9 May
2014
9 May
'14
3:38 p.m.
Hi Gurus
I am using OpenBSC/GPRS with nanoBTS. Thanks everybody for the great work.
GPRS works well with many cell phone, but for particular cell phone its not
working.
I saw Olaf Schulz posting (subject: GPRS problems with Nokia Handsets dated
4th May 2012). Saw his pcap file and mine is similar too.
Frank Mass suggested a patch to overcome this problem in his posting
(subject gprs_llc.c foreighn TLLI is stored but not searched, dated 30
April 2012). I have implemented that patch but still not working.
Can any body suggest something.
Please find the osmo-sgsn trace
<0011> gprs_bssgp.c:376 BSSGP TLLI=0xabfafd41 Rx UPLINK-UNITDATA
<0012> gprs_llc.c:551 LLC SAPI=1 C FCS=0x76d7d9CMD=UI DATA
<0012> gprs_llc.c:95 TLLI 0xabfafd41 is foreign, converting to local TLLI
0xebfafd41
<0012> gprs_llc.c:245 LLC RX: unknown TLLI 0xabfafd41, creating LLME on the
fly
<0011> gprs_bssgp.c:753 BSSGP BVCI=2 Rx Flow Control BVC
<0011> gprs_bssgp.c:376 BSSGP TLLI=0xabfafd41 Rx UPLINK-UNITDATA
<0012> gprs_llc.c:551 LLC SAPI=1 R FCS=0x57768eCMD=XID DATA
<0011> gprs_bssgp.c:376 BSSGP TLLI=0xabfafd41 Rx UPLINK-UNITDATA
<0012> gprs_llc.c:551 LLC SAPI=1 C FCS=0x9ab10aCMD=UI DATA
<0012> gprs_llc.c:598 TLLI=abfafd41 dropping UI, N(U=0) not in window
V(URV(UR:3).
<0011> gprs_bssgp.c:753 BSSGP BVCI=2 Rx Flow Control BVC
<0011> gprs_bssgp.c:753 BSSGP BVCI=2 Rx Flow Control BVC
<0011> gprs_bssgp.c:376 BSSGP TLLI=0x7d3b00c1 Rx UPLINK-UNITDATA
<0012> gprs_llc.c:551 LLC SAPI=1 C FCS=0xfd5011CMD=UI DATA
<0012> gprs_llc.c:245 LLC RX: unknown TLLI 0x7d3b00c1, creating LLME on the
fly
<0011> gprs_bssgp.c:753 BSSGP BVCI=2 Rx Flow Control BVC
<0011> gprs_bssgp.c:376 BSSGP TLLI=0x7d3b00c1 Rx UPLINK-UNITDATA
<0012> gprs_llc.c:551 LLC SAPI=1 C FCS=0x11fb2fCMD=UI DATA
<0011> gprs_bssgp.c:376 BSSGP TLLI=0x7d3b00c1 Rx UPLINK-UNITDATA
<0012> gprs_llc.c:551 LLC SAPI=1 C FCS=0xea1c55CMD=UI DATA
<0011> gprs_bssgp.c:753 BSSGP BVCI=2 Rx Flow Control BVC
<0011> gprs_bssgp.c:753 BSSGP BVCI=2 Rx Flow Control BVC
<0011> gprs_bssgp.c:376 BSSGP TLLI=0xe23c0990 Rx UPLINK-UNITDATA
<0012> gprs_llc.c:551 LLC SAPI=1 C FCS=0x2a6a81CMD=UI DATA
<000f> sgsn_libgtp.c:126 Create PDP Context
<000f> sgsn_libgtp.c:379 libgtp cb_conf(type=16, cause=128,
pdp=0x7feafc152320, cbp=0x6bcf50)
<000f> sgsn_libgtp.c:265 Received CREATE PDP CTX CONF, cause=128(Request
accepted)
<0013> gprs_sndcp.c:297 SNSM-ACTIVATE.ind (lle=0x6bbe60 TLLI=e23c0990,
SAPI=3, NSAPI=5)
<0011> gprs_bssgp.c:753 BSSGP BVCI=2 Rx Flow Control BVC
<0011> gprs_bssgp.c:753 BSSGP BVCI=2 Rx Flow Control BVC
<0011> gprs_bssgp.c:753 BSSGP BVCI=2 Rx Flow Control BVC
<0011> gprs_bssgp.c:376 BSSGP TLLI=0xe23c0990 Rx UPLINK-UNITDATA
<0012> gprs_llc.c:551 LLC SAPI=1 C FCS=0x819789CMD=UI DATA
<000f> sgsn_libgtp.c:212 Delete PDP Context
<000f> sgsn_libgtp.c:402 PDP Context was deleted
<000f> sgsn_libgtp.c:379 libgtp cb_conf(type=20, cause=128, pdp=(nil),
cbp=0x6bcf50)
<000f> sgsn_libgtp.c:321 Received DELETE PDP CTX CONF, cause=128(Request
accepted)
<0013> gprs_sndcp.c:320 SNSM-DEACTIVATE.ind (lle=0x6bbe60, TLLI=e23c0990,
SAPI=3, NSAPI=5)
John