<xs:elementminOccurs="0"name="MobileExt"nillable="true"type="xs:string"xmlns:xs="http://www.w3.org/2001/XMLSchema"><xs:annotation><xs:appinfo/><xs:documentation><summary>
Extension portion of the mobile phone number.
</summary><lenmin="0"max="10"/></xs:documentation></xs:annotation></xs:element>