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<div class="moz-cite-prefix"><tt>Hi John,<br>
<br>
AFAIK, there is no need to increase the cseq during normal
serial forking. The only known issue is if you do the serial
forking for authentication purposes (you received a 401/7 and
you do serial forking with credentials) - is this case you need
to increase the cseq.<br>
<br>
But once again, the classic serial forking does not require any
change in cseq.<br>
<br>
Regards,<br>
</tt>
<pre class="moz-signature" cols="72">Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
<a class="moz-txt-link-freetext" href="http://www.opensips-solutions.com">http://www.opensips-solutions.com</a></pre>
On 12.01.2015 12:09, John Nash wrote:<br>
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cite="mid:CAA4rGPwiBbWDYeYAstajgnN-e149fZC7+j7CqL4A0Mi8Zp+HmA@mail.gmail.com"
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<div>I am testing one setup where opensips drouting module
sends call to "Freeswitch" and I encountered one
situation ...<br>
<br>
</div>
UA sends Invite to opensips, opensips uses drouting module
and sends Invite to Freeswitch , callee rejects the call and
opensips sends ACK to freeswitch and sends second invite
(from failure route). This second invite (which has same
call id but different branch in via) is not treated as
another transaction by freeswitch and it sends back SIP 482
Request merged response.<br>
<br>
</div>
I had the same setup tested using SEMS as SBC some times back
successfully. I am not sure which side this issue should be
taken care of (opensips or freeswitch)<br>
<br>
</div>
I looked in some freeswitch mail archives and in one post I can
see someone suggesting that from opensips side we should
increase Cseq in case of second invite. I think this can be done
using script but I am not sure if i should do or not. <br>
This is the post<br>
<a moz-do-not-send="true"
href="http://lists.freeswitch.org/pipermail/freeswitch-users/2013-February/092600.html">http://lists.freeswitch.org/pipermail/freeswitch-users/2013-February/092600.html</a><br>
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</pre>
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