You chose a company that has old technology. It's not the new technology. It has limited range. It doesn't go as far as required. In fact, your tender says that you might change to the new technology in the future.
I've met with the companies involved in this. It's impossible to take the existing technology and change it to the new technology. You have to buy new technology. Why would you be spending taxpayer money now to replace a system with old technology that within two to three years, when the international standards are agreed to, will have to be replaced again? It's a total waste of taxpayer money.