What are the possible values of "SessionCase " tags in InitialFilterCriteria.?

Question

What are the possible values of "SessionCase" tags ( <SessionCase>?</SessionCase> ) in "InitialFilterCriteria" ?

Example of IFC (InitialFilterCriteria) :

       <InitialFilterCriteria>\n"
           <Priority>3</Priority>\n"
            <TriggerPoint>\n"
                <ConditionTypeCNF>1</ConditionTypeCNF>\n"
               <SPT>\n"
                  <ConditionNegated>0</ConditionNegated>\n"
                  <Group>0</Group>\n"
                  <Group>1</Group>\n"
                  <SessionCase>?</SessionCase>\n"
                </SPT>\n"
            </TriggerPoint>\n"
             <ApplicationServer>\n"
               <ServerName>sip:as3.number.com</ServerName>\n"
               <DefaultHandling>0</DefaultHandling>\n"
              </ApplicationServer>\n"
       </InitialFilterCriteria>\n"

Answer 1

The SessionCase is defined in the 3GPP standard 29228:

0 (ORIGINATING_SESSION)

1 (TERMINATING_REGISTERED)

2 (TERMINATING_UNREGISTERED)

3 (ORIGINATING_UNREGISTERED)

So the possible values are digits 0, 1, 2 and 3.