Answer: callbacks

AnswerCrossword Clue
callbacksAn emergency call summoning an employee to work after hours
callbacksA telephone call made to return a call received
callbacksA security feature used by systems accessed by telephone, in which a remote user must log on using a previously registered phone number, to which the system then places a return call
callbacksA recall of a defective product
callbacksCALLBACK, a recall of a defective product
callbacksAn invitation to return for a second audition or interview