No problem, glad to help. E911 is a topic that only a few folks really understand well, and it is also one that is widely misunderstood and full of rumors on how people *think* it works.
Many are shocked to find out it is as simple as it really is, and the limitations in today's E911 infrastructure. Next Generation 911 networks are being built in many states, and once SIP trunking is a standard deployment, we as manufacturers can start exploiting th epower of the data network with device discovery and actual data transmission to the PSAP like maps, or medical records if I as a user deciode to 'opt-in' for that.
Today, it's just caller ID and look ups over an archaic low speed data network to a carrier based database that may or may not be correct or appropriate for the caller. If you have any other questions, or want to run something past me, I'd be happy to help.
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Fletch
Avaya E9-1-1 Product Manager