A door system and communication unit, wherein an operation of the door system is adaptable, wherein the door system has at least one at least partially automatically operated door component for carrying out at least one door function and at least one drive unit, wherein the door component is a door or a door leaf and the door component is movably mounted and wherein the drive unit is in operative connection with the door component in order to move the door component into at least one movement state to carry out the at least one door function in order to carry out a movement from a first state into a second state or vice versa, wherein the door system has a control unit for operating the door component, wherein the door system has a transmission unit for sending and/or transmitting to and/or receiving information from the communication unit, and wherein the communication unit is designed as a portable communication unit, in particular for mobile radio communication, wherein - the communication unit is configured to determine at least one item of door function information, wherein the door function information is specific to a configuration of the door function of the door system, wherein - the communication unit is configured to determine at least one drive parameter based on the door function information determined by the communication unit, such that the drive parameter is specific to a configuration specification, and/or wherein - the communication unit is configured to transmit the door function information determined by the communication unit to an evaluation unit remote from the door system, wherein the evaluation unit is configured to determine at least one drive parameter based on the door system information, such that the drive parameter is specific to a configuration specification, wherein - a movement behaviour of the door component is parameterised by the configuration specification, wherein the movement behaviour is an opening or closing speed or an opening or closing acceleration, wherein - the drive parameter comprises at least one time specification for time-dependent programming, wherein the time specification for the time-dependent programming comprises a duration of an opening time of the door component, wherein - the communication unit is configured to transmit the at least one determined drive parameter to the transmission unit of the door system via radio, in particular Bluetooth, wherein - the transmission unit is configured such that the configuration specification is provided to the control unit of the door system, and wherein - the control unit is configured to adapt the operation of the door system at least by operating the door component based on the configuration specification provided. - the communication unit is configured to determine at least one item of door function information, wherein the door function information is specific to a configuration of the door function of the door system, wherein - the communication unit is configured to determine at least one drive parameter based on the door function information determined by the communication unit, such that the drive parameter is specific to a configuration specification, and/or wherein - the communication unit is configured to transmit the door function information determined by the communication unit to an evaluation unit remote from the door system, wherein the evaluation unit is configured to determine at least one drive parameter based on the door system information, such that the drive parameter is specific to a configuration specification, wherein - a movement behaviour of the door component is parameterised by the configuration specification, wherein the movement behaviour is an opening or closing speed or an opening or closing acceleration, wherein - the drive parameter comprises at least one time specification for time-dependent programming, wherein the time specification for the time-dependent programming comprises a duration of an opening time of the door component, wherein - the communication unit is configured to transmit the at least one determined drive parameter to the transmission unit of the door system via radio, in particular Bluetooth, wherein - the transmission unit is configured such that the configuration specification is provided to the control unit of the door system, and wherein - the control unit is configured to adapt the operation of the door system at least by operating the door component based on the configuration specification provided.