European Digital Cellular Telecommunications System (Phase 2); Attachment Requirements for Global System for Mobile Communications (GSM) Mobile Stations
Universal Personal Telecommunication (UPT) - UPT Phase 2 - Functional Specification of the Interface of a UPT Integrated Circuit Card (ICC) and Card Accepting Devices (CADs) - UPT Card Accepting Dual Tone Multiple Frequency (DTMF) Device
ANSI/IEEE Radio Interference: Methods of Measurement of Conducted Interference Output to the Power Line from FM and Television Broadcast Receivers in the Range of 300 kHz to 25 MHz