 |
| |||
| Zeicheneinheit f (SS7 MTP frame) | |||
| Signaleinheit f | |||
| Signalisierungseinheit f; Zeichengabeeinheit f | |||
| signal unit: 61 phrases in 9 subjects |
| Communications | 8 |
| Electronics | 23 |
| General | 2 |
| Information technology | 4 |
| Measuring instruments | 2 |
| Rail transport | 2 |
| Technology | 4 |
| Telecommunications | 12 |
| Transport | 4 |