| Subject | English | German |
| commun., IT | digital multi-level frequency hopping technique | digitales Mehrebene-Frequenz-hopping |
| gen. | dual tone multi frequency | Mehrfrequenzverfahren |
| gen. | dual tone multi frequency | Zweitonmehrfrequenzwahlverfahren |
| gen. | dual tone multi frequency | MFV-Verfahren |
| IT, nat.sc. | dual tone multi-frequency | Doppel-Ton-Multifrequenz-Generator |
| commun. | dual tone multi-frequency DTMF; dialling method | Multifrequenzwählverfahren (CCITT Yellow Book Vol. VI. 1 Recommendation Q.23) |
| commun. | dual tone multi-frequency DTMF; dialling method | Multifrequenzverfahren (CCITT Yellow Book Vol. VI. 1 Recommendation Q.23) |
| commun. | dual tone multi-frequency operation | DTMF-BetriebMehrfrequenzverfahren |
| commun. | dual-tone multi-frequency dialling | Mehrfrequenz-Wahl |
| IT, nat.sc. | dual-tone multi-frequency generator | Doppel-Ton-Multifrequenz-Generator |
| commun. | dual-tone multi-frequency DTMF method | Mehrfrequenz-Verfahren |
| commun. | frequency-modulated multi-channel telephony | FM-Mehrkanal-Telefon |
| el. | multi-channel frequency-division emission | Mehrkanalsendung mit Frequenzaufteilung |
| el. | multi-channel frequency-division system | Mehrkanalsystem mit Frequenzaufteilung |
| tech. | multi-channel voice frequency | Vielfachtonfrequenztelegraphie |
| el. | multi-channel voice frequency telegraphy | Mehrkanalfernsprechfrequenz |
| el. | multi-channel voice-frequency radiotelegraph emission | Mehrkanalfernsprechübertragungsfrequenz |
| transp., environ., el. | multi-frequency | Mehrfrequenz |
| commun. | multi-frequency | Frequenzmultiplex |
| commun., IT | multi-frequency check | Mehrfrequenzprüfung |
| commun. | multi-frequency coding | Mehrfrequenzcode-Verfahren |
| commun. | multi-frequency coding | Mehrfrequenz-Codewahl |
| gen. | multi-frequency cross-Channel network | Mehrfrequenzmeßnetz über den Ärmelkanal |
| telecom. | multi-frequency dialing | Multifrequenzverfahren |
| telecom. | multi-frequency dialing | Mehrfrequenzwahlverfahren |
| IT, el. | multi-frequency generator card | Multi-Frequency-Generator-Card |
| IT, el. | multi-frequency generator card | Multifrequenzgenerator-Karte |
| IT, el. | multi-frequency receiver card | Multi-Frequency-Receiver-Card |
| IT, el. | multi-frequency receiver card | Multifrequenzempfänger-Karte |
| tech. | multi-frequency ringing generator | Mehrfrequenz-Rufgenerator |
| el. | multi-frequency-shift-keying technique | Mehrfrequenzumtastung |
| tech. | multi-frequency signal | Mehrfrequenzsignal |
| el. | multi-frequency signaling system | Mehrfrequenzsignalisierungssystem |
| telecom. | multi-frequency signalling | Mehrfrequenzsignalisierung |
| el. | multi-frequency signalling system | Mehrfrequenzsignalisierungssystem |
| el. | multi-frequency tone signal | Mehrfrequenztonsignal |
| commun. | multi-frequency transmitter | Sender mit voreingestellten Frequenzen |
| el. | multi-frequency voice-frequency telegraphy | Mehrfrequenzfernsprechübertragung |
| commun., el. | voice-frequency multi-channel telegraphy | Wechselstromtelegraphie |