Yealink W56H Bundle of 2 IP DECT VoIP Phone Handset, HD Voice, Quick Charge

does this phone need to have a base to operate?

Are vetch phones compatible with yealink phones

I recieved these phones and they came in verizon boxed. i am thinking they are locked for verizon and i cannot set them up, how do i know?

The phone came with no instuctions. When I try to update a config file the handset keeps telling me provsioning is failing what am I doing wrong?