# Voice Call Failures from Twilio Phone Numbers to Telcel/Radiomovil Mexico

- Provider: [Twilio](https://down.guide/twilio)
- Level: confirmed
- Impact: Degraded
- lasted 1d 22h
- started 2026-03-24 00:12 UTC
- Voice, North America
- us
- id: DWN-698dfcb0ee
- Official page: https://stspg.io/m178kfhjr8tz

## Updates from Twilio
### 2026-03-24 00:12 UTC: investigating
Our monitoring systems have detected a potential issue with outbound calls to Mexico, resulting in a SIP 484. Our engineers have been alerted and are investigating. We will provide an update when we have more details.

### 2026-03-24 00:50 UTC: investigating
We are observing call failures from a subset of Twilio phone numbers to multiple network subscribers in Mexico. We are currently working with our carrier partners to resolve the issue. We expect to provide another update in 1 hour or as soon as more information becomes available.

### 2026-03-24 01:30 UTC: identified
Twilio customers may be experiencing voice call failures from Twilio Phone Numbers to network subscribers in Mexico. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.

### 2026-03-24 02:27 UTC: identified
Twilio customers may be experiencing voice call failures from Twilio Phone Numbers to Telcel/Radiomovil network subscribers in Mexico. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.

### 2026-03-24 04:46 UTC: identified
Twilio customers may be experiencing voice call failures from Twilio Phone Numbers to Telcel/Radiomovil network subscribers in Mexico. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.

### 2026-03-24 08:40 UTC: identified
Twilio customers may be experiencing voice call failures from Twilio Phone Numbers to Telcel/Radiomovil network subscribers in Mexico. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.

### 2026-03-24 16:33 UTC: identified
Twilio customers may be experiencing voice call failures from Twilio Phone Numbers to Telcel/Radiomovil network subscribers in Mexico. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 16 hours or as soon as more information becomes available.

### 2026-03-25 08:19 UTC: identified
Twilio customers may be experiencing voice call failures from Twilio Phone Numbers to Telcel/Radiomovil network subscribers in Mexico. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 24 hours or as soon as more information becomes available.

### 2026-03-25 16:41 UTC: monitoring
We have observed a recovery in voice calls from Twilio Phone Numbers to Telcel network subscribers in Mexico and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.

### 2026-03-25 19:00 UTC: monitoring
We have observed a recovery in voice calls from Twilio Phone Numbers to Telcel network subscribers in Mexico and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.

### 2026-03-25 22:46 UTC: monitoring
The incident has been resolved and voice calls from Twilio Phone Numbers to Telcel network subscribers in Mexico are operating normally.

### 2026-03-25 22:46 UTC: resolved
This incident has been resolved.

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