### Answer I don't have real-time access to Retell's server status. To check if there's an outage, visit the official status page: [) [(1) ]() If calls are failing, check the disconnection_reason in your call history or via the [get-call API]() . [(2) ]() Common disconnection reasons for failed calls include: -

dial_no_answer

– The number dialed did not answer -

dial_failed

– Dialing failed with no or unknown SIP error code -

telephony_provider_unavailable

– The telephony provider is unavailable If you're seeing

dial_failed

frequently, note that phone numbers with high short-call volume may get marked as spam at the carrier level, leading to blocks. For troubleshooting: 1. Check the call history detailed log for the disconnection reason and SIP error code [(3) ]() 2. If using custom telephony, verify your configuration and check with your provider 3. If using Retell-purchased numbers, ensure the destination can accept calls

​ To learn more, see the sources I considered: [[1] Is Retell down?? I'm getting "dial_no_answer" for all my calls](https://discord.com/channels/1186424376300679209/1338164276057083904) [[2] Debug call disconnection](https://docs.retellai.com/reliability/debug-call-disconnect) [[3] Debug outbound connection issues](https://docs.retellai.com/reliability/debug-outbound-call) ​

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