Abstract: A method and an apparatus provide safe access control without the need for supplementary devices. By entering audible words or sounds during a playing of a text of a recorded announcement, a first personal access code based on both the audible uttering and the timing of the audible uttering is generated and stored for authorized users. Subsequently, a second personal access code is generated in the same way when access is sought by a subsequent user seeking access to the facility. The second personal access code is compared with the first personal access code. If the codes correspond in both terms of the audible uttering and the timing of the audible uttering, access is permitted. High security is provided which prevents unauthorized use. The apparatus has a low cost and a low complexity, because no supplementary devices are necessary.

Abstract: The operation and control of devices is made possible by a portable unit. Operation and control of devices, particularly telephone installations is a means of speech via a portable voice module. A portable voice module contains a digital signal processor (DSP), a memory (S), an analog-digital/digital-analog converter (AD/DA), an analog interface (ANALOG I/O), a computer interface (PORT) and a digital interface (DIGITAL I/O). A telephone installation consists of the portable voice module and a telephone device, which is composed of basic units and interfaces.