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Alexander Chemeris alexander.chemeris at gmail.comgoto OsmoPCU mailing list? Sent from my Android device. -- Regards, Alexander Chemeris CEO, Fairwaves LLC http://fairwaves.ru 27.08.2012 18:07 пользователь "Don A. Bailey" < donb at capitolhillconsultants.com> написал: > All, > Apologies if this is the wrong mailing list for this question. If so, > please redirect me to the appropriate Osmocom list. Thanks! > > I'm having trouble with some older 2G cellular modules. When they initiate > GPRS, the GPRS Attach Accept response from the SGSN seems to be dropped on > the floor. I thought this was because the inbound TLLI generated by the ME > was not included in the subsequent response. However, I verified that the > LLC correctly generates the response and attaches the TLLI. I'm not quite > sure why these particular 2G modules are not receiving the response as the > message seems to be correctly submitted from the SGSN to the BTS. > > The result is that the GPRS state will get "stuck" on the ME side, which > will keep attempting to Attach until it gives up and issues a Detach > message (under the same TLLI). > > Can anyone clue me in on what potential issues may be caused by this ME > and how/if I can patch this problem in the SGSN? > > Thank you, > D > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.osmocom.org/pipermail/openbsc/attachments/20120827/02f2fb3c/attachment.htm>