Indonesian mobile operator Telkomsel (Telekomunikasi Selular) has soft-launched voice-over-LTE (VoLTE) services.
Marking its 25th anniversary the cellco, 65%-owned by state-controlled fixed line operator Telkom Indonesia, said the new service is accessible to around 114,000 Telkomsel customers in the Jadetabek area (Jakarta, Depok, Tangerang, Bekasi) and Surabaya, with other cities/districts to follow in due course. Telkomsel is focusing on the deployment of LTE at 900MHz as part of long-term plans to deliver 4G services to 95% of the population in cities/districts across Indonesia – a target it reached last month having deployed 87,000 base stations on its network to support a wide range of broadband and digital-based services.
Source: https://www.commsupdate.com/articles/2020/06/01/telkomsel-reveals-volte-launch-in-jadetabek/