Abstract: A communications device according to the invention comprises a telephone set (7), which has a first control device (9) and a main data memory (8) for storing first data, and at least one data input unit (1) which can be connected to the telephone set (7) and has a second control device (3) and an auxiliary data memory (2) for storing second data which represent a part of the first data and via which the first data can be accessed. Both control devices (9, 3) are designed such that, in the event of a data change in one of the data memories, they allow a corresponding change to be made to the data assigned to them in the other data memory.

Abstract: The present invention relates to a telephone which has, on account of its many functions, a multistage menu structure for operator prompting. In order that a user does not have to remember the entire menu, or the point where he is in the menu at a given time if he pauses when operating the unit, there is specified a process for communication between the telephone and the user which, by means of a program, indicates to the user when he inputs a help signal a program branch previously selected by him and the next options available to him within this program branch. Furthermore, a voice dialling system for carrying out such a process is specified.