| русский | rus-000 |
| тональное телеграфирование | |
| English | eng-000 | VFT |
| English | eng-000 | carrier telegraphy |
| English | eng-000 | frequency signaling |
| English | eng-000 | harmonic signaling |
| English | eng-000 | harmonic telegraphy |
| English | eng-000 | in-band signaling |
| English | eng-000 | tone telegraphy |
| English | eng-000 | voice-frequency telegraphy |