Twilio会议通话中按星号后Gather语音仅播放部分即挂断的问题求助

我现在遇到一个Twilio语音通话的棘手问题：当口译员从会议中挂断，但客户还在线时，我需要触发一个回退的Gather交互，让客户选择是转接新口译员还是直接挂断电话。

目前大部分流程都能正常跑通，但当客户按下星号后，Gather的提示语音只播放了开头部分（比如只说到“Press 1 to”），然后通话就直接断开了，完全没法完成后续的选择交互。

下面是我的相关代码，麻烦大家帮忙看看问题出在哪：

来电处理逻辑代码 #

def handle_incoming_call(self, call_sid, from_number, language_code):
        try:
            with transaction.atomic():
                next_interpreter = CallSelector.get_next_interpreter(language_code)

                conference_name = f"conferenceـ{call_sid}"
                conference = CallSelector.create_conference(
                    language=next_interpreter.language,
                    interpreter=next_interpreter.interpreter,
                    conference_name=conference_name,
                )

                response = VoiceResponse()
                response.say("Please wait while we connect you with an interpreter")
                dial = Dial(
                    hangup_on_star=True,
                    action=f"{settings.BASE_URL}/api/calls/webhook/interpreter_leave/{conference.conference_id}/",
                   
                )
                dial.conference(
                    conference_name,
                    start_conference_on_enter=True,
                    end_conference_on_exit=False,
                    # record=True,
                    # recording_status_callback=f"{settings.BASE_URL}/api/calls/webhook/recording/{conference.conference_id}/",
                    status_callback=f"{settings.BASE_URL}/api/calls/webhook/conference-status/{conference.conference_id}/",
                    status_callback_event="start end join leave announcement",
                    status_callback_method="POST",
                    beep=True,
                    participant_label="client",
                )
                response.append(dial)

                self._add_client_to_conference(conference, from_number, call_sid),
                self._call_interpreter(conference, next_interpreter.interpreter),

                return response
        except Exception as e:
            logger.error(f"Call handling failed: {str(e)}", exc_info=True)
            return self._generate_no_interpreter_twiml()

口译员离开的回调代码（interpreter_leave） #

def handel_interpreter_leave(self, conference_id: str):
        try:

            print("Interpreter leave handling started")
            conference = CallSelector.get_conference_by_conference_id(conference_id)
            response = VoiceResponse()
            gather = Gather(
                num_digits=1,
                action=f"{settings.BASE_URL}/api/calls/webhook/client_choice/{conference_id}/",
                method="POST",
                timeout=10,
                input="dtmf",
            )
            gather.say("Press 1 to connect with a new interpreter, or press 2 to end the call.")
            response.append(gather)
            return response
        except Exception as e:
            logger.error(f"Interpreter leave handling failed: {str(e)}", exc_info=True)
            raise

口译员挂断后的通知逻辑代码 #

def handle_interpreter_hangup(self, conference_id: str, sid: str):
        try:
            print("Interpreter hangup handling started")
            conference = CallSelector.get_conference_by_conference_id(conference_id)
            self.client.conferences.get(conference.conference_sid).update(
                announce_url=f"{settings.BASE_URL}/api/calls/webhook/interpreter_leave_redirect/{conference_id}/"
            )
        except Exception as e:
            logger.error(f"Interpreter hangup handling failed: {str(e)}", exc_info=True)
            raise

另外还有个奇怪的现象：如果我在最初的Dial组件里加上time_limit属性，Gather就能正常完整播放提示音并等待客户输入了。但我实在想不通这两者之间的关联，也不想靠这种临时的“偏方”解决问题，希望能找到根本原因。

备注：内容来源于stack exchange，提问作者Elabbasy00