Most people do not realize what goes behind when connecting a call, let alone what is happening when connecting a 911 call. With Enhanced 911 (or E911) service, when someone dials 911, the telephone number and registered address is simultaneously sent to the local emergency center assigned to the caller’s location, and emergency operators have access to the information they need to send help and call you back if necessary.
In the other hand with basic 911, the local emergency operator answering the call will not have the caller’s telephone number or address, thus callers must be prepared to give them this information. Until the caller succeed in giving the operator the phone number, they will not be able to call you back or dispatch help if the call is not completed or is not forwarded, is dropped or disconnected, or if you are unable to speak.
Further consideration shall be given since the traditional phone services, a 911 call is sent directly to the nearest emergency response center. With VoIP phone service, your 911 call is forwarded to a third-party service provider which will automatically or manually route the call to the emergency response center. Since the nomadic nature of VoIP (is possible for one to move the VoIP phone between locations) and IF the registration was not properly updated in the account, the emergency operator may not have the actual real location or valid contact information available; the caller shall immediately inform the emergency operator of the exact location where the distress situation has presented and a reliable contact information; that’s a rule of thumb any time a call to 911 is made. Regardless of the type of service you subscribe. Otherwise there’s a risk of sending police, firefighters or ambulance services to the wrong location.