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<!-- Module User's Guide -->

<chapter>
	
	<title>&adminguide;</title>
	
	<section>
	<title>Overview</title>
	<para>
		 The pua_usrloc module is the connector between the usrloc and pua modules.
		 With this module, you can monitor the status of SIP registrations.
		 The module sends PUBLISH requests for user location record changes, 
		 based on specific events (e.g., when a new record is
		 added in usrloc, a PUBLISH with status open (online) is issued;
		 when expires, it sends closed (offline)).
	</para>
	<para>
		Using this module phones which have no support for presence can
		be seen as online/offline. 
	</para>
	</section>
		<section>
	<title>Dependencies</title>
	<section>
		<title>&kamailio; Modules</title>
		<para>
		The following modules must be loaded before this module:
			<itemizedlist>
			<listitem>
			<para>
				<emphasis>usrloc</emphasis>.
			</para>
			</listitem>
			<listitem>
			<para>
				<emphasis>pua</emphasis>.
			</para>
			</listitem>
			</itemizedlist>
		</para>
	</section>
	<section>
		<title>External Libraries or Applications</title>
		<para>
		The following libraries or applications must be installed before running
		&kamailio; with this module loaded:
			<itemizedlist>
			<listitem>
			<para>
				<emphasis>libxml</emphasis>.
			</para>
			</listitem>
			</itemizedlist>
		</para>
	</section>
	</section>
	<section>
	<title>Parameters</title>
	<section>
		<title><varname>default_domain</varname> (str)</title>
		<para>
		The default domain to use when constructing the presentity
		URI if it is missing from stored AOR in the usrloc table (in
		memory or database). 
		</para>
		<para>
		<emphasis>Default value is <quote>NULL</quote>.	
		</emphasis>
		</para>
		<example>
		<title>Set <varname>default_domain</varname> parameter</title>
		<programlisting format="linespecific">
...
modparam("pua_usrloc", "default_domain", "kamailio.org")
...
</programlisting>
		</example>
</section>
	<section>
		<title><varname>entity_prefix</varname> (str)</title>
		<para>
		The prefix used when constructing the entity attribute to be added to
		a presence node in the XML PIDF document.
		(ex: pres:user@domain ).
		</para>
		<para>
		<emphasis>Default value is <quote>NULL</quote>.	
		</emphasis>
		</para>
		<example>
		<title>Set <varname>presentity_prefix</varname> parameter</title>
		<programlisting format="linespecific">
...
modparam("pua_usrloc", "entity_prefix", "pres")
...
</programlisting>
		</example>
</section>

	<section>
		<title><varname>branch_flag</varname> (int)</title>
		<para>
		Which branch flag to be used to select the contact addresses for which
		to generate PUBLISH. Valid values are 0 to 31.
		</para>
		<para>
		<emphasis>Default value is <quote>-1</quote> (disabled).	
		</emphasis>
		</para>
		<example>
		<title>Set <varname>branch_flag</varname> parameter</title>
		<programlisting format="linespecific">
...
modparam("pua_usrloc", "branch_flag", 9)
...
</programlisting>
		</example>
	</section>

</section>
<section>
	<title>Functions</title>
		<section>
				<title>
				<function moreinfo="none">pua_set_publish()</function>
				</title>
			<para>
				The function is used to mark REGISTER requests that have to
				issue a PUBLISH. The PUBLISH is issued when REGISTER is saved
				in location table.
			</para>
			<para>
			</para>
		<example>
		<title><function>pua_set_publish</function> usage</title>
	<programlisting format="linespecific">
...
if(is_method("REGISTER") &amp;&amp; from_uri=~"john@kamailio.org") 
	pua_set_publish();		
...
</programlisting>
		</example>

		</section>

</section>		

</chapter>

