The Infocomm Media Development Authority is looking into the disruption to Singtel's fixed voice services. Emergency hotline services like 995 and 999 are now up and running, after the disruption that lasted several hours this afternoon. Hotlines run by banks and medical facilities were also affected, as well as some landlines serving Changi Airport. At one point, more than 2,700 reports related to the telco were filed on an outage tracking website. Assistant Professor Purnima Murali Mohan from the Singapore Institute of Technology explained more about the technology behind fixed voice services.
