| English | eng-000 |
| engaged tone | |
| 普通话 | cmn-000 | 占线信号 |
| 普通话 | cmn-000 | 占线音 |
| 普通话 | cmn-000 | 忙音 |
| 國語 | cmn-001 | 佔線音 |
| Deutsch | deu-000 | Besetztzeichen |
| eesti | ekk-000 | kinnine toon |
| English | eng-000 | busy back signal |
| English | eng-000 | busy signal |
| English | eng-000 | busy tone |
| English | eng-000 | busy tone signal |
| English | eng-000 | busy-back tone |
| English | eng-000 | engaged signal |
| English | eng-000 | tone signal |
| русский | rus-000 | тональный сигнал готовности |
| русский | rus-000 | тональный сигнал занятости |