[1] Optus may soon to lead the way as the first Australian carrier to deliver a commercial voice over wi-fi service to its consumers.
[2] This follows the commitment by the carrier to launch a voice over wi-fi service within weeks to enhance its customer experience and develop ‘wi-fi calling’ by the end of the year.
[3] Voice over wi-fi has proven popular in the US, and Optus’ rival Telstra also said it was looking at voice over wi-fi as another way of delivering voice services to its customers in the future.
[Source] Australian Information Technology News – Optus set to be first with voice over wi-fi