Someone

    <configuration name="exosip.conf" description="Exosip Endpoint">
      <settings>
        <param name="port" value="5060"/>
        <param name="dialplan" value="XML"/>
        <param name="dtmf-duration" value="100"/>
        <param name="codec-prefs" value="PCMU,PCMA"/>
        <!-- Payload number to bind DTMF to-->
        <param name="rfc2833-pt" value="101"/>
        <!-- disable to trade async for more calls -->
        <param name="use-rtp-timer" value="true"/>
        <!-- auto sense NAT issues and adjust accordingly -->
        <param name="use-rtp-auto-adjust" value="false"/>
        <!-- pick one (default if not specified is 'guess'); -->
        <param name="rtp-ip" value="guess"/>
        <!-- <param name-"rtp-ip" value="10.0.0.1"/> -->
        <!-- leave commented or 0.0.0.0 for all ip -->
        <!-- <param name="sip-ip" value="127.0.0.1"/> -->

        <!-- optional ; -->
        <!-- <param name="ext-rtp-ip" value="stun:stun.server.com"/> -->
        <param name="ext-rtp-ip" value="stun:stun.fwdnet.net"/>
        <!-- <param name="ext-rtp-ip" value="100.101.102.103"/> -->

        <!-- specify 'myrealm' with certian key -->
        <!-- use !myrealm! at beginning of url to activate -->
        <!-- exosip/!myrealm!1000@dest -->
        <!-- srtp:<param name="myrealm" value="ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"/> -->

        <!-- VAD choose one (out is a good choice); -->
        <!-- <param name="vad" value="in"/> -->
        <!--        <param name="vad" value="out"/> -->
        <!-- <param name="vad" value="both"/> -->
        <param name="debug" value="true"/>
      </settings>

    </configuration>