Given how interconnected the world is, service outages can lead to serious real-world consequences, said experts who spoke to CNA. SINGAPORE: More stress tests and stricter change management controls are some of the measures telecommunication operators can take to minimise instances of mobile service outages, said experts. Singtel customers reported connectivity issues on three consecutive days last week, as well as Monday (Mar 23) this week.  Professor Anthony Tung from the National University