Send:
<iq type="set" to="tryggve2@gmail.com/Telepathy" id="msg_9">  <session xmlns="http://www.google.com/session" initiator="tryggve1@gmail.com/Telepathy" type="initiate" id="1453479363">  <description xmlns="http://www.google.com/session/phone">  <payload-type clockrate="8000" name="speex" id="97"></payload-type>
  <payload-type clockrate="8000" name="PCMA" id="8"></payload-type>
  <payload-type clockrate="8000" name="PCMU" id="0"></payload-type>
  <payload-type clockrate="8000" name="MSGSM" id="102"></payload-type>
  <payload-type clockrate="90000" name="MPA" id="96"></payload-type>
</description>
</session>
</iq>

Receive:
<iq type="set" to="tryggve1@gmail.com/Telepathy" id="msg_18" from="tryggve2@gmail.com/Telepathy">  <session initiator="tryggve1@gmail.com/Telepathy" type="accept" id="1453479363" xmlns="http://www.google.com/session">  <description xmlns="http://www.google.com/session/phone">  <payload-type clockrate="8000" name="speex" id="97"/>
  <payload-type clockrate="8000" name="PCMA" id="8"/>
  <payload-type clockrate="8000" name="PCMU" id="0"/>
</description>
</session>
</iq>