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Are VoIP 911 Problems Life-Threatening?: Page 5 of 7

The situation is a little better for cell phone users. Some services will route your call to the 911 operator, but location information isn't always easy to come by. The GPS chip in some phones won't work inside a building and may not work inside your car. Triangulation, while getting better, is far from perfect and may not work at all in many areas. So you'll have to provide the information yourself by telling the operator exactly where you are, assuming you know.

What To Do

If you feel you really must have VoIP, there are some things you should think about.

First, find out if the VoIP provider offers 911 service, and if it does, where the calls will go. Once the service is installed, try out a 911 call. Confirm that you can actually get through, and then find out where your call ends up. Make sure that the party on the other end gets your location data as well.

Second, consider keeping your POTS line for emergency use. Most phone companies have a limited service plan that's very inexpensive, but that can support 911 calls just fine. These may be called "measured rate services," and there is usually an upper limit to how many calls you can make without paying extra. Such lines are very inexpensive, so long as you stay within the limits. You may decide that the risks of VoIP aren't worth the modest savings of ripping out your POTS line.