Installation Requirements OpenBTS compiles to a simple Unix binary and does not require special installation. One some systems (Ubuntu), you will need to define LIBS = -lpthread prior to running configure. To run OpenBTS, the following should be installed: Asterisk (http://www.asterisk.org), running SIP on port 5060. libosip (http://www.gnu.org/software/osip/) libusrp (http://gnuradio.org). This is part of the GNURadio installation. It is the only part used by OpenBTS. For information on specific executables, see tests/README.tests and apps/README.apps. See http://gnuradio.org/trac/wiki/OpenBTS/BuildingAndRunning for more information.