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

<chapter>

	<title>&adminguide;</title>

	<section>
	<title>Overview</title>
	<para>
		ACC_DIAMETER module is used to account transactions information to a
		DIAMETER server. Read also the documentation for 'acc' module.
	</para>
	<para>
		NOTE: This was developed based on some very early version of
		the <acronym>Diameter</acronym> protocol, and has not been really
		tested for many years. It is very likely to be deleted in upcoming
		releases. If you want to revive this module, you are welcome, be sure
		you do proper testing before using in production -- it also may need to
		be updated first to match the exported API by 'acc' module.
	</para>
	<para>
		NOTE: diameter support was developed for DISC (DIameter Server Client
		project at http://developer.berlios.de/projects/disc/). This project
		seems to be no longer maintained and DIAMETER specifications were updated
		in the meantime. Thus, the DIAMETER part in the module is obsolete and
		needs rework to be usable with opendiameter or other DIAMETER servers.
	</para>
	<para>
		IMPORTANT: If you need Diameter accounting, consider to use the
		<acronym>ims_charging</acronym> module, it is up to date and used in
		IMS/VoLTE deployments.
	</para>
	</section>
	<section>
		<title>Dependencies</title>
		<section>
			<title>&kamailio; Modules</title>
			<para>
			The module depends on the following modules (in other words
			the listed modules must be loaded before this module):
			<itemizedlist>
				<listitem>
				<para><emphasis>acc</emphasis> -- accounting module</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:
			</para>
			<itemizedlist>
				<listitem>
				<para>None</para>
				</listitem>
			</itemizedlist>
		</section>
	</section>

	<section id="acc_diameter.i.params">
	<title>Parameters</title>
	<!-- DIAMETER specific ACC parameters -->
	<section id="acc_diameter.p.diameter_flag">
		<title><varname>diameter_flag</varname> (integer)</title>
		<para>
		Request flag which needs to be set to account a
		transaction -- DIAMETER specific.
		</para>
		<para>
		Default value is not-set (no flag).
		</para>
		<example>
		<title>diameter_flag example</title>
		<programlisting format="linespecific">
...
modparam("acc_diameter", "diameter_flag", 2)
...
</programlisting>
		</example>
	</section>
	<section id="acc_diameter.p.diameter_missed_flag">
		<title><varname>diameter_missed_flag</varname> (integer)</title>
		<para>
		Request flag which needs to be set to account missed
		calls -- DIAMETER specific.
		</para>
		<para>
		Default value is not-set (no flag).
		</para>
		<example>
		<title>diameter_missed_flag example</title>
		<programlisting format="linespecific">
...
modparam("acc_diameter", "diameter_missed_flag", 3)
...
</programlisting>
		</example>
	</section>
	<section id="acc_diameter.p.diameter_client_host">
		<title><varname>diameter_client_host</varname> (string)</title>
		<para>
		Hostname of the machine where the DIAMETER Client is
		running -- DIAMETER specific.
		</para>
		<para>
		Default value is <quote>localhost</quote>.
		</para>
		<example>
		<title>diameter_client_host example</title>
		<programlisting format="linespecific">
...
modparam("acc_diameter", "diameter_client_host", "3a_server.net")
...
</programlisting>
		</example>
	</section>
	<section id="acc_diameter.p.diameter_client_port">
		<title><varname>diameter_client_port</varname> (int)</title>
		<para>
		Port number where the Diameter Client is
		listening -- DIAMETER specific.
		</para>
		<para>
		Default value is 3000.
		</para>
		<example>
		<title>diameter_client_host example</title>
		<programlisting format="linespecific">
...
modparam("acc_diameter", "diameter_client_port", 3000)
...
</programlisting>
		</example>
	</section>
	<section id="acc_diameter.p.diameter_extra">
		<title><varname>diameter_extra</varname> (string)</title>
		<para>
		Extra values to be logged via DIAMETER - DIAMETER specific.
		See section the section about extra accounting in 'acc' module for more
		details.
		</para>
		<para>
		Default value is NULL.
		</para>
		<example>
		<title>diameter_extra example</title>
		<programlisting format="linespecific">
...
modparam("acc_diameter", "diameter_extra", "7846=$hdr(Content-type);7847=$avp(s:email)")
...
</programlisting>
		</example>
	</section>
	</section>

	<section>
	<title>Functions</title>
	<section id="acc_diameter.f.acc_diam_request">
		<title>
			<function moreinfo="none">acc_diam_request(comment)</function>
		</title>
		<para>
		Like <function moreinfo="none">acc_log_request</function>,
		<function moreinfo="none">acc_diam_request</function> reports on
		a request. It reports to the configured Diameter server.
		</para>
		<para>
		Meaning of the parameters is as follows:</para>
		<itemizedlist>
		<listitem>
			<para><emphasis>comment</emphasis> - Comment to be appended.
			The string can contain any number of pseudo-variables.
			</para>
		</listitem>
		</itemizedlist>
		<para>
		This function can be used from ANY_ROUTE.
		</para>
		<example>
		<title>acc_diam_request usage</title>
		<programlisting format="linespecific">
...
acc_diam_request("Some comment");
acc_diam_request("$var(code) Error: $avp(reason)");
...
</programlisting>
		</example>
	</section>
	</section>
</chapter>

