After dialing the phone, if I connect, it will automatically hang up

[true0]

2024-12-17 15:06:31,354 - PySIP.utils.logger - INFO - Detecting connection type (UDP/TCP/TLS). This might take some time...
2024-12-17 15:07:35,159 - PySIP.utils.logger - INFO - Connection type detected: UDP
2024-12-17 15:07:35,787 - PySIP.utils.logger - INFO - Sip Account: 1776008 registered to the server.
2024-12-17 15:07:36,416 - PySIP.utils.logger - INFO - CallHandler has been initialized..
2024-12-17 15:07:38,926 - PySIP.utils.logger - CRITICAL - No remote session info defined
2024-12-17 15:07:38,926 - PySIP.utils.logger - INFO - The call has ben stopped
2024-12-17 15:07:38,927 - PySIP.utils.logger - INFO - Call hanged up due to: Normal Stop
2024-12-17 15:07:48,126 - PySIP.utils.logger - WARNING - The call was already TERMINATED. stop call invoked more than once.
This is my code：

import asyncio
import time

from PySIP.sip_account import SipAccount
from PySIP.sip_call import SipCall

# Initialize SIP account with credentials from .env file
account = SipAccount(
    "username",
    "passwrod",
    "host:port"
)


@account.on_incoming_call
async def handle_incoming_call(call: SipCall):
    await call.accept()
    print("call ....")
    await call.call_handler.say("We have received your call successfully")
    time.sleep(5)
    await call.call_handler.hangup()


async def main():
    # Register the SIP account
    await account.register()
    # Make a call to a test number (e.g., '111')
    call = account.make_call("6000")
    call_task = asyncio.create_task(call.start())
    # Wait for the call to complete, then unregister
    await call_task
    await account.unregister()


if __name__ == "__main__":
    asyncio.run(main())

The handle_incoming-call method was not triggered