| 0 | Android/iOS | Success |
| 1 | Android | RTC service not activated or service disabled |
| 2 | iOS | Network unavailable |
| 3 | iOS | Already in another call |
| 4 | iOS | Invalid operation |
| 5 | iOS | Invalid parameters |
| 6 | iOS | Unstable network |
| 7 | iOS | Media service request failed |
| 8 | iOS | Media service initialization failed |
| 9 | iOS | Media service not initialized |
| 10 | iOS | Media service request timeout |
| 11 | iOS | Unknown media service error |
| 12 | iOS | Call prohibited |
| 13 | iOS | RTC service disabled |
| 14 | iOS | Failed to publish RTC resources |
| 15 | iOS | Failed to subscribe RTC resources |
| 16 | iOS | Another device already in call |