Make a Conference Call On Your Digital Phone Set (Without A Special Conference Phone Device)
1. Dial the first party and wait for an answer
2. Press CONF
3. Dial the number of the next party and wait for an answer
4. When they answer, press CONF to join them to the call
5. To add another new party, press CONF and dial the number of the new person
6. If they agree to join the call, press CONF