Voice Call Failures from a Subset of Twilio Phone Numbers to T-Mobile United States

Final update

Twilio customers may be experiencing voice call failures from a subset of Twilio Phone Numbers to T-Mobile network subscribers in the United States. 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.

1. Identified · Oct 29, 02:58 UTC
   Twilio customers may be experiencing voice call failures from a subset of Twilio Phone Numbers to T-Mobile network subscribers in the United States. 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.
2. Monitoring · Oct 29, 01:45 UTC
   We have observed a recovery in voice calls from a subset of Twilio Phone Numbers to T-Mobile network subscribers in the United States and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
3. Identified · Oct 29, 01:43 UTC
   Twilio customers may be experiencing voice call failures from a subset of Twilio Phone Numbers to T-Mobile network subscribers in the United States. 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.
4. Investigating · Oct 29, 01:34 UTC
   Twilio customers may be experiencing voice call failures from a subset of Twilio Phone Numbers to network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.