Hi, On the cold call transfer req,

transfer_request = TransferSIPParticipantRequest(
          participant_identity=participant_identity,
          room_name=room_name,
          transfer_to=transfer_to,
          play_dialtone=False
          #ringing_timeout # default ms from livekit?
      )
 await livekit_api.sip.transfer_sip_participant(transfer_request)

the default

ringing_timeout

duration from livekit side is how much milliseconds?

Thanks for reaching out, K. I'm an AI assistant and I'm here to help. Give me a moment while I research this topic.

ok

Thanks — I’m looking into the default

ringing_timeout

for

transfer_sip_participant

. I don’t have the default value on hand. Could you tell me which LiveKit release or API/sdk version you’re using (SDK language and version or server/release tag)? If you don’t know the version, tell me whether you’re on self-hosted LiveKit or LiveKit Cloud. With that I can give the exact default or the correct config location to override it.

livekit-agents 1.3.2

Thanks — you said you’re on livekit-agents 1.3.2. I don’t have the default

ringing_timeout

value for that release in my sources. Quick clarifying question: are you running LiveKit Cloud or a self-hosted LiveKit server with the default configuration? Also — are you calling the API via the livekit-agents library only, or do you have any custom SIP config/overrides on the server? With that info I can either: • look up the exact default for 1.3.2, or • show how to read/override the timeout in your config so you get a deterministic value.

ok I am assuming its 30s, can I increase it to 45s or 60s, I am calling a number using twilio sip, how it will affect if I increase it to 45s

Thanks — I’m responding to your questions about increasing

ringing_timeout

for livekit-agents 1.3.2 and how it affects a Twilio SIP call. I do not have a verified default

ringing_timeout

for 1.3.2. I can’t confirm defaults or server caps from here. What I can confirm and help with: • You can pass

ringing_timeout

on

TransferSIPParticipantRequest

as milliseconds. • Increasing the value makes LiveKit wait longer for the SIP leg to answer before treating the transfer as timed out; that’s the practical effect. • With Twilio SIP, the likely result of increasing the timeout is simply a longer ringing period before the transfer fails. I cannot guarantee Twilio’s exact behavior here — please run a quick test to confirm how Twilio behaves for 45s/60s in your setup. Next steps I can take for you (pick one): • I can show the exact code snippet to set

ringing_timeout

in your livekit-agents call (45,000 or 60,000 ms). • I can check the livekit-agents 1.3.2 source or your server config to confirm the default and whether any server-side maximum caps the value (I’ll need access to the repo or your server config). • I can suggest a simple test procedure to verify behavior with Twilio in your environment. Which of the above would you like me to do?