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725 lines
26 KiB
XML
725 lines
26 KiB
XML
<?xml version='1.0' encoding='UTF-8'?>
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<!DOCTYPE xep SYSTEM 'xep.dtd' [
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<!ENTITY % ents SYSTEM 'xep.ent'>
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%ents;
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]>
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<?xml-stylesheet type='text/xsl' href='xep.xsl'?>
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<xep>
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<header>
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<title>Delivering Conference Information to Jingle Participants (Coin)</title>
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<abstract>This specification defines an XMPP extension for tightly coupled
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conference calls. It allows users who participate in multiparty Jingle
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calls via a focus agent (mixer) to retrieve information and receive
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notifications about the state of the call and the other participants.
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This extension is also meant to provide a straightforward way of
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connecting SIP and XMPP clients to the same conference room.
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</abstract>
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&LEGALNOTICE;
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<number>0298</number>
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<status>Deferred</status>
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<type>Standards Track</type>
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<sig>Standards</sig>
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<approver>Council</approver>
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<dependencies>
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<spec>XEP-0167</spec>
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</dependencies>
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<supersedes />
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<supersededby />
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<shortname>coin</shortname>
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<author>
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<firstname>Emil</firstname>
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<surname>Ivov</surname>
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<email>emcho@jitsi.org</email>
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<jid>emcho@sip-communicator.org</jid>
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</author>
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<author>
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<firstname>Enrico</firstname>
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<surname>Marocco</surname>
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<email>enrico.marocco@telecomitalia.it</email>
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<jid>enrico@tilab.com </jid>
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</author>
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<discuss>jingle</discuss>
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<revision>
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<version>0.1</version>
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<date>2011-06-09</date>
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<initials>psa</initials>
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<remark><p>Initial published version.</p></remark>
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</revision>
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<revision>
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<version>0.0.1</version>
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<date>2011-06-09</date>
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<initials>ei/em</initials>
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<remark>
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<p>First draft.</p>
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</remark>
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</revision>
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</header>
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<section1 topic='Introduction' anchor='intro'>
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<p>&xep0166; defines a way for XMPP agents to establish and control
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one-to-one media sessions. It is possible for either participant in such a
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session to also establish additional conversations and then serve as a
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media mixer. This could be viewed as a classic conference call scenario
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and is also often referred to as a tightly coupled conference.</p>
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<p>Basic participation or hosting of tightly coupled conferences requires
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no specific protocol support. With the exception of the mixing agent, call
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members, however, all perceive the session as a regular one-to-one call.
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They have no way of obtaining additional information about how many and what
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other users are participating.</p>
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<p>The Coin extension (short for Conference Information) allows media
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mixers to deliver to participants additional information about the status
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of the call, and that of its members.</p>
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<p>A conference participant exchanges Coin IQs only with the agent they
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have established a session with. This means that it can also be used in
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cases where only a subset of the users on a call are using XMPP while others
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are connected via alternative mechanisms such as SIP's conference
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package &rfc4575;</p>
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</section1>
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<section1 topic='Terminology' anchor='terms'>
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<dl>
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<di>
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<dt>Mixer</dt>
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<dd>Throughout this document the term is used to depict an entity that is
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responsible for mixing and delivering to conference participants both
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signalling and media. Other specifications refer to mixers and focus
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agents as two distinct entities but we find this separation to be
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unnecessary in the current specification and view both as a single logical
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entity</dd>
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</di>
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</dl>
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</section1>
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<section1 topic='Requirements' anchor='reqs'>
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<p>The extension defined herein is designed to meet the following
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requirements:</p>
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<ol>
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<li>Provide a means for mixer agents in tightly coupled
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conferences to advertise call and member state information to the call
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participants.</li>
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<li>Reuse as much as possible the existing format and XML schema already
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defined in <cite>RFC 4575</cite>.</li>
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<li>Impose no requirements on agents joining the call other than those
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necessary to establish a regular one-to-one call.</li>
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<li>Allow straightforward interoperability with other conferencing
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mechanisms such as <cite>RFC 4575</cite>; or &xep0272;</li>
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</ol>
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</section1>
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<section1 topic='How It Works' anchor='howitworks'>
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<p>This section provides a friendly introduction to Coin.</p>
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<p>In essence Coin allows clients that establish Jingle calls to
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determine whether their peer is acting as a mixer or to announce themselves
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as such. This way non-mixer participants would know when they are
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participating in a conference call and would be able to notify the user
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accordingly.</p>
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<p>Once in a call, call members and mixers can use Coin to exchange
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<cite>RFC 4575</cite> conference information indicating what participants
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are currently on the call and what their status is.</p>
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</section1>
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<section1 topic='Creating a conference call' anchor='call-create'>
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<p>When creating conference calls mixers SHOULD indicate the nature of the
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call as early as possible. This is necessary in order to allow other
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participating user agents to adapt their user interface in an appropriate
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way.</p>
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<code caption="A mixer sends session-initiate for a conference call">
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<![CDATA[
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<iq from='romeo@montague.lit/orchard'
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id='zid615d9'
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to='juliet@capulet.lit/balcony'
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type='set'>
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<jingle xmlns='urn:xmpp:jingle:1'>
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action='session-initiate'
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initiator='romeo@montague.lit/orchard'
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sid='a73sjjvkla37jfea'>
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<content creator='initiator' name='this-is-a-stub'>
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<description xmlns='urn:xmpp:jingle:apps:stub:0'/>
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<transport xmlns='urn:xmpp:jingle:transports:stub:0'/>
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</content>
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<conference-info isfocus='true'/>
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</jingle>
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</iq>
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]]></code>
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<p>Similarly mixers being dialed by new participants SHOULD indicate the
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nature of the call by including the <conference-info/> element into
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the Jingle session-accept message.</p>
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<p>Finally, when transforming an existing one-to-one session into a
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conference or vice-versa a mixer SHOULD send a Jingle session-info message
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with the appropriate <conference-info/> element. </p>
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<p>Note that presence of the <conference-info/> element is only
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determines whether the party sending it is currently acting as a mixer or
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not. If multiple peers in a call are independently acting as mixers they
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should all indicate their status accordingly.</p>
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</section1>
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<section1 topic='Delivering conference information' anchor='coin-delivery'>
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<p>Once a conference call has been established and advertised as such, a
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mixer MAY at any point send information describing the state of the call and
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its current participants.</p>
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<code caption="Mixer sends information about the current state of the call">
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<![CDATA[
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<iq from='romeo@montague.lit/orchard'
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id='zid615d9'
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to='juliet@capulet.lit/balcony'
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type='set'>
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<conference-info xmlns="urn:ietf:params:xml:ns:conference-info"
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entity="xmpp:romeo@monague.lit/orchard"
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state="full"
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version="1">
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<!-- CONFERENCE INFO -->
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<conference-description>
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<subject>Ending a relationship</subject>
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</conference-description>
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<!-- CONFERENCE STATE -->
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<conference-state>
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<user-count>3</user-count>
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</conference-state>
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<!-- USERS -->
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<users>
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<user entity="xmpp:romeo@montague.lit" state="full">
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<display-text>Romeo</display-text>
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<!-- ENDPOINTS -->
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<endpoint entity="xmpp:romeo@montague.lit/orchard">
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<display-text>Romeo's smartphone</display-text>
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<status>disconnected</status>
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<disconnection-info>
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<when>2011-01-31T20:00:00Z</when>
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<reason>poisoned</reason>
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</disconnection-info>
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<!-- MEDIA -->
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<media id="1">
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<display-text>main audio</display-text>
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<type>audio</type>
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<src-id>432424</src-id>
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</media>
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</endpoint>
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</user>
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<user entity="xmpp:juliet@capulet.lit" state="full">
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<display-text>Romeo</display-text>
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<!-- ENDPOINTS -->
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<endpoint entity="juliet@capulet.lit/balcony/orchard">
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<display-text>Juliet's netbook</display-text>
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<status>connected</status>
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<!-- MEDIA -->
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<media id="1">
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<type>audio</type>
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<src-id>2124</src-id>
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</media>
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</endpoint>
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</user>
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<!-- USER -->
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<user entity="sip:alice@example.com" state="full">
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<display-text>Alice</display-text>
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<!-- ENDPOINTS -->
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<endpoint entity="sip:4kfk4j392jsu@example.com;grid=433kj4j3u">
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<status>connected</status>
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<!-- MEDIA -->
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<media id="1">
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<type>audio</type>
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<src-id>534232</src-id>
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</media>
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</endpoint>
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</user>
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</users>
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</conference-info>
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</iq>
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]]></code>
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</section1>
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<section1 topic='Determining Support' anchor='support'>
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<p>If an entity supports Coin, it SHOULD advertise that fact by returning
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a feature of "urn:xmpp:coin" in response to a &xep0030;
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information request.</p>
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<example caption="Service Discovery Information Request"><![CDATA[
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<iq from='kingclaudius@shakespeare.lit/castle'
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id='ku6e51v3'
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to='laertes@shakespeare.lit/castle'
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type='get'>
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<query xmlns='http://jabber.org/protocol/disco#info'/>
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</iq>
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]]></example>
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<example caption="Service Discovery Information Response"><![CDATA[
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<iq from='laertes@shakespeare.lit/castle'
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id='ku6e51v3'
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to='kingclaudius@shakespeare.lit/castle'
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type='result'>
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<query xmlns='http://jabber.org/protocol/disco#info'>
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<feature var='urn:xmpp:coin'/>
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</query>
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</iq>
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]]></example>
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<p>In order for an application to determine whether an entity supports this
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protocol, where possible it SHOULD use the dynamic, presence-based profile
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of service discovery defined in &xep0115;. However, if an application has
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not received entity capabilities information from an entity, it SHOULD use
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explicit service discovery instead.</p>
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</section1>
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<section1 topic='Security Considerations' anchor='security'>
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<p>PENDING: <cite>RFC 4575</cite> mostly talks about authentication
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conference-info subscriptions but these are not part of this specification.
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The authors are hence currently unaware of any other Coin specific security
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considerations</p>
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</section1>
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<section1 topic='Open Issues' anchor='issues'>
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<p>This document provides a basic description of a simple way to support
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tightly coupled conference calls. It is in many respects still a stub and a
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number of open issues require the attention of the community:</p>
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<ol>
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<li>Need to define best practices for user agents to easily determine
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whether the request of user to establish a conference call should result
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in a Muji or a Coin conference.</li>
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</ol>
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</section1>
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<section1 topic='XML Schemas' anchor='schema'>
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<section2 topic='Advertising Conf Calls' anchor='schema-discover'>
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<code><![CDATA[
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<?xml version='1.0' encoding='UTF-8'?>
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<xs:schema
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xmlns:xs='http://www.w3.org/2001/XMLSchema'
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targetNamespace='urn:xmpp:jingle:apps:coin:1'
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xmlns='urn:xmpp:jingle:apps:coin:1'
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elementFormDefault='qualified'>
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<xs:annotation>
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<xs:documentation>
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The protocol documented by this schema is defined in
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XEP-0XXX: http://www.xmpp.org/extensions/xep-0XXX.html
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</xs:documentation>
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</xs:annotation>
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<xs:element name="conference-info" type="empty">
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<xs:complexType>
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<xs:attribute name='isfocus' type='xs:boolean' required='true'/>
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</xs:complexType>
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</xs:element>
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</xs:schema>
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]]></code>
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</section2>
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<section2 topic='Conference Info' anchor='schema-coin'>
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<code><![CDATA[
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<?xml version="1.0" encoding="UTF-8" ?>
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<xs:schema
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targetNamespace="urn:ietf:params:xml:ns:conference-info"
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xmlns:tns="urn:ietf:params:xml:ns:conference-info"
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xmlns:xs="http://www.w3.org/2001/XMLSchema"
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xmlns="urn:ietf:params:xml:ns:conference-info"
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elementFormDefault="qualified"
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attributeFormDefault="unqualified">
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<xs:annotation>
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<xs:documentation>
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The protocol documented by this schema is defined in
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RFC 4575: http://tools.ietf.org/html/rfc4575 and reused by
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XEP XXXX http://www.xmpp.org/extensions/xep-XXXX.html
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</xs:documentation>
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</xs:annotation>
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<!--
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This imports the xml:language definition
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-->
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<xs:import namespace="http://www.w3.org/XML/1998/namespace"
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schemaLocation="http://www.w3.org/2001/03/xml.xsd"/>
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<!--
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CONFERENCE ELEMENT
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-->
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<xs:element name="conference-info" type="conference-type"/>
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<!--
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CONFERENCE TYPE
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-->
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<xs:complexType name="conference-type">
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<xs:sequence>
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<xs:element name="conference-description"
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type="conference-description-type" minOccurs="0"/>
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<xs:element name="host-info"
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type="host-type" minOccurs="0"/>
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<xs:element name="conference-state"
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type="conference-state-type" minOccurs="0"/>
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<xs:element name="users"
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type="users-type" minOccurs="0"/>
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<xs:element name="sidebars-by-ref"
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type="uris-type" minOccurs="0"/>
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<xs:element name="sidebars-by-val"
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type="sidebars-by-val-type" minOccurs="0"/>
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<xs:any namespace="##other" processContents="lax"
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minOccurs="0" maxOccurs="unbounded"/>
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</xs:sequence>
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<xs:attribute name="entity"
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type="xs:anyURI" use="required"/>
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<xs:attribute name="state"
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type="state-type" use="optional" default="full"/>
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<xs:attribute name="version"
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type="xs:unsignedInt" use="optional"/>
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<xs:anyAttribute namespace="##other" processContents="lax"/>
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</xs:complexType>
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<!--
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STATE TYPE
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-->
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<xs:simpleType name="state-type">
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<xs:restriction base="xs:string">
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<xs:enumeration value="full"/>
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<xs:enumeration value="partial"/>
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<xs:enumeration value="deleted"/>
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</xs:restriction>
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</xs:simpleType>
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<!--
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CONFERENCE DESCRIPTION TYPE
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-->
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<xs:complexType name="conference-description-type">
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<xs:sequence>
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<xs:element name="display-text"
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type="xs:string" minOccurs="0"/>
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<xs:element name="subject"
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type="xs:string" minOccurs="0"/>
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<xs:element name="free-text"
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type="xs:string" minOccurs="0"/>
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<xs:element name="keywords"
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type="keywords-type" minOccurs="0"/>
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<xs:element name="conf-uris"
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type="uris-type" minOccurs="0"/>
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<xs:element name="service-uris"
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type="uris-type" minOccurs="0"/>
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<xs:element name="maximum-user-count"
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type="xs:unsignedInt" minOccurs="0"/>
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<xs:element name="available-media"
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type="conference-media-type" minOccurs="0"/>
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<xs:any namespace="##other" processContents="lax"
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minOccurs="0" maxOccurs="unbounded"/>
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</xs:sequence>
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<xs:anyAttribute namespace="##other" processContents="lax"/>
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</xs:complexType>
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<!--
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HOST TYPE
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-->
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<xs:complexType name="host-type">
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<xs:sequence>
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<xs:element name="display-text" type="xs:string"
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minOccurs="0"/>
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<xs:element name="web-page" type="xs:anyURI"
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minOccurs="0"/>
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<xs:element name="uris" type="uris-type"
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minOccurs="0"/>
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<xs:any namespace="##other" processContents="lax"
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minOccurs="0" maxOccurs="unbounded"/>
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</xs:sequence>
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<xs:anyAttribute namespace="##other" processContents="lax"/>
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</xs:complexType>
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<!--
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CONFERENCE STATE TYPE
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-->
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<xs:complexType name="conference-state-type">
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<xs:sequence>
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<xs:element name="user-count" type="xs:unsignedInt"
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minOccurs="0"/>
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<xs:element name="active" type="xs:boolean"
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minOccurs="0"/>
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<xs:element name="locked" type="xs:boolean"
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minOccurs="0"/>
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<xs:any namespace="##other" processContents="lax"
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minOccurs="0" maxOccurs="unbounded"/>
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</xs:sequence>
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<xs:anyAttribute namespace="##other" processContents="lax"/>
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</xs:complexType>
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<!--
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CONFERENCE MEDIA TYPE
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-->
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<xs:complexType name="conference-media-type">
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<xs:sequence>
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<xs:element name="entry" type="conference-medium-type"
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maxOccurs="unbounded"/>
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</xs:sequence>
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<xs:anyAttribute namespace="##other" processContents="lax"/>
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</xs:complexType>
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<!--
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CONFERENCE MEDIUM TYPE
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-->
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<xs:complexType name="conference-medium-type">
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<xs:sequence>
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<xs:element name="display-text" type="xs:string"
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minOccurs="0"/>
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<xs:element name="type" type="xs:string"/>
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<xs:element name="status" type="media-status-type"
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minOccurs="0"/>
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<xs:any namespace="##other" processContents="lax"
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minOccurs="0" maxOccurs="unbounded"/>
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</xs:sequence>
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<xs:attribute name="label" type="xs:string"
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use="required"/>
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<xs:anyAttribute namespace="##other" processContents="lax"/>
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</xs:complexType>
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<!--
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URIs TYPE
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-->
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<xs:complexType name="uris-type">
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<xs:sequence>
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|
<xs:element name="entry" type="uri-type"
|
|
maxOccurs="unbounded"/>
|
|
</xs:sequence>
|
|
<xs:attribute name="state" type="state-type"
|
|
use="optional" default="full"/>
|
|
<xs:anyAttribute namespace="##other" processContents="lax"/>
|
|
</xs:complexType>
|
|
<!--
|
|
URI TYPE
|
|
-->
|
|
<xs:complexType name="uri-type">
|
|
<xs:sequence>
|
|
<xs:element name="uri" type="xs:anyURI"/>
|
|
<xs:element name="display-text" type="xs:string"
|
|
minOccurs="0"/>
|
|
<xs:element name="purpose" type="xs:string"
|
|
minOccurs="0"/>
|
|
<xs:element name="modified" type="execution-type"
|
|
minOccurs="0"/>
|
|
<xs:any namespace="##other" processContents="lax"
|
|
minOccurs="0" maxOccurs="unbounded"/>
|
|
</xs:sequence>
|
|
<xs:anyAttribute namespace="##other" processContents="lax"/>
|
|
</xs:complexType>
|
|
<!--
|
|
KEYWORDS TYPE
|
|
-->
|
|
<xs:simpleType name="keywords-type">
|
|
<xs:list itemType="xs:string"/>
|
|
</xs:simpleType>
|
|
<!--
|
|
USERS TYPE
|
|
-->
|
|
<xs:complexType name="users-type">
|
|
<xs:sequence>
|
|
<xs:element name="user" type="user-type"
|
|
minOccurs="0" maxOccurs="unbounded"/>
|
|
<xs:any namespace="##other" processContents="lax"
|
|
minOccurs="0" maxOccurs="unbounded"/>
|
|
</xs:sequence>
|
|
<xs:attribute name="state" type="state-type"
|
|
use="optional" default="full"/>
|
|
<xs:anyAttribute namespace="##other" processContents="lax"/>
|
|
</xs:complexType>
|
|
<!--
|
|
USER TYPE
|
|
-->
|
|
<xs:complexType name="user-type">
|
|
<xs:sequence>
|
|
<xs:element name="display-text" type="xs:string"
|
|
minOccurs="0"/>
|
|
<xs:element name="associated-aors" type="uris-type"
|
|
minOccurs="0"/>
|
|
<xs:element name="roles" type="user-roles-type"
|
|
minOccurs="0"/>
|
|
<xs:element name="languages" type="user-languages-type"
|
|
minOccurs="0"/>
|
|
<xs:element name="cascaded-focus" type="xs:anyURI"
|
|
minOccurs="0"/>
|
|
<xs:element name="endpoint" type="endpoint-type"
|
|
minOccurs="0" maxOccurs="unbounded"/>
|
|
<xs:any namespace="##other" processContents="lax"
|
|
minOccurs="0" maxOccurs="unbounded"/>
|
|
</xs:sequence>
|
|
<xs:attribute name="entity" type="xs:anyURI"/>
|
|
<xs:attribute name="state" type="state-type"
|
|
use="optional" default="full"/>
|
|
<xs:anyAttribute namespace="##other" processContents="lax"/>
|
|
</xs:complexType>
|
|
<!--
|
|
USER ROLES TYPE
|
|
-->
|
|
<xs:complexType name="user-roles-type">
|
|
<xs:sequence>
|
|
<xs:element name="entry" type="xs:string"
|
|
maxOccurs="unbounded"/>
|
|
</xs:sequence>
|
|
<xs:anyAttribute namespace="##other" processContents="lax"/>
|
|
</xs:complexType>
|
|
<!--
|
|
USER LANGUAGES TYPE
|
|
-->
|
|
<xs:simpleType name="user-languages-type">
|
|
<xs:list itemType="xs:language"/>
|
|
</xs:simpleType>
|
|
<!--
|
|
ENDPOINT TYPE
|
|
-->
|
|
<xs:complexType name="endpoint-type">
|
|
<xs:sequence>
|
|
<xs:element name="display-text" type="xs:string"
|
|
minOccurs="0"/>
|
|
<xs:element name="referred" type="execution-type"
|
|
minOccurs="0"/>
|
|
<xs:element name="status" type="endpoint-status-type"
|
|
minOccurs="0"/>
|
|
<xs:element name="joining-method" type="joining-type"
|
|
minOccurs="0"/>
|
|
<xs:element name="joining-info"
|
|
type="execution-type"
|
|
minOccurs="0"/>
|
|
<xs:element name="disconnection-method"
|
|
type="disconnection-type"
|
|
minOccurs="0"/>
|
|
<xs:element name="disconnection-info"
|
|
type="execution-type"
|
|
minOccurs="0"/>
|
|
<xs:element name="media" type="media-type"
|
|
minOccurs="0" maxOccurs="unbounded"/>
|
|
<xs:element name="call-info" type="call-type"
|
|
minOccurs="0"/>
|
|
<xs:any namespace="##other" processContents="lax"
|
|
minOccurs="0" maxOccurs="unbounded"/>
|
|
</xs:sequence>
|
|
<xs:attribute name="entity" type="xs:string"/>
|
|
<xs:attribute name="state" type="state-type"
|
|
use="optional" default="full"/>
|
|
<xs:anyAttribute namespace="##other" processContents="lax"/>
|
|
</xs:complexType>
|
|
<!--
|
|
ENDPOINT STATUS TYPE
|
|
-->
|
|
<xs:simpleType name="endpoint-status-type">
|
|
<xs:restriction base="xs:string">
|
|
<xs:enumeration value="pending"/>
|
|
<xs:enumeration value="dialing-out"/>
|
|
<xs:enumeration value="dialing-in"/>
|
|
<xs:enumeration value="alerting"/>
|
|
<xs:enumeration value="on-hold"/>
|
|
<xs:enumeration value="connected"/>
|
|
<xs:enumeration value="muted-via-focus"/>
|
|
<xs:enumeration value="disconnecting"/>
|
|
<xs:enumeration value="disconnected"/>
|
|
</xs:restriction>
|
|
</xs:simpleType>
|
|
<!--
|
|
JOINING TYPE
|
|
-->
|
|
<xs:simpleType name="joining-type">
|
|
<xs:restriction base="xs:string">
|
|
<xs:enumeration value="dialed-in"/>
|
|
<xs:enumeration value="dialed-out"/>
|
|
<xs:enumeration value="focus-owner"/>
|
|
</xs:restriction>
|
|
</xs:simpleType>
|
|
<!--
|
|
DISCONNECTION TYPE
|
|
-->
|
|
<xs:simpleType name="disconnection-type">
|
|
<xs:restriction base="xs:string">
|
|
<xs:enumeration value="departed"/>
|
|
<xs:enumeration value="booted"/>
|
|
<xs:enumeration value="failed"/>
|
|
<xs:enumeration value="busy"/>
|
|
</xs:restriction>
|
|
</xs:simpleType>
|
|
<!--
|
|
EXECUTION TYPE
|
|
-->
|
|
<xs:complexType name="execution-type">
|
|
<xs:sequence>
|
|
<xs:element name="when" type="xs:dateTime"
|
|
minOccurs="0"/>
|
|
<xs:element name="reason" type="xs:string"
|
|
minOccurs="0"/>
|
|
<xs:element name="by" type="xs:anyURI"
|
|
minOccurs="0"/>
|
|
</xs:sequence>
|
|
<xs:anyAttribute namespace="##other" processContents="lax"/>
|
|
</xs:complexType>
|
|
<!--
|
|
CALL TYPE
|
|
-->
|
|
<xs:complexType name="call-type">
|
|
<xs:choice>
|
|
<xs:element name="sip" type="sip-dialog-id-type"/>
|
|
<xs:any namespace="##other" processContents="lax"
|
|
minOccurs="0" maxOccurs="unbounded"/>
|
|
</xs:choice>
|
|
<xs:anyAttribute namespace="##other" processContents="lax"/>
|
|
</xs:complexType>
|
|
<!--
|
|
SIP DIALOG ID TYPE
|
|
-->
|
|
<xs:complexType name="sip-dialog-id-type">
|
|
<xs:sequence>
|
|
<xs:element name="display-text" type="xs:string"
|
|
minOccurs="0"/>
|
|
<xs:element name="call-id" type="xs:string"/>
|
|
<xs:element name="from-tag" type="xs:string"/>
|
|
<xs:element name="to-tag" type="xs:string"/>
|
|
<xs:any namespace="##other" processContents="lax"
|
|
minOccurs="0" maxOccurs="unbounded"/>
|
|
</xs:sequence>
|
|
<xs:anyAttribute namespace="##other" processContents="lax"/>
|
|
</xs:complexType>
|
|
<!--
|
|
MEDIA TYPE
|
|
-->
|
|
<xs:complexType name="media-type">
|
|
<xs:sequence>
|
|
<xs:element name="display-text" type="xs:string"
|
|
minOccurs="0"/>
|
|
<xs:element name="type" type="xs:string"
|
|
minOccurs="0"/>
|
|
<xs:element name="label" type="xs:string"
|
|
minOccurs="0"/>
|
|
<xs:element name="src-id" type="xs:string"
|
|
minOccurs="0"/>
|
|
<xs:element name="status" type="media-status-type"
|
|
minOccurs="0"/>
|
|
<xs:any namespace="##other" processContents="lax"
|
|
minOccurs="0" maxOccurs="unbounded"/>
|
|
</xs:sequence>
|
|
<xs:attribute name="id" type="xs:string"
|
|
use="required"/>
|
|
<xs:anyAttribute namespace="##other" processContents="lax"/>
|
|
</xs:complexType>
|
|
<!--
|
|
MEDIA STATUS TYPE
|
|
-->
|
|
<xs:simpleType name="media-status-type">
|
|
<xs:restriction base="xs:string">
|
|
<xs:enumeration value="recvonly"/>
|
|
<xs:enumeration value="sendonly"/>
|
|
<xs:enumeration value="sendrecv"/>
|
|
<xs:enumeration value="inactive"/>
|
|
</xs:restriction>
|
|
</xs:simpleType>
|
|
<!--
|
|
SIDEBARS BY VAL TYPE
|
|
-->
|
|
<xs:complexType name="sidebars-by-val-type">
|
|
<xs:sequence>
|
|
<xs:element name="entry" type="conference-type"
|
|
minOccurs="0" maxOccurs="unbounded"/>
|
|
</xs:sequence>
|
|
<xs:attribute name="state" type="state-type"
|
|
use="optional" default="full"/>
|
|
<xs:anyAttribute namespace="##other" processContents="lax"/>
|
|
</xs:complexType>
|
|
</xs:schema>
|
|
|
|
</xs:schema>
|
|
]]></code>
|
|
</section2>
|
|
</section1>
|
|
<section1 topic='Acknowledgements' anchor='acks'>
|
|
<p>Jitsi's participation in this specification is funded by the NLnet
|
|
Foundation.</p>
|
|
</section1>
|
|
</xep>
|