| Subject | English | German |
| med.appl. | frequency of the voice | Stimmfrequenz |
| commun. | international voice-frequency telegraph system | internationales WT-System |
| commun. | international voice-frequency telegraph system | internationales System der Wechselstromtelegraphie |
| tech. | multi-channel voice frequency | Vielfachtonfrequenztelegraphie |
| el. | multi-channel voice frequency telegraphy | Mehrkanalfernsprechfrequenz |
| el. | multi-channel voice-frequency radiotelegraph emission | Mehrkanalfernsprechübertragungsfrequenz |
| tech. | multichannel voice-frequency telegraph system | Mehrfach-Traegerfrequenztelegraphie mit Tonfrequenzbereich |
| el. | multi-frequency voice-frequency telegraphy | Mehrfrequenzfernsprechübertragung |
| el. | portable voice frequency measuring set | Fernmeldemesskoffer |
| telegr. | set of voice-frequency multiplex telegraph circuits | Gruppe von Wechselstromtelegrafie-Leitungen |
| commun. | single-channel voice frequency | Einkanal-Niederfrequenzverfahren (telex signalling) |
| gen. | voice frequencies | Sprechfrequenzen |
| tech. | voice frequency | Tonfrequenz |
| tech. | voice frequency | Sprachfrequenz |
| phys. | voice frequency | Hörfrequenz |
| tech. | voice frequency | Niederfrequenz |
| meas.inst. | voice frequency | Niederfrequenzfilter |
| gen. | voice frequency | Sprechfrequenz |
| commun., IT | voice frequency dialing | Tastatur zur Nummernwahl über Tonfrequenzen |
| commun., IT | voice frequency dialing | Tastatur für Tonfrequenzwahl |
| commun., IT | voice frequency dialling | Tastatur zur Nummernwahl über Tonfrequenzen |
| commun., IT | voice frequency dialling | Tastatur für Tonfrequenzwahl |
| IT | voice frequency equipment | Tonfrequenzausrüstung |
| IT | voice frequency in-band signaling | Signalgabe innerhalb des Bandes im Tonfrequenzbereich |
| IT | voice frequency in-band signalling | Signalgabe innerhalb des Bandes im Tonfrequenzbereich |
| IT | voice frequency interface | Sprachfrequenzinterface |
| IT | voice frequency interface | Analoginterface |
| IT | voice frequency interface 4-wire | analoge Vierdraht-Schnittstelle |
| IT | voice frequency interface 4-wire | Tonfrequenz-Vierdraht-Schnittstelle |
| el. | voice frequency link | Sprachfrequenzverbindung |
| commun., IT | voice frequency signal | Tonfrequenzsignal |
| IT | voice frequency signaling | Tonfrequenzsignalisierung |
| commun. | voice frequency signalling | Tonfrequenzwahl |
| IT | voice frequency signalling | Tonfrequenzsignalisierung |
| commun. | voice frequency telegraphy | Wechselstrom-Telegraphie |
| commun. | voice frequency telegraphy | Tonfrequenz-Uebertragung |
| el. | voice frequency telegraphy bearer | Sprechfunkträger |
| commun. | voice intermediate frequency module | Zwischenfrequenz-Sprachmodul |
| IT, el. | voice-band frequency | Sprachbandfrequenz |
| tel. | voice-frequency | Fernsprechfrequenz |
| commun. | voice-frequency | tonfrequent |
| tel. | voice-frequency | Sprachfrequenz |
| IT, el. | voice-frequency band | Sprechfrequenzband |
| phys. | voice-frequency band | Sprechfrequenzbereich |
| phys. | voice-frequency band | Sprachfrequenzband |
| IT, el. | voice-frequency beat | Sprechfrequenzausschlag |
| commun., IT | voice-frequency carrier telegraphy | Wechselstromtelegrafie |
| commun. | voice-frequency channel | Sprechfrequenzkanal |
| pwr.lines. | voice-frequency channel | Sprachfrequenzkanal |
| commun. | voice-frequency dialling | Tonwahl |
| commun. | voice-frequency key sending | Mehrfrequenz-Tastenwahl |
| el. | voice-frequency line signaling system | Funksystem für Sprachfrequenzverbindungen |
| el. | voice-frequency line signalling system | Funksystem für Sprachfrequenzverbindungen |
| commun., el. | voice-frequency multi-channel telegraphy | Wechselstromtelegraphie |
| IT, el. | voice-frequency multiplex | Sprechfrequenzmultiplex |
| commun., IT | voice-frequency multiplex telegraphy | Vielkanal-Telegraphie |
| telegr. | voice-frequency multiplex telegraphy | Wechselstromtelegrafie |
| tel. | voice-frequency signal | Sprachfrequenzsignal |
| telecom. | voice-frequency signaling | Tonwahl |
| commun., IT | voice-frequency signaling | Zeichengabe mit Tonfrequenz |
| telecom. | voice-frequency signaling | Signalisierung im Sprachband |
| commun., IT | voice-frequency signalling | Zeichengabe mit Tonfrequenz |
| telecom. | voice-frequency signalling | Sprachfrequenzsignalisierung |
| el. | voice-frequency telegraph emission | Sprechfunksendung |
| el. | voice-frequency telegraph signal | Sprechfunksignal |
| el. | voice-frequency telegraph tone | Sprechfunkton |
| commun. | voice-frequency telegraphy | Wechselstromtelegrafie |
| commun., IT | voice-frequency telegraphy | Tonfrequenztelegraphie |
| commun., el. | voice-frequency telegraphy | Wechselstromtelegraphie |
| el. | voice-frequency telegraphy on radio circuits | Sprechfunk über Rundfunkleitungen |
| commun. | voice-frequency telephony channel | Sprechfunkkanal |
| IT, el. | voice-frequency tone | akustische Frequenz |