Minimal config of FreeSwitch

<?xml version="1.0"?>
<document type="freeswitch/xml">

<X-PRE-PROCESS cmd="set" data="local_address=$${local_ip_v4}"/>

<X-PRE-PROCESS cmd="set" data="sipnet_proxy=sipnet.ru"/>
<X-PRE-PROCESS cmd="set" data="sipnet_login=..."/>
<X-PRE-PROCESS cmd="set" data="sipnet_password=..."/>

<X-PRE-PROCESS cmd="set" data="sound_prefix=$${sounds_dir}/en/us/callie"/>

<section name="configuration">

<configuration name="switch.conf">
  <settings>
    <param name="colorize-console" value="true"/>
    <param name="max-sessions" value="1000"/>
    <param name="sessions-per-second" value="30"/>
    <param name="loglevel" value="debug"/>
  </settings>
</configuration>

<configuration name="modules.conf">
  <modules>
    <load module="mod_console"/>
    <load module="mod_logfile"/>
    <load module="mod_event_socket"/>
    <load module="mod_sofia"/>
    <load module="mod_dialplan_xml"/>
    <load module="mod_dptools"/>
    <load module="mod_commands"/>
    <load module="mod_expr"/>
    <load module="mod_sndfile"/>
  </modules>
</configuration>

<configuration name="console.conf">
  <mappings>
    <map name="all" value="console,debug,info,notice,warning,err,crit,alert"/>
  </mappings>
  <settings>
    <param name="colorize" value="true"/>
    <param name="loglevel" value="info"/>
  </settings>
</configuration>

<configuration name="logfile.conf">
  <settings>
    <param name="rotate-on-hup" value="true"/>
  </settings>
  <profiles>
    <profile name="default">
      <settings>
        <param name="logfile" value="/var/log/freeswitch/freeswitch.log"/>
        <param name="rollover" value="10485760"/>
      </settings>
      <mappings>
        <map name="all" value="debug,info,notice,warning,err,crit,alert"/>
      </mappings>
    </profile>
  </profiles>
</configuration>

<configuration name="event_socket.conf">
  <settings>
    <param name="listen-ip" value="127.0.0.1"/>
    <param name="listen-port" value="8021"/>
    <param name="password" value="ClueCon"/>
  </settings>
</configuration>

<configuration name="sofia.conf">
  <global_settings>
    <param name="log-level" value="0"/>
    <param name="debug-presence" value="0"/>
  </global_settings>
  <profiles>
    <profile name="local">
      <domains>
        <domain name="all" alias="true" parse="false"/>
      </domains>
      <settings>
        <param name="context" value="local"/>
        <param name="sip-port" value="5060"/>
        <param name="dialplan" value="XML"/>
        <param name="rtp-ip" value="$${local_address}"/>
        <param name="sip-ip" value="$${local_address}"/>
        <param name="auth-calls" value="true"/>
      </settings>
    </profile>
    <profile name="sipnet">
      <domains>
        <domain name="all" alias="false" parse="false"/>
      </domains>
      <settings>
        <param name="context" value="sipnet"/>
        <param name="sip-port" value="5080"/>
        <param name="dialplan" value="XML"/>
        <param name="rtp-ip" value="$${local_address}"/>
        <param name="sip-ip" value="$${local_address}"/>
        <param name="auth-calls" value="false"/>
      </settings>
      <gateways>
        <gateway name="sipnet">
          <param name="proxy" value="$${sipnet_proxy}"/>
          <param name="username" value="$${sipnet_login}"/>
          <param name="password" value="$${sipnet_password}"/>
        </gateway>
      </gateways>
    </profile>
  </profiles>
</configuration>

</section>

<section name="dialplan">
  <context name="local">
    <extension name="local-account-hello">
      <condition field="destination_number" expression="^100$">
        <action application="playback" data="ivr/ivr-hello.wav"/>
      </condition>
    </extension>
    <extension name="local-accounts">
      <condition field="destination_number" expression="^(10[1-3])$">
        <action application="bridge" data="user/$1@$${local_address}"/>
      </condition>
    </extension>
    <extension name="sipnet">
      <condition field="destination_number" expression="^(\d+)$">
        <action application="set" data="effective_caller_id_number=$${sipnet_login}"/>
        <action application="bridge" data="{sip_invite_domain=$${sipnet_proxy}}sofia/sipnet/$1@$${sipnet_proxy}"/>
      </condition>
    </extension>
  </context>
  <context name="sipnet">
    <extension name="local">
      <condition>
        <action application="playback" data="ivr/ivr-hello.wav"/>
        <action application="bridge" data="group/local@$${local_address}"/>
      </condition>
    </extension>
  </context>
</section>

<section name="directory">
  <domain name="$${local_address}">
    <params>
      <param name="dial-string" value="{presence_id=${dialed_user}@${dialed_domain}}${sofia_contact(${dialed_user}@${dialed_domain})}"/>
    </params>
    <groups>
      <group name="local">
        <users>
          <user id="101"><params><param name="password" value="101"/></params></user>
          <user id="102"><params><param name="password" value="102"/></params></user>
          <user id="103"><params><param name="password" value="103"/></params></user>
         </users>
      </group>
    </groups>
  </domain>
</section>

</document>