simple call block in freeswitch dialplan xml

implementing a simple call blocker with freeswitch.

Create an extension for every number you want to block, and an action for it. I currently have this:

<include>
  <extension name="annoying1">
    <condition field="${sip_from_user}" expression="^xxxxxxxxxx$">
        <action application="sleep" data="10000"/>
        <action application="playback" data="voicemail/vm-goodbye.wav"/> 
        <action application="sleep" data="500"/>
        <action application="hangup"/>
    </condition>
  </extension>
</include>

it goes in the conf/dialplan/public directory, with a number lower than the rule for handling incoming calls normally.

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