### Answer To diagnose why your agent is disconnecting calls unexpectedly, check the disconnection reason via the Retell Dashboard or the [get-call API endpoint]() . [(1) ]() Here are the most likely causes for your issue: 1. Inactivity timeout If there's silence during the call, the agent may end it due to the

end_call_after_silence_ms

setting. - You can adjust this in your agent configuration (default is 600000 ms / 10 minutes) . [(2) ]() 2. Max duration reached Calls terminate when

max_call_duration_ms

is reached (default is 3600000 ms / 1 hour) . [(1) ]() , [(2) ]() 3. Agent hangup without proper closing This is a known issue where agents don't properly announce call endings. To fix this, you should add an

end_call

function and explicitly instruct the AI to call that function before ending. [(3) ]() Key disconnection reasons to look for: | Reason | Description | |--------|-------------| |

inactivity

| Call ended due to silence timeout | |

max_duration_reached

| Maximum duration limit hit | |

agent_hangup

| Agent ended the call | |

error_llm_websocket_lost_connection

| LLM connection broke during call | [(1) ]() Recommended actions: 1. Check the

disconnection_reason

field in your call logs 2. Increase

end_call_after_silence_ms

if interviews have natural pauses 3. Increase

max_call_duration_ms

for longer interviews 4. Add explicit end-call instructions in your prompt with an

end_call

function [(3) ](

com/channels/1186424376300679209/1423365912215421051)

Feel free to tag @AI Evy with additional questions. I also appreciate feedback, it helps me improve.

​ To learn more, see the sources I considered: [[1] Debug call disconnection](https://docs.retellai.com/reliability/debug-call-disconnect) [[2] Update Voice Agent](https://docs.retellai.com/api-references/update-agent) [[3] Voice agent call end and function calling issues](https://discord.com/channels/1186424376300679209/1423365912215421051) ​