How many rings does it take?

How many rings does it take to get to the juicy voicemail prompt on my iPhone?

Finally found out how to set the delay before calls go to voicemail. AT&T Customer Service had no idea when I called a few weeks back but a random guy with the handle dmapr - a Cell guru - on their web based support forum knew the answer.

Go to the dial pad on your iPhone.

• On your phone, dial *#61# and click Call.
• Some text information should be displayed:

The bit that you are interested in is Voice Call Forwarding When Unanswered Forwards To:

• Write down the phone number there (from the +1) then Dismiss the screen.
• Dial **61*1xxxyyyzzzz*11*30# and hit Call.

The 1xxxyyyzzzz is the number you wrote down previously, 30 is the delay in seconds. The delay can be set in 5 second increments, Original instructions included a + before the 1 but I don't see one on my iPhone's dialpad. dmapr said 30 is maximum. I guess you could set it to 5 if you wanted to have no time at all to answer the phone. I'm curious if 30 really is the maximum but actually I'm pretty happy with the delay I have. I just was setting this for the wife. It seems to have worked.

Some of the other readouts from *#61# sound interesting. Anyone want to change the Data Call setting and see what happens?