OpenBSC January 2021

openbsc@lists.osmocom.org

7 participants
14 discussions

OsmoHNBGW M3UA IPSP mode
by Mirko Kovacevic 28 Jan '21

28 Jan '21

Hello, not many discussions found on OsmoHNBGW topic. 1. Can we connect O' HNBGW directly to SGSN without STP (IPSP mode)? 2. If not, I am wondering do OSMOCOM have development support for IPSP M3UA mode in SIGTRAN development files or elsewhere? Thank you in advance, and keep shaking mobile development world. Mirko K.

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SMPP Alert Notifications
by Keith 14 Jan '21

14 Jan '21

Hi Osmocom Community. I'd like to extend the SMPP protocol alert notifications to be able to differentiate between IMSI_ATTACH, NORMAL and PERIODIC LURs The reason is to be able to react to an initial attach by sending a "Welcome" SMS. SMPP specifies only three status possibilities: 0 = Available 1 = Disabled 2 = Not Available (Detaching) I've added 3 for IMSI_ATTACH - Actually I ended up using != PERIODIC because not all phones send an ATTACH after a DETACH, some send NORMAL LUR. With this the ESME can respond to an alert notification that has status 3 by looking up the IMSI to see if it's known/autorised etc (this is outside of osmo-hlr in my use case, although I guess it could also be done by checking what the HLR says inside the MSC) Anyway.. I'm wondering if anybody else ever did this, and do we want/accept this functionality in master osmo-msc? Or.. any better ideas on how to do it? Thanks k/

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OsmoBSC - SCCP Connection to Nokia MSC
by Sonny Lafuente 06 Jan '21

06 Jan '21

Hi Community, Happy New Year! Would like to ask if anyone here have experience integrating OsmoBSC to Nokia MSC? Currently we are doing the integration in Nokia MSC and we encountered issue. Basically, in the SCCP part, the BSC is trying to send UDT (BSSAP) Reset but no response from the MSC. After the default timer of the RESET, we observed a SACK SST and SACK UDTS. In the SACK SST, we saw the trace that there is no Calling indicator which is my BSC point code. When checking the trace we saw this Affected Subsystem Number: 254. I’ve red some documentations in OSMO but I don’t find any SCCP management configuration in OSMO so I think this one is on MSC side. Below is the Trace we captured. BSC Point code - 2262 Nokia Point code - 7039 Regards, Sonny

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set a c/c++ standard for all osmocom core network projects
by Alexander 'lynxis' Couzens 02 Jan '21

02 Jan '21

Hi, I would like to start a discussion to set for all osmocom core network projects a language standard (could be also set for other osmocom projects). The current state is the code is compiled with the compilers choice of c/c++. This produce unexpected build failures on newer or older system. I would like to start setting it to c11/c++11 + gnu extensions. This is a more random choice of standard. I would argue to have at least c99 for c. Any feedback? Best, lynxis -- Alexander Couzens mail: lynxis(a)fe80.eu jabber: lynxis(a)fe80.eu gpg: 390D CF78 8BF9 AA50 4F8F F1E2 C29E 9DA6 A0DF 8604

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OpenBSC January 2021