| |||
| calling procedure | |||
|
procedimiento de llamada : 12 phrases in 5 subjects |
| Communications | 5 |
| Electronics | 3 |
| Information technology | 2 |
| Telecommunications | 1 |
| Telegraphy | 1 |
| |||
| calling procedure | |||
|
procedimiento de llamada : 12 phrases in 5 subjects |
| Communications | 5 |
| Electronics | 3 |
| Information technology | 2 |
| Telecommunications | 1 |
| Telegraphy | 1 |