# Twilio: Voice Call Audio Quality Degradation, Silent and One-Way Audio between Twilio and Multiple Networks in United Kingdom

> Twilio voice calls had audio quality degradation, silent audio, and one-way audio between Twilio and network subscribers on multiple networks in the United Kingdom. The affected components were Voice, Europe and CARRIER NETWORK - Voice, Europe. Twilio reports that the incident is resolved, and it lasted about 5 hours and 19 minutes.

- Provider: [Twilio](https://outages.live/twilio.md)
- Type: Incident
- State: Resolved
- Worst impact: Degraded performance
- Started: 2026-11-09 16:34 UTC
- Resolved: 2026-11-09 21:52 UTC (lasted 5 h 19 min)
- Components: Voice, Europe, CARRIER NETWORK - Voice, Europe
- Official update: https://stspg.io/2rrsyptxpyqb

## Updates from Twilio

### resolved, 2026-11-09 21:52 UTC

The incident has been resolved and voice calls between Twilio and network subscribers on affected networks in the United Kingdom are operating normally.

### monitoring, 2026-11-09 19:54 UTC

We have observed a recovery in voice calls between a subset of Twilio Phone Numbers and network subscribers on multiple networks in the United Kingdom and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.

### identified, 2026-11-09 19:51 UTC

Twilio customers may be experiencing voice call audio quality degradation and silent and one-way audio between Twilio Phone Numbers and network subscribers on multiple networks in the United Kingdom. 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.

### identified, 2026-11-09 17:48 UTC

Twilio customers may be experiencing voice call audio quality degradation, silent and one-way audio between Twilio and network subscribers on multiple networks in the United Kingdom. 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.

### identified, 2026-11-09 16:51 UTC

Twilio customers may be experiencing voice call audio quality degradation, silent and one-way audio between a subset of Twilio Phone Numbers and network subscribers on multiple networks in the United Kingdom of Great Britain and Northern Ireland. 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.

### identified, 2026-11-09 16:48 UTC

Twilio customers may be experiencing voice call audio quality degradation and silent and one-way audio between a subset of Twilio Phone Numbers and network subscribers on multiple networks in the United Kingdom of Great Britain and Northern Ireland. 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.

### investigating, 2026-11-09 16:36 UTC

Twilio customers may be experiencing voice call silent and one-way audio between a subset of Twilio Phone Numbers and network subscribers on multiple networks in the United Kingdom of Great Britain and Northern Ireland. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.