According to the telephone department no further intervention is mandatory upon receiving an emergency alert on the phone

The Department of Telecommunications (DoT) sent out a sample testing ‘Emergency Alert’ on, Oct 10, however telephone department assured users by asked them to ignore this.

To know detail, please click on the following shared link,

https://www.livemint.com/news/india/another-emergency-alert-on-phone-telephone-department-says-no-action-needed-11696918036340.html