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        Issue Causing Distorted Ringback Tones on TwiML Dial Calls

        Incident Report for Twilio

        Resolved

        We are no longer experiencing loud and distorted ringing tones in voice calls using TwiML Dial. This incident has been resolved.
        Posted Oct 04, 2025 - 02:31 PDT

        Monitoring

        We have mitigated the issue that caused loud and distorted ringing tones in some voice calls using TwiML Dial. We are monitoring the system and expect to provide another update within 30 minutes or as soon as more information becomes available.
        Posted Oct 04, 2025 - 02:00 PDT

        Identified

        We have identified an issue which caused loud and distorted ringing tones are heard in some voice calls with TwiML Dial. We are implementing mitigations and expect to provide another update in 2 hours or as soon as more information becomes available.
        Posted Oct 04, 2025 - 01:44 PDT

        Update

        We are investigating an issue where loud and distorted ringing tones are heard in some voice calls with TwiML Dial. We expect to provide another update in 1 hour or as soon as more information becomes available.
        Posted Oct 04, 2025 - 00:50 PDT

        Investigating

        Our engineers are currently investigating the customer impact of a retroactive issue with Abnormal ringing tone on JS SDK Clients. We will follow up and provide customer impact details within 2 hours.
        Posted Oct 03, 2025 - 23:43 PDT
        This incident affected: PROGRAMMABLE VOICE (TwiML).