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This is a brief installation guide for openBSC and LCR on Ubuntu 12.04 32Bit.

sudo apt-get install linux-source build-essential autoconf automake libtool libgsm1-dev libdbi-dev \
     libdbd-sqlite3 git-core asterisk asterisk-dev ncurses-base libncurses5-dev libncursesw5-dev \
     sqlite3 pkg-config libortp-dev
cd /usr/src
sudo tar xfj linux-source-3.2.0.tar.bz2

cd /lib/modules/3.2.0-23-generic-pae/
sudo ln -s /usr/src/linux-source-3.2.0 source

cd
mkdir GSM
cd GSM

• Download Sources

from git available at http://git.misdn.org/

misdn.org URLs Respository have following format:

git://git.misdn.org/git-name.git/

Following command can be used for source downloading

git clone git://git.misdn.org/git-name.git/

Source form gits listed below needs to be downloaded

• mISDN.git
• mISDNuser.git
• lcr.git

Then download, build and install sources as described in Build from source

• libosmocore
• libosmo-abis
• openbsc

Note: Do not execute make install at this point for openbsc

cd mISDN
wget http://openbsc.osmocom.org/trac/raw-attachment/wiki/OpenBSC_LCR_Ubuntu12.04/mISDN.diff
patch -p1 < mISDN.diff
./configure
cp mISDN.cfg.default standalone/mISDN.cfg
make modules
sudo make modules_install

cd ../mISDNuser
./configure
make
sudo make install

cd ../../lcr
ln -s ../libosmocore/ .
ln -s ../openbsc/openbsc/ .
sh autogen.sh
./configure --prefix=/opt/lcr --with-asterisk --with-gsm-bs
make
sudo make install
sudo cp chan_lcr.so /usr/lib/asterisk/modules/

sudo ldconfig
sudo depmod -a