I already set unique name for room and I have same issue with audio.

There is my python code from my windows 10 machine:

import time
import jwt
import requests

# ============================================================
# :closed_lock_with_key: LIVEKIT CREDENTIALS (FROM DASHBOARD)
# ============================================================

LIVEKIT_API_KEY = "My_LIVEKIT_API_KEY "
LIVEKIT_API_SECRET = "My_LIVEKIT_API_SECRET "

LIVEKIT_BASE_URL = "<https://lagent-vjsmrvrs.livekit.cloud>"

# ============================================================
# :telephone_receiver: SIP + AGENT CONFIG
# ============================================================

ROOM_NAME = "sip-room-audio-test-004"

# SIP caller
CALLER_IDENTITY = "sip-caller-004"
CALLER_NAME = "SIP Caller"
SIP_TRUNK_ID = "ST_YVKTAZjazUSa"
DIAL_NUMBER = "XXX905908"

# Agent
AGENT_ID = "CA_CXVqqec98MpN"
AGENT_IDENTITY = "audio-agent-004"
AGENT_NAME = "Audio Test Agent 004"

# ============================================================
# :globe_with_meridians: LIVEKIT API ENDPOINTS
# ============================================================

SIP_URL = f"{LIVEKIT_BASE_URL}/twirp/livekit.SIP/CreateSIPParticipant"
AGENT_URL = f"{LIVEKIT_BASE_URL}/twirp/livekit.Agents/StartAgent"

# ============================================================
# :key: ADMIN JWT (ONE TOKEN FOR EVERYTHING)
# ============================================================

def generate_admin_jwt(identity: str) -> str:
    now = int(time.time())

    payload = {
        "jti": f"admin-{now}",
        "iat": now,
        "exp": now + 3600,
        "iss": LIVEKIT_API_KEY,
        "sub": "admin",
        "identity": identity,

        # SIP permissions
        "sip": {
            "admin": True,
            "call": True,
            "connect": True
        },

        # Agent permissions
        "agent": {
            "start": True
        },

        # Room + media permissions
        "video": {
            "room": "*",
            "roomJoin": True,
            "roomCreate": True,
            "canPublish": True,
            "canSubscribe": True
        }
    }

    return jwt.encode(payload, LIVEKIT_API_SECRET, algorithm="HS256")


# ============================================================
# :arrow_forward: STEP 1 — START AGENT FIRST
# ============================================================

admin_jwt = generate_admin_jwt(AGENT_IDENTITY)

headers = {
    "Authorization": f"Bearer {admin_jwt}",
    "Content-Type": "application/json"
}

agent_body = {
    "agent_id": AGENT_ID,
    "room_name": ROOM_NAME,
    "participant_identity": AGENT_IDENTITY,
    "participant_name": AGENT_NAME
}

print("\n:arrow_forward: Starting Agent...")
agent_response = requests.post(AGENT_URL, json=agent_body, headers=headers)
print("Agent Status:", agent_response.status_code)
print(agent_response.text)

if agent_response.status_code != 200:
    raise RuntimeError(":x: Agent failed to start")

# VERY IMPORTANT: allow agent to publish audio
time.sleep(2)


# ============================================================
# :telephone_receiver: STEP 2 — CREATE SIP CALL
# ============================================================

sip_body = {
    "sip_trunk_id": SIP_TRUNK_ID,
    "sip_call_to": DIAL_NUMBER,
    "room_name": ROOM_NAME,
    "participant_identity": CALLER_IDENTITY,
    "participant_name": CALLER_NAME,
    "wait_until_answered": True,
    "play_dialtone": True
}

print("\n:telephone_receiver: Creating SIP Call...")
sip_response = requests.post(SIP_URL, json=sip_body, headers=headers)
print("SIP Status:", sip_response.status_code)
print(sip_response.text)

if sip_response.status_code != 200:
    raise RuntimeError(":x: SIP call failed")

print("\n:white_check_mark: SUCCESS — Agent + SIP should now have AUDIO")

console

python agent.py console