1. Dial first party
2. Press flash switchhook or flash button
3. Listen for "enter, enter"
4. Press #1
5. Listen for dialtone
6. Dial internal or external number of additional party
7. Announce conference, if desired
8. Press flash switchhook or flash button
9. Listen for "enter, enter"
10. Press #1
11. All parties are connected.
12. To add additional parties, repeat steps two through seven