Office of telecommunications policy proposed biomedical telemetry standard for emergency medical communications march 1975

This standard defines the minimum requirements for a multiplex or nonmultiplex voice/telemetry channel to assure compatibility and interoperability of portable physiologic monitoring equipment with both radio and telephone equipments and hospital emergency and display devices. Specifically, it defines a National telemetry subcarrier frequency within the voice band which is compatible with both radio and telephone transmission characteristics. This standard applies only to voice and telemetry modulation-demodulation electronic instrumentation used in emergency medical care.