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Dmitri Soloviev dmi3sol at gmail.comHi list, Peter, thank you for your reply. I still have questions about media control: 1) when parsing MGCP CRCX, sdp is not expected. May I change it? 2) I still can't run media in BSC mode. Seems I'm missing something. osmo-bsc and osmo-bsc_mgcp are running BSSAP works perfectly But it seems two interfaces are working completely independent: -- MGCP between MSC and BSC -- interface between BSC and BTS (ip.access): at MGCP, connection is acknowledged, endpoint is allocated (at BSC ip=192.168.1.11) at ip.access interface between BSC and BTS, BTS replies to ip.accessCRCX with proper acknowledgement with proper ip:port at BTS (192.168.1.9) , then BSC issues ip.accessMDCX with endpoint ip zero: 7e:73:01:09:f8:00:2d:*f0:00:00:00:00*:f1:0f:be:f4:00:f2:03 My attempts to modify connection at MGCP interface has no impact on ip.access interface The key question, I'm not getting how osmo-bsc and osmo0bsc_mgcp are interacting. Thank you, Dmitri PS my configs are mgcp local ip 192.168.1.11 bts ip 192.168.1.9 bind ip 192.168.1.11 bind port 2427 rtp base 6000 sdp audio payload number 3 sdp audio payload name GSM/8000 number endpoints 31 and e1_input e1_line 0 driver ipa network network country code 250 mobile network code 07 short name OsmoBSC long name OsmoBSC auth policy closed location updating reject cause 13 ! encryption a5 1 neci 1 paging any use tch 0 rrlp mode none mm info 1 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 t3122 0 timer t3141 0 dtx-used 0 subscriber-keep-in-ram 0 bts 0 type nanobts band PCS1900 cell_identity 2611 location_area_code 51601 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 1801 0 oml ip.access stream_id 255 line 0 neighbor-list mode manual-si5 gprs mode none trx 0 rf_locked 0 arfcn 810 nominal power 0 max_power_red 20 rsl e1 tei 0 timeslot 0 phys_chan_config CCCH+SDCCH4 hopping enabled 0 timeslot 1 phys_chan_config TCH/F hopping enabled 0 timeslot 2 phys_chan_config TCH/F hopping enabled 0 timeslot 3 phys_chan_config TCH/F hopping enabled 0 timeslot 4 phys_chan_config TCH/F hopping enabled 0 timeslot 5 phys_chan_config TCH/F hopping enabled 0 timeslot 6 phys_chan_config TCH/F hopping enabled 0 timeslot 7 phys_chan_config TCH/F hopping enabled 0 msc ! ip.access rtp-base 6000 timeout-ping 20 timeout-pong 5 dest 192.168.50.10 5000 0 in fact, BSSAP goes from a card over VPN, while MGCP comes from self-written TRAU running locally, the same host as BSC -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.osmocom.org/pipermail/openbsc/attachments/20130825/aceab817/attachment.htm>