You don’t have to buy thousands of phones to provide voice over data connections.
One of the biggest phone vendors requires about half a milion phones purchased to enable VoLTE on their phones for your network. That could lead to milions of dollars in investment for just one phone vendor. You need to setup agreements with dozens of vendors.
2Greet can be integrated into every type of network and works on any Android phone from the box. Save your resources to grow and develop your business rather than buying phones.