<br><font size=2 face="sans-serif">Hi,</font>
<br>
<br><font size=2 face="sans-serif">I'm testing sip trunking on Asterisk
(v1.4.0-beta3) with various voip service providers and stumbled on this</font>
<br><font size=2 face="sans-serif">issue. This very well may be
a known issue or something misconfigured in my extensions.conf/sip.conf
files.</font>
<br><font size=2 face="sans-serif">The service provider requires registration
and authentication. The asterisk is registered for incoming calls
which</font>
<br><font size=2 face="sans-serif">work fine. Problem is with outbound
calls from asterisk which the service provider authenticates (user/passwd</font>
<br><font size=2 face="sans-serif">already configured in config files and
tested).</font>
<br>
<br><font size=2 face="sans-serif">1. Asterisk sends INVITE to primary
voip server service provider (SP)</font>
<br><font size=2 face="sans-serif">2. SP responds with 302 redirect with
secondary server as a contact</font>
<br><font size=2 face="sans-serif">3. Asterisk re-INVITES to secondary
server</font>
<br><font size=2 face="sans-serif">4. Secondary server challenges with
a 401 Unauthorized</font>
<br><font size=2 face="sans-serif">5. Asterisk does NOT re-invite with
the authentication fields even though they are configured</font>
<br><font size=2 face="sans-serif">properly.</font>
<br>
<br><font size=2 face="sans-serif">If Asterisk INVITE's directly to Secondary
server and avoids the 302, asterisk properly autheniticates after the 401</font>
<br><font size=2 face="sans-serif">and call goes thru succesfully (thats
how I know the credentials work).</font>
<br>
<br><font size=2 face="sans-serif">Does anyone know if this is a known
limitation (being fixed in the next beta version) or if this</font>
<br><font size=2 face="sans-serif">may be configuration related?</font>
<br>
<br><font size=2 face="sans-serif">Thanks,</font>
<br><font size=2 face="sans-serif">Mushtaq Ahmed</font>
<br><font size=2 face="sans-serif">3Com Corporation</font>
<br>