Progress: The network operators that use cellphone towers such as this one, have agreed to buy a significant amount of capacity from the wholesale open-access network. Inset: Siyabonga Cwele, the telecoms minister. Picture: SUNDAY TIMES/BUSINESS DAY Mexico’s new wholesale mobile network, which SA regulators want to emulate to an extent, could have 20 contracts in place with private-sector operators by the end of 2018.SA’s contentious Electronic Communications Amendment Bill, which is ready to be presented to parliament, recommends the creation of a wholesale open-access network that would give . . .