VAPI-3804: Add onDtmfSent callback for locally-sent DTMF tone events - #16
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Consumers previously had no way to know when a queued DTMF tone actually played on a published stream. Wire the browser's native RTCDTMFSender "tonechange" event through onDtmfSent, mirroring the existing onReady/onStreamAvailable callback pattern. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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stampercasey
approved these changes
Aug 20, 2026
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Summary
DtmfSentEvent/DtmfSentHandlertypes and anonDtmfSent(callback)registration method, following the existingonReady/onStreamAvailablepattern.RTCDTMFSendertonechangeevent so consumers are notified once per tone actually played on a published stream (the empty-tone "queue drained" event is filtered out).Test plan
tsc --noEmitpassesjest srcpasses (had to guard the newtonechangelistener withaddEventListener?.()since existingRTCDTMFSendertest mocks don't implementEventTarget)prettier --checkpassesJira: https://bandwidth-jira.atlassian.net/browse/VAPI-3804
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