I know the tutorial. I made some corrections, too... :D Unfortunately, I couldn't get my Ubuntu Hardy working with mISDN loop without any ISDN card...

you should load mISDN like this:

modprobe mISDN_core modprobe mISDN_dsp modprobe mISDN_l1loop pri=1

misdn_info

Found 2 ports Port 0 'mISDN_l1loop.1': TE/NT-mode PRI E1 (for phone lines & E1 devices) 2 B-channels: 1-2 B-protocols: RAW HDLC X75slp L2:DSP L2:DSPHDLC -------- Port 1 'mISDN_l1loop.2': TE/NT-mode PRI E1 (for phone lines & E1 devices) 2 B-channels: 1-2 B-protocols: RAW HDLC X75slp L2:DSP L2:DSPHDLC

if you use the latest lcr and openbsc git, you should have two processes that communicate via socket interface, rather than compiling them together.