The PBX supports the connection and control of various types of relays. A relay can be part of a connected door terminal or another connected device (e.g. an IP switch relay). Relays can have various functions on the PBX.
Note: The internal system relay with the identification number 900 (factory setting) has a special position. It can only be used in the operating type automatic configuration switchover to switch it on or off via phone. For this purpose, the relay is being switched on or off.