Hello all, I have searched the net, but I can't find a clear explanation of what the "presume-ack" option available in socket-can is. Some PEAK-System devices offer an option called "self-ack" which allows the controller sending the frame to also send the ACK itself. Does this behavior correspond to what the "presume-ack" option should enable? Thank you all for your help and regards, -- Stephane -- PEAK-System Technik GmbH Sitz der Gesellschaft Darmstadt - HRB 9183 Geschaeftsfuehrung: Alexander Gach / Uwe Wilhelm Unsere Datenschutzerklaerung mit wichtigen Hinweisen zur Behandlung personenbezogener Daten finden Sie unter www.peak-system.com/Datenschutz.483.0.html