Telstra's automated tech support

I was unable to connect to Telstra ADSL for a couple of days this week. I tried everything on m own systems without luck. So I dialedthe support number and went through the various prompts. Sometime after I confirmed that I was dialing from the same line as the ADSL connection but before I had a chance to talk to a technician I was suddenly able to authenticate again. This is not the first time either. Weird.