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<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>
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<td class="notification-comment-pattern-container mobile-resize-text" style="padding: 0px; border-collapse: collapse; padding: 0px"><strong>Change comment:</strong> lots of words!</td>
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<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/Device+State?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>
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<th class="diff-macro-title" style="background-color: transparent; text-align: left; font-weight: normal;padding: 5px;"><span class="icon macro-placeholder-icon" style="background-color: ;line-height: 20px;"><img src="https://wiki.asterisk.org/wiki/s/en_GB-1988229788/4732/f543bd9a3bbc12daed85f6f5e5cba84282599932.48/_/images/icons/macrobrowser/dropdown/warning.png" style="padding-right: 5px; vertical-align: text-bottom;" /> </span>Warning</th>
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<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">Under Construction<span class="diff-html-removed" style="font-size: 100%; background-color: #ffe7e7; text-decoration: line-through;"> </span><span class="diff-html-removed" id="removed-diff-0" style="font-size: 100%; background-color: #ffe7e7; text-decoration: line-through;">- this page is a stub</span> </p> </td>
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</table> <p style="margin: 10px 0 0 0"> <span class="diff-html-removed" style="font-size: 100%; background-color: #ffe7e7; text-decoration: line-through;"> </span> </p> <h1 id="DeviceState-Overview" style="margin: 10px 0 0 0; font-size: 24px; font-weight: normal; line-height: 30px; margin: 40px 0 0 0"> <span class="diff-html-removed" style="font-size: 100%; background-color: #ffe7e7; text-decoration: line-through;">Overview</span> </h1> <p style="margin: 10px 0 0 0"> <span class="diff-html-removed" style="font-size: 100%; background-color: #ffe7e7; text-decoration: line-through;">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vivamus vel odio ullamcorper, laoreet odio non, tempus orci. Vivamus consectetur risus sit amet augue euismod interdum. Duis consequat rhoncus mi, eu sodales tellus imperdiet non. Duis tempor venenatis nunc in lacinia. Vivamus a blandit elit, id dapibus nibh. Aliquam suscipit nibh in metus sodales, ac ultrices odio sodales.</span> </p> <h1 id="DeviceState-FirstHeading" style="margin: 10px 0 0 0; font-size: 24px; font-weight: normal; line-height: 30px; margin: 40px 0 0 0"> <span class="diff-html-removed" style="font-size: 100%; background-color: #ffe7e7; text-decoration: line-through;">First Heading</span> </h1> <p style="margin: 10px 0 0 0"> <span class="diff-html-removed" style="font-size: 100%; background-color: #ffe7e7; text-decoration: line-through;">Nullam pulvinar, metus non auctor mollis, sem purus aliquet libero, sit amet ullamcorper tellus tellus id orci. Phasellus auctor at risus eget interdum. Suspendisse potenti. Duis dolor dolor, aliquam non aliquet eget, aliquam ut enim. Donec fringilla cursus dolor et facilisis. Vestibulum vulputate euismod rhoncus. Suspendisse ut lacinia orci, ac accumsan diam. Suspendisse eu dignissim tellus.</span> </p>
<ul style="margin: 10px 0 0 0">
<li> <span class="diff-html-removed" style="font-size: 100%; background-color: #ffe7e7; text-decoration: line-through;">item 1</span> </li>
<li> <span class="diff-html-removed" style="font-size: 100%; background-color: #ffe7e7; text-decoration: line-through;">item 2</span> </li>
<li> <span class="diff-html-removed" style="font-size: 100%; background-color: #ffe7e7; text-decoration: line-through;">item 3</span> </li>
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<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> </td>
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</table> <h1 id="DeviceState-Devices" style="margin: 10px 0 0 0; font-size: 24px; font-weight: normal; line-height: 30px; margin: 40px 0 0 0"> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">Devices</span> </h1> <p style="margin: 10px 0 0 0"> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">Devices are discrete components of functionality within Asterisk that serve a particular task. A device may be a channel technology resource, such as SIP/<name> in the case of chan_sip.so or the resource of some other feature providing module such as app_confbridge.so which provides devices like confbridge:<name>.</span> </p> <h2 id="DeviceState-Stateinformation" style="margin: 10px 0 0 0; font-size: 20px; font-weight: normal; line-height: 30px; margin: 40px 0 0 0"> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">State information</span> </h2> <p style="margin: 10px 0 0 0"> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">Asterisk devices make state information available to the Asterisk user, such that a user might make use of the information to affect call flow or behavior of the Asterisk system. The device state identifier for a particular device is typically identical to the device name. For example the device state identifier for SIP/6001 would be SIP/6001, for confbridge:7777 it would be confbridge:7777. Device states have a one-to-one mapping to the device they represent. That is opposed to other state providers in Asterisk which may have one-to-many relationships, such as Extension State.</span> </p> <p style="margin: 10px 0 0 0"> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">The </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;">Querying and Manipulating State</span></a><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;"> section covers how to access or manipulate device state as well as other states.</span> </p> <h1 id="DeviceState-CommonDeviceStateProviders" style="margin: 10px 0 0 0; font-size: 24px; font-weight: normal; line-height: 30px; margin: 40px 0 0 0"> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">Common Device State Providers</span> </h1> <p style="margin: 10px 0 0 0"> <em><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">Device state providers</span></em><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;"> are the components of Asterisk that provide some state information for their resources. The device state providers available in Asterisk will depend on the version of Asterisk you are using, what modules you have installed and how those modules are configured. Here is a list of the common </span><em><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">device state identifiers</span></em><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;"> you will see and what Asterisk component provides the resources and state.</span> </p> </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">On this Page</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">2</td>
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</table> <h1 id="DeviceState-SecondHeading" class="diff-block-target diff-block-context" style="margin: 10px 0 0 0; font-size: 24px; font-weight: normal; line-height: 30px; margin: 40px 0 0 0"> <span class="diff-html-removed" id="removed-diff-1" style="font-size: 100%; background-color: #ffe7e7; text-decoration: line-through;">Second Heading</span> </h1> <p class="diff-block-target diff-block-context" style="margin: 10px 0 0 0"> <span class="diff-html-removed" style="font-size: 100%; background-color: #ffe7e7; text-decoration: line-through;">Nulla sollicitudin velit vitae orci aliquam venenatis. Etiam in leo vel risus porta rutrum. Fusce viverra, dui porttitor viverra ultricies, neque elit cursus ipsum, non pulvinar lectus ipsum et quam. Curabitur eu erat lacinia, congue est et, malesuada lacus. Donec est justo, ullamcorper vel scelerisque vitae, hendrerit sed purus.</span> </p> <h2 id="DeviceState-firstsub-heading" class="diff-block-target diff-block-context" style="margin: 10px 0 0 0; font-size: 20px; font-weight: normal; line-height: 30px; margin: 40px 0 0 0"> <span class="diff-html-removed" style="font-size: 100%; background-color: #ffe7e7; text-decoration: line-through;">first sub-heading</span> </h2> <p class="diff-block-target diff-block-context" style="margin: 10px 0 0 0"> <span class="diff-html-removed" style="font-size: 100%; background-color: #ffe7e7; text-decoration: line-through;">Duis molestie convallis lectus a porta. Vivamus semper, nunc ac interdum faucibus, nibh nunc ultrices felis, consequat condimentum massa risus nec justo. Fusce auctor orci a metus pellentesque, non posuere purus vehicula. In cursus ac tellus in iaculis.</span> </p> <h2 id="DeviceState-secondsub-heading" class="diff-block-target diff-block-context" style="margin: 10px 0 0 0; font-size: 20px; font-weight: normal; line-height: 30px; margin: 40px 0 0 0"> <span class="diff-html-removed" style="font-size: 100%; background-color: #ffe7e7; text-decoration: line-through;">second sub-heading</span> </h2> <p class="diff-context-placeholder" style="margin: 10px 0 0 0">...</p>
<div class="table-wrap diff-block-target diff-block-context" style="margin: 10px 0 0 0; overflow-x: auto">
<table class="confluenceTable" style="border-collapse: collapse; border: 1px solid #ddd;; border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; color: #333; border-collapse: collapse; margin: 10px 0 0 0; overflow-x: auto; margin-top: 0">
<tbody>
<tr>
<th class="confluenceTh" style="border: 1px solid #DDD; padding: 5px 7px; min-width: 0.6em; text-align: left; vertical-align: top;background-color: #F0F0F0; font-weight: bold;; border: 1px solid #ddd; padding: 7px 10px; vertical-align: top; text-align: left; background-color: #f0f0f0; font-weight: bold"><span class="diff-html-added" id="added-diff-1" style="font-size: 100%; background-color: #ddfade;">Device State Identifier</span></th>
<th class="confluenceTh" style="border: 1px solid #DDD; padding: 5px 7px; min-width: 0.6em; text-align: left; vertical-align: top;background-color: #F0F0F0; font-weight: bold;; border: 1px solid #ddd; padding: 7px 10px; vertical-align: top; text-align: left; background-color: #f0f0f0; font-weight: bold"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">Device State Provider</span></th>
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<td class="confluenceTd" style="border: 1px solid #DDD; padding: 5px 7px; min-width: 0.6em; text-align: left; vertical-align: top;; padding: 0px; border-collapse: collapse; border: 1px solid #ddd; padding: 7px 10px; vertical-align: top; text-align: left"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">PJSIP/<resource></span></td>
<td class="confluenceTd" style="border: 1px solid #DDD; padding: 5px 7px; min-width: 0.6em; text-align: left; vertical-align: top;; padding: 0px; border-collapse: collapse; border: 1px solid #ddd; padding: 7px 10px; vertical-align: top; text-align: left"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">PJSIP SIP stack, res_pjsip.so, chan_pjsip.so.</span></td>
</tr>
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<td colspan="1" class="confluenceTd" style="border: 1px solid #DDD; padding: 5px 7px; min-width: 0.6em; text-align: left; vertical-align: top;; padding: 0px; border-collapse: collapse; border: 1px solid #ddd; padding: 7px 10px; vertical-align: top; text-align: left"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">SIP/<resource></span></td>
<td colspan="1" class="confluenceTd" style="border: 1px solid #DDD; padding: 5px 7px; min-width: 0.6em; text-align: left; vertical-align: top;; padding: 0px; border-collapse: collapse; border: 1px solid #ddd; padding: 7px 10px; vertical-align: top; text-align: left"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">The older SIP channel driver, chan_sip.so.</span></td>
</tr>
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<td colspan="1" class="confluenceTd" style="border: 1px solid #DDD; padding: 5px 7px; min-width: 0.6em; text-align: left; vertical-align: top;; padding: 0px; border-collapse: collapse; border: 1px solid #ddd; padding: 7px 10px; vertical-align: top; text-align: left"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">DAHDI/<resource></span></td>
<td colspan="1" class="confluenceTd" style="border: 1px solid #DDD; padding: 5px 7px; min-width: 0.6em; text-align: left; vertical-align: top;; padding: 0px; border-collapse: collapse; border: 1px solid #ddd; padding: 7px 10px; vertical-align: top; text-align: left"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">The popular telephony hardware interface driver, chan_dahdi.so.</span></td>
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<td colspan="1" class="confluenceTd" style="border: 1px solid #DDD; padding: 5px 7px; min-width: 0.6em; text-align: left; vertical-align: top;; padding: 0px; border-collapse: collapse; border: 1px solid #ddd; padding: 7px 10px; vertical-align: top; text-align: left"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">IAX2/<resource></span></td>
<td colspan="1" class="confluenceTd" style="border: 1px solid #DDD; padding: 5px 7px; min-width: 0.6em; text-align: left; vertical-align: top;; padding: 0px; border-collapse: collapse; border: 1px solid #ddd; padding: 7px 10px; vertical-align: top; text-align: left"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">Inter-Asterisk Exchange protocol! chan_iax2.so.</span></td>
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<td colspan="1" class="confluenceTd" style="border: 1px solid #DDD; padding: 5px 7px; min-width: 0.6em; text-align: left; vertical-align: top;; padding: 0px; border-collapse: collapse; border: 1px solid #ddd; padding: 7px 10px; vertical-align: top; text-align: left"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">ConfBridge:<resource></span></td>
<td colspan="1" class="confluenceTd" style="border: 1px solid #DDD; padding: 5px 7px; min-width: 0.6em; text-align: left; vertical-align: top;; padding: 0px; border-collapse: collapse; border: 1px solid #ddd; padding: 7px 10px; vertical-align: top; text-align: left"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">The conference bridge application, app_confbridge.so.</span></td>
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<td colspan="1" class="confluenceTd" style="border: 1px solid #DDD; padding: 5px 7px; min-width: 0.6em; text-align: left; vertical-align: top;; padding: 0px; border-collapse: collapse; border: 1px solid #ddd; padding: 7px 10px; vertical-align: top; text-align: left"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">MeetMe:<resource></span></td>
<td colspan="1" class="confluenceTd" style="border: 1px solid #DDD; padding: 5px 7px; min-width: 0.6em; text-align: left; vertical-align: top;; padding: 0px; border-collapse: collapse; border: 1px solid #ddd; padding: 7px 10px; vertical-align: top; text-align: left"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">The older conference bridging app, app_meetme.so.</span></td>
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<td colspan="1" class="confluenceTd" style="border: 1px solid #DDD; padding: 5px 7px; min-width: 0.6em; text-align: left; vertical-align: top;; padding: 0px; border-collapse: collapse; border: 1px solid #ddd; padding: 7px 10px; vertical-align: top; text-align: left"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">Park:<resource></span></td>
<td colspan="1" class="confluenceTd" style="border: 1px solid #DDD; padding: 5px 7px; min-width: 0.6em; text-align: left; vertical-align: top;; padding: 0px; border-collapse: collapse; border: 1px solid #ddd; padding: 7px 10px; vertical-align: top; text-align: left"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">The Asterisk core in versions up to 11.</span> <br /> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">res_parking.so in versions 12 or greater.</span></td>
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<td colspan="1" class="confluenceTd" style="border: 1px solid #DDD; padding: 5px 7px; min-width: 0.6em; text-align: left; vertical-align: top;; padding: 0px; border-collapse: collapse; border: 1px solid #ddd; padding: 7px 10px; vertical-align: top; text-align: left"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">Calendar:<resource></span></td>
<td colspan="1" class="confluenceTd" style="border: 1px solid #DDD; padding: 5px 7px; min-width: 0.6em; text-align: left; vertical-align: top;; padding: 0px; border-collapse: collapse; border: 1px solid #ddd; padding: 7px 10px; vertical-align: top; text-align: left"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">res_calendar.so and related calendaring modules.</span></td>
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<td colspan="1" class="confluenceTd" style="border: 1px solid #DDD; padding: 5px 7px; min-width: 0.6em; text-align: left; vertical-align: top;; padding: 0px; border-collapse: collapse; border: 1px solid #ddd; padding: 7px 10px; vertical-align: top; text-align: left"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">Custom:<resource></span></td>
<td colspan="1" class="confluenceTd" style="border: 1px solid #DDD; padding: 5px 7px; min-width: 0.6em; text-align: left; vertical-align: top;; padding: 0px; border-collapse: collapse; border: 1px solid #ddd; padding: 7px 10px; vertical-align: top; text-align: left"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">Custom device state provided by the asterisk core.</span></td>
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</div> <p class="diff-block-target diff-block-context" style="margin: 10px 0 0 0"> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">Note that we are not differentiating any device state providers based on what is on the far end. Depending on device state provider, the far end of signaling for state could be a physical device, or just a discrete feature resource inside of Asterisk. In terms of understanding device state for use in Asterisk, it doesn't really matter. The device state represents the state of the Asterisk device as long as it is able to provide it regardless of what is on the far end of the communication path.</span> </p> <h2 id="DeviceState-CustomDeviceStates" class="diff-block-target diff-block-context" style="margin: 10px 0 0 0; font-size: 20px; font-weight: normal; line-height: 30px; margin: 40px 0 0 0"> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">Custom Device States</span> </h2> <p class="diff-block-target diff-block-context" style="margin: 10px 0 0 0"> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">The Asterisk core provides a </span><em><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">Custom</span></em><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;"> device state provider (custom:<resource>) that allows you to define arbitrary device state resources. See the </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;">Querying and Manipulating State</span></a><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;"> section for more on using custom device state.</span> </p> <h1 id="DeviceState-PossibleDeviceStates" class="diff-block-target diff-block-context" style="margin: 10px 0 0 0; font-size: 24px; font-weight: normal; line-height: 30px; margin: 40px 0 0 0"> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">Possible Device States</span> </h1> <p class="diff-block-target diff-block-context" style="margin: 10px 0 0 0"> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">Here are the possible states that a device state may have.</span> </p>
<ul class="diff-block-target diff-block-context" style="margin: 10px 0 0 0">
<li> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">UNKNOWN</span> </li>
<li> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">NOT_INUSE</span> </li>
<li> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">INUSE</span> </li>
<li> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">BUSY</span> </li>
<li> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">INVALID</span> </li>
<li> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">UNAVAILABLE</span> </li>
<li> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">RINGING</span> </li>
<li> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">RINGINUSE</span> </li>
<li> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">ONHOLD</span> </li>
</ul> <p class="diff-block-target diff-block-context" style="margin: 10px 0 0 0"> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">Though the label for each state carries a certain connotation, the actual meaning of each state is really up to the device state provider. That is, any particular state may mean something different across device state providers</span>.</p> </td>
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