• For PT users: The CO or INTERCOM button light shows the current status as follows:– Regular Hold modeFlashing green slowly: Your held callFlashing red: Another extension’s held call– Exclusive Call Hold modeFlashing green moderately: Your held callRed on: Another extension’s held call• For KX-UT133/KX-UT136/KX-UT248/KX-UT670 SIP phone users: The S-CO button lightshows the current status as follows:– Regular Hold modeFlashing green slowly: Your held callFlashing red: Another extension’s held call• If a call is not retrieved within a specified time, you will hear an alarm as a reminder (HoldRecall).If an outside call is not answered within a specified time, it is automatically disconnected.• Hold Mode Change (PT only)After pressing the HOLD button, if you press the HOLD button again, the status switchesfrom the Regular Hold mode to the Exclusive Call Hold mode or from the Exclusive Call Holdmode to the Regular Hold mode.• If Automatic Call Hold has been preprogrammed, you can put the current call on holdautomatically by pressing another CO, ICD Group, INTERCOM, or DN button to make oranswer another call.• For the Call Hold Retrieve operation using a PDN/SDN button, refer to "1.3.50 PDN (PrimaryDirectory Number)/SDN (Secondary Directory Number) Extension".1.3.7 Call MonitorA preprogrammed extension user can listen to the ongoing conversation of a busy extension user.To monitorPT/SLT/PSEnter 5.5Press red DSS, PDN, or SDN,or dial extension number.B.ToneOff-hook.C.ToneMonitoring startsextension no.(DSS)(SDN)OROR(PDN)OR• SIP phone users cannot use this feature, but they can be monitored by other extensions.Document Version 2013-04 Operating Manual 451.3.7 Call Monitor