User's Manual 29. Configuring Supplementary Services
Version 6.8 451 Mediant 500L MSBR
1. Open the Supplementary Services page.
2. Set 'Enable 3-Way Conference' to Enable (Enable3WayConference = 1).
3. Set '3-Way Conference Mode' to On Board (3WayConferenceMode = 2).
4. Set 'Flash Keys Sequence Style' to Sequence 1 or Sequence 2
(FlashKeysSequenceStyle = 1 or 2).