Call systems according to DIN VDE 0834 and IP networking

Leaflet 33021:2023-09 E

This explanatory document describes the potential risks associated with the use of IT infrastructures external to the system when the current DIN VDE 0834 standard is not observed.

Call systems for alarm signalling are designed to help people who are unable to help themselves, especially in emergency situations, and to save lives and avert danger. For this purpose, DIN VDE 0834 requires these systems to have a conductor and transmission network of their own, independent of external systems and monitored and controlled by the equipment of the call system. The call function must have the highest priority and be assured at all times.

DIN VDE 0834 prohibits transmission routes of other systems being used by call systems. Transmission routes of external systems may be used between organization groups and external services only if it is ensured by continuous risk management that the requirements of DIN VDE 0834 are met. Within the organization groups of the call system, no transmission routes other than those of the call system itself may be used.

Where the call system uses the building's wiring structure, the following must be observed:

  • Specifications in standards (DIN VDE 0834 and EN 50173), in particular for the use of transmission routes external to the call system, must be observed, as must the specifications of the respective manufacturers regarding cable types, conductor cross-sections and cable lengths.
  • Particular attention must be paid to clear labelling of junction boxes, patch cables and patch panels, to ensure that they can be assigned to the call system unambiguously and permanently.

The following must be observed when active network components are used:

  • Only devices approved by the call system manufacturer may be used.
  • These devices may be used solely for the call system. They must be clearly labelled as being components of the call system.
  • Protective separation to EN 60601-1 with 2x MOPP: the devices must be connected to the supply voltage by a dedicated circuit with its own protection. This circuit is to be used solely for devices of the call system and must be operated in accordance with DIN VDE 0834, 5.2.2 with emergency power and protective separation.


Download of the Leaflet in German

Buildings Installers‘ and Planners‘ Consortium Call systems according to DIN VDE 0834 Safety / Security / Defence Manual

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