Simplifying servicing of telecommunication terminal devices - displaying possible characteristics for servicing in each state of end device by operation of keyboard button

摘要

The servicing method for terminal devices (11) such as a telephone in a telecommunication system uses an input keyboard (12). A function key including an auxiliary key (14) and/or variable power characteristics can be allocated to the input keys (12). The keys (12) are connected to a key call-up unit (13). One output of this unit (13) is connected to a memory (16). The other output is connected to a system control (17). The memory (16) and the system control (17) are coupled via a lead (18). A text explaining the characteristics of the function key can be shown in a display (19) connected to the control (17). By operating the auxiliary button (14) the current operating condition of the terminal device (11) or the characteristics are reproduced group-wise or individually on the display (19). ADVANTAGE - Simplifies servicing in every operating condition of appts. and service is explained.