25 Aug
2013
25 Aug
'13
12:51 p.m.
Hi 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