how can i disconnect an sip call after a fixed max call duration. how can i provide max call duration to agent?

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i only creating dispatch rule and sip trunk but not a sip participant. my code -

lk_api = livekit_api.LiveKitAPI()
    # create a Dispatch Rule on livekit for the phone number
    agent_name = settings.AGENT_WORKER_AGENT_NAME

    dispatch_rule = livekit_api.SIPDispatchRule(
        dispatch_rule_individual=livekit_api.SIPDispatchRuleIndividual(
            room_prefix="assistant-",
        )
    )
    dispatch_rule_name = f"Inbound Agent Calling Dispatch Rule for {phone_num}"
    agent_to_dispatch = livekit_api.RoomAgentDispatch(
        agent_name=agent_name,
        metadata=str(assistant_id),
    )
    room_config = livekit_api.RoomConfiguration(agents=[agent_to_dispatch])
    sip_dispatch_rule_info = livekit_api.SIPDispatchRuleInfo(
        rule=dispatch_rule,
        room_config=room_config,
        name=dispatch_rule_name,
        trunk_ids=[sip_trunk_id],
    )
    dispatch_rule_request = livekit_api.CreateSIPDispatchRuleRequest(dispatch_rule=sip_dispatch_rule_info)

Hey there! If you want to set a maximum call duration when using SIP dispatch rules and trunks, here’s a simple way to do it: 1. Set Max Call Duration on SIP Trunks: When you create SIP inbound trunks, just fill in the

max_call_duration

field. This makes sure all calls going through that trunk stick to the time limit you set. 2. Dispatch Rule Evaluation: While SIP dispatch rules don’t have a

max_call_duration

field themselves, they can actually inherit this limit from the trunk they’re linked to. So, by connecting dispatch rules with trunks that have a

max_call_duration

, you’re in control of call lengths. 3. Global Maximum: Just a heads up, LiveKit has a hard cap of 24 hours for call duration — that one can’t be changed. In your code, just make sure the trunk tied to your dispatch rule has the

max_call_duration

set, and you’re good to go! Calls routed through that dispatch rule will follow the duration limit automatically. If you want me to walk you through it more or share some examples, just let me know—I’m here to help! Sources: rpc/io.pb.go | livekit-protocol/src/livekit.rs | packages/livekit-server-sdk/src/SipClient.ts | lib/livekit/sip_service_client.rb | pkg/sip/participant.go

but using this max_call_duration params in trunk means the call will be disconnected without any warning from agent. agent should tell atleast 10 seconds before that it's past the max call duration and he have to disconnect the calll now

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