Settings > Display > Function Key for the Idle State (Sleep) > By pressing the key you immediately enable the power management function and the phone immediately goes into sleep mode.
By pressing the key you immediately enable the power management function and the phone immediately goes into sleep mode.
Notes:
If the extended power management function is set, it will be turned on together with the power management function ( > Settings > Device > Display > More > Extended power management function).
As the function key LEDs are switched off in the extended power management function, you cannot determine the status of functions using the function key LEDs.
 
Proceed as follows by assigning the function key:
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Using the Configuration Manager by selecting Power management function
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Using the telephone by selecting Power management function
Note:
The function can only be assigned to a programmable function key that has an LED (not on a touch function key).
For further information about the general procedures when assigning function keys, see Function Keys.
 
COMfortel 1400 IP/2600 IP/3600 IP - Firmware V2.8 - Advanced Information V10 05/2025