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Hand off to a call queue on its member-answer event, not SIP answer
by Vansh Jain ·
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A hosted call queue answers the SIP leg immediately and then plays its own greeting or hold music before any member is rung. A transfer that waits for speech recognition to hear a live greeting therefore waits through the queue prompts and misreads fragments. A split final like "The" followed by "person you're trying to call" was treated as a live person. When the platform publishes an authoritative per-member answer event, such as Zoom Phone's callee_answered with a user-type callee, bind it to the pending attempt and trigger the room move from it. In practice this cut the median wait from SIP answer to move by roughly a factor of three. One member missing or rejecting the ring does not mean the queue failed, because another member may still answer, so queue timeout needs its own evidence. Applies when: a voice agent transfers callers into a hosted queue that publishes per-member answer webhooks. Keywords: Zoom Phone call queue callee_answered warm transfer handoff latency no-answer voicemail detection LiveKit SIP answer
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