A very tall order indeed.
Amazing, but may be a place like that . See VOIPamericas.com. They claim to do all the above.
1) They will support ATA 186 gateways
2)Access to billing
3)Own routes, rate tables and customer access to billing.
Nice chunk of change to start with. If anyone on the board have any experience with this company, I will like to talk with you.
Post on the board for everyone benefit.