Most places, dialling 911 from your cell phone is a mistake. If you have a regular route, why don't you investigate the direct-dial to dispatcher for your regular locales, and program them into your cell phone?
Who answers 911?--Technologies like cell phones and VoIP put emergency responders to the test
By Sam Diaz--Mercury News--May 2, 2005
It's the phone number that can help save a life.
But calling 911 and expecting help to come running is becoming more of a gamble than ever before -- especially in a tech-savvy place like Silicon Valley, where people rely heavily on cell phones and are more likely to try out a new technology such as Internet phone service.
Now more than ever, the emergency phone system is being put to the test. As mobile and Internet phone services spread, it's becoming harder for 911 dispatchers to pinpoint a caller's geographic location, a crucial element of 911 and speedy response times.
In the Bay Area, it's anyone's guess where a cell phone call to 911 will end up -- or how long it will take for a dispatcher to answer.
In most Santa Clara County cities, 911 calls from a cell phone will end up at the local, city-run police dispatch centers. But dial 911 from Fremont or Menlo Park and it's more likely to end up at the California Highway Patrol catchall dispatch center in Vallejo, where it will be rerouted to a closer 911 center -- an extra step that could slow emergency response times.