Method for determination of proper remote feeding of communication terminals connected to a communication system

摘要

The ISDN telecommunication system (KS) is formed of a microprocessor system (MS), a switching unit (ELIC), a transmission unit (OCAT) and ISDN basic connection units (ISAC). It is linked by connecting lines (ASL) to communication terminals (KE). A terminal reset operation causes a signal to be sent to the system control if the input voltage at any terminal falls below a predetermined threshold. After manual input of procedural control information, an automatic check on all telephone terminals or a selective check on an individual terminal or gp. can be chosen.