Okay I wasn't for sure. I know we have a shape file in our mapping program that is specifically for calls, it has different symbology for different types of calls (911 phase 1, phase 2, land line, misc) and I know we have an access database that is specifically for 911 calls but I wasn't for sure how it tied into all of it. I have been going to the NextGen conferences and here in Tennessee (where I live) we are very close to getting our next gen in service. We have the TIPS standard which all 911 centers are going to which is basically a template for all 911 centers to use with their address and center line data and its designed for statewide use instead of county by county or district by district. I don't know why they didn't just create a national standard since this is what it will eventually go to but, hey I'm not in charge lol!