The purpose of this article is to describe a new, phonocardiography-based fetal 
telemonitoring system, which, due to its passive nature, allows long-term 
measurements even at the home of the pregnant woman. The input element of the 
system was the home monitor with two sensors for recording the trans-abdominal 
fetal heart signal and the uterine contractions. The recorded signal was 
transmitted by mobile network and Internet to an Evaluation Center, where it was 
analyzed in detail to obtain information about possible dysfunction of the fetal 
heart. The investigations on this system made clear that by advanced processing 
of the recorded signal the system captured many additional cardiac features 
compared with the traditional ultrasound-based cardiotocographic procedure.