The Genesis Fetal Monitor System, which includes a recorder, a communication module and a receiver system, accurately and rapidly transmits a complete antenatal fetal monitor tracing over standard telephone lines and duplicates the original tracing at the receiver center. Transmission time for a 20-minute nonstress test is less than 2 minutes. The time required to generate a duplicate strip is less than 30 seconds. In all cases in this study the original and generated tracings were superimposable. No significant technical problems were encountered. Bioelectronic fetal assessment can be performed from a nonhospital setting, including the patient's home, with immediate interpretation of the tracing by skilled consultants.