Monitoring Another Extension (Call Monitor)The preprogrammed extension can monitor another extension. After pressing a DSS button, you can checkthe caller information of the call to another extension on the display. Then, you can choose to monitor the call,if necessary.To monitorPT/SLT/PSEnter 5.5Off-hook.C.ToneMonitoring startsB. TonePress red DSS, PDN, or SDN, or dial extension number.extension no.(SDN)OROR(PDN)OR(DSS)A busy tone is heard and the callerinformation of the call to anotherextension is displayed.• SIP phone users cannot use this feature, but they can be monitored by other extensions.To an Extension Refusing the Call (DND Override)The preprogrammed extension can call someone who has set the DND feature.Enter 1.PT/SLT/PSTalk.R.B.Tone1extension no.Dial extensionnumber.DND ToneOff-hook.• SIP phone users cannot use DND Override to call someone who has set the DND feature,but can let other extensions call them using DND Override when the DND feature is set.User Manual 491.2.4 When the Dialled Line is Busy or There is No Answer