1.1 General Features50 Feature Manual1.1.34 Conference, UnattendedDescriptionThe proprietary telephone (PT) user who originated a conference with 2 outside parties can leave theconference and allow the other parties to continue the conversation. The user may return to the conferenceat any time, if he or she desires.Conditions• Conference ButtonOn a PT that does not have a CONF (Conference) button, a flexible CO button can be customized asa Conference button.• Consultation HoldWhen an extension user tries to establish a conference call, the current call is automatically placed onconsultation hold until the conference is established ( 1.1.36 Consultation Hold).• Unattended Conference RecallThe duration of unattended conferences is restricted by a system timer ( [205] CO-to-CO Line CallDuration).A ring tone or an alarm tone is heard at the conference originator's extension 50 seconds before thetimer expires.A warning tone starts to be heard by parties in the unattended conference 15 seconds before the timerexpires.If the originator returns to the conference before the unattended conference call is disconnected, thetimer will be canceled. If not, the ring tone or alarm tone and the warning tone will continue to be hearduntil the unattended conference call is disconnected ( 1.1.91 Outside-to-Outside (CO-to-CO) LineCall Duration).• An unattended conference cannot be established unless the extension is allowed to transfer a call toan outside party through system programming ( [606] Call Transfer to CO Line).Programming Manual References[PT Programming][205] CO-to-CO Line Call Duration[606] Call Transfer to CO Line[PC Programming]9.1.7 Timers [1-6]—Call Duration—CO-to-CO Duration Limit9.2.1 Main [2-1]—Transfer to COFeature Manual References1.1.33 Conference1.1.36 Consultation Hold1.1.59 Fixed Buttons1.1.61 Flexible Buttons1.1.91 Outside-to-Outside (CO-to-CO) Line Call Duration
