Hi,<br>&nbsp;&nbsp;&nbsp; Is there any way to enforce security on SIP invite Messages, The SIP proxy should send&nbsp;<span lang="EN-US"><span style="font-weight: bold;"> </span>407 (Proxy Authentication Required) in response to first INVITE.
</span><br clear="all"><br>-- <br>Best Regards,<br>Arshad <br><br>