From medeiros at medeiros.eng.br  Sat Jun  1 00:11:28 2019
From: medeiros at medeiros.eng.br (Romeu Medeiros)
Date: Fri, 31 May 2019 21:11:28 -0300
Subject: PCAP file from a CSFB
Message-ID: <CAL=AzhqcLFYJB71c+AYeh47gqALzYC3pki9-eKTB6oeB2VsxUw@mail.gmail.com>

Hello to all.

Someone have a pcap from a CSFB to send to me?

I will have some freetime and i want implement this in the nextepc.

Thanks

Romeu Medeiros
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From acetcom at gmail.com  Sun Jun  2 02:48:50 2019
From: acetcom at gmail.com (Sukchan Lee)
Date: Sun, 2 Jun 2019 11:48:50 +0900
Subject: PCAP file from a CSFB
In-Reply-To: <CAL=AzhqcLFYJB71c+AYeh47gqALzYC3pki9-eKTB6oeB2VsxUw@mail.gmail.com>
References: <CAL=AzhqcLFYJB71c+AYeh47gqALzYC3pki9-eKTB6oeB2VsxUw@mail.gmail.com>
Message-ID: <CAKoHG8AVyfPWSD=cUhxm6XvbioUubPLn+J-t2EuGaW9UtgLu0Q@mail.gmail.com>

Hi Romeu,

First, thank you for helping to improve NextEPC.

Of course, I also do not have a pcap file related to CSFB. However, I've
re-designed the socket library so that you can easily implement this
function.

In the new socket library, you only need to create sgsap-path.c. The common
part of the remaining SCTP is handled by ogs-sctp.c.

Please let me know if you want to access github directly. Of course, you
can use the pull-request method. Use the convenient method.

Please feel free to contact me if you have any questions.

Thanks a lot!


2019? 6? 1? (?) ?? 9:11, Romeu Medeiros <medeiros at medeiros.eng.br>?? ??:

> Hello to all.
>
> Someone have a pcap from a CSFB to send to me?
>
> I will have some freetime and i want implement this in the nextepc.
>
> Thanks
>
> Romeu Medeiros
>
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From acetcom at gmail.com  Sun Jun  2 03:02:19 2019
From: acetcom at gmail.com (Sukchan Lee)
Date: Sun, 2 Jun 2019 12:02:19 +0900
Subject: Configuration of SGSAP
Message-ID: <CAKoHG8AKqooqXVZKFRoT+jW98FAoySJXM3B4cgip5h-KoTv89w@mail.gmail.com>

Hi,

I need to implement SGsAP before I go to a CSFB. I have one question about
the configuration.

I gonna create a configuration of mme.conf as shown below.

mme:
    sgsap:
      addr: 127.0.0.2
      tai:
        plmn_id:
          mcc: 001
          mnc: 01
        tac: 4130
      lai:
        plmn_id:
          mcc: 001
          mnc: 01
        lac: 43690

However, if both TAC and LAC are alway the same PLMN_ID, the configuration
can be changed as follows:

mme:
    sgsap:
      addr: 127.0.0.2
      plmn_id:
        mcc: 001
        mnc: 01
      tac: 4130
      lac: 43690

I don't have enough knowledge about 2G/3G, so I hesitate in this part for a
while. Perhaps, I will do it the first way. Do you have anybody to help?

P.S.
You can see the full configuration in this like:
https://github.com/open5gs/nextepc/blob/master/support/config/nextepc.conf.in

Thanks a lot!
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From medeiros at medeiros.eng.br  Sun Jun  2 03:41:58 2019
From: medeiros at medeiros.eng.br (Romeu Medeiros)
Date: Sun, 2 Jun 2019 00:41:58 -0300
Subject: PCAP file from a CSFB
In-Reply-To: <CAKoHG8AVyfPWSD=cUhxm6XvbioUubPLn+J-t2EuGaW9UtgLu0Q@mail.gmail.com>
References: <CAL=AzhqcLFYJB71c+AYeh47gqALzYC3pki9-eKTB6oeB2VsxUw@mail.gmail.com>
 <CAKoHG8AVyfPWSD=cUhxm6XvbioUubPLn+J-t2EuGaW9UtgLu0Q@mail.gmail.com>
Message-ID: <CAL=AzhpSC1X=rOTyJLGvovL-JTyyb7_8bYhjHdxCY613SkOcjg@mail.gmail.com>

Hello Sukchan Lee,

The nextepc is a great project and I want help you any time that I can.

I tried made some CSFB code here, just reading the documentation about
this, but all time I get a "Initial Context Setup Failure" from the eNodeb,
with this error above:

[image: image.png]

I will try some modifications this week, if I get sucess I let you know.

Thanks for u help! and congrats for this great project.

Romeu Medeiros

On Sat, Jun 1, 2019 at 11:49 PM Sukchan Lee <acetcom at gmail.com> wrote:

> Hi Romeu,
>
> First, thank you for helping to improve NextEPC.
>
> Of course, I also do not have a pcap file related to CSFB. However, I've
> re-designed the socket library so that you can easily implement this
> function.
>
> In the new socket library, you only need to create sgsap-path.c. The
> common part of the remaining SCTP is handled by ogs-sctp.c.
>
> Please let me know if you want to access github directly. Of course, you
> can use the pull-request method. Use the convenient method.
>
> Please feel free to contact me if you have any questions.
>
> Thanks a lot!
>
>
> 2019? 6? 1? (?) ?? 9:11, Romeu Medeiros <medeiros at medeiros.eng.br>?? ??:
>
>> Hello to all.
>>
>> Someone have a pcap from a CSFB to send to me?
>>
>> I will have some freetime and i want implement this in the nextepc.
>>
>> Thanks
>>
>> Romeu Medeiros
>>
>
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From laforge at gnumonks.org  Tue Jun  4 07:45:14 2019
From: laforge at gnumonks.org (Harald Welte)
Date: Tue, 4 Jun 2019 09:45:14 +0200
Subject: Configuration of SGSAP
In-Reply-To: <CAKoHG8AKqooqXVZKFRoT+jW98FAoySJXM3B4cgip5h-KoTv89w@mail.gmail.com>
References: <CAKoHG8AKqooqXVZKFRoT+jW98FAoySJXM3B4cgip5h-KoTv89w@mail.gmail.com>
Message-ID: <20190604074514.GQ22070@nataraja>

Hi Sukchan,

On Sun, Jun 02, 2019 at 12:02:19PM +0900, Sukchan Lee wrote:
> However, if both TAC and LAC are alway the same PLMN_ID, the configuration
> can be changed as follows:

I would expect that the "primary" MCC/MNC are always the same for the MSC and MME 
of one particular network.  There are many different strategies of broadcasting
"equivalent" PLMNs, and for RAN sharing (MOCN, ...) but I believe that this
doesn't affect the SGsAP interface.

Please note I may be wrong, my experience with "multi PLMN" scenarios is rather
limited.

Regards,
	Harald
-- 
- Harald Welte <laforge at gnumonks.org>           http://laforge.gnumonks.org/
============================================================================
"Privacy in residential applications is a desirable marketing option."
                                                  (ETSI EN 300 175-7 Ch. A6)


From laforge at gnumonks.org  Tue Jun  4 08:15:42 2019
From: laforge at gnumonks.org (Harald Welte)
Date: Tue, 4 Jun 2019 10:15:42 +0200
Subject: PCAP file from a CSFB
In-Reply-To: <CAKoHG8AVyfPWSD=cUhxm6XvbioUubPLn+J-t2EuGaW9UtgLu0Q@mail.gmail.com>
References: <CAL=AzhqcLFYJB71c+AYeh47gqALzYC3pki9-eKTB6oeB2VsxUw@mail.gmail.com>
 <CAKoHG8AVyfPWSD=cUhxm6XvbioUubPLn+J-t2EuGaW9UtgLu0Q@mail.gmail.com>
Message-ID: <20190604081542.GR22070@nataraja>

Hi Sukchan and Romeu,

we are running an automated test suite for the SGsAP interface of OsmoMSC.

In this situation, the test suite implements/emulates the MME side.

The test source code can be found in osmo-ttcn3-hacks.git on git.osmocom.org,
specifically in the 'msc' subdirectory.

However, you don't need to run the test suite to get access to the pcap files,
as our jenkins continuous integration server is publishing  a pcap file for each
and every test case that gets executed every night.

You can e.g. find the results of todays build at:
https://jenkins.osmocom.org/jenkins/view/TTCN3/job/ttcn3-msc-test/561/artifact/logs/msc-tester/

you will liekely be interested in the MSC_Tests.TC_sgsap_*.pcap files like
https://jenkins.osmocom.org/jenkins/view/TTCN3/job/ttcn3-msc-test/561/artifact/logs/msc-tester/MSC_Tests.TC_sgsap_lu_and_mt_call.pcap

Please feel free to keep Philipp and/or me in Cc.  Philipp is the developer
implementing the MSC side of SGsAP in Osmocom.

Regards,
	Harald
-- 
- Harald Welte <laforge at gnumonks.org>           http://laforge.gnumonks.org/
============================================================================
"Privacy in residential applications is a desirable marketing option."
                                                  (ETSI EN 300 175-7 Ch. A6)


From acetcom at gmail.com  Tue Jun  4 12:52:08 2019
From: acetcom at gmail.com (Sukchan Lee)
Date: Tue, 4 Jun 2019 21:52:08 +0900
Subject: PCAP file from a CSFB
In-Reply-To: <20190604081542.GR22070@nataraja>
References: <CAL=AzhqcLFYJB71c+AYeh47gqALzYC3pki9-eKTB6oeB2VsxUw@mail.gmail.com>
 <CAKoHG8AVyfPWSD=cUhxm6XvbioUubPLn+J-t2EuGaW9UtgLu0Q@mail.gmail.com>
 <20190604081542.GR22070@nataraja>
Message-ID: <CAKoHG8DGm-ba1LSf02db7PMeGFroEzcf9Y2bCrFGmChPPZ=zuw@mail.gmail.com>

Hi Harald,

This is really nice pcap file. This will a great help for NextEPC to
support CSFB feature quickly.
Thanks a lot!

Best Regards,
     Sukchan



On Tue, Jun 4, 2019 at 5:16 PM Harald Welte <laforge at gnumonks.org> wrote:

> Hi Sukchan and Romeu,
>
> we are running an automated test suite for the SGsAP interface of OsmoMSC.
>
> In this situation, the test suite implements/emulates the MME side.
>
> The test source code can be found in osmo-ttcn3-hacks.git on
> git.osmocom.org,
> specifically in the 'msc' subdirectory.
>
> However, you don't need to run the test suite to get access to the pcap
> files,
> as our jenkins continuous integration server is publishing  a pcap file
> for each
> and every test case that gets executed every night.
>
> You can e.g. find the results of todays build at:
>
> https://jenkins.osmocom.org/jenkins/view/TTCN3/job/ttcn3-msc-test/561/artifact/logs/msc-tester/
>
> you will liekely be interested in the MSC_Tests.TC_sgsap_*.pcap files like
>
> https://jenkins.osmocom.org/jenkins/view/TTCN3/job/ttcn3-msc-test/561/artifact/logs/msc-tester/MSC_Tests.TC_sgsap_lu_and_mt_call.pcap
>
> Please feel free to keep Philipp and/or me in Cc.  Philipp is the developer
> implementing the MSC side of SGsAP in Osmocom.
>
> Regards,
>         Harald
> --
> - Harald Welte <laforge at gnumonks.org>
> http://laforge.gnumonks.org/
>
> ============================================================================
> "Privacy in residential applications is a desirable marketing option."
>                                                   (ETSI EN 300 175-7 Ch.
> A6)
>
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