<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">I cannot change the way SIP Authentication works. The first register is always sent without an authorization header then is challenged. If you're getting an instant 403 then you have something wrong in your config and the remote system doesn't like it. Please contact your provider and ask them to troubleshoot it with you.<div><br></div><div>/b</div><div><br><div><div><div>On Sep 4, 2009, at 3:43 AM, Dmitry Bely wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><br>Alas, I cannot change the way the provider's gateway works. It<br>immediately responses with 403... BTW, it's Mera Damos<br>(<a href="http://www.mera-systems.com ?">http://www.mera-systems.com ?</a>). No workaround possible?<br></span></blockquote></div><br></div></div></body></html>