### Answer To check for current service disruptions, subscribe to Retell's [Status Page]() for real-time notifications about any issues. [(1) ]() Retell guarantees >99.9% uptime, but if your agent isn't picking up, here are some things to check: Common troubleshooting steps: - Check your telephony configuration – If using custom telephony/SIP trunking, verify your termination and origination URIs are correctly configured. [(2) ]() - Verify agent binding – Ensure your phone number is properly imported and bound to the correct agent. Without this, Retell cannot route inbound calls to your agent. [(3) ]() - Review call logs – Check the detailed call logs in your dashboard for any disconnection reasons or error codes. Common issues include

telephony_provider_unavailable

or SIP errors. [(4) ]() Possible disconnection reasons to look for: -

dial_failed

-

telephony_provider_unavailable

-

sip_routing_error

-

error_no_audio_received

If the Status Page shows no issues and your configuration looks correct, check with your telephony provider for any errors on their end. [(5) ]()

​ To learn more, see the sources I considered: [[1] Reliability Overview](https://docs.retellai.com/reliability/reliability-overview) [[2] AI in SIP Calling & Telephony Solutions | Retell AI](https://www.retellai.com/blog/integrating-ai-with-sip-trunking-and-modern-telephony) [[3] I need to receive calls using 3cx as telephony system](https://community.retellai.com/t/i-need-to-receive-calls-using-3cx-as-telephony-system/435) [[4] Register Phone Call](https://docs.retellai.com/api-references/register-phone-call) [[5] Not being able to transfer a call](https://community.retellai.com/t/not-being-able-to-transfer-a-call/225) ​

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