I work in a school system and we are installing an asterisk system and the school would like it so that if a class room calls 911 the nurse and office staff get an alert on their phone. They would like it so that a sound will play and show from what room on the phone display the 911 call came from. Is there any way to do this?
Do you want the 911 call to go through to the emergency services without the staff being able to talk to the caller? That should definitely be doable. The difficult bit is forking the call, but you can use AGI or System to trigger a call file. Later versions may allow Originate directly from the dial plan.
Also, please remember that 911 is USA specific, although most people probably are aware of what it means: the emergency services number for urgent response by fire, police, ambulance services, etc.