I want to set up my Obi110 so that two stage dialing is always required. I find lots of tips on how to set up one stage dialing, but not on two stage dialing. The reason for wanting this is that I'm using the PSTN line as the primary line to call out and I'm going overseas and I'm worried that if I lose my iPhone, someone can use it to dial all over the world using my PSTN line. So I want to require a password to dial out on all calls.
To use 2 stage dialing just add your iPhone's number to the circle of trust of the Obi. This will make all calls from the iPhone go to the Auto Attendant. Set the attendant PIN on your dashboard.