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RFC 6917

 
 
 

Media Resource Brokering

Part 6 of 6, p. 106 to 136
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11.  Media Service Resource Consumer Interface XML Schema

   This section gives the XML Schema Definition
   [W3C.REC-xmlschema-1-20041028] [W3C.REC-xmlschema-2-20041028] of the
   "application/mrb-consumer+xml" format.

<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema targetNamespace="urn:ietf:params:xml:ns:mrb-consumer"
 elementFormDefault="qualified" blockDefault="#all"
 xmlns="urn:ietf:params:xml:ns:mrb-consumer"
 xmlns:ca="urn:ietf:params:xml:ns:pidf:geopriv10:civicAddr"
 xmlns:xsd="http://www.w3.org/2001/XMLSchema">

 <xsd:annotation>
  <xsd:documentation>
   IETF MediaCtrl MRB 1.0

   This is the schema of the IETF MediaCtrl MRB Consumer interface.

   The schema namespace is urn:ietf:params:xml:ns:mrb-consumer

  </xsd:documentation>
 </xsd:annotation>


 <!--
  #############################################################

  SCHEMA IMPORTS

  #############################################################
 -->

 <xsd:import namespace="http://www.w3.org/XML/1998/namespace"
  schemaLocation="http://www.w3.org/2001/xml.xsd">
  <xsd:annotation>
   <xsd:documentation>
    This import brings in the XML attributes for
    xml:base, xml:lang, etc.
   </xsd:documentation>
  </xsd:annotation>
 </xsd:import>

 <xsd:import
  namespace="urn:ietf:params:xml:ns:pidf:geopriv10:civicAddr"
  schemaLocation="civicAddress.xsd">
  <xsd:annotation>
   <xsd:documentation>

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    This import brings in the civicAddress specification
    from RFC 5139.
   </xsd:documentation>
  </xsd:annotation>
 </xsd:import>

<!--
  #####################################################

  Extensible core type

  #####################################################
 -->

 <xsd:complexType name="Tcore">
  <xsd:annotation>
   <xsd:documentation>
    This type is extended by other (non-mixed) component types to
    allow attributes from other namespaces.
   </xsd:documentation>
  </xsd:annotation>
  <xsd:sequence/>
  <xsd:anyAttribute namespace="##other" processContents="lax" />
 </xsd:complexType>


<!--
  #####################################################

  TOP-LEVEL ELEMENT: mrbconsumer

  #####################################################
 -->

<xsd:complexType name="mrbconsumerType">
  <xsd:complexContent>
   <xsd:extension base="Tcore">
    <xsd:sequence>
     <xsd:choice>
      <xsd:element ref="mediaResourceRequest" />
      <xsd:element ref="mediaResourceResponse" />
      <xsd:any namespace="##other" minOccurs="0"
       maxOccurs="unbounded" processContents="lax" />
     </xsd:choice>
    </xsd:sequence>
    <xsd:attribute name="version" type="version.datatype"
      use="required" />
    <xsd:anyAttribute namespace="##other" processContents="lax" />

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   </xsd:extension>
  </xsd:complexContent>
</xsd:complexType>

 <xsd:element name="mrbconsumer" type="mrbconsumerType" />


<!--
  #####################################################

  mediaResourceRequest TYPE

  #####################################################
 -->

<!--  mediaResourceRequest -->

 <xsd:complexType name="mediaResourceRequestType">
  <xsd:complexContent>
   <xsd:extension base="Tcore">
    <xsd:sequence>
      <xsd:element ref="generalInfo" minOccurs="0" />
      <xsd:element ref="ivrInfo" minOccurs="0" />
      <xsd:element ref="mixerInfo" minOccurs="0" />
     <xsd:any namespace="##other" minOccurs="0"
      maxOccurs="unbounded" processContents="lax" />
    </xsd:sequence>
    <xsd:attribute name="id" type="xsd:string"
      use="required" />
    <xsd:anyAttribute namespace="##other" processContents="lax" />
   </xsd:extension>
  </xsd:complexContent>
 </xsd:complexType>

 <xsd:element name="mediaResourceRequest"
         type="mediaResourceRequestType" />

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<!--
  #####################################################

  generalInfo TYPE

  #####################################################
-->

<!--  generalInfo -->

<xsd:complexType name="generalInfoType">
  <xsd:complexContent>
   <xsd:extension base="Tcore">
    <xsd:sequence>
      <xsd:element ref="session-info" minOccurs="0" />
      <xsd:element ref="packages" minOccurs="0" />
      <xsd:any namespace="##other" minOccurs="0"
       maxOccurs="unbounded" processContents="lax" />
    </xsd:sequence>
    <xsd:anyAttribute namespace="##other" processContents="lax" />
   </xsd:extension>
  </xsd:complexContent>
 </xsd:complexType>

<xsd:element name="generalInfo" type="generalInfoType" />


<!--  session-info -->

<xsd:complexType name="session-infoType">
  <xsd:complexContent>
   <xsd:extension base="Tcore">
    <xsd:sequence>
       <xsd:element name="session-id" type="id.datatype"/>
       <xsd:element name="seq" type="xsd:nonNegativeInteger"/>
       <xsd:element name="action" type="action.datatype"/>
       <xsd:any namespace="##other" minOccurs="0"
        maxOccurs="unbounded" processContents="lax" />
    </xsd:sequence>
    <xsd:anyAttribute namespace="##other" processContents="lax" />
   </xsd:extension>
  </xsd:complexContent>
 </xsd:complexType>

<xsd:element name="session-info" type="session-infoType" />

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<!--  packages -->

<xsd:complexType name="packagesType">
  <xsd:complexContent>
   <xsd:extension base="Tcore">
    <xsd:sequence>
      <xsd:element name="package" type="xsd:string" minOccurs="0"
        maxOccurs="unbounded" />
      <xsd:any namespace="##other" minOccurs="0"
        maxOccurs="unbounded" processContents="lax" />
    </xsd:sequence>
    <xsd:anyAttribute namespace="##other" processContents="lax" />
   </xsd:extension>
  </xsd:complexContent>
</xsd:complexType>

<xsd:element name="packages" type="packagesType"/>


<!--
  #####################################################

  ivrInfo TYPE

  #####################################################
-->

<!--  ivrInfo -->

<xsd:complexType name="ivrInfoType">
  <xsd:complexContent>
   <xsd:extension base="Tcore">
    <xsd:sequence>
      <xsd:element ref="ivr-sessions" minOccurs="0" />
      <xsd:element ref="file-formats" minOccurs="0" />
      <xsd:element ref="dtmf-type" minOccurs="0" />
      <xsd:element ref="tones" minOccurs="0" />
      <xsd:element ref="asr-tts" minOccurs="0" />
      <xsd:element ref="vxml" minOccurs="0" />
      <xsd:element ref="location" minOccurs="0" />
      <xsd:element ref="encryption" minOccurs="0" />
      <xsd:element ref="application-data" minOccurs="0" />
      <xsd:element ref="max-prepared-duration" minOccurs="0" />
      <xsd:element ref="file-transfer-modes" minOccurs="0" />
      <xsd:any namespace="##other" minOccurs="0"
      maxOccurs="unbounded" processContents="lax" />
    </xsd:sequence>
    <xsd:anyAttribute namespace="##other" processContents="lax" />

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   </xsd:extension>
  </xsd:complexContent>
 </xsd:complexType>

<xsd:element name="ivrInfo" type="ivrInfoType" />


<!--
  #####################################################

  mixerInfo TYPE

  #####################################################
-->

<!--  mixerInfo -->

<xsd:complexType name="mixerInfoType">
  <xsd:complexContent>
   <xsd:extension base="Tcore">
    <xsd:sequence>
      <xsd:element ref="mixers" minOccurs="0"/>
      <xsd:element ref="file-formats" minOccurs="0"/>
      <xsd:element ref="dtmf-type" minOccurs="0"/>
      <xsd:element ref="tones" minOccurs="0"/>
      <xsd:element ref="mixing-modes" minOccurs="0"/>
      <xsd:element ref="application-data" minOccurs="0"/>
      <xsd:element ref="location" minOccurs="0"/>
      <xsd:element ref="encryption" minOccurs="0"/>
      <xsd:any namespace="##other" minOccurs="0"
       maxOccurs="unbounded" processContents="lax" />
    </xsd:sequence>
    <xsd:anyAttribute namespace="##other" processContents="lax" />
   </xsd:extension>
  </xsd:complexContent>
 </xsd:complexType>

<xsd:element name="mixerInfo" type="mixerInfoType" />

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<!--
  #####################################################

  mediaResourceResponse TYPE

  #####################################################
 -->

<!--  mediaResourceResponse -->

 <xsd:complexType name="mediaResourceResponseType">
  <xsd:complexContent>
   <xsd:extension base="Tcore">
    <xsd:sequence>
       <xsd:element ref="response-session-info" minOccurs="0" />
       <xsd:any namespace="##other" minOccurs="0"
          maxOccurs="unbounded" processContents="lax" />
    </xsd:sequence>
    <xsd:attribute name="id" type="xsd:string"
     use="required" />
    <xsd:attribute name="status" type="status.datatype"
     use="required" />
    <xsd:attribute name="reason" type="xsd:string" />
    <xsd:anyAttribute namespace="##other" processContents="lax" />
   </xsd:extension>
  </xsd:complexContent>
 </xsd:complexType>

 <xsd:element name="mediaResourceResponse"
         type="mediaResourceResponseType" />


<!--
  ####################################################

  ELEMENTS

  ####################################################
 -->

<!--  response-session-info -->

<xsd:complexType name="response-session-infoType">
  <xsd:complexContent>
   <xsd:extension base="Tcore">
    <xsd:sequence>
       <xsd:element name="session-id" type="id.datatype"/>
       <xsd:element name="seq" type="xsd:nonNegativeInteger"/>

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       <xsd:element name="expires" type="xsd:nonNegativeInteger"/>
       <xsd:element ref="media-server-address"
          minOccurs="0" maxOccurs="unbounded" />
       <xsd:any namespace="##other" minOccurs="0"
         maxOccurs="unbounded" processContents="lax" />
    </xsd:sequence>
    <xsd:anyAttribute namespace="##other" processContents="lax" />
   </xsd:extension>
  </xsd:complexContent>
 </xsd:complexType>

<xsd:element name="response-session-info"
   type="response-session-infoType" />

<!-- media-server-address -->

<xsd:complexType name="media-server-addressTYPE">
  <xsd:complexContent>
   <xsd:extension base="Tcore">
    <xsd:sequence>
     <xsd:element name="connection-id" type="xsd:string"
         minOccurs="0" maxOccurs="unbounded" />
     <xsd:element ref="ivr-sessions" minOccurs="0"/>
     <xsd:element ref="mixers" minOccurs="0"/>
     <xsd:any namespace="##other" minOccurs="0"
         maxOccurs="unbounded" processContents="lax" />
    </xsd:sequence>
    <xsd:attribute name="uri" type="xsd:anyURI" use="required" />
    <xsd:anyAttribute namespace="##other" processContents="lax" />
   </xsd:extension>
  </xsd:complexContent>
</xsd:complexType>

<xsd:element name="media-server-address"
    type="media-server-addressTYPE" />

<!--  ivr-sessions -->

<xsd:complexType name="ivr-sessionsType">
 <xsd:complexContent>
   <xsd:extension base="Tcore">
    <xsd:sequence>
      <xsd:element ref="rtp-codec" minOccurs="0"
        maxOccurs="unbounded" />
       <xsd:any namespace="##other" minOccurs="0"
        maxOccurs="unbounded" processContents="lax" />
    </xsd:sequence>
    <xsd:anyAttribute namespace="##other" processContents="lax" />

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   </xsd:extension>
  </xsd:complexContent>
 </xsd:complexType>

<xsd:element name="ivr-sessions" type="ivr-sessionsType" />

<xsd:complexType name="rtp-codecType">
  <xsd:complexContent>
   <xsd:extension base="Tcore">
    <xsd:sequence>
      <xsd:element name="decoding" type="xsd:nonNegativeInteger" />
      <xsd:element name="encoding" type="xsd:nonNegativeInteger" />
       <xsd:any namespace="##other" minOccurs="0"
        maxOccurs="unbounded" processContents="lax" />
    </xsd:sequence>
    <xsd:attribute name="name" type="xsd:string" use="required" />
    <xsd:anyAttribute namespace="##other" processContents="lax" />
   </xsd:extension>
  </xsd:complexContent>
 </xsd:complexType>

<xsd:element name="rtp-codec" type="rtp-codecType" />


<!-- file-formats -->

<xsd:complexType name="file-formatsType">
  <xsd:complexContent>
   <xsd:extension base="Tcore">
    <xsd:sequence>
       <xsd:element ref="required-format"
         minOccurs="0" maxOccurs="unbounded" />
       <xsd:any namespace="##other" minOccurs="0"
         maxOccurs="unbounded" processContents="lax" />
    </xsd:sequence>
    <xsd:anyAttribute namespace="##other" processContents="lax" />
   </xsd:extension>
  </xsd:complexContent>
</xsd:complexType>

<xsd:element name="file-formats" type="file-formatsType" />

<xsd:complexType name="required-formatType">
  <xsd:complexContent>
   <xsd:extension base="Tcore">
    <xsd:sequence>
      <xsd:element ref="required-file-package"
         minOccurs="0" maxOccurs="unbounded" />

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       <xsd:any namespace="##other" minOccurs="0"
        maxOccurs="unbounded" processContents="lax" />
    </xsd:sequence>
    <xsd:attribute name="name" type="xsd:string" use="required" />
    <xsd:anyAttribute namespace="##other" processContents="lax" />
   </xsd:extension>
  </xsd:complexContent>
</xsd:complexType>

<xsd:element name="required-format" type="required-formatType" />

<xsd:complexType name="required-file-packageType">
  <xsd:complexContent>
   <xsd:extension base="Tcore">
    <xsd:sequence>
       <xsd:element name="required-file-package-name" type="xsd:string"
        minOccurs="0" maxOccurs="unbounded" />
       <xsd:any namespace="##other" minOccurs="0"
        maxOccurs="unbounded" processContents="lax" />
    </xsd:sequence>
    <xsd:anyAttribute namespace="##other" processContents="lax" />
   </xsd:extension>
  </xsd:complexContent>
</xsd:complexType>

<xsd:element name="required-file-package"
  type="required-file-packageType" />

<!--  dtmf-type -->

<xsd:complexType name="dtmfType">
  <xsd:complexContent>
   <xsd:extension base="Tcore">
    <xsd:sequence>
       <xsd:element ref="detect" />
       <xsd:element ref="generate" />
       <xsd:element ref="passthrough" />
       <xsd:any namespace="##other" minOccurs="0"
        maxOccurs="unbounded" processContents="lax" />
    </xsd:sequence>
    <xsd:anyAttribute namespace="##other" processContents="lax" />
   </xsd:extension>
  </xsd:complexContent>
</xsd:complexType>

<xsd:element name="dtmf" type="dtmfType" />

<xsd:complexType name="detectType">

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  <xsd:complexContent>
   <xsd:extension base="Tcore">
    <xsd:sequence>
       <xsd:element ref="dtmf-type"
        minOccurs="0" maxOccurs="unbounded" />
       <xsd:any namespace="##other" minOccurs="0"
        maxOccurs="unbounded" processContents="lax" />
    </xsd:sequence>
    <xsd:anyAttribute namespace="##other" processContents="lax" />
   </xsd:extension>
  </xsd:complexContent>
</xsd:complexType>

<xsd:element name="detect" type="detectType" />

<xsd:complexType name="generateType">
  <xsd:complexContent>
   <xsd:extension base="Tcore">
    <xsd:sequence>
       <xsd:element ref="dtmf-type"
        minOccurs="0" maxOccurs="unbounded" />
       <xsd:any namespace="##other" minOccurs="0"
        maxOccurs="unbounded" processContents="lax" />
    </xsd:sequence>
    <xsd:anyAttribute namespace="##other" processContents="lax" />
   </xsd:extension>
  </xsd:complexContent>
</xsd:complexType>

<xsd:element name="generate" type="generateType" />

<xsd:complexType name="passthroughType">
  <xsd:complexContent>
   <xsd:extension base="Tcore">
    <xsd:sequence>
       <xsd:element ref="dtmf-type"
        minOccurs="0" maxOccurs="unbounded" />
       <xsd:any namespace="##other" minOccurs="0"
        maxOccurs="unbounded" processContents="lax" />
    </xsd:sequence>
    <xsd:anyAttribute namespace="##other" processContents="lax" />
   </xsd:extension>
  </xsd:complexContent>
</xsd:complexType>

<xsd:element name="passthrough" type="passthroughType" />

<xsd:complexType name="dtmf-typeType">

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  <xsd:complexContent>
   <xsd:extension base="Tcore">
    <xsd:sequence>
       <xsd:any namespace="##other" minOccurs="0"
        maxOccurs="unbounded" processContents="lax" />
    </xsd:sequence>
    <xsd:attribute name="name" type="dtmf.datatype" use="required" />
    <xsd:attribute name="package" type="xsd:string" use="required" />
    <xsd:anyAttribute namespace="##other" processContents="lax" />
   </xsd:extension>
  </xsd:complexContent>
</xsd:complexType>

<xsd:element name="dtmf-type" type="dtmf-typeType" />

<!--  tones -->

<xsd:complexType name="required-tonesType">
 <xsd:complexContent>
  <xsd:extension base="Tcore">
   <xsd:sequence>
      <xsd:element ref="country-codes"
        minOccurs="0" maxOccurs="1" />
      <xsd:element ref="h248-codes"
        minOccurs="0" maxOccurs="1" />
      <xsd:any namespace="##other" minOccurs="0"
        maxOccurs="unbounded" processContents="lax" />
   </xsd:sequence>
   <xsd:anyAttribute namespace="##other" processContents="lax" />
  </xsd:extension>
 </xsd:complexContent>
</xsd:complexType>

<xsd:element name="tones" type="required-tonesType" />

<xsd:complexType name="required-country-codesType">
 <xsd:complexContent>
  <xsd:extension base="Tcore">
   <xsd:sequence>
     <xsd:element ref="country-code"
        minOccurs="0" maxOccurs="unbounded" />
      <xsd:any namespace="##other" minOccurs="0"
       maxOccurs="unbounded" processContents="lax" />
   </xsd:sequence>
   <xsd:anyAttribute namespace="##other" processContents="lax" />
  </xsd:extension>
 </xsd:complexContent>
</xsd:complexType>

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<xsd:element name="country-codes"
   type="required-country-codesType" />

<xsd:complexType name="country-codeType" mixed="true">
 <xsd:sequence>
    <xsd:any namespace="##other" minOccurs="0"
     maxOccurs="unbounded" processContents="lax" />
 </xsd:sequence>
 <xsd:attribute name="package" type="xsd:string" use="required" />
 <xsd:anyAttribute namespace="##other" processContents="lax" />
</xsd:complexType>

<xsd:element name="country-code" type="country-codeType" />

<xsd:complexType name="required-h248-codesType">
 <xsd:complexContent>
  <xsd:extension base="Tcore">
   <xsd:sequence>
     <xsd:element ref="h248-code"
        minOccurs="0" maxOccurs="unbounded" />
      <xsd:any namespace="##other" minOccurs="0"
       maxOccurs="unbounded" processContents="lax" />
   </xsd:sequence>
   <xsd:anyAttribute namespace="##other" processContents="lax" />
  </xsd:extension>
 </xsd:complexContent>
</xsd:complexType>

<xsd:element name="h248-codes"
   type="required-h248-codesType" />

<xsd:complexType name="h248-codeType" mixed="true">
 <xsd:sequence>
    <xsd:any namespace="##other" minOccurs="0"
     maxOccurs="unbounded" processContents="lax" />
 </xsd:sequence>
 <xsd:attribute name="package" type="xsd:string" use="required" />
 <xsd:anyAttribute namespace="##other" processContents="lax" />
</xsd:complexType>

<xsd:element name="h248-code" type="h248-codeType" />

<!--  asr-tts -->

<xsd:complexType name="asr-ttsType">
 <xsd:complexContent>
  <xsd:extension base="Tcore">
   <xsd:sequence>

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      <xsd:element ref="asr-support"
        minOccurs="0" maxOccurs="1" />
      <xsd:element ref="tts-support"
        minOccurs="0" maxOccurs="1" />
      <xsd:any namespace="##other" minOccurs="0"
        maxOccurs="unbounded" processContents="lax" />
   </xsd:sequence>
   <xsd:anyAttribute namespace="##other" processContents="lax" />
  </xsd:extension>
 </xsd:complexContent>
</xsd:complexType>

<xsd:element name="asr-tts" type="asr-ttsType" />

<xsd:complexType name="asr-supportType">
 <xsd:complexContent>
  <xsd:extension base="Tcore">
   <xsd:sequence>
     <xsd:element ref="language"
        minOccurs="0" maxOccurs="unbounded" />
      <xsd:any namespace="##other" minOccurs="0"
       maxOccurs="unbounded" processContents="lax" />
   </xsd:sequence>
   <xsd:anyAttribute namespace="##other" processContents="lax" />
  </xsd:extension>
 </xsd:complexContent>
</xsd:complexType>

<xsd:element name="asr-support" type="asr-supportType" />

<xsd:complexType name="tts-supportType">
 <xsd:complexContent>
  <xsd:extension base="Tcore">
   <xsd:sequence>
     <xsd:element ref="language"
        minOccurs="0" maxOccurs="unbounded" />
      <xsd:any namespace="##other" minOccurs="0"
       maxOccurs="unbounded" processContents="lax" />
   </xsd:sequence>
   <xsd:anyAttribute namespace="##other" processContents="lax" />
  </xsd:extension>
 </xsd:complexContent>
</xsd:complexType>

<xsd:element name="tts-support" type="tts-supportType" />

<xsd:complexType name="languageType">
 <xsd:complexContent>

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  <xsd:extension base="Tcore">
   <xsd:sequence>
      <xsd:any namespace="##other" minOccurs="0"
       maxOccurs="unbounded" processContents="lax" />
   </xsd:sequence>
   <xsd:attribute ref="xml:lang" />
   <xsd:anyAttribute namespace="##other" processContents="lax" />
  </xsd:extension>
 </xsd:complexContent>
</xsd:complexType>

<xsd:element name="language" type="languageType" />


<!--  vxml -->

<xsd:complexType name="vxmlType">
  <xsd:complexContent>
   <xsd:extension base="Tcore">
    <xsd:sequence>
      <xsd:element ref="vxml-mode"
        minOccurs="0" maxOccurs="unbounded" />
       <xsd:any namespace="##other" minOccurs="0"
        maxOccurs="unbounded" processContents="lax" />
    </xsd:sequence>
    <xsd:anyAttribute namespace="##other" processContents="lax" />
   </xsd:extension>
  </xsd:complexContent>
</xsd:complexType>

<xsd:element name="vxml" type="vxmlType" />

<xsd:complexType name="vxml-modeType">
  <xsd:complexContent>
   <xsd:extension base="Tcore">
    <xsd:sequence>
       <xsd:any namespace="##other" minOccurs="0"
        maxOccurs="unbounded" processContents="lax" />
    </xsd:sequence>
    <xsd:attribute name="package" type="xsd:string" use="required" />
    <xsd:attribute name="require" type="vxml.datatype" use="required" />
    <xsd:anyAttribute namespace="##other" processContents="lax" />
   </xsd:extension>
  </xsd:complexContent>
</xsd:complexType>

<xsd:element name="vxml-mode" type="vxml-modeType" />

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<!--  location -->

<xsd:complexType name="locationType">
  <xsd:complexContent>
   <xsd:extension base="Tcore">
    <xsd:sequence>
       <xsd:element ref="ca:civicAddress"
                        minOccurs="1" maxOccurs="1" />
       <xsd:any namespace="##other" minOccurs="0"
        maxOccurs="unbounded" processContents="lax" />
    </xsd:sequence>
    <xsd:anyAttribute namespace="##other" processContents="lax" />
   </xsd:extension>
  </xsd:complexContent>
 </xsd:complexType>

<xsd:element name="location" type="locationType" />


<!--  encryption -->

 <xsd:complexType name="encryptionType">
  <xsd:complexContent>
   <xsd:extension base="Tcore">
    <xsd:sequence>
       <xsd:any namespace="##other" minOccurs="0"
        maxOccurs="unbounded" processContents="lax" />
    </xsd:sequence>
    <xsd:anyAttribute namespace="##other" processContents="lax" />
   </xsd:extension>
  </xsd:complexContent>
 </xsd:complexType>

 <xsd:element name="encryption" type="encryptionType" />

<!--  application-data -->

<xsd:element name="application-data" type="appdata.datatype" />

<!--  max-prepared-duration -->

<xsd:complexType name="max-prepared-durationType">
  <xsd:complexContent>
   <xsd:extension base="Tcore">
    <xsd:sequence>
      <xsd:element ref="max-time" />
       <xsd:any namespace="##other" minOccurs="0"
        maxOccurs="unbounded" processContents="lax" />

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    </xsd:sequence>
    <xsd:anyAttribute namespace="##other" processContents="lax" />
   </xsd:extension>
  </xsd:complexContent>
</xsd:complexType>

<xsd:element name="max-prepared-duration"
  type="max-prepared-durationType" />


<xsd:complexType name="max-timeType">
  <xsd:complexContent>
   <xsd:extension base="Tcore">
    <xsd:sequence>
      <xsd:element name="max-time-package" type="xsd:string" />
       <xsd:any namespace="##other" minOccurs="0"
        maxOccurs="unbounded" processContents="lax" />
    </xsd:sequence>
    <xsd:attribute name="max-time-seconds" type="xsd:nonNegativeInteger"
     use="required" />
    <xsd:anyAttribute namespace="##other" processContents="lax" />
   </xsd:extension>
  </xsd:complexContent>
</xsd:complexType>

<xsd:element name="max-time" type="max-timeType" />


<!--  file-transfer-modes -->

<xsd:complexType name="file-transfer-modesType">
  <xsd:complexContent>
   <xsd:extension base="Tcore">
    <xsd:sequence>
      <xsd:element ref="file-transfer-mode"
        minOccurs="0" maxOccurs="unbounded" />
       <xsd:any namespace="##other" minOccurs="0"
        maxOccurs="unbounded" processContents="lax" />
    </xsd:sequence>
    <xsd:anyAttribute namespace="##other" processContents="lax" />
   </xsd:extension>
  </xsd:complexContent>
</xsd:complexType>

<xsd:element name="file-transfer-modes"
             type="file-transfer-modesType" />

<xsd:complexType name="file-transfer-modeType">

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  <xsd:complexContent>
   <xsd:extension base="Tcore">
    <xsd:sequence>
       <xsd:any namespace="##other" minOccurs="0"
        maxOccurs="unbounded" processContents="lax" />
    </xsd:sequence>
    <xsd:attribute name="name" type="transfermode.datatype"
     use="required" />
    <xsd:attribute name="package" type="xsd:string" use="required" />
    <xsd:anyAttribute namespace="##other" processContents="lax" />
   </xsd:extension>
  </xsd:complexContent>
</xsd:complexType>

<xsd:element name="file-transfer-mode" type="file-transfer-modeType" />

<!--  mixers -->

<xsd:complexType name="mixerssessionsType">
  <xsd:complexContent>
   <xsd:extension base="Tcore">
    <xsd:sequence>
      <xsd:element ref="mix" minOccurs="0"
        maxOccurs="unbounded" />
       <xsd:any namespace="##other" minOccurs="0"
        maxOccurs="unbounded" processContents="lax" />
    </xsd:sequence>
    <xsd:anyAttribute namespace="##other" processContents="lax" />
   </xsd:extension>
  </xsd:complexContent>
</xsd:complexType>

<xsd:element name="mixers" type="mixerssessionsType" />

<xsd:complexType name="mixType">
  <xsd:complexContent>
   <xsd:extension base="Tcore">
    <xsd:sequence>
      <xsd:element ref="rtp-codec" minOccurs="0"
        maxOccurs="unbounded" />
       <xsd:any namespace="##other" minOccurs="0"
        maxOccurs="unbounded" processContents="lax" />
    </xsd:sequence>
    <xsd:attribute name="users" type="xsd:nonNegativeInteger"
     use="required" />
    <xsd:anyAttribute namespace="##other" processContents="lax" />
   </xsd:extension>
  </xsd:complexContent>

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</xsd:complexType>

<xsd:element name="mix" type="mixType" />

<!--  mixing-modes -->

<xsd:complexType name="mixing-modesType">
 <xsd:complexContent>
  <xsd:extension base="Tcore">
   <xsd:sequence>
      <xsd:element ref="audio-mixing-modes"
        minOccurs="0" maxOccurs="1" />
      <xsd:element ref="video-mixing-modes"
        minOccurs="0" maxOccurs="1" />
      <xsd:any namespace="##other" minOccurs="0"
        maxOccurs="unbounded" processContents="lax" />
   </xsd:sequence>
   <xsd:anyAttribute namespace="##other" processContents="lax" />
  </xsd:extension>
 </xsd:complexContent>
</xsd:complexType>

<xsd:element name="mixing-modes" type="mixing-modesType" />

<xsd:complexType name="audio-mixing-modesType">
 <xsd:complexContent>
  <xsd:extension base="Tcore">
   <xsd:sequence>
     <xsd:element ref="audio-mixing-mode"
        minOccurs="0" maxOccurs="unbounded" />
      <xsd:any namespace="##other" minOccurs="0"
       maxOccurs="unbounded" processContents="lax" />
   </xsd:sequence>
   <xsd:anyAttribute namespace="##other" processContents="lax" />
  </xsd:extension>
 </xsd:complexContent>
</xsd:complexType>

<xsd:element name="audio-mixing-modes" type="audio-mixing-modesType" />

<xsd:complexType name="audio-mixing-modeType" mixed="true">
 <xsd:sequence>
    <xsd:any namespace="##other" minOccurs="0"
     maxOccurs="unbounded" processContents="lax" />
 </xsd:sequence>
 <xsd:attribute name="package" type="xsd:string" use="required" />
 <xsd:anyAttribute namespace="##other" processContents="lax" />
</xsd:complexType>

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<xsd:element name="audio-mixing-mode" type="audio-mixing-modeType" />

<xsd:complexType name="video-mixing-modesType">
 <xsd:complexContent>
  <xsd:extension base="Tcore">
   <xsd:sequence>
     <xsd:element ref="video-mixing-mode"
        minOccurs="0" maxOccurs="unbounded" />
      <xsd:any namespace="##other" minOccurs="0"
       maxOccurs="unbounded" processContents="lax" />
   </xsd:sequence>
   <xsd:attribute name="vas" type="boolean.datatype"
     default="false" />
   <xsd:attribute name="activespeakermix" type="boolean.datatype"
     default="false" />
   <xsd:anyAttribute namespace="##other" processContents="lax" />
  </xsd:extension>
 </xsd:complexContent>
</xsd:complexType>

<xsd:element name="video-mixing-modes" type="video-mixing-modesType" />

<xsd:complexType name="video-mixing-modeType" mixed="true">
 <xsd:sequence>
    <xsd:any namespace="##other" minOccurs="0"
     maxOccurs="unbounded" processContents="lax" />
 </xsd:sequence>
 <xsd:attribute name="package" type="xsd:string" use="required" />
 <xsd:anyAttribute namespace="##other" processContents="lax" />
</xsd:complexType>

<xsd:element name="video-mixing-mode" type="video-mixing-modeType" />


<!--
  ####################################################

  DATATYPES

  ####################################################
 -->

<xsd:simpleType name="version.datatype">
  <xsd:restriction base="xsd:NMTOKEN">
   <xsd:enumeration value="1.0" />
  </xsd:restriction>
</xsd:simpleType>

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<xsd:simpleType name="id.datatype">
  <xsd:restriction base="xsd:NMTOKEN" />
</xsd:simpleType>

<xsd:simpleType name="status.datatype">
  <xsd:restriction base="xsd:positiveInteger">
   <xsd:pattern value="[0-9][0-9][0-9]" />
  </xsd:restriction>
</xsd:simpleType>

<xsd:simpleType name="transfermode.datatype">
  <xsd:restriction base="xsd:NMTOKEN"/>
</xsd:simpleType>

<xsd:simpleType name="action.datatype">
  <xsd:restriction base="xsd:NMTOKEN">
   <xsd:enumeration value="remove" />
   <xsd:enumeration value="update" />
  </xsd:restriction>
</xsd:simpleType>

<xsd:simpleType name="dtmf.datatype">
  <xsd:restriction base="xsd:NMTOKEN"/>
</xsd:simpleType>

<xsd:simpleType name="boolean.datatype">
  <xsd:restriction base="xsd:NMTOKEN">
   <xsd:enumeration value="true" />
   <xsd:enumeration value="false" />
  </xsd:restriction>
</xsd:simpleType>

<xsd:simpleType name="vxml.datatype">
  <xsd:restriction base="xsd:NMTOKEN"/>
</xsd:simpleType>

<xsd:simpleType name="appdata.datatype">
  <xsd:restriction base="xsd:string" />
 </xsd:simpleType>

</xsd:schema>

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12.  Security Considerations

   The MRB network entity has two primary interfaces -- Publish and
   Consumer -- that carry sensitive information and must therefore be
   appropriately protected and secured.

   The Publish interface, as defined in and described in Section 5.1,
   uses the Media Control Channel Framework [RFC6230] as a mechanism to
   connect an MRB to a Media Server.  It is very important that the
   communication between the MRB and the Media Server is secured: a
   malicious entity may change or even delete subscriptions to a Media
   Server, thus affecting the view the MRB has of the resources actually
   available on a Media Server, leading it to incorrect selection when
   media resources are being requested by an Application Server.  A
   malicious entity may even manipulate available resources on a Media
   Server, for example, to make the MRB think no resources are available
   at all.  Considering that the Publish interface is a CFW Control
   Package, the same security considerations included in the Media
   Control Channel Framework specification apply here to protect
   interactions between an MRB and a Media Server.

   The Publish interface also allows a Media Server, as explained in
   Section 5.1.5.18, to provide more or less accurate information about
   its geographic location, should Application Servers be interested in
   such details when looking for services at an MRB.  While the usage of
   this information is entirely optional and the level of detail to be
   provided is implementation specific, it is important to draw
   attention to the potential security issues that the disclosure of
   such addresses may introduce.  As such, it is important to make sure
   MRB implementations don't disclose this information as is to
   interested Application Servers but only exploit those addresses as
   part of computation algorithms to pick the most adequate resources
   Application Servers may be looking for.

   The Consumer interface, as defined in and described in Section 5.2,
   conceives transactions based on a session ID.  These transactions may
   be transported either by means of HTTP messages or SIP dialogs.  This
   means that malicious users could be able to disrupt or manipulate an
   MRB session should they have access to the above-mentioned session ID
   or replicate it somehow: for instance, a malicious entity could
   modify an existing session between an Application Server and the MRB,
   e.g., requesting less resources than originally requested to cause
   media dialogs to be rejected by the Application Server, or requesting
   many more resources instead to try and lock as many of (if not all)
   the resources an MRB can provide, thus making them unavailable to
   other legitimate Application Servers in subsequent requests.  In
   order to prevent this, it is strongly advised that MRB
   implementations generate session identifiers that are very hard to

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   replicate, in order to minimize the chances that malicious users
   could gain access to valid identifiers by just guessing or by means
   of brute-force attacks.  It is very important, of course, to also
   secure the way that these identifiers are transported by the involved
   parties, in both requests and responses, in order to prevent network
   attackers from intercepting Consumer messages and having access to
   session IDs.  The Consumer interface uses either the Hypertext
   Transfer Protocol (HTTP) or the Session Initiation Protocol (SIP) as
   the mechanism for clients to connect to an MRB to request media
   resources.  In the case where HTTP is used, any binding using the
   Consumer interface MUST be capable of being transacted over Transport
   Layer Security (TLS), as described in RFC 2818 [RFC2818].  In the
   case where SIP is used, the same security considerations included in
   the Media Control Channel Framework specification apply here to
   protect interactions between a client requesting media resources and
   an MRB.

   Should a valid session ID be compromised somehow (that is,
   intercepted or just guessed by a malicious user), as a further means
   to prevent disruption the Consumer interface also prescribes the use
   of a sequence number in its transactions.  This sequence number is to
   be increased after each successful transaction, starting from a first
   value randomly generated by the MRB when the session is first
   created, and it must match in every request/response.  While this
   adds complexity to the protocol (implementations must pay attention
   to those sequence numbers, since wrong values will cause "Wrong
   sequence number" errors and the failure of the related requests), it
   is an important added value for security.  In fact, considering that
   different transactions related to the same session could be
   transported in different, unrelated HTTP messages (or SIP INVITEs in
   cases where the In-line mode is being used), this sequence number
   protection prevents the chances of session replication or disruption,
   especially in cases where the session ID has been compromised: that
   is, it should make it harder for malicious users to manipulate or
   remove a session for which they have obtained the session ID.  It is
   strongly advised that the MRB doesn't choose 1 as the first sequence
   number for a new session but rather picks a random value to start
   from.  The reaction to transactions that are out of sequence is left
   to MRB implementations: a related error code is available, but
   implementations may decide to enforce further limitations or actions
   upon the receipt of too many failed attempts in a row or of what
   looks like blatant attempts to guess what the current, valid sequence
   number is.

   It is also worth noting that in In-line mode (both IAMM and IUMM) the
   MRB may act as a Back-to-Back User Agent (B2BUA).  This means that
   when acting as a B2BUA the MRB may modify SIP bodies: it is the case,
   for instance, for the IAMM handling multipart/mixed payloads.  This

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   impacts the ability to use any SIP security feature that protects the
   body (e.g., RFC 4474 [RFC4474], S/MIME, etc.), unless the MRB acts as
   a mediator for the security association.  This should be taken into
   account when implementing an MRB compliant with this specification.

   Both the Publishing interface and Consumer interface may address the
   location of a Media Server: the Publishing interface may be used to
   inform the MRB where a Media Server is located (approximately or
   precisely), and the Consumer interface may be used to ask for a Media
   Server located somewhere in a particular region (e.g., a conference
   bridge close to San Francisco).  Both Media Server and MRB
   implementers need to take this into account when deciding whether or
   not to make this location information available, and if so how many
   bits of information really need to be made available for brokering
   purposes.

   It is worthwhile to cover authorization issues related to this
   specification.  Neither the Publishing interface nor the Consumer
   interface provides an explicit means for implementing authentication,
   i.e., they do not contain specific protocol interactions to ensure
   that authorized Application Servers can make use of the services
   provided by an MRB instance.  Considering that both interfaces are
   transported using well-established protocols (HTTP, SIP, CFW),
   support for such functionality can be expressed by means of the
   authentication mechanisms provided by the protocols themselves.
   Therefore, any MRB-aware entity (Application Servers, Media Servers,
   MRBs themselves) MUST support HTTP and SIP Digest access
   authentication.  The usage of such Digest access authentications is
   recommended and not mandatory, which means MRB-aware entities MAY
   exploit it in deployment.

   An MRB may want to enforce further constraints on the interactions
   between an Application Server/Media Server and an MRB.  For example,
   it may choose to only accept requests associated with a specific
   session ID from the IP address that originated the first request or
   may just make use of pre-shared certificates to assess the identity
   of legitimate Application Servers and/or Media Servers.

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13.  IANA Considerations

   There are several IANA considerations associated with this
   specification.

13.1.  Media Control Channel Framework Package Registration

   This section registers a new Media Control Channel Framework package,
   per the instructions in Section 13.1 of [RFC6230].

   Package Name:  mrb-publish/1.0

   Published Specification(s):  RFC 6917

   Person and email address to contact for further information:  IETF
      MediaCtrl working group (mediactrl@ietf.org), Chris Boulton
      (chris@ns-technologies.com).

13.2.  application/mrb-publish+xml Media Type

   To:  application

   Subject:  Registration of media type application/mrb-publish+xml

   Type name:  application

   Subtype name:  mrb-publish+xml

   Required parameters:  none

   Optional parameters:  Same as charset parameter of application/xml as
      specified in RFC 3023 [RFC3023].

   Encoding considerations:  Same as encoding considerations of
      application/xml as specified in RFC 3023 [RFC3023].

   Security considerations:  See Section 10 of RFC 3023 [RFC3023] and
      Section 12 of RFC 6917.

   Interoperability considerations:  none.

   Published specification:  Section 10 of RFC 6917.

   Applications that use this media type:  This media type is used to
      support a Media Resource Broker (MRB) entity.

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   Additional Information:

      Magic Number:  None

      File Extension:  .xdf

      Macintosh file type code:  "TEXT"

   Person and email address to contact for further information:  Chris
      Boulton (chris@ns-technologies.com).

   Intended usage: COMMON

   Author/Change controller:  The IETF.

13.3.  application/mrb-consumer+xml Media Type

   To:  application

   Subject:  Registration of media type application/mrb-consumer+xml

   Type name:  application

   Subtype name:  mrb-consumer+xml

   Mandatory parameters:  none

   Optional parameters:  Same as charset parameter of application/xml as
      specified in RFC 3023 [RFC3023].

   Encoding considerations:  Same as encoding considerations of
      application/xml as specified in RFC 3023 [RFC3023].

   Security considerations:  See Section 10 of RFC 3023 [RFC3023] and
      Section 12 of RFC 6917.

   Interoperability considerations:  none.

   Published specification:  Section 11 of RFC 6917.

   Applications that use this media type:  This media type is used to
      support a Media Resource Broker (MRB) entity.

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   Additional Information:

      Magic Number:  None

      File Extension:  .xdf

      Macintosh file type code:  "TEXT"

   Person and email address to contact for further information:  Chris
      Boulton (chris@ns-technologies.com).

   Intended usage: COMMON

   Author/Change controller:  The IETF.

13.4.  URN Sub-Namespace Registration for mrb-publish

   IANA has registered the URN "urn:ietf:params:xml:ns:mrb-publish",
   with the ID of "mrb-publish".  The schema of the XML namespace named
   urn:ietf:params:xml:ns:mrb-publish is in Section 10.

13.5.  URN Sub-Namespace Registration for mrb-consumer

   IANA has registered the URN "urn:ietf:params:xml:ns:mrb-consumer",
   with the ID of "mrb-consumer".  The schema of the XML namespace named
   urn:ietf:params:xml:ns:mrb-consumer is in Section 11.

13.6.  XML Schema Registration for mrb-publish

   IANA has registered the schema for mrb-publish:

   URI:  urn:ietf:params:xml:schema:mrb-publish

   ID:  mrb-publish

   Filename:  mrb-publish

   Registrant Contact:  IETF MediaCtrl working group
      (mediactrl@ietf.org)

   Schema:  The XML for the schema is in Section 10 of this document.

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13.7.  XML Schema Registration for mrb-consumer

   Please register the schema for mrb-consumer:

   URI:  urn:ietf:params:xml:schema:mrb-consumer

   ID:  mrb-consumer

   Filename:  mrb-consumer

   Registrant Contact:  IETF MediaCtrl working group
      (mediactrl@ietf.org)

   Schema:  The XML for the schema is in Section 11 of this document.

14.  Acknowledgements

   The authors would like to thank the members of the Publish Interface
   design team, who provided valuable input into this document.  The
   design team consisted of Adnan Saleem, Michael Trank, Victor
   Paulsamy, Martin Dolly, and Scott McGlashan.  The authors would also
   like to thank John Dally, Bob Epley, Simon Romano, Henry Lum,
   Christian Groves, and Jonathan Lennox for input into this
   specification.

   Ben Campbell carried out the RAI expert review on an early version of
   this specification and provided a great deal of invaluable input.

15.  References

15.1.  Normative References

   [ISO.10646.2012]
              International Organization for Standardization,
              "Information technology -- Universal Coded Character Set
              (UCS)", ISO Standard 10646, 2012.

   [ISO.3166-1]
              International Organization for Standardization, "Codes for
              the representation of names of countries and their
              subdivisions - Part 1: Country codes", ISO Standard
              3166-1:2006, 2006.

   [ISO.639.2002]
              International Organization for Standardization, "Codes for
              the representation of names of languages -- Part 1:
              Alpha-2 code", ISO Standard 639, 2002.

Top      Up      ToC       Page 134 
   [ITU-T.Q.1950]
              International Telecommunication Union, "Bearer independent
              call bearer control protocol", ITU-T Recommendation
              Q.1950, December 2002.

   [RFC2046]  Freed, N. and N. Borenstein, "Multipurpose Internet Mail
              Extensions (MIME) Part Two: Media Types", RFC 2046,
              November 1996.

   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", BCP 14, RFC 2119, March 1997.

   [RFC2616]  Fielding, R., Gettys, J., Mogul, J., Frystyk, H.,
              Masinter, L., Leach, P., and T. Berners-Lee, "Hypertext
              Transfer Protocol -- HTTP/1.1", RFC 2616, June 1999.

   [RFC3023]  Murata, M., St. Laurent, S., and D. Kohn, "XML Media
              Types", RFC 3023, January 2001.

   [RFC3261]  Rosenberg, J., Schulzrinne, H., Camarillo, G., Johnston,
              A., Peterson, J., Sparks, R., Handley, M., and E.
              Schooler, "SIP: Session Initiation Protocol", RFC 3261,
              June 2002.

   [RFC3311]  Rosenberg, J., "The Session Initiation Protocol (SIP)
              UPDATE Method", RFC 3311, October 2002.

   [RFC3711]  Baugher, M., McGrew, D., Naslund, M., Carrara, E., and K.
              Norrman, "The Secure Real-time Transport Protocol (SRTP)",
              RFC 3711, March 2004.

   [RFC5139]  Thomson, M. and J. Winterbottom, "Revised Civic Location
              Format for Presence Information Data Format Location
              Object (PIDF-LO)", RFC 5139, February 2008.

   [RFC5763]  Fischl, J., Tschofenig, H., and E. Rescorla, "Framework
              for Establishing a Secure Real-time Transport Protocol
              (SRTP) Security Context Using Datagram Transport Layer
              Security (DTLS)", RFC 5763, May 2010.

   [W3C.REC-xmlschema-1-20041028]
              Thompson, H., Beech, D., Maloney, M., and N. Mendelsohn,
              "XML Schema Part 1: Structures Second Edition", World Wide
              Web Consortium Recommendation REC-xmlschema-1-20041028,
              October 2004,
              <http://www.w3.org/TR/2004/REC-xmlschema-1-20041028>.

Top      Up      ToC       Page 135 
   [W3C.REC-xmlschema-2-20041028]
              Biron, P. and A. Malhotra, "XML Schema Part 2: Datatypes
              Second Edition", World Wide Web Consortium
              Recommendation REC-xmlschema-2-20041028, October 2004,
              <http://www.w3.org/TR/2004/REC-xmlschema-2-20041028>.

15.2.  Informative References

   [RFC2818]  Rescorla, E., "HTTP Over TLS", RFC 2818, May 2000.

   [RFC4240]  Burger, E., Van Dyke, J., and A. Spitzer, "Basic Network
              Media Services with SIP", RFC 4240, December 2005.

   [RFC4474]  Peterson, J. and C. Jennings, "Enhancements for
              Authenticated Identity Management in the Session
              Initiation Protocol (SIP)", RFC 4474, August 2006.

   [RFC4733]  Schulzrinne, H. and T. Taylor, "RTP Payload for DTMF
              Digits, Telephony Tones, and Telephony Signals", RFC 4733,
              December 2006.

   [RFC5022]  Van Dyke, J., Burger, E., and A. Spitzer, "Media Server
              Control Markup Language (MSCML) and Protocol", RFC 5022,
              September 2007.

   [RFC5167]  Dolly, M. and R. Even, "Media Server Control Protocol
              Requirements", RFC 5167, March 2008.

   [RFC5552]  Burke, D. and M. Scott, "SIP Interface to VoiceXML Media
              Services", RFC 5552, May 2009.

   [RFC5567]  Melanchuk, T., "An Architectural Framework for Media
              Server Control", RFC 5567, June 2009.

   [RFC5707]  Saleem, A., Xin, Y., and G. Sharratt, "Media Server Markup
              Language (MSML)", RFC 5707, February 2010.

   [RFC6230]  Boulton, C., Melanchuk, T., and S. McGlashan, "Media
              Control Channel Framework", RFC 6230, May 2011.

   [RFC6231]  McGlashan, S., Melanchuk, T., and C. Boulton, "An
              Interactive Voice Response (IVR) Control Package for the
              Media Control Channel Framework", RFC 6231, May 2011.

   [RFC6381]  Gellens, R., Singer, D., and P. Frojdh, "The 'Codecs' and
              'Profiles' Parameters for "Bucket" Media Types", RFC 6381,
              August 2011.

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   [RFC6501]  Novo, O., Camarillo, G., Morgan, D., and J. Urpalainen,
              "Conference Information Data Model for Centralized
              Conferencing (XCON)", RFC 6501, March 2012.

   [RFC6505]  McGlashan, S., Melanchuk, T., and C. Boulton, "A Mixer
              Control Package for the Media Control Channel Framework",
              RFC 6505, March 2012.

Authors' Addresses

   Chris Boulton
   NS-Technologies

   EMail: chris@ns-technologies.com


   Lorenzo Miniero
   Meetecho
   Via Carlo Poerio 89
   Napoli  80100
   Italy

   EMail: lorenzo@meetecho.com


   Gary Munson
   AT&T
   200 Laurel Avenue South
   Middletown, New Jersey  07748
   USA

   EMail: gamunson@gmail.com