Thanks — I’m responding to your question about how to “pause a call.” LiveKit does not support pausing a call in the traditional sense (there’s no built-in “pause/resume” for an active call). You can achieve a similar outcome by transferring the call to a hold line or voicemail so the participant is temporarily removed from the active session. A common approach is to perform a cold transfer using the TransferSIPParticipant API to hand the call off to a hold number (or voicemail). Key points: • Use

TransferSIPParticipant

to transfer the participant to a telephone number or SIP destination. • This performs a cold transfer (the current session ends after the transfer completes). • Your SIP trunk/provider must support SIP REFER for transfers to work. Example (Python):

# transfer the call to another number
transfer_to = "tel:+15105550123"
participant_identity = "sip_12345"

await job_ctx.api.sip.transfer_sip_participant(
    api.TransferSIPParticipantRequest(
        room_name=job_ctx.room.name,
        participant_identity=participant_identity,
        transfer_to=transfer_to,
    )
)

If you’d like, I can help with next steps — for example: • Suggesting how to set up a hold music/hold line or voicemail endpoint to transfer to. • Showing the equivalent request in another language (Node, Go, etc.). • Troubleshooting transfer failures (I’ll need the room name and participant identity plus any error messages). Which of those would you like help with? Sources: Agents telephony integration | LiveKit Documentation