<div dir="ltr">I found this in the 3GPP documentations [1]:<div><br></div><div><div><img src="cid:ii_jy22br0z1" alt="image.png" width="472" height="71"><br></div></div><div><br></div><div>I will change the code to send only the CSFallback indicator in this case to see if can solve the problem.</div><div><br></div><div>Thanks</div><div><br></div><div>Romeu Medeiros</div><div><br></div><div>1.<a href="https://www.etsi.org/deliver/etsi_ts/136400_136499/136413/09.10.00_60/ts_136413v091000p.pdf">https://www.etsi.org/deliver/etsi_ts/136400_136499/136413/09.10.00_60/ts_136413v091000p.pdf</a></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, Jul 13, 2019 at 6:35 PM Romeu Medeiros <<a href="mailto:medeiros@medeiros.eng.br">medeiros@medeiros.eng.br</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Hello Sukchan and friends.<div><br></div><div>I'm trying to use the CSFB in test lab, and every time that nextepc send the UEContextModificationRequest, the UE respond with an UEContextModificationFaliure [ Protocol-cause=semantic-error ].</div><div><br></div><div><div><img src="cid:ii_jy21t1v40" alt="image.png" width="472" height="169"><br></div></div><div><br></div><div>I'm looking why I'm getting this. Someone have any idea?</div><div><br></div><div>Thanks</div><div><br></div><div>Romeu Medeiros</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Jul 11, 2019 at 12:15 PM Sukchan Lee <<a href="mailto:acetcom@gmail.com" target="_blank">acetcom@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div>Dear Osmocom & NextEPC Community,</div><div><br></div>Today I've added CS Fallback and released NextEPC v0.5.0<div><br></div><div>So, I'd just like to test this part with Osmocom project, but it seems to be a difficult task. The reason is why I have little knowledge about 2G/3G. Nevertheless, I will try to do it</div><div><br></div><div>BTW, I don't know if there is anyone who wants to integrate this big thing.</div><div>Even though I'm not sure if this will help, but let me introduce the configuration of the NextEPC.</div><div><br></div><div>To use SGsAP, change the mme.conf as follows:</div><div><br></div><div>#<br># <sgsap><br>#<br># o Single MSC/VLR<br># sgsap:<br># addr: 127.0.0.2<br># plmn_id:<br># mcc: 001<br># mnc: 01<br># tac: 4130<br># lac: 43690<br>#<br># o Multiple MSC/VLR<br># sgsap:<br># - addr: 127.0.0.2<br># plmn_id:<br># mcc: 001<br># mnc: 01<br># tac: 4131<br># lac: 43692<br># - addr<br># - 127.0.0.3<br># - fe80::2%lo0<br># plmn_id:<br># mcc: 001<br># mnc: 01<br># tac: 4132<br># lac: 43692<br># - name: <a href="http://msc.open5gs.org" target="_blank">msc.open5gs.org</a><br># plmn_id:<br># mcc: 001<br># mnc: 01<br># tac: 4133<br># lac: 43693<br>#<br></div><div><br></div><div>FYI, I also attach the pcap that I run with nextepc simulator as below.</div><div><br></div><div>$ ./tests/testcsfb<br>mo-idle-test : SUCCESS<br>mt-idle-test : SUCCESS<br>mo-active-test : SUCCESS<br>mt-active-test : SUCCESS<br>All tests passed.<br></div><div><br></div><div>Feel free to raise any questions about this things.</div><div><br></div><div>Best Regards,</div><div> Sukchan</div><div><br></div></div>
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