Hi all,

Once again, thank you all for the Help.

I have one last question, can I use the function Rx_AAR_Register without save the  usr location information on ims_usrloc_pcscf? that is because  I'm already using the usrloc module with dmq_usrloc.

I know that ims_usrloc_pcscf is a dependency of ims_qos, but the doubt here is if I don't use the ims_registrar_pcscf, the usrloc_pcscf won't be used to store usr location? And the ims_qos will works correctly?

BR

José Seabra

2016-04-22 23:46 GMT+01:00 Ivailo Dobrev <ivailod@telera.eu>:

Hi Jason,

It is always better when code "guru" shares his opinion :)

Cheers gents !

On 04/23/2016 01:35 AM, Jason Penton wrote:

Hi gents,

we do not support the preliminary service information. So for now you can only call Rx_AAR when you have SDP in the replies. So for VoLTE (preconditions), for example you can call on 183 SP whilst using plain SIP you will have to call on the first reply you get that has SDP (either 183SP or 200OK).

HTH

Cheers

Jason 

On Fri, Apr 22, 2016 at 11:11 PM, Ivailo Dobrev <ivailod@telera.eu> wrote:

Yes you send both direction media information to the PCRF but when reply is received in precondition state.

On 04/23/2016 12:03 AM, José Seabra wrote:

Hello Ivailo and Franz,

Thank you for your clarifications.

Well sending an AAR when receive a reply makes all sense, but ims_qos must send the SDP information from the Initial Invite and also from 183 ringing or 200Ok,  Am I correct?

Because PCRF needs to know the session parameters from Initial Initial INVITE and the reply to it.

The PCRF is a proprietary solution. 

Thank you

BR

José Seabra

2016-04-22 21:54 GMT+01:00 Ivailo Dobrev <ivailod@telera.eu>:

Hi Franz,

There no real OS PCRF. Yota/Telexir use to had some free VM image that is OK for test. You can search about FreePCRF. It is a little tricky to configure it but ... I made for my tests a really dummy one based on FreeDIAMETER. Generally speaking PCRF is the "brain" of the network and you should understand and design things well there. I have experience also w/ commercial PCRFs and there is no real answer yes this is a right way of making something.

Cheers,

Ivo

On 04/22/2016 11:09 PM, Franz Edler wrote:

Hi José,

 

in principle it is possible to send an AAR after receiving the request. In this case the Service-Info-Status AVP is set to PRELIMINARY SERVICE INFORMATION.

More efficient is it to wait until SDP answer is received and then the Service-Info-Status AVP is set to FINAL_SERVICE_INFORMATION.

 

I don’t know if both methods are covered in ims_qos module.

 

BTW: which PCRF are you using? Is there some open source PCRF available?

 

BR

Franz

 

From: sr-users [mailto:sr-users-bounces@lists.sip-router.org] On Behalf Of José Seabra
Sent: Friday, April 22, 2016 3:58 PM
To: Kamailio (SER) - Users Mailing List <sr-users@lists.sip-router.org>
Subject: [SR-Users] Kamailio IMS_QOS

 

Hello There,

I'm trying using the ims_qos module with PCRF for QOS, but I'm facing some issues.

When kamailio receives an initial invite (originator), it will execute the function - "Rx_AAR("ORIG_SESSION_AAR","orig","",-1)", but the PCRF is not contacted and i see the following messages:

 5(12153) DEBUG: <script>: Diameter: Orig authorizing media via Rx
 5(12153) DEBUG: ims_qos [mod.c:609]: w_rx_aar(): Looking for route block [ORIG_SESSION_AAR]
 5(12153) DEBUG: ims_qos [mod.c:621]: w_rx_aar(): Rx AAR called
 5(12153) DEBUG: ims_qos [mod.c:1345]: create_return_code(): Creating return code of [-2] for aar_return_code
 5(12153) DEBUG: ims_qos [mod.c:1354]: create_return_code(): created AVP successfully : [aar_return_code]
 5(12153) DEBUG: ims_qos [mod.c:627]: w_rx_aar(): Can't do AAR for call session in request.

Why kamailio says  that I  Can't do AAR for call session in request?  I have looked into source code and I found that the condition that is blocking the communication with PCRF is:





//We don't ever do AAR on request for calling scenario...
    if (msg->first_line.type != SIP_REPLY) {
        LM_DBG("Can't do AAR for call session in request\n");
        return result;
    }

Anyone can help me understand why it is happening? why it can't proceed if isn't a reply?

Thank you for your support

BR

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José Seabra

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José Seabra

_______________________________________________
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sr-users@lists.sip-router.org
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