*66: Activate Automatic Callback
1. Hang up once you hear a busy signal. Pick up the handset again, listen for a dial tone and dial *66.
2. You will hear a recorded message confirming that the line is busy and that it will be monitored.
3. Hang up. When the line is free, you will be notified by a special ring.
4. Pick up the handset after the Automatic Callback ring and your call will be placed automatically.
*86: Cancel Automatic Callback
1. Pick up the handset, listen for dial tone and dial *86.
2. Hang up. Automatic Callback is cancelled.