We don't have a landline. We haven't had one for about 2-3 years now. My neigbor allows me to connect into her wifi so that is cool so I have no internet costs.
My cell phone company, told me to set my 911 on LOCATION ON. The reason for this is because so many people no longer have landlines that if you have an emergency and you only have it set for 911 only, they will go to where ever it is that your address is on your account. With LOCATION ON....they will find you where ever you are at. :)
But I hope to never have to use that feature. :)