[SR-Users] Addressing a distinct PSI result is: 555 AS Contacting Failed - iFC terminated dialog

Thu Sep 22 15:32:52 CEST 2016

Hi Carsten,

I had to update the file modules/tm/t_suspend.c (see attachment).

I did following change and hope I did not cause any side effects:

               /* which route block type were we in when we were suspended */
               cb_type =  FAILURE_CB_TYPE;
               switch (t->async_backup.backup_route) {
                              case REQUEST_ROUTE:
                                            cb_type = REQUEST_CB_TYPE;
                                            break;
                              case FAILURE_ROUTE:
                                            cb_type = FAILURE_CB_TYPE;
                                            break;
                              case TM_ONREPLY_ROUTE:
                                            cb_type = ONREPLY_CB_TYPE;
                                            break;
                              case BRANCH_ROUTE:
                                            cb_type = BRANCH_CB_TYPE;
                                            break;
               }

Currently I have a local copy of latest 4.4 branch. I’m far away from bringing changes back to github (need to learn a lot more, before actively cooperating).

Kind regards,
Christoph

From: sr-users [mailto:sr-users-bounces at lists.sip-router.org] On Behalf Of Carsten Bock
Sent: Thursday, September 22, 2016 3:22 PM
To: Kamailio (SER) - Users Mailing List
Cc: Onic Roman
Subject: Re: [SR-Users] Addressing a distinct PSI result is: 555 AS Contacting Failed - iFC terminated dialog

Hi Valentin,

where was it?

Greeting from Hamburg,
Carsten

2016-09-22 14:58 GMT+02:00 Valentin Christoph <Christoph.Valentin at kapsch.net<mailto:Christoph.Valentin at kapsch.net>>:
Hi all,

No further need to investigate.

I found the bug.

Thanks,
Christoph

From: sr-users [mailto:sr-users-bounces at lists.sip-router.org<mailto:sr-users-bounces at lists.sip-router.org>] On Behalf Of Valentin Christoph
Sent: Tuesday, September 20, 2016 12:13 PM
To: sr-users at lists.sip-router.org<mailto:sr-users at lists.sip-router.org>
Cc: Onic Roman
Subject: [SR-Users] Addressing a distinct PSI result is: 555 AS Contacting Failed - iFC terminated dialog

Hi all,

I’m trying to send a call to an AS via a kamailio S-CSCF (release 4.4.3). I’m addressing the AS by a distinct PSI: sip:04325432101 at domain.net;user=gsmr.

At the first try the S-CSCF sends a SAR to HSS and receives a successful SAA (tshark traces attached), but the S-CSCF rejects the call with 555 AS Contacting Failed - iFC terminated dialog.

At the second try (a few seconds later), the S-CSCF doesn’t exchange  SAR/SAA with the HSS, and now the call is successfully forwarded to the AS.

This problem is permanent, it is not the result of a temporary loss of connectivity between S-CSCF and AS.

I checked the iFCs that I had configured at the HSS and I think, they are OK.

I attached

-        tshark traces from the node, where the S-CSCF resides: 2016_09_19_error_555_17_scscf_filtered.pcap

-        WITH_DEBUG logs from kamailio: 2016_09_19_error_555_17_kamailio_1st_try.log

-        A tarball of /usr/local/etc/kamailio: 2016_09_19_error_555_17_kamailio.tar.gz

Can anybody help? Is it a bug in kamailio or is the problem on my side?

Thanks,
Christoph

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