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                            Asterisk Project : Asterisk 13 Function_JITTERBUFFER
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            Created and last modified by <span class='author'> wikibot</span> on Aug 11, 2014
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                    <h1 id="Asterisk13Function_JITTERBUFFER-JITTERBUFFER()">JITTERBUFFER()</h1>

<h3 id="Asterisk13Function_JITTERBUFFER-Synopsis">Synopsis</h3>

<p>Add a Jitterbuffer to the Read side of the channel. This dejitters the audio stream before it reaches the Asterisk core. This is a write only function.</p>

<h3 id="Asterisk13Function_JITTERBUFFER-Description">Description</h3>

<p>Jitterbuffers are constructed in two different ways. The first always take three arguments: <em>max_size</em>, <em>resync_threshold</em>, and <em>target_extra</em>. Alternatively, a single argument of <code>default</code> can be provided, which will construct the default jitterbuffer for the given <em>jitterbuffer type</em>.</p>

<p>The arguments are:</p>

<p>max_size: Length in milliseconds of the buffer. Defaults to 200 ms.</p>

<p>resync_threshold: The length in milliseconds over which a timestamp difference will result in resyncing the jitterbuffer. Defaults to 1000ms.</p>

<p>target_extra: This option only affects the adaptive jitterbuffer. It represents the amount time in milliseconds by which the new jitter buffer will pad its size. Defaults to 40ms.</p>

<div class="code panel pdl" style="border-width: 1px;"><div class="codeHeader panelHeader pdl" style="border-bottom-width: 1px;"><b>Example: Fixed with defaults</b></div><div class="codeContent panelContent pdl">
<pre class="theme: Confluence; brush: text; gutter: true" style="font-size:12px;">

exten =&gt; 1,1,Set(JITTERBUFFER(fixed)=default)

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<div class="code panel pdl" style="border-width: 1px;"><div class="codeHeader panelHeader pdl" style="border-bottom-width: 1px;"><b>Example: Fixed with 200ms max size</b></div><div class="codeContent panelContent pdl">
<pre class="theme: Confluence; brush: text; gutter: true" style="font-size:12px;">

exten =&gt; 1,1,Set(JITTERBUFFER(fixed)=200)

</pre>
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<div class="code panel pdl" style="border-width: 1px;"><div class="codeHeader panelHeader pdl" style="border-bottom-width: 1px;"><b>Example: Fixed with 200ms max size, resync threshold 1500</b></div><div class="codeContent panelContent pdl">
<pre class="theme: Confluence; brush: text; gutter: true" style="font-size:12px;">

exten =&gt; 1,1,Set(JITTERBUFFER(fixed)=200,1500)

</pre>
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<div class="code panel pdl" style="border-width: 1px;"><div class="codeHeader panelHeader pdl" style="border-bottom-width: 1px;"><b>Example: Adaptive with defaults</b></div><div class="codeContent panelContent pdl">
<pre class="theme: Confluence; brush: text; gutter: true" style="font-size:12px;">

exten =&gt; 1,1,Set(JITTERBUFFER(adaptive)=default)

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<div class="code panel pdl" style="border-width: 1px;"><div class="codeHeader panelHeader pdl" style="border-bottom-width: 1px;"><b>Example: Adaptive with 200ms max size, 60ms target extra</b></div><div class="codeContent panelContent pdl">
<pre class="theme: Confluence; brush: text; gutter: true" style="font-size:12px;">

exten =&gt; 1,1,Set(JITTERBUFFER(adaptive)=200,,60)

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<div class="code panel pdl" style="border-width: 1px;"><div class="codeHeader panelHeader pdl" style="border-bottom-width: 1px;"><b>Example: Set a fixed jitterbuffer with defaults; then remove it</b></div><div class="codeContent panelContent pdl">
<pre class="theme: Confluence; brush: text; gutter: true" style="font-size:12px;">

exten =&gt; 1,1,Set(JITTERBUFFER(fixed)=default)
exten =&gt; 1,n,Set(JITTERBUFFER(disabled)=)

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                    <p class="title">Note</p>
                            <span class="aui-icon icon-hint">Icon</span>
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<p>If a channel specifies a jitterbuffer due to channel driver configuration and the JITTERBUFFER function has set a jitterbuffer for that channel, the jitterbuffer set by the JITTERBUFFER function will take priority and the jitterbuffer set by the channel configuration will not be applied.</p>

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<h3 id="Asterisk13Function_JITTERBUFFER-Syntax">Syntax</h3>


<div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent">
<pre>JITTERBUFFER(jitterbuffer type)</pre>
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<h5 id="Asterisk13Function_JITTERBUFFER-Arguments">Arguments</h5>

<ul>
	<li><code>jitterbuffer type</code>
	<ul>
		<li><code>fixed</code> - Set a fixed jitterbuffer on the channel.</li>
		<li><code>adaptive</code> - Set an adaptive jitterbuffer on the channel.</li>
		<li><code>disabled</code> - Remove a previously set jitterbuffer from the channel.</li>
	</ul>
	</li>
</ul>


<h3 id="Asterisk13Function_JITTERBUFFER-SeeAlso">See Also</h3>


<h3 id="Asterisk13Function_JITTERBUFFER-ImportVersion">Import Version</h3>

<p>This documentation was imported from Asterisk Version SVN-branch-13-r420717</p>
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                    <p>Document generated by Confluence on Aug 11, 2014 13:46</p>
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