Denwa Communications DW-820 User Manual page 74

1. Create talking with first party;
2. Press to create a new talking;
3. Input the number of second party and press the Video Call or Auido Call to make
a call;
4. When the second party answers your call, press the Conference softkey or the
Conference key on the keypad to enter the 3-way Conference interface.
5. Choose the conference account, click Start Meeting.