ZVEI / DZVEI / DDZVEI: Zentralverband der Electrotechnischen Industrie, West Germany. Five Tone.
Depressed ZVEI and Double Depressed ZVEI are variations of ZVEI with lower frequencies.
| Tone Number | Code Digit | ZVEI | DZEVI | DDZVEI |
| Tone 0 | 0 | 2400 Hz | 2200 Hz | 2400 Hz |
| Tone 1 | 1 | 1060 | 970 | 1060 |
| Tone 2 | 2 | 1197 | 1060 | 1160 |
| Tone 3 | 3 | 1270 | 1160 | 1270 |
| Tone 4 | 4 | 1400 | 1270 | 1400 |
| Tone 5 | 5 | 1530 | 1400 | 1530 |
| Tone 6 | 6 | 1670 | 1530 | 1670 |
| Tone 7 | 7 | 1830 | 1670 | 1830 |
| Tone 8 | 8 | 2000 | 1830 | 2000 |
| Tone 9 | 9 | 2200 | 2000 | 2200 |
| Repeat Tone | 2600 | 2400 | 970 | |
| Group Tone | 2800 | 885 | 885 | |
| Sequence Length | 350 msec | 350 msec | 350 msec | |