The Xerox 400 Telecopier and the fetal monitor.
D003201:Computers; D003308:Copying Processes; D004562:Electrocardiography; D005260:Female; D005318:Fetal Heart / Q000502:physiology*; D006801:Humans; D007362:Intensive Care Units; D008722:Methods; D003629:Modems; D008991:Monitoring, Physiologic; D011247:Pregnancy; D011296:Prenatal Diagnosis; D012017:Referral and Consultation; D013689:Telephone