This is merely a historical archive of years 2008-2021, before the migration to mailman3.
A maintained and still updated list archive can be found at https://lists.osmocom.org/hyperkitty/list/OpenBSC@lists.osmocom.org/.
Nordin bouchtaoui at gmail.com> It would be great if someone with an OpenBTS system could turn on > debugging messages and capture the raw bits from our system > information messages 1-4 and send them to you for you to try in your > OpenBSC build. Well, I already did that by using some traces I found in http://wiki.thc.org/. There I copied some values for GPRS support and changed that in OpenBSC source. Also added the missing SI 13 to the source, which contains some more info about the GPRS, but without success. > I looked at the BCCH messages in OpenBSC yesterday, but could not > identify the problem. I don't know how OpenBSC handles the "rest > octets" at the ends of these messages, but it is important that these > be properly padded with the GSM filler pattern if you are not coding > anything there. This is especially important for high-feature phones > that might actually be looking for GPRS parameters. It is also > important to present the BCCH messages in the correct sequence and > with the timing given in GSM 05.02 6.3.1.3, but I suspect your BTS > takes care of that for you. In OpenBSC (I have older version, didn't do any updates yet) There are SI 1 to 4 that are filled and the Rest Octets (in SI 3 and SI 4) are filled with 0x2B, which the MS should ignore and thus it also indicates no GPRS support. > I agree with your analysis. If the handset actually sees the network, > then you do not have a frequency offset problem. Therefore, if you do > not see channel requests coming from the phone via the BTS the most > likely explanation is that the phone has found some inconsistency in > the BCCH. Exactly, that's my assumption too. But as my collegue once said "Assumption is the mother of all f at ck" from a movie scene of Steven Seagal's film Under Siege 2. The fact is, it should/must work with BTSs without GPRS, so I think some important basic information on the BCCH is not complete and thus maybe corrupt in a certain way. Cause the same problem also occurs with the BS11 BTS according to other guys in the list. So I'll concentrate more on the BCCH and try to understand it carefully. > Sorry. It's joking response: If I see you coming, I will hide. Just > a joke, though. No need for appolagize, I like jokes too :p It's funny we laugh about jokes. Actually, we should always laugh and laugh harder when we hear a joke. The world would be so beautiful than. Greetings, Laughing Nordin.