Singapore’s Infocomm Development Authority (IDA) has opened consultations on a proposed interconnect and numbering regime for voice services provided over the city-state’s wireless broadband networks. Three operators—Singtel, iCell and Qalanet—offer wireless services in the 2.5GHz band as part of Singapore’s Wireless@SG initiative and the IDA says it is now time to formalise an industry regime to support voice services carried over those networks. The IDA adds that the move is needed as part of the global shift from discrete PSTN and wireless networks to a converged next generation network. However, the Agency stops short of harmonising the standard numbering range with IP addresses.