Telephone Features 3-673.2 Telephone Features EConditions• This feature does not work when “Data Line Security” or “Executive Busy OverrideDeny” is set at either or both of the other parties.• When a two-party call is changed to a three-party call or vice versa, a confirmation toneis sent to all parties. The tone can be disabled.Programming References• System Programming — Installation Manual[105] Conference Tone[608] Executive Busy OverrideFeature ReferencesConferenceData Line SecurityExecutive Busy Override DenyExecutive Busy Override — ExtensionAllows you to connect to an existing intercom (extension) call. System Programming isrequired to use this feature.Any TelephoneDial 2.2Confirmation tone (optional)If you make an intercom call and while hearing a busy toneA three-party conferenceis now established.To leave the conferenceAny TelephoneThe other two partiescontinue their conversation.Hang up or press SP-PHONE .To terminate one party and talk to the otherPTConfirmation tone (optional)Press the CO or INTERCOMof the party to remain connected.COor INTERCOM• If all three parties are extensions, this operation is not available.
