Hello Ali,
I think we had the similar problem. Then we found the S-CSCF configuration file
contains following snippet in main routing block:
if (($route_uri =~ "sip:orig@.*") || isc_from_as("orig")) {
xlog("Orig");
# we need something like this to assign SCSCF to
unregistered user for services
# support for AS origination on behalf of
unregistered useri
# can use the registrar is_registered methods -
must see if we need to check orig or term?
# Originating
route(orig);
break;
} else {
And we understood, if the AS originates an initial Request (as opposed to
forwarding it), then the S-CSCF should act as an originating S-CSCF, too.
So the AS that performs an “originating, unregistered” service, must add a
“Route” header with the indication of origin, e.g.
Route: <sip:[email protected]:5060;lr>
To address the originating S-CSCF.
Just my two cent.
KR,
Christoph
From: sr-users <[email protected]> On Behalf Of Ali Shirvani
Sent: Wednesday, July 24, 2019 2:49 PM
To: Kamailio (SER) - Development Mailing List <[email protected]>
Cc: Kamailio (SER) - Users Mailing List <[email protected]>
Subject: Re: [SR-Users] [sr-dev] IMS_ISC technical specification
Hello Mojtaba,
Thanks for your reply. You are completely correct, my current configuration
work fine when request initiated from UEs, but I want to handle SIP requests
that initiated by application server.
When UE sends request to S-CSCF, kamailio fetch iFC from HSS and check if the
request match with iFC or not, if it matched kamailio forward the request to
the application server.
But when application server send request to S-CSCF, isc_from_as('orig') return
false and I couldn't forward request to the target UE.
Regards,
Ali
On Wed, Jul 24, 2019 at 3:45 PM Mojtaba
<[email protected]<mailto:[email protected]>> wrote:
Hello Ali,
The SCSCF has IFC service for decision what it should do with incoming SIP
message. During check all rules in IFC, If it match with one or some rules,
actually it marked with that rules. Then the real meaning of marking is the SIP
message is matched with one or some rules in IFC.
With Best Regards.
On Wed, Jul 24, 2019 at 2:48 PM Ali Shirvani
<[email protected]<mailto:[email protected]>> wrote:
Hi all,
I read some portion of imc_isc_mod.c, specially isc_from_as function. In that
function there is some function call that searching for some marks in the SIP
message. Also I read section 5.7.3 from TS 24.229 but I didn't find the marking
mechanism that used in isc_from_as function.
Would you please point me to the technical specification that implemented in
IMS_ISC module?
Regards,
Ali
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--Mojtaba Esfandiari.S
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