XML 35
Clue_table.xml Guest on 25th August 2020 06:02:20 PM
  1. <rfc xmlns:xi="http://www.w3.org/2001/XInclude" submissionType="IETF" category="std" consensus="yes" number="0000" obsoletes="" updates="" xml:lang="en" sortRefs="true" symRefs="true" tocInclude="true" version="3" ipr="trust200902" docName="draft-ietf-clue-framework-25">
  2. <!--  xml2rfc v2v3 conversion 2.45.2  -->
  3. <front>
  4. <title abbrev="CLUE Framework">Framework for Telepresence Multi-Streams</title>
  5. <seriesInfo name="RFC" value="0000"/>
  6. <!-- [rfced] As the short title in the running header for this document was
  7. "CLUE Telepresence Framework", might the document title be better as:
  8.  
  9. Controlling Multiple Streams for Telepresence (CLUE) Framework
  10.  
  11. -->
  12. <author fullname="Mark Duckworth" initials="M." role="editor" surname="Duckworth">
  13. <organization>Polycom</organization>
  14. <address>
  15. <postal>
  16. <city>Andover</city>
  17. <region>MA</region>
  18. <code>01810</code>
  19. <country>United States of America</country>
  20. </postal>
  21. <email>[email protected]</email>
  22. </address>
  23. </author>
  24. <!--  [rfced] We have received a bounce menssage for
  25. [email protected]  Please let us know how Mark's contact information
  26. should be updated.
  27.  
  28. Original:
  29.   Mark Duckworth (editor)
  30.   Polycom
  31.   Andover, MA  01810
  32.   USA
  33.  
  34. -->
  35. <author fullname="Andrew Pepperell" initials="A." surname="Pepperell">
  36. <organization>Acano</organization>
  37. <address>
  38. <postal>
  39. <city>Uxbridge</city>
  40. <country>United Kingdom</country>
  41. </postal>
  42. <email>[email protected]</email>
  43. </address>
  44. </author>
  45. <author fullname="Stephan Wenger" initials="S." surname="Wenger">
  46. <organization abbrev="Vidyo">Vidyo, Inc.</organization>
  47. <address>
  48. <postal>
  49. <street>433 Hackensack Ave.</street>
  50. <city>Hackensack</city>
  51. <region>NJ</region>
  52. <code>07601</code>
  53. <country>United States of America</country>
  54. </postal>
  55. <email>[email protected]</email>
  56. </address>
  57. </author>
  58. <date month="June" year="2020"/>
  59. <area>ART</area>
  60. <workgroup>CLUE</workgroup>
  61. <!--  [rfced] Please insert any keywords (beyond those that appear in
  62. the title) for use on https://www.rfc-editor.org/search.
  63. -->
  64. <keyword>example</keyword>
  65. <abstract>
  66. <t> This document defines a framework for a protocol to enable devices in a telepresence conference to interoperate. The protocol enables communication of information about multiple media streams so a sending system and receiving system can make reasonable decisions about transmitting, selecting, and rendering the media streams. This protocol is used in addition to SIP signaling and Session Description Protocol (SDP) negotiation for setting up a telepresence session.</t>
  67. </abstract>
  68. </front>
  69. <middle>
  70. <section anchor="s-7.2.1.3" numbered="true" toc="default">
  71. <name>Synchronization Identity</name>
  72. <t> The Synchronization Identity MCC attribute indicates how the individual Captures in multiple MCC Captures are synchronized. To indicate that the Capture Encodings associated with MCCs contain Captures from the same source at the same time, a Provider should set the same Synchronization Identity on each of the concerned MCCs. It is the Provider that determines what the source for the Captures is, so a Provider can choose how to group together Single Media Captures into a combined "source" for the purpose of switching them together to keep them synchronized according to the SynchronizationID attribute. For example, when the Provider is in an MCU, it may determine that each separate CLUE Endpoint is a remote source of media. The Synchronization Identity may be used across media types, i.e., to synchronize audio- and video-related MCCs.</t>
  73. <t> Without this attribute it is assumed that multiple MCCs may provide content from different sources at any particular point in time.</t>
  74. <t>For example: </t>
  75. <figure anchor="table_4">
  76. <name>Example Synchronization Identity MCC Attribute Usage</name>
  77. <artwork name="" type="" align="left" alt="">
  78. <![CDATA[ +=======================+=================================+ | Capture Scene #1 | | +-----------------------|---------------------------------+ | VC1 | Description=Left | | VC2 | Description=Center | | VC3 | Description=Right | | AC1 | Description=Room | | CSV(VC1,VC2,VC3) | | | CSV(AC1) | | +=======================+=================================+ | Capture Scene #2 | | +-----------------------|---------------------------------+ | VC4 | Description=Left | | VC5 | Description=Center | | VC6 | Description=Right | | AC2 | Description=Room | | CSV(VC4,VC5,VC6) | | | CSV(AC2) | | +=======================+=================================+ | Capture Scene #3 | | +-----------------------|---------------------------------+ | VC7 | | | AC3 | | +=======================+=================================+ | Capture Scene #4 | | +-----------------------|---------------------------------+ | VC8 | | | AC4 | | +=======================+=================================+ | Capture Scene #5 | | +-----------------------|---------------------------------+ | MCC1(VC1,VC4,VC7) | SynchronizationID=1 | | | MaxCaptures=1 | | MCC2(VC2,VC5,VC8) | SynchronizationID=1 | | | MaxCaptures=1 | | MCC3(VC3,VC6) | MaxCaptures=1 | | MCC4(AC1,AC2,AC3,AC4) | SynchronizationID=1 | | | MaxCaptures=1 | | CSV(MCC1,MCC2,MCC3) | | | CSV(MCC4) | | +=======================+=================================+ ]]>
  79. </artwork>
  80. </figure>
  81. <table anchor="TEST_table_4">
  82. <name>TEST Example Synchronization Identity MCC Attribute Usage</name>
  83. <thead>
  84. <tr>
  85. <th>Capture Scene #1</th>
  86. <th/>
  87. </tr>
  88. </thead>
  89. <tbody>
  90. <tr>
  91. <td>VC1</td>
  92. <td>Description=Left</td>
  93. </tr>
  94. <tr>
  95. <td>VC2</td>
  96. <td>Description=Center</td>
  97. </tr>
  98. <tr>
  99. <td>VC3</td>
  100. <td>Description=Right</td>
  101. </tr>
  102. <tr>
  103. <td>AC1</td>
  104. <td>Description=Room</td>
  105. </tr>
  106. <tr>
  107. <td>CSV(VC1,VC2,VC3)</td>
  108. <td/>
  109. </tr>
  110. <tr>
  111. <td>CSV(AC1)</td>
  112. <td/>
  113. </tr>
  114. <!--         +=======================+=================================+  -->
  115. <tr>
  116. <th>Capture Scene #2</th>
  117. <th/>
  118. </tr>
  119. <tr>
  120. <td>VC4</td>
  121. <td>Description=Left</td>
  122. </tr>
  123. <tr>
  124. <td>VC5</td>
  125. <td>Description=Center</td>
  126. </tr>
  127. <tr>
  128. <td>VC6</td>
  129. <td>Description=Right</td>
  130. </tr>
  131. <tr>
  132. <td>AC2</td>
  133. <td>Description=Room</td>
  134. </tr>
  135. <tr>
  136. <td>CSV(VC4,VC5,VC6)</td>
  137. <td/>
  138. </tr>
  139. <tr>
  140. <td>CSV(AC2)</td>
  141. <td/>
  142. </tr>
  143. <!--         +=======================+=================================+  -->
  144. <tr>
  145. <th>Capture Scene #3</th>
  146. <th/>
  147. </tr>
  148. <tr>
  149. <td>VC7</td>
  150. <td/>
  151. </tr>
  152. <tr>
  153. <td>AC3</td>
  154. <td/>
  155. </tr>
  156. <!--         +=======================+=================================+  -->
  157. <tr>
  158. <th>Capture Scene #4</th>
  159. <th/>
  160. </tr>
  161. <tr>
  162. <td>VC8</td>
  163. <td/>
  164. </tr>
  165. <tr>
  166. <td>AC4</td>
  167. <td/>
  168. </tr>
  169. <!--         +=======================+=================================+  -->
  170. <tr>
  171. <th>Capture Scene #5</th>
  172. <th/>
  173. </tr>
  174. <tr>
  175. <td>MCC1(VC1,VC4,VC7)</td>
  176. <td>
  177. SynchronizationID=1
  178. <br/>
  179. MaxCaptures=1
  180. </td>
  181. </tr>
  182. <tr>
  183. <td>MCC2(VC2,VC5,VC8)</td>
  184. <td align="left">
  185. <ul empty="true" bare="true" spacing="compact">
  186. <li>SynchronizationID=1</li>
  187. <li>MaxCaptures=1</li>
  188. </ul>
  189. </td>
  190. </tr>
  191. <tr>
  192. <td>MCC3(VC3,VC6)</td>
  193. <td>MaxCaptures=1</td>
  194. </tr>
  195. <tr>
  196. <td>MCC4(AC1,AC2,AC3,AC4)</td>
  197. <td>
  198. SynchronizationID=1
  199. <br/>
  200. MaxCaptures=1
  201. </td>
  202. </tr>
  203. <tr>
  204. <td>CSV(MCC1,MCC2,MCC3)</td>
  205. <td/>
  206. </tr>
  207. <tr>
  208. <td>CSV(MCC4)</td>
  209. <td/>
  210. </tr>
  211. </tbody>
  212. </table>
  213. </section>
  214. </middle>
  215. <back> </back>
  216. </rfc>

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