<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:typ="http://www.nortel.com/soa/oi/OpenQ/types" xmlns:typ1="http://www.nortel.com/soa/oi/cct/types">
   <soapenv:Header/>
   <soapenv:Body>
      <typ:LogOffSession>
         <typ:authenticationLevel>
            <typ1:username>?</typ1:username>
            <typ1:password>?</typ1:password>
            <typ1:domain>?</typ1:domain>
         </typ:authenticationLevel>
      </typ:LogOffSession>
   </soapenv:Body>
</soapenv:Envelope>