried this with the iPad before, so I'm not sure if this is an 8.2 issue or not.

Any ideas?

Regards, Patrick