如果XML IVR中没有来自用户的DTMF，如何将呼叫路由到分机？

我正在用xml编写IVR，在应用这段代码之后，我得到了在播放主菜单后，当我按下数字3并进入第二个菜单（SPG_IVR_子菜单）时，如果我不按下任何数字，它将再次重放主菜单，但我正在尝试，如果我不按下第二个菜单中的任何数字，则调用routs到844分机。但如果用户未在（SPG_ivr_子菜单）中插入任何DTMF，则使用此代码会重复主菜单。请告诉我这个代码有什么问题，我应该怎么做才能准确地配置呼叫路由

 <include>
     <!-- demo IVR setup -->
     <!-- demo IVR, Main Menu -->
     <menu name="demo_ivr"
        greet-long="/var/sipxdata/mediaserver/data/ivrscript/CoralIVR/prompts/coral.wav"
        greet-  short="/var/sipxdata/mediaserver/data/ivrscript/CoralIVR/prompts/coral.wav"
        invalid-sound="/var/sipxdata/mediaserver/data/ivrscript/CoralIVR/prompts/is_invalid.wav"
        exit-sound="/var/sipxdata/mediaserver/data/ivrscript/CoralIVR/prompts/ExitTone.wav"
        confirm-macro=""
        confirm-key=""
        tts-engine="flite"
        tts-voice="rms"
        confirm-attempts="1"
        timeout="10000"
        inter-digit-timeout="2000"
        max-failures="1"
        max-timeouts="1"
        digit-len="4">
        <!-- The following are the definitions for the digits the user dials -->
        <!-- Digit 1 transfer caller to the public FreeSWITCH conference -->
    <entry action="menu-sub" digits="3" param="SPG_ivr_submenu"/>
    <entry action="menu-sub" digits="2" param="support_ivr_submenu"/>
    <entry action="menu-sub" digits="1" param="corporate_ivr_submenu"/>
    <entry action="menu-sub" digits="4" param="delhiBranch_ivr_submenu"/>
    <entry action="menu-sub" digits="5" param="erp_ivr_submenu"/>
    <entry action="menu-top" digits="*"/>   <!-- Repeat this menu -->


  </menu>

          <!-- The demo IVR sub menu prompt basically just says, "press star to return to previous menu..." -->

       <entry action="menu-exec-app" digits="1" param="set ringback=$${us-ring}"/>
       <entry action="menu-exec-app" digits="1" param="bridge sofia/$${domain}/813@192.168.1.240"/>
       <entry action="menu-exec-app" digits="2" param="set ringback=$${us-ring}"/>
       <entry action="menu-exec-app" digits="2" param="bridge sofia/$${domain}/819@192.168.1.240"/>
       <entry action="menu-top" digits="*"/>
       <!-- <entry action="menu-exec-app" digits=xsi:nil="true" param="bridge sofia/$${domain}/844@192.168.1.240"/> -->

        </menu>
           <extension name="ext_SPG_ivr_submenu">
           <condition field="destination_number" expression="^844$">
           <action application="set" data="hangup_after_bridge=true"/>
           <action application="ivr" data="SPG_ivr_submenu"/>
           <action application="bridge" data="sofia/$${domain}/844@192.168.1.240"/>
    </condition>
 </extension>




</include>

          <!-- The demo IVR sub menu prompt basically just says, "press star to return to previous menu..." -->

       <entry action="menu-exec-app" digits="1" param="set ringback=$${us-ring}"/>
       <entry action="menu-exec-app" digits="1" param="bridge sofia/$${domain}/813@192.168.1.240"/>
       <entry action="menu-exec-app" digits="2" param="set ringback=$${us-ring}"/>
       <entry action="menu-exec-app" digits="2" param="bridge sofia/$${domain}/819@192.168.1.240"/>
       <entry action="menu-top" digits="*"/>
       <!-- <entry action="menu-exec-app" digits=xsi:nil="true" param="bridge sofia/$${domain}/844@192.168.1.240"/> -->

        </menu>
           <extension name="ext_SPG_ivr_submenu">
           <condition field="destination_number" expression="^844$">
           <action application="set" data="hangup_after_bridge=true"/>
           <action application="ivr" data="SPG_ivr_submenu"/>
           <action application="bridge" data="sofia/$${domain}/844@192.168.1.240"/>
    </condition>
 </extension>




</include>

这是什么IVR平台？这不是标准的VoiceXML。VoiceXML的menu元素没有显示的所有属性，它使用choice元素而不是entry元素。在VoiceXML中，您可以使用菜单中的noinput元素来处理调用方未提供任何输入的事件。实际上，这是freeswitch的简单xml ivr脚本。你可以在……看到它。。。。。