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feat(api): add SIP DTMF commands and delivery events - #4208
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Castiron-Internal-PR: openai/openai-python-internal#377 Castiron-Source-SHA: fec8d9356a017e721de8086955d4cd1dcd3188e5 Castiron-Public-Base-SHA: 3ee373e
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dpiet-oai
approved these changes
Oct 29, 2026
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Summary
Adds typed SIP sideband keypress commands and delivery confirmations while preserving legacy notification types.
Changes
The
transport.dtmf.sendcommand is available for SIP sideband connections. Successful sends producetransport.dtmf.sentacknowledgements. Legacy SDK notification types and historical event decoding remain available, while the server acknowledgement now usestransport.dtmf.sent.