Daniel,

Actually, the HSS is not returning the uri with the +. There are no users int the HSS database with a public ID with a + so the HSS returns the USER_UNKNOWN.

Looking at the PCAP, the I-CSCF sends a diameter msg to the HSS asking for the verification the public ID of:

Public-Identity: sip:+alice@ims522.irisims.org

The diameter msg from HSS is returning :

AVP: Experimental-Result-Code(298) l=12 f=-M- val=DIAMETER_ERROR_USER_UNKNOWN (5001)

Why do we want the I-CSCF to add a + to all URI’s don’t start with a +?

The I-CSCF is the module that is adding the +, assuming that we should be able to included Kamailio.cfg for respective modules, is there a directive or variable that I need to set?

Or do I simply comment out that code?

Thanks,

Martin Woscek

The MITRE Corp.

mwoscek@mitre.org

Phone: 703-983-2650

FAX: 703-983-7142

From: Daniel-Constantin Mierla <miconda@gmail.com>
Sent: Tuesday, June 11, 2019 6:22 AM
To: Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.org>; Woscek, Martin W. <mwoscek@mitre.org>
Subject: [EXT] Re: [SR-Users] Kamailio 5.2.2 ICSCF changing sip to tel

Hello,

that prefix operation is done only if the r-uri username does not have +. So if you HSS is returning the r-uri with +, then all is ok, no other + is added.

On the other hand, I am not sure what is the error or the issue you try to sort out. The error message is because of the xlog(...) in the config.

Cheers,
Daniel

On 10.06.19 16:17, Woscek, Martin W. wrote:

Hello all,

The HSS is responding with 604 errors when the I-CSCF checks the public identity of the caller. PCAP attached.

It looks like our I-CSCF is modifying the sip uri’s to tel uri’s (e.164-like), referenced attached PCAP:

in_uri=sip:alice@ims522.irisims.org

out_uri=sip:+alice@ims522.irisims.org

syslog output:

Jun 6 16:50:06 imskamailio /usr/local/sbin/kamailio[14066]: ERROR: <script>: $ru => sip:+alice@irisims.org

Looking at the default (out of the box) Kamailio.cfg for I-CSCF the following script snipet is where the modification to our sip URI is happening:

# ------------------------- request routing logic -------------------

# main routing logic

route{

#!ifdef WITH_DEBUG

                xlog("I-CSCF >>>>>>>>>>>>>>>>>>>> $rm $ru ($fu => $tu ($si:$sp) to $tu, $ci)\n");

#!endif

                if !($rU =~ "\+.*") {

                                prefix("+");

                }

Is there a I-CSCF setting directive we missed?

Or should we simply comment the above?

Any advice is appreciated.

Thanks,

Martin Woscek
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