Anonymous 11/17/2021 (Wed) 18:30:16 No.53779 del
The testing sound will simulate an emergency alert, beginning with the alert tone, known as the Canadian Alert Attention Signal," Alert Ready said in a statement. "The message will indicate that it is a test and does not require action from the public."

https://www.ctvnews.ca/canada/this-is-a-test-emergency-alert-system-tests-happening-across-canada-today-1.5669570