<?xml version="1.0" encoding="UTF-8"?>
<xs:schema targetNamespace="urn:ietf:params:xml:ns:spirits-1.0"
          xmlns:tns="urn:ietf:params:xml:ns:spirits-1.0"
          xmlns:xs="http://www.w3.org/2001/XMLSchema"
          elementFormDefault="qualified"
          attributeFormDefault="unqualified">

        <!-- This import brings in the XML language attribute xml:lang-->
        <xs:import namespace="http://www.w3.org/XML/1998/namespace"
                   schemaLocation="http://www.w3.org/2001/xml.xsd"/>
        <xs:annotation>
           <xs:documentation xml:lang="en">
                 Describes SPIRITS events.
           </xs:documentation>
        </xs:annotation>

        <xs:element name="spirits-event" type="tns:SpiritsEventType"/>

        <xs:complexType name="SpiritsEventType">
           <xs:sequence>
              <xs:element name="Event" type="tns:EventType" minOccurs="1"
                  maxOccurs="unbounded"/>
              <xs:any namespace="##other" processContents="lax"
                  maxOccurs="unbounded"/>
           </xs:sequence>
        </xs:complexType>

        <xs:complexType name="EventType">
           <xs:sequence>
              <xs:element name="CalledPartyNumber" type="xs:token"
                  minOccurs="0" maxOccurs="1"/>
              <xs:element name="CallingPartyNumber" type="xs:token"
                  minOccurs="0" maxOccurs="1"/>
              <xs:element name="DialledDigits" type="xs:token"
                  minOccurs="0" maxOccurs="1"/>
              <xs:element name="Cell-ID" type="xs:token"
                  minOccurs="0" maxOccurs="1"/>
              <xs:element name="Cause" type="tns:CauseType"
                  minOccurs="0" maxOccurs="1"/>
           </xs:sequence>
           <xs:attribute name="type" type="tns:PayloadType"
               use="required"/>
           <xs:attribute name="name" type="tns:EventNameType"
               use="required"/>
           <xs:attribute name="mode" type="tns:ModeType"
               use="optional" default="N"/>
        </xs:complexType>

        <xs:simpleType name="PayloadType">
           <!-- The <spirits-event> will contain either a list of -->
           <!-- INDPs events or a list of userprof events -->
           <xs:restriction base="xs:string">
              <xs:enumeration value="INDPs"/>
              <xs:enumeration value="userprof"/>
           </xs:restriction>
        </xs:simpleType>

        <xs:simpleType name="EventNameType">
           <xs:restriction base="xs:string">
              <!-- These are the call related events (DPs).  If the -->
              <!-- PaylaodType is "INDPs", then the value of the "name" -->
              <!-- attribute is one of these; example -->
              <!-- <spirits-event type="INDPs" name="OCI"> -->
              <xs:enumeration value="OAA"/>
              <xs:enumeration value="OCI"/>
              <xs:enumeration value="OAI"/>
              <xs:enumeration value="OA"/>
              <xs:enumeration value="OTS"/>
              <xs:enumeration value="ONA"/>
              <xs:enumeration value="OCPB"/>
              <xs:enumeration value="ORSF"/>
              <xs:enumeration value="OMC"/>
              <xs:enumeration value="OAB"/>
              <xs:enumeration value="OD"/>
              <xs:enumeration value="TA"/>
              <xs:enumeration value="TMC"/>
              <xs:enumeration value="TAB"/>
              <xs:enumeration value="TD"/>
              <xs:enumeration value="TAA"/>
              <xs:enumeration value="TFSA"/>
              <xs:enumeration value="TB"/>
              <!-- These are the non-call related events.  If the -->
              <!-- PayloadType is "user-prof", then the value of the -->
              <!-- "name" attribute is one of these; example -->
              <!-- <spirits-event type="userprof" name="LUDV"> -->
              <xs:enumeration value="LUSV"/>
              <xs:enumeration value="LUDV"/>
              <xs:enumeration value="REG"/>
              <xs:enumeration value="UNREGMS"/>
              <xs:enumeration value="UNREGNTWK"/>
           </xs:restriction>
        </xs:simpleType>

        <xs:simpleType name="ModeType">
           <!-- One of two values: "N"otification or "R"equest -->
           <xs:restriction base="xs:string">
              <xs:enumeration value="N"/>
              <xs:enumeration value="R"/>
           </xs:restriction>
        </xs:simpleType>

        <xs:simpleType name="CauseType">
           <xs:restriction base="xs:string">
              <xs:enumeration value="Busy"/>
              <xs:enumeration value="Unreachable"/>
           </xs:restriction>
        </xs:simpleType>
   </xs:schema>