 |
| |||
| Rufstrom m | |||
|
ringing current : 16 phrases in 7 subjects |
| Electronics | 1 |
| Information technology | 2 |
| Measuring instruments | 1 |
| Mechanic engineering | 1 |
| Technology | 9 |
| Telecommunications | 1 |
| Telephony | 1 |
|
| |||
| Rufstrom m | |||
|
ringing current : 16 phrases in 7 subjects |
| Electronics | 1 |
| Information technology | 2 |
| Measuring instruments | 1 |
| Mechanic engineering | 1 |
| Technology | 9 |
| Telecommunications | 1 |
| Telephony | 1 |