At the same time, the mobile telephone configured for FMC is also given the authorisation to handle outgoing calls via the PBX. On outgoing calls, FMC acts like Call Through except that FMC is user-specific. The called person does not receive the mobile number or the central company number but the number that is also transferred from the office phone of the user.
The phone number to be transferred is configured in the exchange line routing outgoing and the according exchange line routing rule set is assigned to the user. Using the CLIP no screening function (availability on the account provided) allows a free assignment of the phone number to be transferred independently from the used connection.