Thank you andreas for your reply.

I applied the patch and I can see the IMM ASS messages

1.

eg : On the PCU log

receiving IMM.ASS confirm from BTS: 2d 06 3f 10 0e 43 6c 7b 19 ce 00 00 c8 00 10 0b 2b 2b 2b 2b 2b 2b 2b 

2. Branches

PCU -> master

bts   -> gprs-work

os_BB -> sylvain/testing

openbsc -> master

3.

I have attached Openbts.db and osmo-sgsn.cfg

I have checked for openbsc.cfg in the openbsc folder. but I find a diiferent openbsc.cfg for different type of bts (nanobts,bs11, etc) but not for openbts. I am not sure which one to attach. 

When you mean by configs of openbsc. Is it the osmo-sgsn.cfg or openbsc.cfg.? Can you please tell me which one is the correct cfg when using openbts.

regards,

Altaf

On Tue, Jun 4, 2013 at 12:56 PM, jolly <andreas@eversberg.eu> wrote:

altaf sk wrote:

<0002> gprs_rlcmac_data.cpp:1901 Got IMM.ASS confirm, but rest octets   

            do not start with bit sequence 'HH01' (Packet DownlinkAssignment)

hi atlaf,

please try this patch. it will show what is sent to bts and what is received as confirm from bts. what branches do you use (pcu, bts, osmocombb) ? could you attach the configs for bts and openbsc?

regards,

andreas