Comcast: Tech IVR: Grammar: Phone number

<?xml version="1.0" encoding="ISO-8859-1" ?>
<grammar version="1.0" xmlns="http://www.w3.org/2001/06/grammar" xml:lang="en-us" mode="dtmf" root="___ROOT___">

  <rule id="___ROOT___" scope="public">
    <one-of>
      <item>
        <item repeat="10">
          <ruleref uri="#DIGITS" />
        </item>
      </item>
    </one-of>
  </rule>

  <rule id="DIGITS">
    <one-of>
      <item>0</item>
      <item>1</item>
      <item>2</item>
      <item>3</item>
      <item>4</item>
      <item>5</item>
      <item>6</item>
      <item>7</item>
      <item>8</item>
      <item>9</item>
    </one-of>
   </rule>
 </grammar>