# Retell AI: Call Transfer Failures

- Impact (vendor’s label): minor
- Status: resolved
- Started: 2025-05-20 00:33 UTC · Resolved: 2025-05-20 01:47 UTC · Duration: 1.2 h
- Updates: 2 · Affected components: End to End Calling - Telephony, Phone Call
- [Vendor status page: https://stspg.io/fbt9r3vx2476](https://stspg.io/fbt9r3vx2476)
- [Company: Retell AI](https://rewindex.com/company/retell-ai.md)

## Timeline of updates

- **monitoring** 2025-05-20 00:33 UTC: 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
- **resolved** 2025-05-20 01:47 UTC: This incident has been resolved. We are working internally to add more test cases to prevent this from happening.


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Canonical: https://rewindex.com/company/retell-ai/incidents/tmpt9v92ny93 · Markdown: https://rewindex.com/company/retell-ai/incidents/tmpt9v92ny93.md · JSON: https://rewindex.com/api/v1/companies/retell-ai/incidents/tmpt9v92ny93 · Generated 2026-10-20T03:13:45.211Z