6.10 [4-2-1] Portable Station—Extension Settings—Main— COSPT Programming Manual References2.1.8 COS Programming[602] Class of ServiceFeature Manual References21.1 Capacity of System Resources3.1.22 CPC (Calling Party Control) Signal DetectionDescriptionThe Calling Party Control (CPC) signal is an on-hook indication (disconnect signal) sent from an analog COline when the other party hangs up. To maintain efficient utilization of CO lines, the PBX monitors each line’sstatus and when CPC signal is detected on a line, the PBX disconnects the line and alerts the extension witha reorder tone.Conditions• CPC signal detection is programmable for incoming CO line calls, and for outgoing CO line calls.• If your telephone company sends signals similar to CPC, it is recommended not to enable CPC signaldetection on outgoing CO line calls.• If CPC signal is detected during a conference call (® 3.1.18 Conference), the line is disconnected. Theremaining parties stay connected.• If CPC signal is detected during a call between a caller using the Direct Inward System Access (DISA)feature (® 4.1.8 DISA (Direct Inward System Access)) and an extension or an outside party, the line isdisconnected.PC Programming Manual References3.30 [1-1] Slot—Port Property - LCO Port— CPC Signal Detection Time—Outgoing, Incoming3.36 [1-1] Slot—Port Property - T1 Port→ CPC Signal Detection (DID)—Outgoing, Incoming→ CPC Signal Detection (LCO/GCO)—Outgoing, IncomingPT Programming Manual References[413] LCOT CPC Signal Detection Time—Outgoing[414] LCOT CPC Signal Detection Time—Incoming3.1.23 CTI (Computer Telephony Integration)DescriptionThe PBX supports a CTI interface using the LAN port of the IPCMPR/IPCEMPR card. The CTI interface allowsextension users to make or receive calls with advanced features:– Extension users can make calls easily from a phone book in their PC.62 Feature Manual Document Version 2009-123.1.23 CTI (Computer Telephony Integration)