Voice Services -> SP1 Service -> X_InboundCallRoute : {(1?(7145550001|7145550002|7145550003)):aa},{ph}
where 7145550001, 7145550002, 7145550003 are trusted callers.
Incoming calls from a number in the trusted callers list will be routed to the Auto Attendant where they can press: (1) to ring the OBi PHONE Port, (2) to place an outgoing call, or (3) have the Auto Attendant call them back. All other callers will ring the OBi PHONE Port directly.