Hello everyone, thanks for taking the time to read my question. About 20% of the time, our MFP M525 will fail to receive a fax . It is an intermittent error, the receive duration varies, the time of day varies and the frequency varies. When it fails an error shows up in the Event Log of the printer: failed(70) . I can't find on online resource that will tell me what the 70 stands for, does anyone know? Or failing that, does anyone have an idea about what would cause receiving to fail intermittently? I have replaced it with an older Brother fax machine and it doesn't have problems receiving, so I know it's the machine and not the line.