For 911 with the Google Voice + OBi that I have, I can buy a Pay per Call plan through CallCentric that will give me 911 capabilities.
It costs a few bucks for initial setup, then you pay a small fee per month ($1.50) for the 911 recovery fee.
http://www.callcentric.com/rate/plans/pay_per_call/
Most of the other Internet voice providers have 911 included in their package. I know that Ooma does. It's no different than how it works for a landline provider.
The biggest change is that, VoIP equipment can be easily moved to a new location. If a user moves the equipment, they are responsible for sending the new address information to their VoIP provider who will then update the 911 database.
It costs a few bucks for initial setup, then you pay a small fee per month ($1.50) for the 911 recovery fee.
http://www.callcentric.com/rate/plans/pay_per_call/
Most of the other Internet voice providers have 911 included in their package. I know that Ooma does. It's no different than how it works for a landline provider.
The biggest change is that, VoIP equipment can be easily moved to a new location. If a user moves the equipment, they are responsible for sending the new address information to their VoIP provider who will then update the 911 database.