In a positioning system, each network access device in a first subset of N1 network access devices transmits a wireless location beacon signal, producing N1 wireless location beacon signals that are transmitted by the first subset. Each network access device in a second subset of N2 network access devices receives the Ni wireless location beacon signals from the first subset and calculates N1 TOAs from each of the N1 received wireless location beacon signals, producing N1×N2 calculated TOAs by the second subset. Using one or more wireless transmissions, one or more network access devices transmits the location coordinates of the network access devices and transmits the N1×N2 calculated TOAs, differences calculated among the N1×N2 calculated TOAs, or a combination of one or more of the N1×N2 calculated TOAs and one or more of the differences calculated among the N1×N2 calculated TOAs.