Hmmm, so tentatively ruling your booster is a part of the problem. That was just speculation on my part anyway as a lot of people take shortcuts when initially setting up a cell signal booster.
But looking at your screen captures, I'm wondering what might be gong in with specifically with your Tab. In the first one (left most) there's a section titled 'Device Telephony' and under Phone Type it shows NONE. It should show up as CDMA (most phones are either CDMA or GSM) and at the very least show Voice capable as a Yes. While CDMA (Verizon) phones didn't utilize a SIM card, now with LTE so prevalent they often do. If there's a SIM card in your Tab 2 maybe it just needs to be re-seated:
https://www.verizonwireless.com/support/knowledge-base-178759/
An alternative you might want to look into is using something like Google Hangouts to make WiFi calls (VOIP):
http://www.androidcentral.com/how-make-free-wi-fi-calls-google-hangouts-android