Telephone system programmable or configurable from any station - incorporates central memory accessible in different modes for selective speech link establishment or program data processing

摘要

The central office (1) is equipped with additional interfaces (26,28) for a door intercom appts. (27) and a number of relay outputs (29) and opto-coupler inputs (30) respectively. Telephone sets (16-25) with keypads and LCD displays are connected through standard interfaces (6-15) to exchange lines (4,5). Corresp. memories under electronic control can be accessed in an alternative mode for operations on programming or configuration data irrespective of the particular keypad from which such data originate in interactive working using eye-readable displays. ADVANTAGE - Capacity for programming entire installation is not restricted to specific telephone appts.