I am using following sip trunk detail in my xlite it work fine and i can able to make call but when i use with my freeswitch in gateway ,I am always getting 403 error i understand have problem in my gateway config xml.
<include>
<gateway name="reliance">
<param name="username" value="trunkusername" />
<param name="password" value="trunkpassword" />
<param name="proxy" value="10.21.254.231" />
<param name="register" value="true" />
<param name="ping" value="5" />
<param name="ping-max" value="3" />
<param name="retry-seconds" value="5" />
<param name="expire-seconds" value="60" />
<param name="context" value="public"/>
<variables>
<variable name="verbose_sdp" value="true"/>
</variables>
</gateway>
</include>