18 Apr
2016
18 Apr
'16
5:16 p.m.
Hi all,
I'm trying to make a blind call forward to "1002" if a UA calls
"1" into Kamailio. At the moment I have the following config:
if ( $rU=~"^[1]$" && src_ip==$sel(cfg_get.pstn.gw_ip) ) {
sl_send_reply("181", "Redirecting");
$ru = "sip:1002@" + $sel(cfg_get.pstn.gw_ip) +
":" + $sel(cfg_get.pstn.gw_port) + ";user=phone";
force_send_socket(udp:MY_EXTERN_IP:5060);
route(NORMAL_RELAY); #Just t_on_branch/reply/failure
if (!t_relay()) {
sl_reply_error();
}
exit;
}
The calling UA is from the PSTN as well as the called UA. Problem right now is that the
PSTN's anti-Loop protection jumps in and rejects the INVITE to 1002.
Question: Is it possible to tell the calling UA "Hey wait, 181..." with
Kamailio, then build seperately an independent Call Leg (with new CallID?) from Kamailio
to UA "1002" and finally to put them together?
Any help is very much appreciated even if they are just guides/examples. I'm using
Kamailio 4.3.5 on CentOS 7.2.
Very Respectfully
Dimitry Nagorny
Trainee
18 Apr
18 Apr
5:18 p.m.
No, Kamailio cannot build new, independent call legs. This is a function of a B2BUA.
--
Alex Balashov | Principal | Evariste Systems LLC
1447 Peachtree Street NE, Suite 700
Atlanta, GA 30309
United States
Tel: +1-800-250-5920 (toll-free) / +1-678-954-0671 (direct)
Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
Sent from my BlackBerry.
8:26 p.m.
I'm curious what issue you're trying to fix or what functionality you're
trying to add? If we know the contact, we might be able to suggest a
kamailio only solution.
On Mon, Apr 18, 2016 at 5:26 PM, Juha Heinanen <jh(a)tutpro.com> wrote:
Alex Balashov writes:
No, Kamailio cannot build new, independent call
legs. This is a
function of a B2BUA.
Yes, real easy with SEMS, for example.
-- Juha
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19 Apr
19 Apr
1:14 p.m.
On Mon, Apr 18, 2016 at 07:26:40PM +0300, Juha Heinanen wrote:
In the past I have used the topoh module with success to counter such
antiloop detection:
Avaya IPO -> calls external number -> kamailio/topoh -> terminates call on
same Avaya IPO.
But beware topoh also introduces problems in some call scenarios.
No, Kamailio
cannot build new, independent call legs. This is a
function of a B2BUA.
Yes, real easy with SEMS, for example.
1:58 p.m.
Thanks a lot Daniel! topoh-module does what I need.
Best Regards
Dimitry Nagorny
Trainee
/*-----Ursprüngliche Nachricht-----
/*Von: sr-users [mailto:sr-users-bounces@lists.sip-router.org] Im Auftrag von
/*Daniel Tryba
/*Gesendet: Dienstag, 19. April 2016 13:15
/*An: Kamailio (SER) - Users Mailing List <sr-users(a)lists.sip-router.org>
/*Betreff: Re: [SR-Users] Kamailio Blind Call Forwarding
/*
/*On Mon, Apr 18, 2016 at 07:26:40PM +0300, Juha Heinanen wrote:
/*> > No, Kamailio cannot build new, independent call legs. This is a
/*> > function of a B2BUA.
/*>
/*> Yes, real easy with SEMS, for example.
/*
/*In the past I have used the topoh module with success to counter such
/*antiloop detection:
/*Avaya IPO -> calls external number -> kamailio/topoh -> terminates call on
/*same Avaya IPO.
/*
/*But beware topoh also introduces problems in some call scenarios.
/*
/*
/*_______________________________________________
/*SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-
/*users(a)lists.sip-router.org http://lists.sip-router.org/cgi-
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5 comments
5 participants
participants (5)
-
Alex Balashov -
Daniel Tryba -
Juha Heinanen -
Marrold -
Nagorny, Dimitry