documentation: Document built-in system and channel vars
Documentation for built-in special system and channel vars is currently outdated, and updating is a manual process since there is no XML documentation for these anywhere. This adds documentation for system vars to func_env and for channel vars to func_channel so that they appear along with the corresponding fields that would be accessed using a function. ASTERISK-29848 #close Change-Id: I6997f925c4a45fffe71321861f5898a8b7182fa9
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@ -278,6 +278,41 @@
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same => n,Log(NOTICE, This channel is: ${CHANNEL(state)})
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</example>
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<xi:include xpointer="xpointer(/docs/info[@name='CHANNEL_EXAMPLES'])" />
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<para>The following channel variables are available as special built-in
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dialplan channel variables. These variables cannot be set or modified
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and are read-only.</para>
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<variablelist>
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<variable name="CALLINGPRES">
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<para>Caller ID presentation for incoming calls (PRI channels)</para>
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</variable>
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<variable name="CALLINGANI2">
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<para>Caller ANI2 (PRI channels)</para>
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</variable>
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<variable name="CALLINGTON">
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<para>Caller Type of Number (PRI channels)</para>
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</variable>
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<variable name="CALLINGTNS">
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<para>Transit Network Selector (PRI channels)</para>
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</variable>
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<variable name="EXTEN">
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<para>Current extension</para>
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</variable>
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<variable name="CONTEXT">
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<para>Current context</para>
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</variable>
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<variable name="PRIORITY">
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<para>Current priority</para>
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</variable>
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<variable name="CHANNEL">
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<para>Current channel name</para>
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</variable>
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<variable name="UNIQUEID">
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<para>Current call unique identifier</para>
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</variable>
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<variable name="HANGUPCAUSE">
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<para>Asterisk cause of hangup (inbound/outbound)</para>
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</variable>
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</variablelist>
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</description>
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</function>
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***/
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@ -49,6 +49,55 @@
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</syntax>
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<description>
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<para>Variables starting with <literal>AST_</literal> are reserved to the system and may not be set.</para>
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<para>Additionally, the following system variables are available as special built-in dialplan variables.
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These variables cannot be set or modified and are read-only.</para>
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<variablelist>
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<variable name="EPOCH">
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<para>Current unix style epoch</para>
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</variable>
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<variable name="SYSTEMNAME">
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<para>value of the <literal>systemname</literal> option from <literal>asterisk.conf</literal></para>
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</variable>
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<variable name="ASTCACHEDIR">
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<para>value of the <literal>astcachedir</literal> option from <literal>asterisk.conf</literal></para>
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</variable>
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<variable name="ASTETCDIR">
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<para>value of the <literal>astetcdir</literal> option from <literal>asterisk.conf</literal></para>
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</variable>
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<variable name="ASTMODDIR">
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<para>value of the <literal>astmoddir</literal> option from <literal>asterisk.conf</literal></para>
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</variable>
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<variable name="ASTVARLIBDIR">
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<para>value of the <literal>astvarlib</literal> option from <literal>asterisk.conf</literal></para>
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</variable>
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<variable name="ASTDBDIR">
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<para>value of the <literal>astdbdir</literal> option from <literal>asterisk.conf</literal></para>
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</variable>
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<variable name="ASTKEYDIR">
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<para>value of the <literal>astkeydir</literal> option from <literal>asterisk.conf</literal></para>
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</variable>
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<variable name="ASTDATADIR">
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<para>value of the <literal>astdatadir</literal> option from <literal>asterisk.conf</literal></para>
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</variable>
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<variable name="ASTAGIDIR">
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<para>value of the <literal>astagidir</literal> option from <literal>asterisk.conf</literal></para>
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</variable>
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<variable name="ASTSPOOLDIR">
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<para>value of the <literal>astspooldir</literal> option from <literal>asterisk.conf</literal></para>
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</variable>
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<variable name="ASTRUNDIR">
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<para>value of the <literal>astrundir</literal> option from <literal>asterisk.conf</literal></para>
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</variable>
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<variable name="ASTLOGDIR">
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<para>value of the <literal>astlogdir</literal> option from <literal>asterisk.conf</literal></para>
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</variable>
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<variable name="ASTSBINDIR">
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<para>value of the <literal>astsbindir</literal> option from <literal>asterisk.conf</literal></para>
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</variable>
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<variable name="ENTITYID">
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<para>Global Entity ID set automatically, or from <literal>asterisk.conf</literal></para>
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</variable>
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</variablelist>
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</description>
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</function>
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<function name="STAT" language="en_US">
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