[Q] Unable to receive phone calls on unlocked Verizon Note 2 - Verizon Samsung Galaxy Note II

I have a Verizon Note 2. It's running stock. I also have both Verizon and ATT service.
With my Verizon LTE sim in, obviously everything works (SMS, receiving/starting phone calls, data). That's not the problem.
When I put my ATT sim in. I can make a phone call. However, if I try to dial my number, the phone call never goes to my ATT phone number that I have in the Note 2. It rings 4 times and I never hear the phone ring. It's not a missed phone call on the Note 2 and than it goes to voicemail.
I even put in another ATT sim from my other ATT line (I have multiple ATT phone numbers). And not being able to receive phone calls also.
What could be the issue? Did Verizon do something to this phone? Yes, I know you have to root to get data access. I don't care about data access. I can send texts and receive text from my ATT sim with the Note 2.
The only thing I can't do is receive a phone call from the Note 2.
Any suggestions?

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update:
I solved my own question.
Very strange. Apparently since I have a data block on my ATT lines. The Verizon Galaxy Note 2 does funky things and won't accept incoming phone calls with the ATT sim in.
I removed the data block from the ATT sim line. And now the Verizon Galaxy Note 2 is able to receive incoming phone calls. Of course since I know have pay per use instead of a data block. I manually went and disabled the actual mobile data on the Note 2.
Verizon doesn't make things simple.
I don't care for data on my Note 2 on ATT since I carry 2 phones with me.
But problem solved. Just weird the phone won't accept incoming phone calls with a data block on the ATT sim line.