*69: Activate Automatic Recall
1. Pick up the handset, listen for a dial tone and dial *69.
2. A recorded message will tell you the number of the last incoming call and give you the choice of returning the call or not.
3. To return the call, dial "1".
4. If the line is busy, a recorded message will let you know. Hang up. The special Automatic Recall ring will let you know when it is free.