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SendGrid: Voice Call Silent and One-Way Audio from Gamma United Kingdom to a Subset of Twilio United Kingdom Phone Numbers

Affected components: CARRIER NETWORK - Voice, EuropeVoice, Europe

Timeline of updates

1. investigating2026-10-16 09:37 UTC

   Twilio customers may be experiencing voice call silent and one-way audio from Gamma network subscribers in the United Kingdom to Twilio United Kingdom Phone Numbers. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.

2. investigating2026-10-16 09:53 UTC

   Twilio customers may be experiencing silent calls and one-way audio from network subscribers in the United Kingdom to Twilio United Kingdom phone numbers. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.

3. investigating2026-10-16 10:38 UTC

   Twilio customers may be experiencing voice call silent and one-way audio from network subscribers in the United Kingdom to Twilio United Kingdom Phone Numbers. Our team is actively investigating this issue. We will provide another update in 2 hours or as soon as more information becomes available.

4. monitoring2026-10-16 13:55 UTC

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

5. resolved2026-10-16 15:58 UTC

   The incident has been resolved and voice calls from Gamma network subscribers in the United Kingdom to a subset of Twilio United Kingdom Phone Numbers are operating normally.

Impact, status and times are the vendor’s own, as last archived. View on stspg.io (opens in new tab). SendGrid profile · Recent SendGrid incidents · Markdown · JSON