Conditions NoteThe extension will be received an Extension Group call when thestatus of the extension is as follows:• Idle• Receiving a call (Only when Call Waiting is enabled)• FWD All is enabled (Only Hunting group is selected)When the extension is receivedan Extension Group call, theFWD setting for the extension isignored. Refer to 3.1.9 CallForwarding (FWD)When FWD is set in an Extension Group, calls follow the FWDsetting.If call distribution is selected forHunting group, Call Forwarding isoperated when all extensions inExtension Group cannot receivea call. (Only when FWD Busy/NAis enabled)For the following features, the extension settings registered at thehead of the Extension Group are applied to the Extension Group:• FWD to trunk settings: Permission to FWD to a trunk.• TRS settings: Trunk call restriction.Reference:• 3.1.9 Call Forwarding (FWD)• 3.4 Toll Restriction (TRS)/CallBarring (Barring) FeaturesExtension Groups are used for Call Pickup and Paging feature. Reference:• 3.1.8 Call Pickup• 3.10.1 PagingPIL Reference2.3.4 PBX Configuration—[2-4] Extension—Extension Group3.1.13 Calling Party Control (CPC) Signal DetectionDescriptionThe Calling Party Control (CPC) signal is an on-hook indication (disconnect signal) sent from the analogTrunk line when the other party hangs up. To maintain efficient utilization of Trunk lines, the PBX monitorstheir state and when CPC signal is detected from a line, it disconnects the line.ConditionsConditions NoteCPC signal detection is programmable for incoming Trunk line calls,and for outgoing Trunk line calls.If a CPC signal is detected during a Conference call, that line isdisconnected, but the remaining parties stay connected.If a CPC signal is detected during a call between a caller using theDISA feature and an extension or an outside party, the line isdisconnected.For CPC signal detection, enabling of detection and detection timecan be set for both the outgoing CPC signal and incoming CPCsignal.• CPC Signal Detection Time Outgoing• CPC Signal Detection Time Incoming3.1.13 Calling Party Control (CPC) Signal DetectionFeature Manual 37