I have created a dial plan which works well with BulkVS. If I fill in the location information in the 911 record the psap knows exactly where the call came from. However, to use their dynamic 911 services they say to add "ng911" to the Floor/Room location of the registered DID file and add X-ng911 to the extension header in my FusionPBX. I don't see anywhere to do that in FusionPBX, does anyone have a clue how to do this?