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<section id="avp_db" xmlns:xi="http://www.w3.org/2001/XInclude">
    <sectioninfo>
	<title>avp_db Module</title>
	<authorgroup>
	    <author>
		<firstname>Jiri</firstname>
		<surname>Kuthan</surname>
		<affiliation><orgname>FhG FOKUS</orgname></affiliation>
		<email>jiri@iptel.org</email>
	    </author>
	</authorgroup>
	<copyright>
	    <year>2004</year>
	    <year>2005</year>
	    <holder>FhG FOKUS</holder>
	</copyright>
	<revhistory>
	    <revision>
		<revnumber>$Revision: 1.3 $</revnumber>
		<date>$Date: 2005/08/24 22:26:17 $</date>
	    </revision>
	</revhistory>
    </sectioninfo>

    <title>Avp_db Module</title>
    
    <section id="avp_db.overview">
	<title>Overview</title>
	<para>
	    This module contains several functions that can be used to
	    manipulate the contents of AVPs (Attribute-Value pairs). The AVPs
	    are variables attached to the SIP message being processed. Each
	    variable has its name and value. AVPs can be used to store
	    arbitrary data or as a means of inter-module comminication.
	</para>
	<para>
	    You may also want to check the avpops module which is more flexible
	    and contains more functions. In future SER releases the avp module
	    will be probably deprecated in favor of avpops module.
	</para>
	<para>
	    Domain module operates in caching mode. Domain module reads the
	    default values of AVPs into cache memory when the module is
	    loaded. After that default values is re-read only when module is
	    given avp_list_reload fifo command. Any changes in
	    usr_preferences_types table must thus be followed by
	    avp_list_reload command in order to reflect them in module
	    behavior.
	</para>
    </section>
    
    <section id="avp_db.dep">
	<title>Dependencies</title>
	<para>
	    A database module, such as mysql, postgres, or dbtext.
	</para>
    </section>

    <xi:include href="params.xml"/>
    <xi:include href="functions.xml"/>
    <xi:include href="fifo.xml"/>

</section>
