What should I do if I receive a call for help in the intercom?

The importance is: first, to ensure the safety of yourself and the team; second, the team is notified to give up the original plan to save people as the only goal; third, establish contact with the outside world, forward the help signal The communication bridge with the outside world; fourth, rescue the rescue when the power can. The third point is very important. If you have not forwarded the help signal to the outside world, do not take any action.