| English | eng-000 |
| voice channel | |
| 普通话 | cmn-000 | 传声管 |
| 普通话 | cmn-000 | 声频电路 |
| 普通话 | cmn-000 | 电话信道 |
| 普通话 | cmn-000 | 音频信道 |
| 普通话 | cmn-000 | 音频电路 |
| English | eng-000 | audio circuit |
| English | eng-000 | telephone channel |
| English | eng-000 | tone circuit |
| English | eng-000 | voice frequency channel |
| English | eng-000 | voice grade circuit |
| English | eng-000 | voice-frequency circuit |
| English | eng-000 | voice-grade channel |
| hrvatski | hrv-000 | glasovni kanal |
| hrvatski | hrv-000 | govorni kanal |
| русский | rus-000 | канал тональной частоты |
| русский | rus-000 | речевой канал |
| русский | rus-000 | телефонный канал |