Hi all, I want to build the freeswitch(v1.4.18) supported MFC-R2, And try to download the openr2-1.3.3.tar.gz. # tar zxvf openr2-1.3.3.tar.gz # cd openr2-1.3.3 # ./configure --prefix=/usr # make && make install # ldconfig After I configure freeswitch with command: ./configure --with-libpri --enable-debug I can find the message below: <<>> Modules and optional features checking for openr2_context_set_io_type in -lopenr2... no checking whether to build ftmod_r2... no checking for wat_version in -lwat... no checking whether to build ftmod_wat... no <<>> Digium libpri checking whether libpri is usable... yes checking whether libpri is too old... no checking whether libpri has BRI support... yes checking whether libpri has AOC event support... yes checking whether libpri has pri_maintenance_service()... yes <<>> Sangoma Wanpipe checking for sangoma_span_chan_toif in -lsangoma... no checking whether to build ftmod_wanpipe... no <<>> Sangoma ISDN stack checking for sng_isdn_init in -lsng_isdn... no checking whether to build ftmod_sangoma_isdn... no <<>> Sangoma SS7 stack checking for sng_isup_init_gen in -lsng_ss7... no checking whether to build ftmod_sangoma_ss7... no <<>> zlib checking for compress in -lz... yes checking whether zlib is installed... yes <<>> ftmod_misdn (Linux mISDN I/O plugin) checking for mISDN/mISDNif.h... no configure: mISDN/mISDNif.h not found <<>> Creating output files configure: creating ./config.status config.status: creating Makefile config.status: creating freetdm.pc config.status: creating mod_freetdm/Makefile config.status: executing depfiles commands config.status: executing libtool commands ============================ FreeTDM configuration ============================ + Modules Signalling: ftmod_analog....................... yes ftmod_analog_em.................... yes ftmod_isdn......................... no ftmod_libpri....................... yes ftmod_sangoma_isdn................. no ftmod_sangoma_ss7.................. no ftmod_r2........................... no ftmod_gsm.......................... no ftmod_pritap....................... no I/O: ftmod_zt........................... yes ftmod_wanpipe...................... no ftmod_misdn........................ no =============================================================================== In another word, is openr2 is not supported the freeswitch? After reading the README file, I found I should use openr2 2.X for freeswitch. But where to get the openr2 2.X ? -- Best Regards Charles