Settings > Call Charges > Cost per Call Unit

Cost per Call Unit
You can enter up to 4 digits, for example, 6 for 6 cent.
Note: If you configure your telephone as room telephone, the value for cost per call unit should match the value configured in the PBX. Otherwise misunderstandings might occur regarding final invoice because the value configured in the PBX is used for calculating the cost of calls.
Proceed as follows:
Using COMfortel Set (page Settings/functions > Basic settings, entry field Cost per call unit (1-9999 currency subunits))

COMfortel 1400 - Firmware V2.2 - COMfortel Set V3.16 - Advanced Information V07 02/2019