Electronic extension on which the functions clock, voice announcement, display control and RS232 interface are included:
- Real time clock for time-controlled telephone and switching functions (eg: door opener).
- Voice announcement: Welcome and Information for announcements up when a call button or as to location identification for a call.
- Display control: the operation of the display modules. Phonebook with 199 entries for function and variable Welcome and information texts.
- RS232 interface: for the configuration of texts and phone book entries of the display via PC. The necessary software can be found at www.behnke-online.com.