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Harald Welte laforge at gnumonks.orgHi again, On Sun, May 02, 2010 at 11:19:11PM +0200, Harald Welte wrote: > As a result, GPRS ATTACH and RA UPDATE are working again, like they did > months ago. > > I'm now still stuck somewhere in PDP context activation, and am confident > that this will be solved tomorrow. After that point, the actual data plane > can be worked on, i.e. flow control and fragmentation, as well as somehow > actually routing IP packets into the LLC connection. PDP context activation is now successful, and I get to the point where I see IP-packets from the mobile phone inside the SNDCP/LLC/BSSGP/NS protocol stack. What now needs to be done is to implement a working SNDCP layer, starting with simple fragmentation support and none of the compression options. For anyone who wants to try: There is not much that needs to be configured, I've attached two reference config files for openbsc and osmo_sgsn to this message. The only important part is to set the UDP port numbers in openbsc and osmo_sgsn to the same value. Simply check out the gprs-sgsn branch and start opensc and osmo_sgsn. I am going to leave the SGSN at this state for now and work on other tasks again (like the Gb proxy, OsmocomBB layer1, ...). However, I expect to get back to continuing the SGSN work during the weeks to come. Happy hacking, Harald -- - Harald Welte <laforge at gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6) -------------- next part -------------- ! ! OpenBSC configuration saved from vty ! ! password foo ! line vty no login ! network network country code 1 mobile network code 1 short name OpenBSC long name OpenBSC auth policy closed location updating reject cause 13 encryption a5 0 neci 0 rrlp mode none mm info 0 handover 0 handover window rxlev averaging 10 handover window rxqual averaging 1 handover window rxlev neighbor averaging 10 handover power budget interval 6 handover power budget hysteresis 3 handover maximum distance 9999 timer t3101 10 timer t3103 0 timer t3105 0 timer t3107 0 timer t3109 0 timer t3111 0 timer t3113 60 timer t3115 0 timer t3117 0 timer t3119 0 timer t3141 0 bts 0 type nanobts band DCS1800 cell_identity 0 location_area_code 1 training_sequence_code 7 base_station_id_code 63 ms max power 15 cell reselection hysteresis 4 rxlev access min 0 channel allocator ascending rach tx integer 9 rach max transmission 7 ip.access unit_id 1800 0 oml ip.access stream_id 255 gprs mode egprs gprs routing area 1 gprs cell bvci 2 gprs nsei 2 gprs nsvc 0 nsvci 2 gprs nsvc 0 local udp port 23000 gprs nsvc 0 remote udp port 23000 gprs nsvc 0 remote ip 192.168.100.11 gprs nsvc 1 nsvci 0 gprs nsvc 1 local udp port 0 gprs nsvc 1 remote udp port 0 gprs nsvc 1 remote ip 0.0.0.0 trx 0 rf_locked 0 arfcn 871 nominal power 23 max_power_red 0 rsl e1 tei 0 timeslot 0 phys_chan_config CCCH+SDCCH4 timeslot 1 phys_chan_config SDCCH8 timeslot 2 phys_chan_config TCH/F timeslot 3 phys_chan_config TCH/F timeslot 4 phys_chan_config TCH/F timeslot 5 phys_chan_config TCH/F timeslot 6 phys_chan_config TCH/F timeslot 7 phys_chan_config PDCH -------------- next part -------------- ! ! OpenBSC configuration saved from vty ! ! ! line vty no login ! sgsn nsip local port 23000