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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Dear all<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>We are facing the following problem and hope you can help us:<o:p></o:p></p><p class=MsoListParagraph style='margin-left:.25in;text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>We use OSMO as UMTS core emulation, working with our real NodeB<o:p></o:p></p><p class=MsoListParagraph style='margin-left:.25in;text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>During UE attach procedure we see from SGSN “Location Update Reject”<o:p></o:p></p><p class=MsoListParagraph style='margin-left:.25in'>and afterthat UE is released.<o:p></o:p></p><p class=MsoListParagraph style='margin-left:.25in;text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>We do the comparison test with real UMTS core and our real NodeB, here <o:p></o:p></p><p class=MsoListParagraph style='margin-left:.25in'>it works properly, UE can attach successful.<o:p></o:p></p><p class=MsoListParagraph style='margin-left:.25in'><o:p> </o:p></p><p class=MsoListParagraph style='margin-left:0in'>We assume there is some Osmo configuration problem but we have not <o:p></o:p></p><p class=MsoListParagraph style='margin-left:0in'>found the root cause, we very appreciate if you can take a look and give us some advice.<o:p></o:p></p><p class=MsoListParagraph style='margin-left:0in'><o:p> </o:p></p><p class=MsoListParagraph style='margin-left:0in'>Here is the current message flow of UE attach<o:p></o:p></p><p class=MsoListParagraph style='margin-left:0in'><o:p> </o:p></p><p class=MsoListParagraph> 10.2.9.200 10.2.9.139 RANAP 170 (RUA) InitialUE-Message (DTAP) (MM) Location Updating Request <o:p></o:p></p><p class=MsoListParagraph> 10.2.9.139 10.2.9.200 RANAP 158 SACK (RUA) DirectTransfer (DTAP) (MM) Authentication Request <o:p></o:p></p><p class=MsoListParagraph> 10.2.9.200 10.2.9.139 RANAP 222 SACK (RUA) InitialUE-Message (DTAP) (GMM) Attach Request <o:p></o:p></p><p class=MsoListParagraph> 10.2.9.139 10.2.9.200 RANAP 122 SACK (RUA) DirectTransfer (DTAP) (GMM) Identity Request <o:p></o:p></p><p class=MsoListParagraph> 10.2.9.200 10.2.9.139 RANAP 118 (RUA) DirectTransfer (DTAP) (MM) Authentication Failure <o:p></o:p></p><p class=MsoListParagraph> 10.2.9.139 10.2.9.200 RANAP 158 SACK (RUA) DirectTransfer (DTAP) (MM) Authentication Request <o:p></o:p></p><p class=MsoListParagraph> 10.2.9.200 10.2.9.139 RANAP 154 SACK (RUA) DirectTransfer (DTAP) (GMM) Identity Response <o:p></o:p></p><p class=MsoListParagraph> 10.2.9.139 10.2.9.200 RANAP 162 SACK (RUA) DirectTransfer (DTAP) (GMM) Authentication and Ciphering Req <o:p></o:p></p><p class=MsoListParagraph> 10.2.9.200 10.2.9.139 RANAP 110 (RUA) DirectTransfer (DTAP) (MM) Authentication Response <o:p></o:p></p><p class=MsoListParagraph> 10.2.9.139 10.2.9.200 RANAP 138 SACK (RUA) SecurityModeCommand <o:p></o:p></p><p class=MsoListParagraph> 10.2.9.200 10.2.9.139 RANAP 98 (RUA) SecurityModeComplete <o:p></o:p></p><p class=MsoListParagraph> 10.2.9.139 10.2.9.200 RANAP 122 SACK (RUA) CommonID <o:p></o:p></p><p class=MsoListParagraph> 10.2.9.200 10.2.9.139 RANAP 166 SACK (RUA) DirectTransfer (DTAP) (GMM) Authentication and Ciphering Resp <o:p></o:p></p><p class=MsoListParagraph> 10.2.9.139 10.2.9.200 RANAP 134 SACK (RUA) DirectTransfer (DTAP) (MM) Location Updating Accept <o:p></o:p></p><p class=MsoListParagraph> 10.2.9.139 10.2.9.200 RANAP 122 (RUA) SecurityModeCommand <o:p></o:p></p><p class=MsoListParagraph>--> 10.2.9.139 10.2.9.200 RANAP 106 (RUA) DirectTransfer (DTAP) (MM) Location Updating Reject <o:p></o:p></p><p class=MsoListParagraph> 10.2.9.139 10.2.9.200 RANAP 102 (RUA) Iu-ReleaseCommand <o:p></o:p></p><p class=MsoListParagraph> 10.2.9.200 10.2.9.139 RANAP 114 SACK (RUA) Iu-ReleaseComplete <o:p></o:p></p><p class=MsoListParagraph> 10.2.9.200 10.2.9.139 RANAP 102 (RUA) SecurityModeReject <o:p></o:p></p><p class=MsoListParagraph> 10.2.9.200 10.2.9.139 RANAP 102 (RUA) Iu-ReleaseRequest <o:p></o:p></p><p class=MsoListParagraph> 10.2.9.139 10.2.9.200 RANAP 118 SACK (RUA) Iu-ReleaseCommand <o:p></o:p></p><p class=MsoListParagraph style='margin-left:0in'> 10.2.9.200 10.2.9.139 RANAP 114 SACK (RUA) Iu-ReleaseComplete<o:p></o:p></p><p class=MsoListParagraph style='margin-left:0in'><o:p> </o:p></p><p class=MsoListParagraph style='margin-left:0in'>Thanks and regards<o:p></o:p></p><p class=MsoListParagraph style='margin-left:0in'>Tuan Lam<o:p></o:p></p></div></body></html>