<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> 
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0" /> 
<base href="https://wiki.asterisk.org/wiki" /> 
<title>Message Title</title>  
<style type="text/css">@media only screen and (max-device-width: 480px) {.mobile-only {
        width: auto !important;
        height: auto !important;
        overflow: visible !important;
        line-height: normal !important;
        font-size: inherit !important;
        mso-hide: all;
}

.desktop-only {
        display: none !important;
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/* iPhone 3GS fix for unwanted 20px right margin */
body { min-width: 100% !important; padding: 0; margin: 0; }

#center-content-table { max-width: none; !important; }
#header-pattern-container { padding: 10px 10px 10px 10px !important; line-height: 20px !important; }
#header-avatar-image-container { padding-right: 8px !important; }
#email-content-container { padding: 0 !important; }
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#page-title-pattern-header { font-size: 20px !important; line-height: 28px !important; }
#page-title-pattern-icon-image-container-cell { padding-top: 7px !important; }
#inline-user-pattern { display: block !important; }
#inline-user-pattern-avatar { padding-top: 3px !important; }
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.users-involved-pattern-column-container { padding-right: 0 !important; }
.contextual-excerpt-pattern, #users-involved-pattern { border: 0 !important; }

/** Aui Typography upsized for mobile **/
#content-excerpt-pattern-container, #contextual-excerpt-pattern-text-container { font-size: 16px !important; line-height: 22px !important; }
#content-excerpt-pattern-container h1, #contextual-excerpt-pattern-text-container h1 { font-size: 24px !important; line-height: 28px !important; }
#content-excerpt-pattern-container h2, #contextual-excerpt-pattern-text-container h2 { font-size: 20px !important; line-height: 28px !important; }
#content-excerpt-pattern-container h3, #contextual-excerpt-pattern-text-container h3 { font-size: 18px !important; line-height: 24px !important; }
#content-excerpt-pattern-container h4, #contextual-excerpt-pattern-text-container h4 { font-size: 16px !important; line-height: 22px !important; }
#content-excerpt-pattern-container h5, #contextual-excerpt-pattern-text-container h5 { font-size: 14px !important; line-height: 20px !important; }
#content-excerpt-pattern-container h6, #contextual-excerpt-pattern-text-container h6 { font-size: 14px !important; line-height: 20px !important; }
.user-mention { line-height: 18px !important; }
/** Aui Typography end **/

/* Show appropriate footer logo on mobile, display links vertically */
#footer-pattern { padding: 15px 10px !important; }
#footer-pattern-logo-desktop-container { padding: 0 !important; }
#footer-pattern-logo-desktop { width: 0 !important; height: 0 !important; }
#footer-pattern-logo-mobile {
    padding-top: 10px !important;
    width: 30px !important;
    height: 27px !important;
    display: inline !important;
}
#footer-pattern-text {
    display: block !important;
}
#footer-pattern-links-container { line-height: 0 !important;}
.footer-pattern-links.mobile-resize-text,
.footer-pattern-links.mobile-resize-text,
#footer-pattern-text.mobile-resize-text,
#footer-pattern-links-container.no-footer-links {
    font-size: 14px !important;
    line-height: 20px !important;
}
.footer-link { display: block !important; }
#footer-pattern-links-container table { display: inline-block !important; float: none !important; }
#footer-pattern-links-container, #footer-pattern-text { text-align: center !important; }
#footer-pattern-links { padding-bottom: 5px !important; }

/** Team Calendar overrides, these should be removed when notifications are updated in Team Calendars. For now CSS
    overrides are being used because the structure of the content can't change without rereleasing the plugin */
.mail-calendar-container .day-header + table tr td:first-child {
    vertical-align: top !important;
    padding-top: 5px !important;
}}
@media (min-width: 900px) {#center-content-table { width: 900px; }}
@media all {#outlook a {padding:0;} /* Force Outlook to provide a "view in browser" menu link. */
/* Prevent Webkit and Windows Mobile platforms from changing default font sizes.*/
body{-webkit-text-size-adjust:100%; -ms-text-size-adjust:100%;}
.ExternalClass {width:100%;} /* Force Hotmail to display emails at full width */
#background-table {margin:0; padding:0; width:100% !important; }
/* Needed to override highlighting on date and time links in iOS */
.grey a {color: #707070; text-decoration: none; }/* These styles are appended to the head element of a notification in order to prevent Apple Mail and similar
   clients from underlining the due dates with a blue hyperlink */
/* a lozenge outside an inline task should always be #333, lozenges inside an inline task should be
   colored according to their upcoming due dates, a completed task date lozenge or deleted task date
   lozenge should always be #707070 */
.date-time-lozenge a {color: #333333; text-decoration: none; }
.inline-task-text-container .date-time-lozenge.date-upcoming a {color: #DF6F00; text-decoration: none; }
.inline-task-text-container .date-time-lozenge.date-past a {color: #D04437; text-decoration: none; }
.inline-task-text-container.content-deleted-color .date-time-lozenge a,
.inline-task-text-container.checked .date-time-lozenge a {
    color: #707070; text-decoration: none;
}}
</style> 
</head>
<body>
<table id="background-table" cellpadding="0" cellspacing="0" width="100%" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; color: #333; background-color: #f5f5f5"> 
<tbody> 
<tr> 
<td id="header-pattern-container" style="padding: 0px; border-collapse: collapse; padding: 10px 20px"> 
<table id="header-pattern" cellspacing="0" cellpadding="0" border="0" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; color: #333"> 
<tbody> 
<tr> 
<td id="header-avatar-image-container" valign="top" style="padding: 0px; border-collapse: collapse; vertical-align: top; width: 32px; padding-right: 9px"><a href="https://wiki.asterisk.org/wiki/display/~rnewton?src=email" style="color: #3b73af; text-decoration: none"><img id="header-avatar-image" class="image_fix" src="cid:avatar_925838d3d8b1f71935f30b314c925d64" height="32" width="32" border="0" style="border-radius: 3px; vertical-align: top" /></a></td>
<td id="header-text-container" valign="middle" style="padding: 0px; border-collapse: collapse; vertical-align: middle; font-family: Arial, sans-serif; font-size: 14px; line-height: 20px; mso-line-height-rule: exactly; mso-text-raise: 1px">Rusty Newton <strong>edited</strong> a page</td> 
</tr> 
</tbody> 
</table> </td> 
</tr> 
<!-- End Header pattern --> 
<tr> 
<td id="email-content-container" style="padding: 0px; border-collapse: collapse; padding: 0 20px"> 
<table id="email-content-table" cellspacing="0" cellpadding="0" border="0" width="100%" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; color: #333; border-spacing: 0; border-collapse: separate"> 
<tbody> 
<tr> 
<td class="email-content-rounded-top mobile-expand" style="padding: 0px; border-collapse: collapse; color: #fff; padding: 0 15px 0 16px; height: 15px; background-color: #fff; border-left: 1px solid #ccc; border-top: 1px solid #ccc; border-right: 1px solid #ccc; border-bottom: 0; border-top-right-radius: 5px; border-top-left-radius: 5px"> </td> 
</tr> 
<tr> 
<td class="email-content-main mobile-expand" style="padding: 0px; border-collapse: collapse; border-left: 1px solid #ccc; border-right: 1px solid #ccc; border-top: 0; border-bottom: 0; padding: 0 15px 15px 16px; background-color: #fff"> 
<table class="notification-comment-pattern" cellspacing="0" cellpadding="0" border="0" width="100%" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; color: #333; font-family: Arial, sans-serif; font-size: 14px; line-height: 20px; mso-line-height-rule: exactly; mso-text-raise: 2px"> 
<tbody> 
<tr> 
<td class="notification-comment-pattern-container mobile-resize-text" style="padding: 0px; border-collapse: collapse; padding: 0px"><strong>Change comment:</strong> formatting, children display and see also for distributed device state which I moved</td> 
</tr> 
</tbody> 
</table> </td> 
</tr> 
<tr> 
<td class="email-content-main mobile-expand padding-top border-top" style="padding: 0px; border-collapse: collapse; border-left: 1px solid #ccc; border-right: 1px solid #ccc; border-top: 0; border-bottom: 0; padding: 0 15px 15px 16px; background-color: #fff; border-top: 1px solid #ccc; padding-top: 15px"> 
<table id="page-title-pattern" cellspacing="0" cellpadding="0" border="0" width="100%" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; color: #333"> 
<tbody> 
<tr> 
<td id="page-title-pattern-icon-image-container" valign="top" style="padding: 0px; border-collapse: collapse; width: 16px; vertical-align: top"> 
<table cellspacing="0" cellpadding="0" border="0" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; color: #333"> 
<tbody> 
<tr> 
<td id="page-title-pattern-icon-image-container-cell" style="padding: 0px; border-collapse: collapse; width: 16px; padding: 9px 8px 0px 0px; mso-text-raise: 5px; mso-line-height-rule: exactly"><a href="https://wiki.asterisk.org/wiki/display/AST/States+and+Presence?src=email" title="page icon" style="vertical-align: top;; color: #3b73af; text-decoration: none"><img style="vertical-align: top; display: block;" src="cid:page-icon" alt="page icon" title="page icon" height="16" width="16" border="0" /></a></td> 
</tr> 
</tbody> 
</table> </td>
<td style="vertical-align: top;; padding: 0px; border-collapse: collapse; padding-right: 5px; font-size: 20px; line-height: 30px; mso-line-height-rule: exactly" id="page-title-pattern-header-container"><span id="page-title-pattern-header" style="font-family: Arial, sans-serif; padding: 0; font-size: 20px; line-height: 30px; mso-text-raise: 2px; mso-line-height-rule: exactly; vertical-align: middle"><a href="https://wiki.asterisk.org/wiki/display/AST/States+and+Presence?src=email" title="States and Presence" style="color: #3b73af; text-decoration: none">States and Presence</a></span></td> 
</tr> 
</tbody> 
</table> </td> 
</tr> 
<tr> 
<td class="email-content-main mobile-expand" style="padding: 0px; border-collapse: collapse; border-left: 1px solid #ccc; border-right: 1px solid #ccc; border-top: 0; border-bottom: 0; padding: 0 15px 15px 16px; background-color: #fff"> 
<table class="content-excerpt-pattern" cellspacing="0" cellpadding="0" border="0" width="100%" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; color: #333; font-family: Arial, sans-serif; font-size: 14px; line-height: 20px; mso-line-height-rule: exactly; mso-text-raise: 1px"> 
<tbody> 
<tr> 
<td class="content-excerpt-pattern-container mobile-resize-text " style="padding: 0px; border-collapse: collapse; padding: 0 0 0 24px"> 
<div class="contentLayout2 diff-block-target diff-block-context"> 
<table width="100%" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; color: #333"> 
<tbody>
<tr class="columnLayout two-equal" data-layout="two-equal"> 
<td valign="top" class="cell normal" data-type="normal" style="padding: 0px; border-collapse: collapse"> 
<div class="innerCell"> 
<p style="margin: 10px 0 0 0; margin-top: 0"> <span class="diff-html-changed" id="changed-diff-0" style="background-color: #d6f0ff;">Asterisk includes the concepts of </span><a class="confluence-link unresolved" href="#" style="color: #3b73af; text-decoration: none"><span class="diff-html-changed" style="background-color: #d6f0ff;">Device State</span></a><span class="diff-html-changed" style="background-color: #d6f0ff;"> , </span><a class="confluence-link unresolved" href="#" style="color: #3b73af; text-decoration: none"><span class="diff-html-changed" style="background-color: #d6f0ff;">Extension State</span></a><span class="diff-html-changed" style="background-color: #d6f0ff;"> and </span><a class="confluence-link unresolved" href="#" style="color: #3b73af; text-decoration: none"><span class="diff-html-changed" style="background-color: #d6f0ff;">Presence State</span></a><span class="diff-html-changed" style="background-color: #d6f0ff;"> which together allow Asterisk applications and interfaces to receive information about the state of devices, extensions and the users of the devices.</span> </p> 
<p style="margin: 10px 0 0 0"> <span class="diff-html-changed" style="background-color: #d6f0ff;">As an example, channel drivers like chan_sip or res_pjsip/chan_pjsip may both provide devices with device state, plus allow devices to </span><a class="confluence-link unresolved" href="#" style="color: #3b73af; text-decoration: none"><span class="diff-html-changed" style="background-color: #d6f0ff;">subscribe to hints</span></a><span class="diff-html-changed" style="background-color: #d6f0ff;"> to receive notifications of state change. Other examples would be app_queue which takes into consideration the device state of queue members to influence queue logic or the Asterisk Manager Interface which provides actions for </span><a class="confluence-link unresolved" href="#" style="color: #3b73af; text-decoration: none"><span class="diff-html-changed" style="background-color: #d6f0ff;">querying extension state and presence state</span></a><span class="diff-html-changed" style="background-color: #d6f0ff;">.</span> </p> 
</div> </td> 
<td valign="top" class="cell normal" data-type="normal" style="padding: 0px; border-collapse: collapse"> 
<div class="innerCell"> 
<table class="diff-macro diff-html-added" style="background-color: #f0f0f0;border: 1px solid #dddddd;margin: 10px 1px;padding: 0 2px 2px;width: 100%;background-color: #ddfade;border-color: #93c49f;; border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; color: #333"> 
<thead> 
<tr> 
<th class="diff-macro-title" style="background-color: transparent; text-align: left; font-weight: normal;padding: 5px;"><span class="diff-html-added" id="added-diff-0" style="font-size: 100%; background-color: #ddfade;"><span class="icon macro-placeholder-icon" style="background-color: ;line-height: 20px;"><img src="https://wiki.asterisk.org/wiki/s/en_GB/5639/a252d7f5e75d7a8bf7047b4b2c92f71a56a8f048.48/_/images/icons/macrobrowser/dropdown/panel.png" style="padding-right: 5px; vertical-align: text-bottom;" /> </span>Panel</span></th> 
</tr> 
</thead> 
<tbody> 
<tr> 
<td class="diff-macro-properties" style="background-color: #fafafa; padding: 0 0 0 5px; font-size: 12px; text-align: left;padding: 0; border: 1px solid #dddddd;; padding: 0px; border-collapse: collapse"> 
<table style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; color: #333"> 
<tbody> 
<tr> 
<td style="background-color: #fafafa; padding: 0 0 0 5px; font-size: 12px; text-align: left;; padding: 0px; border-collapse: collapse"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">title</span></td> 
<td style="background-color: #fafafa; padding: 0 0 0 5px; font-size: 12px; text-align: left;; padding: 0px; border-collapse: collapse"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">In This Section</span></td> 
</tr> 
</tbody> 
</table> </td> 
</tr> 
</tbody> 
<tbody> 
<tr> 
<td class="diff-macro-body" style="background-color: #fff;border: 1px solid #dddddd;padding: 10px;; padding: 0px; border-collapse: collapse"> <p style="margin: 10px 0 0 0; margin-top: 0"></p> 
<table class="diff-macro bodyless diff-html-added" style="background-color: #f0f0f0;border: 1px solid #dddddd;margin: 10px 1px;padding: 0 2px 2px;width: 100%;margin: 5px 0; padding: 0; width: auto;background-color: #ddfade;border-color: #93c49f;; border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; color: #333"> 
<thead> 
<tr> 
<th class="diff-macro-title" style="background-color: transparent; text-align: left; font-weight: normal;padding: 5px;"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;"><span class="icon macro-placeholder-icon" style="background-color: ;line-height: 20px;"><img src="https://wiki.asterisk.org/wiki/s/en_GB/5639/a252d7f5e75d7a8bf7047b4b2c92f71a56a8f048.48/_/images/icons/macrobrowser/dropdown/children.png" style="padding-right: 5px; vertical-align: text-bottom;" /> </span>Children Display</span></th> 
</tr> 
</thead> 
</table> <p style="margin: 10px 0 0 0"></p> </td> 
</tr> 
</tbody> 
</table> 
<table class="diff-macro diff-html-added" style="background-color: #f0f0f0;border: 1px solid #dddddd;margin: 10px 1px;padding: 0 2px 2px;width: 100%;background-color: #ddfade;border-color: #93c49f;; border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; color: #333"> 
<thead> 
<tr> 
<th class="diff-macro-title" style="background-color: transparent; text-align: left; font-weight: normal;padding: 5px;"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;"><span class="icon macro-placeholder-icon" style="background-color: ;line-height: 20px;"><img src="https://wiki.asterisk.org/wiki/s/en_GB/5639/a252d7f5e75d7a8bf7047b4b2c92f71a56a8f048.48/_/images/icons/macrobrowser/dropdown/panel.png" style="padding-right: 5px; vertical-align: text-bottom;" /> </span>Panel</span></th> 
</tr> 
</thead> 
<tbody> 
<tr> 
<td class="diff-macro-properties" style="background-color: #fafafa; padding: 0 0 0 5px; font-size: 12px; text-align: left;padding: 0; border: 1px solid #dddddd;; padding: 0px; border-collapse: collapse"> 
<table style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; color: #333"> 
<tbody> 
<tr> 
<td style="background-color: #fafafa; padding: 0 0 0 5px; font-size: 12px; text-align: left;; padding: 0px; border-collapse: collapse"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">title</span></td> 
<td style="background-color: #fafafa; padding: 0 0 0 5px; font-size: 12px; text-align: left;; padding: 0px; border-collapse: collapse"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">See Also</span></td> 
</tr> 
</tbody> 
</table> </td> 
</tr> 
</tbody> 
<tbody> 
<tr> 
<td class="diff-macro-body" style="background-color: #fff;border: 1px solid #dddddd;padding: 10px;; padding: 0px; border-collapse: collapse"> <p style="margin: 10px 0 0 0; margin-top: 0"> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;"> </span><a class="confluence-link unresolved" href="#" style="color: #3b73af; text-decoration: none"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">Distributed Device State</span></a> </p> </td> 
</tr> 
</tbody> 
</table> 
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<p style="margin: 10px 0 0 0; margin-top: 0"> <span class="diff-html-changed" id="changed-diff-1" style="background-color: #d6f0ff;">Additionally, modules exist for </span><a class="confluence-link unresolved" href="#" style="color: #3b73af; text-decoration: none"><span class="diff-html-changed" style="background-color: #d6f0ff;">Corosync</span></a> </p> 
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</div> <p class="diff-context-placeholder" style="margin: 10px 0 0 0">...</p> 
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<p style="margin: 10px 0 0 0; margin-top: 0"> <span class="diff-html-added" id="added-diff-1" style="font-size: 100%; background-color: #ddfade;"> and </span><a class="confluence-link unresolved" href="#" style="color: #3b73af; text-decoration: none"><span class="diff-html-changed" id="changed-diff-2" style="background-color: #d6f0ff;">XMPP PubSub</span></a> </p> 
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</div> <p class="diff-context-placeholder" style="margin: 10px 0 0 0">...</p> 
<div class="contentLayout2 diff-block-target diff-block-context"> 
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<p style="margin: 10px 0 0 0; margin-top: 0"> <span class="diff-html-added" id="added-diff-2" style="font-size: 100%; background-color: #ddfade;"> support </span><span class="diff-html-changed" id="changed-diff-3" style="background-color: #d6f0ff;">to allow device state to be </span><a class="confluence-link unresolved" href="#" style="color: #3b73af; text-decoration: none"><span class="diff-html-changed" id="changed-diff-4" style="background-color: #d6f0ff;">shared and distributed</span></a><span class="diff-html-changed" style="background-color: #d6f0ff;"> </span><span class="diff-html-changed" id="changed-diff-5" style="background-color: #d6f0ff;">across multiple systems.</span> </p> 
<p style="margin: 10px 0 0 0"> <span class="diff-html-changed" style="background-color: #d6f0ff;">The sub-sections here describe these concepts, point to related module specific configuration sections and </span> </p> 
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</div> <p class="diff-context-placeholder" style="margin: 10px 0 0 0">...</p> 
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<tbody>
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<p style="margin: 10px 0 0 0; margin-top: 0"> <span class="diff-html-added" id="added-diff-3" style="font-size: 100%; background-color: #ddfade;">discuss </span><a class="confluence-link unresolved" href="#" style="color: #3b73af; text-decoration: none"><span class="diff-html-changed" id="changed-diff-6" style="background-color: #d6f0ff;">Querying and Manipulating State</span></a> </p> 
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</div> <p class="diff-context-placeholder" style="margin: 10px 0 0 0">...</p> 
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<p style="margin: 10px 0 0 0; margin-top: 0"> <span class="diff-html-added" id="added-diff-4" style="font-size: 100%; background-color: #ddfade;"> information</span><span class="diff-html-changed" id="changed-diff-7" style="background-color: #d6f0ff;">.</span> </p> 
<p style="margin: 10px 0 0 0"> <span class="diff-html-changed" style="background-color: #d6f0ff;">The figure below may help you get an idea of the overall use of states and presence with the Asterisk system. It has been simplified to focus on the flow and usage of state and presence. In reality, the architecture can be a bit more confusing. For example a module could both provide subscription functionality for a subscriber and be the same module providing the devices and device state on the other end.</span> </p> 
<p style="margin: 10px 0 0 0"></p> 
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<th class="diff-macro-title" style="background-color: transparent; text-align: left; font-weight: normal;padding: 5px;"><span class="diff-html-changed" style="background-color: #d6f0ff;"><span class="icon macro-placeholder-icon" style="background-color: ;line-height: 20px;"><img src="https://wiki.asterisk.org/wiki/s/en_GB/5639/a252d7f5e75d7a8bf7047b4b2c92f71a56a8f048.48/_/plugins/servlet/confluence/placeholder/macro-icon?name=gliffy" style="padding-right: 5px; vertical-align: text-bottom;" /> </span>Gliffy Diagram</span></th> 
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<td style="background-color: #fafafa; padding: 0 0 0 5px; font-size: 12px; text-align: left;; padding: 0px; border-collapse: collapse"></td> 
<td style="background-color: #fafafa; padding: 0 0 0 5px; font-size: 12px; text-align: left;; padding: 0px; border-collapse: collapse"></td> 
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<td style="background-color: #fafafa; padding: 0 0 0 5px; font-size: 12px; text-align: left;; padding: 0px; border-collapse: collapse"><span class="diff-html-changed" style="background-color: #d6f0ff;">name</span></td> 
<td style="background-color: #fafafa; padding: 0 0 0 5px; font-size: 12px; text-align: left;; padding: 0px; border-collapse: collapse"><span class="diff-html-changed" style="background-color: #d6f0ff;">StateAndPresenceOverview</span></td> 
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