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<p class=MsoNormal>I’ve been tearing my hair out trying to get a Polycom
phone (behind a NAT) to register to an * box behind a Cisco SIP ALG. With
known good credentials configured on the phone and in *, I get 403 Bad Auth
when trying to register. If I put the phone onto the same LAN as * it
works fine without changing any authentication parameters whatsoever. If
I make the secret blank (null) on the phone and *, it’s registers fine.
An X-Lite softphone works fine, and I already have a Cisco 7960 working in the
same scenario but no go with the Polycom (I’ve tried a few different
firmware versions, currently up to 2.02).</p>
<p class=MsoNormal> </p>
<p class=MsoNormal>I also have configured Polycoms behind NAT to configure to *
that is not behind a SIP ALG many times without trouble…it’s just
with the SIP ALG that I’ve hit this wall…</p>
<p class=MsoNormal> </p>
<p class=MsoNormal>I found this forum thread which seems to pinpoint the issue,
but I’m not really understanding the suggested fix. Does anyone out there
understand the MD5 challenge/response and URI stuff that can give me some clue
what to do?</p>
<p class=MsoNormal> </p>
<p class=MsoNormal><a href="http://forum.voxilla.com/asterisk-support-forum/sipura-asterisk-registration-failed-wrong-password-18730.html">http://forum.voxilla.com/asterisk-support-forum/sipura-asterisk-registration-failed-wrong-password-18730.html</a></p>
<p class=MsoNormal> </p>
<p class=MsoNormal> </p>
<p class=MsoNormal>Thanks!</p>
<p class=MsoNormal> </p>
<p class=MsoNormal>mmastera</p>
<p class=MsoNormal> </p>
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Checked by AVG Free Edition.<BR>
Version: 7.5.484 / Virus Database: 269.12.1/963 - Release Date: 8/20/2007 5:44 PM<BR>
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