| |||
| signal vocal | |||
| |||
| signal téléphonique; signal audiofréquence | |||
|
voice-frequency : 67 phrases in 12 subjects |
| Aviation | 1 |
| Communications | 27 |
| Electronics | 12 |
| General | 1 |
| Information technology | 14 |
| Law | 1 |
| Medical appliances | 1 |
| Natural sciences | 1 |
| Power lines | 2 |
| Telecommunications | 4 |
| Telegraphy | 1 |
| Telephony | 2 |