M1 launches high-definition WiFi voice calls trial at Jurong Lake District

It uses HetNet technology.

M1 has launched Singapore’s first public native Voice over WiFi (VoWiFi) trial under the Infocomm Development Authority of Singapore’s (IDA) national HetNet Trials initiative.

VoWiFi technology allows users to make data voice calls without having to install or use a separate calling app. The service will also allow calls to and from fixed numbers, unlike OTT (over-the-top) calling apps which only allow calls between handsets with the same calling software.

The service also supports two-way mobility between WiFi and mobile networks. This means that a voice call initiated on a WiFi network will not disconnect when the user moves to cellular network, and vice versa.

The service is currently available to users at M1’s WiFi deployment sites within the Jurong Lake District.