Conventional Systems Technical Manual - Alcad

DIRECT CONNECTIONS BETWEEN THE PANELS OF THE DIFFERENT POINTS OFENTRYTo simplify matters in installations where there are several points of entry or in housing estates, control of the different points ofentry is handled directly by the entrance panels, thanks to the microprocessor and to the electronics built into the audio units. In thistype of installation is unnecessary to use any additional device to perform this function (e.g. change-over switches).To the connections between panels in the 4+N system - connections which are necessary to enable communication with dwellingsfrom any of the entrance panels - only two other wires need be added for the control of the different points of entry.5LAST FLOOR5GROUND FLOORTELEPHONE INTHE DWELLING4+N42NENTRANCE PANELENTRANCE PANELWIRES BETWEENTHE PANELSNumber of wires42NDescriptionLock release, ascending audio, descending audio and commonControl signal (several points of entry)Transmission of the call for each dwelling7