<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:add="http://www.nortel.com/soa/oi/cct/types/AddressService" xmlns:typ="http://www.nortel.com/soa/oi/cct/types">
   <soapenv:Header/>
   <soapenv:Body>
      <add:GetMessageWaitingResponse>
         <add:messageWaiting>
            <typ:messageWaiting>?</typ:messageWaiting>
            <typ:numberOfMessages>?</typ:numberOfMessages>
         </add:messageWaiting>
      </add:GetMessageWaitingResponse>
   </soapenv:Body>
</soapenv:Envelope>