This will only work if you have the GPS turned on and the local 911 system can handle the information. The enhanced system will provide a location that is 164 to 984 feet from the cell phone! That is a pretty large distance, which in a city or built up area, could include dozens of homes. Even in our sorta rural area, being off by 900 feet could have first responders on roads that do not lead to our place.
We seldom have the GPS turned on both for security and to get longer battery life so if we were not able to talk, dispatch would not have a good fix on our location. One of our kids dialed 911 by mistake and a deputy showed up at the house. We are sorta rural and the only reason he came to the house is that we had talked to him a month or so previously about some trespassers. He only knew which tower had gotten the 911 call and that tower is within a mile of the house so he checked on us. However, there are likely 50-100 houses within a mile of that tower. In this case, the 911 call was made from an out of use cell phone so their was no linkage to an address and the officer made a danged good guess on where the call originated.
My understanding is that if we dial 911, then dispatch SHOULD see the address linked to the cell phone number, which in our case, is our house. So if we are home, the 911 service is working at the latest levels, and/or we have GPS turned on, then dispatch SHOULD be able to figure out were to send the first responder.
We have kept our land line for backup and 911 service. We have DSL so we have to have the land line anyway but we do not use the service for phone calls. The price has been going up and the wifey called up the phone company, and long story short, the company reduced the price by about $25 a month.
Later,
Dan