[SR-Users] Parallel Forking with Different Call-Id

[Daniel-Constantin Mierla]

Hello,

maybe you can loop through a 2nd instance of kamailio (can be same
server, different port) that has topoh enabled.

Otherwise, if the gateway is matching on full r-uri, you can try to add
some extra uri params, which are not relevant for target number.

Cheers,
Daniel


On 05/07/16 21:54, SamyGo wrote:
> Hi,
>
> I've a very strange scenario to work on which requires me to parallel
> fork the call to the same Destination provider. The only problem here
> is that they think that the second INVITE with different branch tag is
> a re-transmission and hence only take one call forward. 
>
> I do not have to modify any R-URI or any headers, hence just
> 'append_branch() before t_relay() is in the code. 
>
> ...
> $ru = "sip:" + $rU + "@" + $avp(carrier_ip) + ":" + $avp(carrier_port);
> append_branch();
> route(RELAY);
> ...
>
> *Question:* Is there anyway possible I can change the CallID of the
> forked INVITEs ?
>
> I have tried using Topoh module, but it still puts the same CallID
> before sending out. Different from the A-leg but the Sent out INVITEs
> have same Call-ID value.
>
> In other weird scenario, I've also tried branching, and looping call
> within Kamailio before sending out to carrier hoping that Kamailio
> would treat the two different calls and Topoh would change the Call-ID
> on both INVITEs before sending out..
>
> ...
> if(is_present_hf("X-FORKED")) {
>     $ru = "sip:" + $rU + "@" + $avp(carrier_ip) + ":" +
> $avp(carrier_port);
>     route(RELAY);
> }else {
>     append_hf("X-FORKED: 1\r\n");
>     append_branch();
>     route(RELAY);
> }
> ...
>
> Still I get same Call-ID on outgoing branched call.
>
> I could branch out one INVITE to a MediaServer, say
> FreeSWITCH/Asterisk but again I don't want to have that component
> bottleneck the throughput. That could be my very last option.
>
>
> Looking for some ideas.
>
> Regards,
> Sammy
>
>
>
> _______________________________________________
> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
> sr-users at lists.sip-router.org
> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users

-- 
Daniel-Constantin Mierla
http://www.asipto.com - http://www.kamailio.org
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.sip-router.org/pipermail/sr-users/attachments/20160706/5e4c609f/attachment.html>