Features489System functions and features as of R3.0syd-0367/1.3 – R3.0 – 03.20139. 6. 26. 2 FunctionsRoom monitoring is activated on the monitoring cordless phone A:Tab. 301 Active and passive room monitoring: Functions9. 6. 26. 3 Active room monitoringWhen activating room monitoring the user specifies whether the call connectionshould be one-way (mode 1) or two-way (mode 2). One-way means that only thetransmission path of the monitoring phone is switched through; with a two-waycall connection the reception path is also switched through (in hands-free mode).The duration of the call connection is limited to 1 minute.As an option the user can specify the microphone’s noise sensitivity level for trig-gering the call:• Level 1: low sensitivity (high noise level required)• Level 2: average sensitivity (average noise level required)• Level 3: high sensitivity (low noise level required)If no level is indicated, the value last selected is used.The appropriate level has to be determined empirically on site.The microphone used for room monitoring is switched on with a 10 second timelag (Office 135). On cordless phones of the Aastra 600d series the delay is config-urable (10, 20 or 30 s). The time lag allows the user to position the cordless phoneand then leave the room.Functions Function codesActivating room monitoringx = mode [1...3] 1)y = level [1...3] 2)(optional)1) x = 1: Active room monitoring with a one-way call connection.x = 2: Active room monitoring with a two-way call connection.x = 3: Passive room monitoring2) y: Sensitivity to noise (1: low, 2: average, 3: high, default value: 2)*25 x [* y] #Cancelling room monitoring #25 or using