<param name="username" value="12345678ip"/>
<param name="from-user" value="12345678ip"/>
<param name="from-domain" value="empresa1"/>
<param name="password" value="6389"/>
<param name="extension-in-contact" value="true"/>
<param name="proxy" value="0.0.0.0"/>
<param name="register-proxy" value="0.0.0.0"/>
<param name="register-transport" value="udp"/>
<param name="caller-id-in-from" value="true"/>