<html>
<head>
<base href="https://wiki.asterisk.org/wiki">
<link rel="stylesheet" href="/wiki/s/en/2172/18/9/_/styles/combined.css?spaceKey=AST&forWysiwyg=true" type="text/css">
</head>
<body style="background: white;" bgcolor="white" class="email-body">
<div id="pageContent">
<div id="notificationFormat">
<div class="wiki-content">
<div class="email">
<h2><a href="https://wiki.asterisk.org/wiki/display/AST/Asterisk+11+Application_ChanIsAvail">Asterisk 11 Application_ChanIsAvail</a></h2>
<h4>Page <b>added</b> by <a href="https://wiki.asterisk.org/wiki/display/~wikibot">Wiki Bot</a>
</h4>
<br/>
<div class="notificationGreySide">
<h1><a name="Asterisk11Application_ChanIsAvail-ChanIsAvail%28%29"></a>ChanIsAvail()</h1>
<h3><a name="Asterisk11Application_ChanIsAvail-Synopsis"></a>Synopsis</h3>
<p>Check channel availability</p>
<h3><a name="Asterisk11Application_ChanIsAvail-Description"></a>Description</h3>
<p>This application will check to see if any of the specified channels are available.</p>
<p>This application sets the following channel variables:</p>
<ul>
<li>AVAILCHAN - The name of the available channel, if one exists</li>
<li>AVAILORIGCHAN - The canonical channel name that was used to create the channel</li>
<li>AVAILSTATUS - The device state for the device</li>
<li>AVAILCAUSECODE - The cause code returned when requesting the channel</li>
</ul>
<h3><a name="Asterisk11Application_ChanIsAvail-Syntax"></a>Syntax</h3>
<div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent">
<pre>ChanIsAvail(Technology2/Resource2[&...][,options])</pre>
</div></div>
<h5><a name="Asterisk11Application_ChanIsAvail-Arguments"></a>Arguments</h5>
<ul>
<li>Technology/Resource -
<ul>
<li>Technology2/Resource2 - Optional extra devices to checkIf you need more then one enter them as Technology2/Resource2&Technology3/Resourse3&.....Specification of the device(s) to check. These must be in the format of <tt>Technology/Resource</tt>, where <em>Technology</em> represents a particular channel driver, and <em>Resource</em> represents a resource available to that particular channel driver.</li>
</ul>
</li>
<li>options
<ul>
<li>a - Check for all available channels, not only the first one</li>
<li>s - Consider the channel unavailable if the channel is in use at all</li>
<li>t - Simply checks if specified channels exist in the channel list</li>
</ul>
</li>
</ul>
<h3><a name="Asterisk11Application_ChanIsAvail-ImportVersion"></a>Import Version</h3>
<p>This documentation was imported from Asterisk Version SVN-trunk-r370322</p>
</div>
<div id="commentsSection" class="wiki-content pageSection">
<div style="float: right;" class="grey">
<a href="https://wiki.asterisk.org/wiki/users/removespacenotification.action?spaceKey=AST">Stop watching space</a>
<span style="padding: 0px 5px;">|</span>
<a href="https://wiki.asterisk.org/wiki/users/editmyemailsettings.action">Change email notification preferences</a>
</div>
<a href="https://wiki.asterisk.org/wiki/display/AST/Asterisk+11+Application_ChanIsAvail">View Online</a>
|
<a href="https://wiki.asterisk.org/wiki/display/AST/Asterisk+11+Application_ChanIsAvail?showComments=true&showCommentArea=true#addcomment">Add Comment</a>
</div>
</div>
</div>
</div>
</div>
</body>
</html>