# Call Transfer Failures

- Provider: [Retell AI](https://down.guide/providers/retell)
- Confidence: Confirmed
- Impact: Degraded
- lasted 1h 14m
- started 2025-05-20 00:33 UTC
- Phone Call
- id: DWN-6216d4afdf
- Official page: https://stspg.io/fbt9r3vx2476

## Updates from Retell AI
### 2025-05-20 00:33 UTC: monitoring
Due to a technical issue, some calls experienced failures when performing cold transfers with agent numbers or warm transfers. This led to unexpected call drop-offs during transfer attempts.
A fix is currently being deployed to resolve the issue.
Impact window: May 19, 1:44 PM PDT – ongoing

### 2025-05-20 01:47 UTC: resolved
This incident has been resolved. We are working internally to add more test cases to prevent this from happening.

From the builder: does your app depend on Retell AI? [Sazabi](https://www.sazabi.com/?utm_source=down-guide&utm_medium=markdown&utm_content=retell) detects problems in your own logs without hand-written monitors, and you can ask it in plain language which errors mention Retell AI.

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