carrier-class
Internet provider
| carrier class | |
| telecom. | 公用电信网级别; 电信级; 运营级 |
| |||
| 公用电信网级别; 电信级; 运营级 | |||
|
carrier-class : 10 phrases in 7 subjects |
| Air defense | 1 |
| Computer networks | 1 |
| Electronics | 1 |
| International trade | 2 |
| Nautical | 1 |
| Technology | 1 |
| Telecommunications | 3 |