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Running osmo-trx-uhd stalls at trying to detect UHD device

by Keith E. Fleming

Greetings! I have been trying to get osmo-trx-uhd to work with my Ettus B200. Where it gets stuck is: ┌──(root💀kali)-[~/osmo/src/osmo-trx]└─# osmo-trx-uhd -C ./doc/examples/osmo-trx-uhd/osmo-trx-uhd.cfgTue Mar 28 12:39:48 2023 DLGLOBAL <0008> cpu_sched_vty.c:471 Setting SCHED_RR priority 18Tue Mar 28 12:39:48 2023 DLGLOBAL <0008> telnet_interface.c:88 Available via telnet 127.0.0.1 4237Tue Mar 28 12:39:48 2023 DLCTRL <000f> control_if.c:1014 CTRL at 127.0.0.1 4236[INFO] [UHD] linux; GNU C++ version 12.2.0; Boost_107400; UHD_4.3.0.0+ds1-4+b2Tue Mar 28 12:40:06 2023 DMAIN <0000> osmo-trx.cpp:607 -- Transceiver active with 1 channel(s)Tue Mar 28 12:40:06 2023 DLSTATS <0011> stats.c:169 Stats timer expire_count=4: We missed 3 timersTue Mar 28 12:40:06 2023 DLGLOBAL <0008> rate_ctr.c:350 Stats timer expire_count=17: We missed 16 timers That line in red, above, should be followed by: [INFO] [B200] Detected Device: B200[INFO] [B200] Operating over USB 3.[INFO] [B200] Initialize CODEC control...[INFO] [B200] Initialize Radio control......................etc.. The B200 is plugged in, uhd_find_devices and uhd_usrp_probe discover it without problems. Also, I am able to bring up srsRAN's EnodeB software using it for 4G/LTE testing. What follows is a log of ./configure --with-uhdmake -j4make checkmake install any help appreciated!-KEF ┌──(root💀kali)-[~/osmo/src/osmo-trx]└─# ./configure --with-uhdchecking build system type... x86_64-pc-linux-gnuchecking host system type... x86_64-pc-linux-gnuchecking target system type... x86_64-pc-linux-gnuchecking for a BSD-compatible install... /usr/bin/install -cchecking whether build environment is sane... yeschecking for a race-free mkdir -p... /usr/bin/mkdir -pchecking for gawk... gawkchecking whether make sets $(MAKE)... yeschecking whether make supports nested variables... yeschecking whether make supports nested variables... (cached) yeschecking whether make supports the include directive... yes (GNU style)checking for gcc... gccchecking whether the C compiler works... yeschecking for C compiler default output file name... a.outchecking for suffix of executables...checking whether we are cross compiling... nochecking for suffix of object files... ochecking whether the compiler supports GNU C... yeschecking whether gcc accepts -g... yeschecking for gcc option to enable C11 features... none neededchecking whether gcc understands -c and -o together... yeschecking dependency style of gcc... gcc3checking dependency style of gcc... gcc3checking for gcc... (cached) gccchecking whether the compiler supports GNU C... (cached) yeschecking whether gcc accepts -g... (cached) yeschecking for gcc option to enable C11 features... (cached) none neededchecking whether gcc understands -c and -o together... (cached) yeschecking dependency style of gcc... (cached) gcc3checking for g++... g++checking whether the compiler supports GNU C++... yeschecking whether g++ accepts -g... yeschecking for g++ option to enable C++11 features... none neededchecking dependency style of g++... gcc3checking whether g++ supports C++11 features by default... yeschecking whether ln -s works... yeschecking whether make sets $(MAKE)... (cached) yeschecking for rm... /usr/bin/rmchecking for pkg-config... /usr/bin/pkg-configchecking for pkg-config... /usr/bin/pkg-configchecking pkg-config is at least version 0.20... yeschecking how to print strings... printfchecking for a sed that does not truncate output... /usr/bin/sedchecking for grep that handles long lines and -e... /usr/bin/grepchecking for egrep... /usr/bin/grep -Echecking for fgrep... /usr/bin/grep -Fchecking for ld used by gcc... /usr/bin/ldchecking if the linker (/usr/bin/ld) is GNU ld... yeschecking for BSD- or MS-compatible name lister (nm)... /usr/bin/nm -Bchecking the name lister (/usr/bin/nm -B) interface... BSD nmchecking the maximum length of command line arguments... 1572864checking how to convert x86_64-pc-linux-gnu file names to x86_64-pc-linux-gnu format... func_convert_file_noopchecking how to convert x86_64-pc-linux-gnu file names to toolchain format... func_convert_file_noopchecking for /usr/bin/ld option to reload object files... -rchecking for file... filechecking for objdump... objdumpchecking how to recognize dependent libraries... pass_allchecking for dlltool... dlltoolchecking how to associate runtime and link libraries... printf %s\nchecking for ar... archecking for archiver @FILE support... @checking for strip... stripchecking for ranlib... ranlibchecking command to parse /usr/bin/nm -B output from gcc object... okchecking for sysroot... nochecking for a working dd... /usr/bin/ddchecking how to truncate binary pipes... /usr/bin/dd bs=4096 count=1checking for mt... mtchecking if mt is a manifest tool... nochecking for stdio.h... yeschecking for stdlib.h... yeschecking for string.h... yeschecking for inttypes.h... yeschecking for stdint.h... yeschecking for strings.h... yeschecking for sys/stat.h... yeschecking for sys/types.h... yeschecking for unistd.h... yeschecking for dlfcn.h... yeschecking for objdir... .libschecking if gcc supports -fno-rtti -fno-exceptions... nochecking for gcc option to produce PIC... -fPIC -DPICchecking if gcc PIC flag -fPIC -DPIC works... yeschecking if gcc static flag -static works... yeschecking if gcc supports -c -o file.o... yeschecking if gcc supports -c -o file.o... (cached) yeschecking whether the gcc linker (/usr/bin/ld -m elf_x86_64) supports shared libraries... yeschecking whether -lc should be explicitly linked in... nochecking dynamic linker characteristics... GNU/Linux ld.sochecking how to hardcode library paths into programs... immediatechecking whether stripping libraries is possible... yeschecking if libtool supports shared libraries... yeschecking whether to build shared libraries... yeschecking whether to build static libraries... nochecking how to run the C++ preprocessor... g++ -Echecking for ld used by g++... /usr/bin/ld -m elf_x86_64checking if the linker (/usr/bin/ld -m elf_x86_64) is GNU ld... yeschecking whether the g++ linker (/usr/bin/ld -m elf_x86_64) supports shared libraries... yeschecking for g++ option to produce PIC... -fPIC -DPICchecking if g++ PIC flag -fPIC -DPIC works... yeschecking if g++ static flag -static works... yeschecking if g++ supports -c -o file.o... yeschecking if g++ supports -c -o file.o... (cached) yeschecking whether the g++ linker (/usr/bin/ld -m elf_x86_64) supports shared libraries... yeschecking dynamic linker characteristics... (cached) GNU/Linux ld.sochecking how to hardcode library paths into programs... immediatechecking for egrep... (cached) /usr/bin/grep -Echecking for byteswap.h... yeschecking for an ANSI C-conforming const... yeschecking for inline... inlinechecking for size_t... yeschecking for sys/time.h... yeschecking whether byte ordering is bigendian... nochecking for libosmocore >= 1.8.0... yeschecking for libosmovty >= 1.8.0... yeschecking for libosmoctrl >= 1.8.0... yeschecking for libosmocoding >= 1.8.0... yeschecking for uhd >= 003.011... yeschecking for uhd < 004.002... nochecking whether to enable building MS TRX... nochecking whether C++ compiler accepts -msse3... yeschecking whether C++ compiler accepts -msse4.1... yeschecking whether gcc has __builtin_cpu_supports built-in... yeschecking whether gcc has __sync_fetch_and_and built-in... yeschecking whether gcc has __sync_or_and_fetch built-in... yeschecking for libusb-1.0... yeschecking for fftw3f... yesCPPFLAGS=""CFLAGS=" -std=gnu11"CXXFLAGS="-g -O2"LDFLAGS=""checking that generated files are newer than configure... doneconfigure: creating ./config.statusconfig.status: creating Makefileconfig.status: creating CommonLibs/Makefileconfig.status: creating GSM/Makefileconfig.status: creating Transceiver52M/Makefileconfig.status: creating Transceiver52M/arch/Makefileconfig.status: creating Transceiver52M/arch/common/Makefileconfig.status: creating Transceiver52M/arch/arm/Makefileconfig.status: creating Transceiver52M/arch/x86/Makefileconfig.status: creating Transceiver52M/device/Makefileconfig.status: creating Transceiver52M/device/common/Makefileconfig.status: creating Transceiver52M/device/uhd/Makefileconfig.status: creating Transceiver52M/device/usrp1/Makefileconfig.status: creating Transceiver52M/device/lms/Makefileconfig.status: creating Transceiver52M/device/ipc/Makefileconfig.status: creating Transceiver52M/device/bladerf/Makefileconfig.status: creating tests/Makefileconfig.status: creating tests/CommonLibs/Makefileconfig.status: creating tests/Transceiver52M/Makefileconfig.status: creating utils/Makefileconfig.status: creating doc/Makefileconfig.status: creating doc/examples/Makefileconfig.status: creating contrib/Makefileconfig.status: creating contrib/systemd/Makefileconfig.status: creating doc/manuals/Makefileconfig.status: creating contrib/osmo-trx.specconfig.status: creating config.hconfig.status: config.h is unchangedconfig.status: executing tests/atconfig commandsconfig.status: executing depfiles commandsconfig.status: executing libtool commands ┌──(root💀kali)-[~/osmo/src/osmo-trx]└─# make -j4make all-recursivemake[1]: Entering directory '/root/osmo/src/osmo-trx'Making all in CommonLibsmake[2]: Entering directory '/root/osmo/src/osmo-trx/CommonLibs' CXX LinkedLists.lo CXX BitVector.lo CXX Threads.lo CXX Timeval.lo CXX Logger.lo CXX Utils.lo CXX trx_rate_ctr.lo CC trx_vty.lo CC debug.lo CXXLD libcommon.lamake[2]: Leaving directory '/root/osmo/src/osmo-trx/CommonLibs'Making all in GSMmake[2]: Entering directory '/root/osmo/src/osmo-trx/GSM' CXX GSMCommon.lo CXXLD libGSM.lamake[2]: Leaving directory '/root/osmo/src/osmo-trx/GSM'Making all in Transceiver52Mmake[2]: Entering directory '/root/osmo/src/osmo-trx/Transceiver52M'Making all in archmake[3]: Entering directory '/root/osmo/src/osmo-trx/Transceiver52M/arch'Making all in commonmake[4]: Entering directory '/root/osmo/src/osmo-trx/Transceiver52M/arch/common' CC convert_base.lo CC convolve_base.lo CC fft.lo CCLD libarch_common.lamake[4]: Leaving directory '/root/osmo/src/osmo-trx/Transceiver52M/arch/common'Making all in x86make[4]: Entering directory '/root/osmo/src/osmo-trx/Transceiver52M/arch/x86' CC convolve.lo CC convert.lo CC libarch_sse_3_la-convert_sse_3.lo CC libarch_sse_3_la-convolve_sse_3.lo CC libarch_sse_4_1_la-convert_sse_4_1.lo CCLD libarch_sse_3.la CCLD libarch_sse_4_1.la CCLD libarch.lamake[4]: Leaving directory '/root/osmo/src/osmo-trx/Transceiver52M/arch/x86'make[4]: Entering directory '/root/osmo/src/osmo-trx/Transceiver52M/arch'make[4]: Nothing to be done for 'all-am'.make[4]: Leaving directory '/root/osmo/src/osmo-trx/Transceiver52M/arch'make[3]: Leaving directory '/root/osmo/src/osmo-trx/Transceiver52M/arch'Making all in devicemake[3]: Entering directory '/root/osmo/src/osmo-trx/Transceiver52M/device'Making all in commonmake[4]: Entering directory '/root/osmo/src/osmo-trx/Transceiver52M/device/common' CXX smpl_buf.lo CXXLD libdevice_common.lamake[4]: Leaving directory '/root/osmo/src/osmo-trx/Transceiver52M/device/common'Making all in uhdmake[4]: Entering directory '/root/osmo/src/osmo-trx/Transceiver52M/device/uhd' CXX UHDDevice.lo CXXLD libdevice.lamake[4]: Leaving directory '/root/osmo/src/osmo-trx/Transceiver52M/device/uhd'make[4]: Entering directory '/root/osmo/src/osmo-trx/Transceiver52M/device'make[4]: Nothing to be done for 'all-am'.make[4]: Leaving directory '/root/osmo/src/osmo-trx/Transceiver52M/device'make[3]: Leaving directory '/root/osmo/src/osmo-trx/Transceiver52M/device'make[3]: Entering directory '/root/osmo/src/osmo-trx/Transceiver52M' CXX osmo_trx_uhd-osmo-trx.o CXX radioInterface.lo CXX radioVector.lo CXX radioClock.lo CXX radioBuffer.lo CXX sigProcLib.lo CXX signalVector.lo CXX Transceiver.lo CXX ChannelizerBase.lo CXX Channelizer.lo CXX Synthesis.lo CC proto_trxd.lo CXX Resampler.lo CXX radioInterfaceResamp.lo CXX radioInterfaceMulti.lo CXXLD libtransceiver_common.la CXXLD osmo-trx-uhdmake[3]: Leaving directory '/root/osmo/src/osmo-trx/Transceiver52M'make[2]: Leaving directory '/root/osmo/src/osmo-trx/Transceiver52M'Making all in contribmake[2]: Entering directory '/root/osmo/src/osmo-trx/contrib'Making all in systemdmake[3]: Entering directory '/root/osmo/src/osmo-trx/contrib/systemd'make[3]: Nothing to be done for 'all'.make[3]: Leaving directory '/root/osmo/src/osmo-trx/contrib/systemd'make[3]: Entering directory '/root/osmo/src/osmo-trx/contrib'make[3]: Nothing to be done for 'all-am'.make[3]: Leaving directory '/root/osmo/src/osmo-trx/contrib'make[2]: Leaving directory '/root/osmo/src/osmo-trx/contrib'Making all in testsmake[2]: Entering directory '/root/osmo/src/osmo-trx/tests'Making all in CommonLibsmake[3]: Entering directory '/root/osmo/src/osmo-trx/tests/CommonLibs'make[3]: Nothing to be done for 'all'.make[3]: Leaving directory '/root/osmo/src/osmo-trx/tests/CommonLibs'Making all in Transceiver52Mmake[3]: Entering directory '/root/osmo/src/osmo-trx/tests/Transceiver52M'make[3]: Nothing to be done for 'all'.make[3]: Leaving directory '/root/osmo/src/osmo-trx/tests/Transceiver52M'make[3]: Entering directory '/root/osmo/src/osmo-trx/tests'make[3]: Nothing to be done for 'all-am'.make[3]: Leaving directory '/root/osmo/src/osmo-trx/tests'make[2]: Leaving directory '/root/osmo/src/osmo-trx/tests'Making all in utilsmake[2]: Entering directory '/root/osmo/src/osmo-trx/utils' CC prbs-tool.o CCLD osmo-prbs-toolmake[2]: Leaving directory '/root/osmo/src/osmo-trx/utils'Making all in docmake[2]: Entering directory '/root/osmo/src/osmo-trx/doc'Making all in examplesmake[3]: Entering directory '/root/osmo/src/osmo-trx/doc/examples'make[3]: Nothing to be done for 'all'.make[3]: Leaving directory '/root/osmo/src/osmo-trx/doc/examples'Making all in manualsmake[3]: Entering directory '/root/osmo/src/osmo-trx/doc/manuals'make[3]: Nothing to be done for 'all'.make[3]: Leaving directory '/root/osmo/src/osmo-trx/doc/manuals'make[3]: Entering directory '/root/osmo/src/osmo-trx/doc'make[3]: Nothing to be done for 'all-am'.make[3]: Leaving directory '/root/osmo/src/osmo-trx/doc'make[2]: Leaving directory '/root/osmo/src/osmo-trx/doc'make[2]: Entering directory '/root/osmo/src/osmo-trx'make[2]: Leaving directory '/root/osmo/src/osmo-trx'make[1]: Leaving directory '/root/osmo/src/osmo-trx' ┌──(root💀kali)-[~/osmo/src/osmo-trx]└─# make checkMaking check in CommonLibsmake[1]: Entering directory '/root/osmo/src/osmo-trx/CommonLibs'make[1]: Nothing to be done for 'check'.make[1]: Leaving directory '/root/osmo/src/osmo-trx/CommonLibs'Making check in GSMmake[1]: Entering directory '/root/osmo/src/osmo-trx/GSM'make[1]: Nothing to be done for 'check'.make[1]: Leaving directory '/root/osmo/src/osmo-trx/GSM'Making check in Transceiver52Mmake[1]: Entering directory '/root/osmo/src/osmo-trx/Transceiver52M'Making check in archmake[2]: Entering directory '/root/osmo/src/osmo-trx/Transceiver52M/arch'Making check in commonmake[3]: Entering directory '/root/osmo/src/osmo-trx/Transceiver52M/arch/common'make[3]: Nothing to be done for 'check'.make[3]: Leaving directory '/root/osmo/src/osmo-trx/Transceiver52M/arch/common'Making check in x86make[3]: Entering directory '/root/osmo/src/osmo-trx/Transceiver52M/arch/x86'make[3]: Nothing to be done for 'check'.make[3]: Leaving directory '/root/osmo/src/osmo-trx/Transceiver52M/arch/x86'make[3]: Entering directory '/root/osmo/src/osmo-trx/Transceiver52M/arch'make[3]: Nothing to be done for 'check-am'.make[3]: Leaving directory '/root/osmo/src/osmo-trx/Transceiver52M/arch'make[2]: Leaving directory '/root/osmo/src/osmo-trx/Transceiver52M/arch'Making check in devicemake[2]: Entering directory '/root/osmo/src/osmo-trx/Transceiver52M/device'Making check in commonmake[3]: Entering directory '/root/osmo/src/osmo-trx/Transceiver52M/device/common'make[3]: Nothing to be done for 'check'.make[3]: Leaving directory '/root/osmo/src/osmo-trx/Transceiver52M/device/common'Making check in uhdmake[3]: Entering directory '/root/osmo/src/osmo-trx/Transceiver52M/device/uhd'make[3]: Nothing to be done for 'check'.make[3]: Leaving directory '/root/osmo/src/osmo-trx/Transceiver52M/device/uhd'make[3]: Entering directory '/root/osmo/src/osmo-trx/Transceiver52M/device'make[3]: Nothing to be done for 'check-am'.make[3]: Leaving directory '/root/osmo/src/osmo-trx/Transceiver52M/device'make[2]: Leaving directory '/root/osmo/src/osmo-trx/Transceiver52M/device'make[2]: Entering directory '/root/osmo/src/osmo-trx/Transceiver52M'make[2]: Nothing to be done for 'check-am'.make[2]: Leaving directory '/root/osmo/src/osmo-trx/Transceiver52M'make[1]: Leaving directory '/root/osmo/src/osmo-trx/Transceiver52M'Making check in contribmake[1]: Entering directory '/root/osmo/src/osmo-trx/contrib'Making check in systemdmake[2]: Entering directory '/root/osmo/src/osmo-trx/contrib/systemd'make[2]: Nothing to be done for 'check'.make[2]: Leaving directory '/root/osmo/src/osmo-trx/contrib/systemd'make[2]: Entering directory '/root/osmo/src/osmo-trx/contrib'make[2]: Nothing to be done for 'check-am'.make[2]: Leaving directory '/root/osmo/src/osmo-trx/contrib'make[1]: Leaving directory '/root/osmo/src/osmo-trx/contrib'Making check in testsmake[1]: Entering directory '/root/osmo/src/osmo-trx/tests'Making check in CommonLibsmake[2]: Entering directory '/root/osmo/src/osmo-trx/tests/CommonLibs'make BitVectorTest PRBSTest InterthreadTest TimevalTest VectorTest LogTestmake[3]: Entering directory '/root/osmo/src/osmo-trx/tests/CommonLibs' CXX BitVectorTest.o CXXLD BitVectorTest CXX PRBSTest.o CXXLD PRBSTest CXX InterthreadTest.o CXXLD InterthreadTest CXX TimevalTest.o CXXLD TimevalTest CXX VectorTest.o CXXLD VectorTest CXX LogTest.o CXXLD LogTestmake[3]: Leaving directory '/root/osmo/src/osmo-trx/tests/CommonLibs'make[2]: Leaving directory '/root/osmo/src/osmo-trx/tests/CommonLibs'Making check in Transceiver52Mmake[2]: Entering directory '/root/osmo/src/osmo-trx/tests/Transceiver52M'make convolve_testmake[3]: Entering directory '/root/osmo/src/osmo-trx/tests/Transceiver52M' CC convolve_test-convolve_test.o CCLD convolve_testmake[3]: Leaving directory '/root/osmo/src/osmo-trx/tests/Transceiver52M'make[2]: Leaving directory '/root/osmo/src/osmo-trx/tests/Transceiver52M'make[2]: Entering directory '/root/osmo/src/osmo-trx/tests'make check-localmake[3]: Entering directory '/root/osmo/src/osmo-trx/tests'/bin/bash './testsuite'## ---------------------------------- #### osmo-trx 1.5.0.15-8745 test suite. #### ---------------------------------- ## Regression tests. 1: LMSDeviceTest skipped (testsuite.at:6) 2: BitVectorTest ok 3: InterthreadTest ok 4: LogTest ok 5: PRBSTest ok 6: TimevalTest ok 7: VectorTest ok 8: convolve_test ok ## ------------- #### Test results. #### ------------- ## 7 tests were successful.1 test was skipped.make[3]: Leaving directory '/root/osmo/src/osmo-trx/tests'make[2]: Leaving directory '/root/osmo/src/osmo-trx/tests'make[1]: Leaving directory '/root/osmo/src/osmo-trx/tests'Making check in utilsmake[1]: Entering directory '/root/osmo/src/osmo-trx/utils'make[1]: Nothing to be done for 'check'.make[1]: Leaving directory '/root/osmo/src/osmo-trx/utils'Making check in docmake[1]: Entering directory '/root/osmo/src/osmo-trx/doc'Making check in examplesmake[2]: Entering directory '/root/osmo/src/osmo-trx/doc/examples'make[2]: Nothing to be done for 'check'.make[2]: Leaving directory '/root/osmo/src/osmo-trx/doc/examples'Making check in manualsmake[2]: Entering directory '/root/osmo/src/osmo-trx/doc/manuals'make[2]: Nothing to be done for 'check'.make[2]: Leaving directory '/root/osmo/src/osmo-trx/doc/manuals'make[2]: Entering directory '/root/osmo/src/osmo-trx/doc'make[2]: Nothing to be done for 'check-am'.make[2]: Leaving directory '/root/osmo/src/osmo-trx/doc'make[1]: Leaving directory '/root/osmo/src/osmo-trx/doc'make[1]: Entering directory '/root/osmo/src/osmo-trx'make[1]: Leaving directory '/root/osmo/src/osmo-trx' ┌──(root💀kali)-[~/osmo/src/osmo-trx]└─# make installMaking install in CommonLibsmake[1]: Entering directory '/root/osmo/src/osmo-trx/CommonLibs'make[2]: Entering directory '/root/osmo/src/osmo-trx/CommonLibs'make[2]: Nothing to be done for 'install-exec-am'.make[2]: Nothing to be done for 'install-data-am'.make[2]: Leaving directory '/root/osmo/src/osmo-trx/CommonLibs'make[1]: Leaving directory '/root/osmo/src/osmo-trx/CommonLibs'Making install in GSMmake[1]: Entering directory '/root/osmo/src/osmo-trx/GSM'make[2]: Entering directory '/root/osmo/src/osmo-trx/GSM'make[2]: Nothing to be done for 'install-exec-am'.make[2]: Nothing to be done for 'install-data-am'.make[2]: Leaving directory '/root/osmo/src/osmo-trx/GSM'make[1]: Leaving directory '/root/osmo/src/osmo-trx/GSM'Making install in Transceiver52Mmake[1]: Entering directory '/root/osmo/src/osmo-trx/Transceiver52M'Making install in archmake[2]: Entering directory '/root/osmo/src/osmo-trx/Transceiver52M/arch'Making install in commonmake[3]: Entering directory '/root/osmo/src/osmo-trx/Transceiver52M/arch/common'make[4]: Entering directory '/root/osmo/src/osmo-trx/Transceiver52M/arch/common'make[4]: Nothing to be done for 'install-exec-am'.make[4]: Nothing to be done for 'install-data-am'.make[4]: Leaving directory '/root/osmo/src/osmo-trx/Transceiver52M/arch/common'make[3]: Leaving directory '/root/osmo/src/osmo-trx/Transceiver52M/arch/common'Making install in x86make[3]: Entering directory '/root/osmo/src/osmo-trx/Transceiver52M/arch/x86'make[4]: Entering directory '/root/osmo/src/osmo-trx/Transceiver52M/arch/x86'make[4]: Nothing to be done for 'install-exec-am'.make[4]: Nothing to be done for 'install-data-am'.make[4]: Leaving directory '/root/osmo/src/osmo-trx/Transceiver52M/arch/x86'make[3]: Leaving directory '/root/osmo/src/osmo-trx/Transceiver52M/arch/x86'make[3]: Entering directory '/root/osmo/src/osmo-trx/Transceiver52M/arch'make[4]: Entering directory '/root/osmo/src/osmo-trx/Transceiver52M/arch'make[4]: Nothing to be done for 'install-exec-am'.make[4]: Nothing to be done for 'install-data-am'.make[4]: Leaving directory '/root/osmo/src/osmo-trx/Transceiver52M/arch'make[3]: Leaving directory '/root/osmo/src/osmo-trx/Transceiver52M/arch'make[2]: Leaving directory '/root/osmo/src/osmo-trx/Transceiver52M/arch'Making install in devicemake[2]: Entering directory '/root/osmo/src/osmo-trx/Transceiver52M/device'Making install in commonmake[3]: Entering directory '/root/osmo/src/osmo-trx/Transceiver52M/device/common'make[4]: Entering directory '/root/osmo/src/osmo-trx/Transceiver52M/device/common'make[4]: Nothing to be done for 'install-exec-am'.make[4]: Nothing to be done for 'install-data-am'.make[4]: Leaving directory '/root/osmo/src/osmo-trx/Transceiver52M/device/common'make[3]: Leaving directory '/root/osmo/src/osmo-trx/Transceiver52M/device/common'Making install in uhdmake[3]: Entering directory '/root/osmo/src/osmo-trx/Transceiver52M/device/uhd'make[4]: Entering directory '/root/osmo/src/osmo-trx/Transceiver52M/device/uhd'make[4]: Nothing to be done for 'install-exec-am'.make[4]: Nothing to be done for 'install-data-am'.make[4]: Leaving directory '/root/osmo/src/osmo-trx/Transceiver52M/device/uhd'make[3]: Leaving directory '/root/osmo/src/osmo-trx/Transceiver52M/device/uhd'make[3]: Entering directory '/root/osmo/src/osmo-trx/Transceiver52M/device'make[4]: Entering directory '/root/osmo/src/osmo-trx/Transceiver52M/device'make[4]: Nothing to be done for 'install-exec-am'.make[4]: Nothing to be done for 'install-data-am'.make[4]: Leaving directory '/root/osmo/src/osmo-trx/Transceiver52M/device'make[3]: Leaving directory '/root/osmo/src/osmo-trx/Transceiver52M/device'make[2]: Leaving directory '/root/osmo/src/osmo-trx/Transceiver52M/device'make[2]: Entering directory '/root/osmo/src/osmo-trx/Transceiver52M'make[3]: Entering directory '/root/osmo/src/osmo-trx/Transceiver52M' /usr/bin/mkdir -p '/usr/local/bin' /bin/bash ../libtool --mode=install /usr/bin/install -c osmo-trx-uhd '/usr/local/bin'libtool: install: /usr/bin/install -c osmo-trx-uhd /usr/local/bin/osmo-trx-uhdmake[3]: Nothing to be done for 'install-data-am'.make[3]: Leaving directory '/root/osmo/src/osmo-trx/Transceiver52M'make[2]: Leaving directory '/root/osmo/src/osmo-trx/Transceiver52M'make[1]: Leaving directory '/root/osmo/src/osmo-trx/Transceiver52M'Making install in contribmake[1]: Entering directory '/root/osmo/src/osmo-trx/contrib'Making install in systemdmake[2]: Entering directory '/root/osmo/src/osmo-trx/contrib/systemd'make[3]: Entering directory '/root/osmo/src/osmo-trx/contrib/systemd'make[3]: Nothing to be done for 'install-exec-am'. /usr/bin/mkdir -p '/lib/systemd/system' /usr/bin/install -c -m 644 osmo-trx-uhd.service '/lib/systemd/system'make[3]: Leaving directory '/root/osmo/src/osmo-trx/contrib/systemd'make[2]: Leaving directory '/root/osmo/src/osmo-trx/contrib/systemd'make[2]: Entering directory '/root/osmo/src/osmo-trx/contrib'make[3]: Entering directory '/root/osmo/src/osmo-trx/contrib'make[3]: Nothing to be done for 'install-exec-am'.make[3]: Nothing to be done for 'install-data-am'.make[3]: Leaving directory '/root/osmo/src/osmo-trx/contrib'make[2]: Leaving directory '/root/osmo/src/osmo-trx/contrib'make[1]: Leaving directory '/root/osmo/src/osmo-trx/contrib'Making install in testsmake[1]: Entering directory '/root/osmo/src/osmo-trx/tests'Making install in CommonLibsmake[2]: Entering directory '/root/osmo/src/osmo-trx/tests/CommonLibs'make[3]: Entering directory '/root/osmo/src/osmo-trx/tests/CommonLibs'make[3]: Nothing to be done for 'install-exec-am'.make[3]: Nothing to be done for 'install-data-am'.make[3]: Leaving directory '/root/osmo/src/osmo-trx/tests/CommonLibs'make[2]: Leaving directory '/root/osmo/src/osmo-trx/tests/CommonLibs'Making install in Transceiver52Mmake[2]: Entering directory '/root/osmo/src/osmo-trx/tests/Transceiver52M'make[3]: Entering directory '/root/osmo/src/osmo-trx/tests/Transceiver52M'make[3]: Nothing to be done for 'install-exec-am'.make[3]: Nothing to be done for 'install-data-am'.make[3]: Leaving directory '/root/osmo/src/osmo-trx/tests/Transceiver52M'make[2]: Leaving directory '/root/osmo/src/osmo-trx/tests/Transceiver52M'make[2]: Entering directory '/root/osmo/src/osmo-trx/tests'make[3]: Entering directory '/root/osmo/src/osmo-trx/tests'make[3]: Nothing to be done for 'install-exec-am'.make[3]: Nothing to be done for 'install-data-am'.make[3]: Leaving directory '/root/osmo/src/osmo-trx/tests'make[2]: Leaving directory '/root/osmo/src/osmo-trx/tests'make[1]: Leaving directory '/root/osmo/src/osmo-trx/tests'Making install in utilsmake[1]: Entering directory '/root/osmo/src/osmo-trx/utils'make[2]: Entering directory '/root/osmo/src/osmo-trx/utils'make[2]: Nothing to be done for 'install-exec-am'.make[2]: Nothing to be done for 'install-data-am'.make[2]: Leaving directory '/root/osmo/src/osmo-trx/utils'make[1]: Leaving directory '/root/osmo/src/osmo-trx/utils'Making install in docmake[1]: Entering directory '/root/osmo/src/osmo-trx/doc'Making install in examplesmake[2]: Entering directory '/root/osmo/src/osmo-trx/doc/examples'make[3]: Entering directory '/root/osmo/src/osmo-trx/doc/examples'make[3]: Nothing to be done for 'install-exec-am'. /usr/bin/mkdir -p '/usr/local/etc/osmocom' /usr/bin/install -c -m 644 osmo-trx-uhd/osmo-trx-uhd.cfg '/usr/local/etc/osmocom'make install-data-hookmake[4]: Entering directory '/root/osmo/src/osmo-trx/doc/examples'for f in $(find . -type f -name '*.cfg*' | sed -e 's,^.,,'); do \ j="/usr/local/share/doc/osmo-trx/examples/$f" && \ mkdir -p "$(dirname $j)" && \ /usr/bin/install -c -m 644 ./$f $j; \donemake[4]: Leaving directory '/root/osmo/src/osmo-trx/doc/examples'make[3]: Leaving directory '/root/osmo/src/osmo-trx/doc/examples'make[2]: Leaving directory '/root/osmo/src/osmo-trx/doc/examples'Making install in manualsmake[2]: Entering directory '/root/osmo/src/osmo-trx/doc/manuals'make[3]: Entering directory '/root/osmo/src/osmo-trx/doc/manuals'make[3]: Nothing to be done for 'install-exec-am'.make[3]: Nothing to be done for 'install-data-am'.make[3]: Leaving directory '/root/osmo/src/osmo-trx/doc/manuals'make[2]: Leaving directory '/root/osmo/src/osmo-trx/doc/manuals'make[2]: Entering directory '/root/osmo/src/osmo-trx/doc'make[3]: Entering directory '/root/osmo/src/osmo-trx/doc'make[3]: Nothing to be done for 'install-exec-am'.make[3]: Nothing to be done for 'install-data-am'.make[3]: Leaving directory '/root/osmo/src/osmo-trx/doc'make[2]: Leaving directory '/root/osmo/src/osmo-trx/doc'make[1]: Leaving directory '/root/osmo/src/osmo-trx/doc'make[1]: Entering directory '/root/osmo/src/osmo-trx'make[2]: Entering directory '/root/osmo/src/osmo-trx'make[2]: Nothing to be done for 'install-exec-am'.make[2]: Nothing to be done for 'install-data-am'.make[2]: Leaving directory '/root/osmo/src/osmo-trx'make[1]: Leaving directory '/root/osmo/src/osmo-trx' ┌──(root💀kali)-[~/osmo/src/osmo-trx]└─# which osmo-trx-uhd/usr/local/bin/osmo-trx-uhd ┌──(root💀kali)-[~/osmo/src/osmo-trx]└─# ls -l /usr/local/bin/osmo-trx-uhd-rwxr-xr-x 1 root root 5199368 Mar 28 12:39 /usr/local/bin/osmo-trx-uhd ┌──(root💀kali)-[~/osmo/src/osmo-trx]└─# osmo-trx-uhd -C ./doc/examples/osmo-trx-uhd/osmo-trx-uhd.cfgTue Mar 28 12:39:48 2023 DLGLOBAL <0008> cpu_sched_vty.c:471 Setting SCHED_RR priority 18Tue Mar 28 12:39:48 2023 DLGLOBAL <0008> telnet_interface.c:88 Available via telnet 127.0.0.1 4237Tue Mar 28 12:39:48 2023 DLCTRL <000f> control_if.c:1014 CTRL at 127.0.0.1 4236[INFO] [UHD] linux; GNU C++ version 12.2.0; Boost_107400; UHD_4.3.0.0+ds1-4+b2

2 years, 5 months

GSM-EFR SID support in libosmo-abis

by SADANAND VISHWAS

Hello, I was going through libosmo-abis codebase to understand how it handles “Rtp to Trau” and vice-versa GSM-EFR conversions. I was able to find “RTP to Trau” and “Trau to Rtp” conversion code of EFR speech frames, but could not find anything related to EFR SID (silence) frames. can you please guide me if above is already present in the library or how can we implement it? Thanks, Sadanand Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows

2 years, 5 months

Seeking pcap of RTP stream from nanoBTS

by Mychaela Falconia

Hello GSM community, Would anyone in either of the two sub-communities of GSM (OsmoCNI and FC) happen to have a working setup with an ip.access nanoBTS, specifically with working voice calls? For the purpose of this inquiry, that "working setup" can be either with Osmocom CNI sw or with whatever original proprietary sw was once "official" for these ip.access nanoBTS units. If anyone does have a working nanoBTS setup with any sw, would you be willing to produce and share a packet capture (pcap file) of a working voice call, particularly the RTP stream originating from the nanoBTS? I am particularly interested in seeing a nanoBTS-generated RTP stream in either FR1 or EFR codec, as opposed to AMR or HR, coming from a GSM call UL with DTX enabled - having a 'dtx uplink' line in OsmoBSC config under 'bts N' should do it. The reason for my interest? I am looking to see what the pre-existing (before Osmocom) implementation of GSM-UL-to-RTP conversion in nanoBTS does in the two corner cases of (1) the MS exercising DTX during speech pauses and (2) speech frame 20 ms windows on TCH UL being stolen for FACCH. In case 1, does nanoBTS produce an intentional gap in its transmitted RTP stream (no packets sent at all) like OsmoBTS does, or does it do something different? Does it perhaps send RTP packets with zero-length payload, or some in-band bit pattern that is meant to indicate "bad frame, no data"? Case 2 is also interesting: current osmo-bts-trx (based on my reading of code, no hw to test on) invokes FR1 ECU and emits its output in this case, whereas stock (without my hacky patches) osmo-bts-sysmo exhibits an outright bug whereby nothing is emitted on RTP during the FACCH-stolen 20 ms window, and that gap in the RTP stream is NOT accounted for in the timestamps of subsequent RTP packets. Once again, I can only wonder what the pre-Osmocom implementation in nanoBTS does in this case. I would really like to produce a clean, potentially-mergeable patch to OsmoBTS and submit it to Gerrit, a patch that would add vty config settings selecting among several possible behaviours for RTP output in cases of DTX silence, FACCH stealing or bad radio Rx - but I really need to know what the different "reasonable" behaviour choices are, and I feel that we as in FOSS GSM community also need to know what our proprietary predecessors did in this area. I am not able to test this nanoBTS behaviour myself because even though I have nanoBTS hw (one PCS1900 unit and one GSM850), I have had no success in getting it to work with Osmocom - and my troubleshooting attempts hit a brick wall when the misbehaviour appears to be somewhere in the proprietary black box of nanoBTS. Hence I really need help from someone in the community who does have a working nanoBTS setup (with any sw) and who could make some test voice calls (ideally one FR1 and one EFR, but even just one of these two codecs would be interesting to see) with an RTP packet capture running, and then share the resulting pcap file. During that test voice call, it would be ideal if the tester could alternate between speaking and silence, and also cause some FACCH activity, perhaps by pressing DTMF keys. M~

2 years, 5 months

ttcn3-bts-test regressions

by Vadim Yanitskiy

Hi all, I was planning to do this long time ago, but somehow kept leaving this for later. Today I revisited the state of ttcn3-bts-test, which shows quite a few regressions. I believe they need to be investigated and eventually fixed, so I created several tickets for tracking these regressions in Osmocom's Redmine: * OS#5951: TC_early_immediate_assignment, * OS#5952: TC_ho_physical_info, * OS#5953: TC_ms_pwr_ctrl_{constant,pf_ewma}, * OS#5954: TC_pcu_data_ind_lqual_cb, * OS#5955: TC_pcu_[ext_]rach_content, TC_pcu_ptcch, * OS#5956: TC_rsl_rf_resource_ind. The following tickets already existed prior to my checkup: * OS#4023: TC_pcu_oml_alert, * OS#5242: TC_ipa_crcx_ack_addr, * OS#5517: TC_tx_power_ramp_adm_state_change. So far this is all about non-hopping configuration: https://jenkins.osmocom.org/jenkins/view/TTCN3/job/ttcn3-bts-test/lastCompl… The freq. hopping configuration exhibits slightly more red TCs: https://jenkins.osmocom.org/jenkins/view/TTCN3/job/ttcn3-bts-test/lastCompl… 92% vs 84% passing TCs to be precise, but this is kinda expected because of the limitations we have in fake_trx: FAKE_* CTRL commands are applied to just one transceiver, not affecting others, which are also part of the Mobile Allocation. Mostly the meas related TCs are affected. The following TC groups are quite stable and mostly all green: https://jenkins.osmocom.org/jenkins/view/TTCN3/job/ttcn3-bts-test/lastCompl… https://jenkins.osmocom.org/jenkins/view/TTCN3/job/ttcn3-bts-test/lastCompl… https://jenkins.osmocom.org/jenkins/view/TTCN3/job/ttcn3-bts-test/lastCompl… https://jenkins.osmocom.org/jenkins/view/TTCN3/job/ttcn3-bts-test/lastCompl… The following two TC groups have never been stable/all green, AFAICT: https://jenkins.osmocom.org/jenkins/view/TTCN3/job/ttcn3-bts-test/lastCompl… https://jenkins.osmocom.org/jenkins/view/TTCN3/job/ttcn3-bts-test/lastCompl… We may want to create more tickets for those, maybe less granular (i.e. one ticket per group). I am not familiar with these two TC groups, so would be nice to get some input from those who write them. What would it take to get them fixed? Are there any tickets already? If could not find any, but I only did a quick search. Best regards, Vadim. -- - Vadim Yanitskiy <vyanitskiy at sysmocom.de> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschaeftsfuehrer / Managing Director: Harald Welte

2 years, 5 months

OsmoDevCall on Mar 15, 2023: Circuit Switched Data (CSD) in GSM

by Harald Welte

Dear Osmocom community, we're happy to announce the next incarnation of OsmoDevCall. when: March 15, 2023 at 20:00 CET where: https://osmocom.org/OsmoDevCall (Big Blue Button) This time, @laforge be presenting on Long range communications in the HF band CSD is the mechanism by which circuit-switched data calls can be made over classic GSM/2G (and later also UMTS/3G) networks. They resembled the modem call of circuit-switched networks, but of course no voiceband modem is involved. For more information, see our CSD wiki page at https://osmocom.org/projects/cellular-infrastructure/wiki/CSD This meeting will have the following schedule: 20:00 meet + greet 20:10 presentation as outlined above 21:00 unstructured supplementary social event [*] Attendance is free of charge and open to anyone with an interest in Osmocom or open source cellular technologies. More information about OsmoDevCall, including the schedule for further upcoming events can be found at https://osmocom.org/projects/osmo-dev-con/wiki/OsmoDevCall Looking forward to meeting you soon! Best regards, Harald [*] this is how we started to call the "unstructured" part of osmocom developer conferences in the past, basically where anyone can talk about anything, no formal schedule or structure. -- - Harald Welte <laforge(a)osmocom.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

2 years, 5 months

Play RTP packets payload obtained from the mobile phone in a call service

by morteza ali Ahmadi

Hi, I have developed a UMTS core network using a home nodeB (HNB) which the mobile phones (or UEs) can register on my network and get the required services such as call service. I have implemented all the required procedures for call service and I can establish a successful call for my connected UEs. In one of the most important procedures, i.e **Call Proceeding**, I have identified the coding of speech transferred between UEs and core. Here is my coding options (in wireshark): GSM A-I/F DTAP - Call Proceeding Protocol Discriminator: Call Control; call related SS messages (3) .... 0011 = Protocol discriminator: Call Control; call related SS messages (0x3) 1... .... = TI flag: allocated by receiver .000 .... = TIO: 0 00.. .... = Sequence number: 0 ..00 0010 = DTAP Call Control Message Type: Call Proceeding (0x02) Bearer Capability 1 - (Spare) Element ID: 0x04 Length: 6 Octet 3 0... .... = Extension: Extended .11. .... = Radio channel requirement: Spare ...0 .... = Coding standard: GSM standardized coding .... 0... = Transfer mode: circuit .... .000 = Information transfer capability: Speech (0x0) Octets 3a - Speech Versions 0... .... = Extension: Extended .0.. .... = Coding: octet used for extension of information transfer capability ..00 .... = Spare bit(s): 0 .... 0010 = Speech version indication: GSM full rate speech version 2(GSM EFR) (0x2) 0... .... = Extension: Extended .0.. .... = Coding: octet used for extension of information transfer capability ..00 .... = Spare bit(s): 0 .... 1000 = Speech version indication: GSM full rate speech version 5(FR AMR-WB) (0x8) 0... .... = Extension: Extended .0.. .... = Coding: octet used for extension of information transfer capability ..00 .... = Spare bit(s): 0 .... 0100 = Speech version indication: GSM full rate speech version 3(FR AMR) (0x4) 0... .... = Extension: Extended .0.. .... = Coding: octet used for extension of information transfer capability ..00 .... = Spare bit(s): 0 .... 0101 = Speech version indication: GSM half rate speech version 3(HR AMR) (0x5) 1... .... = Extension: No Extension .0.. .... = Coding: octet used for extension of information transfer capability ..00 .... = Spare bit(s): 0 .... 0001 = Speech version indication: GSM half rate speech version 1(GSM HR) (0x1) So I can see the RTP packets transferred between UE and core. An instance is mentioned here (in wireshark): Real-Time Transport Protocol [Stream setup by RANAP (frame 2950)] 10.. .... = Version: RFC 1889 Version (2) ..0. .... = Padding: False ...0 .... = Extension: False .... 0000 = Contributing source identifiers count: 0 0... .... = Marker: False Payload type: DynamicRTP-Type-96 (96) Sequence number: 56611 [Extended sequence number: 56611] Timestamp: 424448575 Synchronization Source identifier: 0x5c260101 (1545994497) RFC 2198: Redundant Audio Data Header 1: PT=ITU-T G.728 0... .... = Follow: Not set .000 1111 = Payload type: ITU-T G.728 (15) Payload: 0028ba44776b3eee7a050039cdaa521cc20ac08d2bcf1818… I have aggregated all RTP packets payload. How can I convert the aggregated bytes to a hearable audio? -- *When there is much light, The shadow is deep...*

2 years, 5 months

Extract and parsing TCAP + CAP parts from SCCP messages

by Hadi Rezaee

Hello there, I was wondering if there is any snippet or sample code for extracting TCAP and then CAP parts from SCCP messages. So, What I've done so far was to connect to SG system as a client and called to 'osmo_sccp_user_bind' function to catch SCCP message: osmo_sccp_user_bind(sccp, 0, handle_sccp_msg, NULL); . . . int handle_sccp_message(struct osmo_prim_hdr *oph, void *ctx) { struct osmo_scu_prim *scu_prim = (struct osmo_scu_prim *)oph; struct osmo_sccp_user *scu = ctx; struct gsm_subscriber_connection *conn; int rc = 0; switch (OSMO_PRIM_HDR(&scu_prim->oph)) { case OSMO_PRIM(OSMO_SCU_PRIM_N_UNITDATA, PRIM_OP_INDICATION): // TCAP parsing ?! break; default: break; } return rc; } Thanks

2 years, 6 months

A new GSM codec libraries and utilities package

by Mychaela Falconia

Hello GSM community, I am pleased to announce the first release of Themyscira GSM codec libraries and utilities package: ftp://ftp.freecalypso.org/pub/GSM/codecs/gsm-codec-lib-r1.tar.bz2 The two principal libraries contained in this package, libgsmefr and libgsmfrp, continue the tradition that was started back in 1990s with the first release of libgsm, a Unix-oriented, C-library-embodied, Free Software implementation of GSM 06.10 speech transcoder. The original libgsm was written and released long before anyone in the hacker community even dreamed of running their own GSM network or building their own GSM MS, but it is now used somewhere deep under the hood (under lots of higher layers) by every GSM network-side implementation that includes an RTP transcoding gateway to other voice networks, activated whenever a GSM voice call is connected using good old FR codec rather than AMR, and is likewise used for the same purpose by anyone seeking to achieve working voice in an SDR-based GSM MS implementation. The present gsm-codec-lib release - a public works project of the Women's Republic of Themyscira - continues in the spirit of libgsm by offering two more similar libraries: 1) libgsmefr is a librified (turned into a library) version of the EFR reference code from ETSI, with all state variables converted from global vars into proper state structures, and with additional code clean-up to make it function as a speech encoder and decoder library on the same principle as libgsm, but for EFR codec instead of FR1. All beyond-speech functions of the original EFR reference code (VAD, DTX, comfort noise, error concealment) are included in libgsmefr, allowing this library to be used to implement a *proper* speech transcoder for GSM-EFR voice service. I have previously noted that the general trend in the FOSS GSM community is to use the popular AMR library libopencore-amrnb not only for AMR, but also for EFR. However, this approach is incorrect: the SID and comfort noise mechanism of EFR is different from AMR, and if you feed the uplink of a GSM-EFR call, containing SIDs and BFI skipped frames, to libopencore-amrnb decoder, there will be strange noises in the output in places where the GSM MS sent SID. Decoding EFR from a GSM call uplink requires a proper EFR library, not AMR, and I wasn't able to find any workable pre-existing implementation prior to producing Themyscira libgsmefr. 2) libgsmfrp is a preprocessor intended to be called prior to gsm_decode() from libgsm, implementing Rx DTX handler functions of GSM 06.11, 06.12 and 06.31. This preprocessor is required for anyone seeking to implement GSM FR service in the traditional way depicted in Figure 1 in 3GPP TS 46.001, as opposed to the "cut corners" way that seems to be favored in the land of Osmocom. When used as part of GSM network deployment, as opposed to lab experimentation on the mobile side of GSM, the two just-released Themyscira libraries work best together with this patch to osmo-bts: https://www.freecalypso.org/hg/themwi-system-sw/file/tip/osmo-patches/osmo-… implementing this extension to RTP transport format: https://www.freecalypso.org/hg/themwi-system-sw/file/tip/doc/RTP-BFI-extens… The "go along to get along" community appears to operate on a consensus that the RTP stream should be paused when the uplink is in DTX, or when a traffic frame was stolen for FACCH or lost to radio errors - but I disagree with that approach, and instead operate my GSM network on the principle of sending an RTP packet in *every* 20 ms slot, be it rain or shine. In the "consensus" approach the speech decoding path in the transcoding MGW never executes at all during frame stream pauses (when no RTP packets are sent), but in my "traditionalist" approach (mimicking the ways of TDM) that decoding function does get called every 20 ms, and it must produce *some* output toward PSTN in every 20 ms window, whether the MS was transmitting or not, and whether this MS output was received or lost. The Rx DTX handler becomes essential in such operation: when there is no speech traffic from the MS, libgsmfrp fills in comfort noise or previous speech frame substitution and muting as appropriate per the rules of GSM 06.31. In the case of EFR this functionality is integral to the original reference code from ETSI and thus appears in libgsmefr, but in the case of FR1 codec this functionality takes the form of a preprocessor, implemented in libgsmfrp. In any case, the two newly released libraries are intended to sit on the same "rank" in the software integration hierarchy as classic libgsm from 1990s, and higher-level projects by various parties should feel free to use them in the same manner how they currently use libgsm and libopencore-amrnb. I encourage gapk and various people's transcoding MGW implementations to take advantages of these newly available production quality GSM codec libraries. With devotion to GSM Forever, (Hasta la Victoria, Siempre,) Mother Mychaela

2 years, 6 months

SCCP RLC

by Neels Hofmeyr

I'm trying to clean up the connection management in osmo-hnbgw. For that purpose I'd like to be notified of the SCCP RLC message: I'd like to free a HNB-to-CN / RUA-to-SCCP context mapping when the SCCP local reference becomes invalid. I kind of thought I would receive a OSMO_SCU_PRIM_N_DISCONNECT PRIM_OP_CONFIRM up the user_sap, but that's not happening. I see the SCCP RLC logged like this: 20230216042453894 DLSS7 DEBUG 0: asp-asp-clnt-OsmoHNBGW: xua_cli_read_cb(): sctp_recvmsg() returned 40 (flags=0x80) (osmo_ss7.c:1906) 20230216042453894 DLM3UA DEBUG 0: asp-asp-clnt-OsmoHNBGW: Received M3UA Message (XFER:DATA) (m3ua.c:714) 20230216042453894 DLM3UA DEBUG 0: asp-asp-clnt-OsmoHNBGW: m3ua_rx_xfer (m3ua.c:543) 20230216042453894 DLM3UA DEBUG 0: asp-asp-clnt-OsmoHNBGW: m3ua_rx_xfer(): M3UA data header: opc=188=0.23.4 dpc=189=0.23.5 (m3ua.c:566) 20230216042453894 DLSS7 DEBUG m3ua_hmdc_rx_from_l2(): found dpc=189=0.23.5 as local (osmo_ss7_hmrt.c:276) 20230216042453894 DLSS7 DEBUG scrc_rx_mtp_xfer_ind_xua: HDR=(CO:RELCO,V=0,LEN=0), PART(T=Destination Reference,L=4,D=000003f0), PART(T=Source Reference,L=4,D=0073dcf0) (sccp_scrc.c:472) 20230216042453894 DLSCCP DEBUG Received CO:RELCO for local reference 1008 (sccp_scoc.c:1799) 20230216042453894 DLSCCP DEBUG SCCP-SCOC(1008)[0x612000008da0]{DISCONN_PEND}: Received Event RCOC-RELEASE_COMPLETE.ind (sccp_scoc.c:1833) 20230216042453894 DLSCCP DEBUG SCCP-SCOC(1008)[0x612000008da0]{DISCONN_PEND}: state_chg to IDLE (sccp_scoc.c:1309) 20230216042453894 DLSCCP DEBUG SCCP-SCOC(1008)[0x612000008da0]{IDLE}: Terminating (cause = OSMO_FSM_TERM_REQUEST) (sccp_scoc.c:539) 20230216042453894 DLSCCP DEBUG SCCP-SCOC(1008)[0x612000008da0]{IDLE}: Freeing instance (sccp_scoc.c:539) 20230216042453894 DLSCCP DEBUG SCCP-SCOC(1008)[0x612000008da0]{IDLE}: Deallocated (fsm.c:568) but nothing arrives at sccp_sap_up() in hnbgw_cn.c Is my idea flawed somehow, or is the prim dispatch missing in libosmo-sigtran? Thanks! ~N

2 years, 6 months

OsmoDevCall on Feb 15, 2023: Long range communications in the HF band

by Harald Welte

Dear Osmocom community, we're happy to announce the next incarnation of OsmoDevCall. when: February 15, 2023 at 20:00 CET where: https://osmocom.org/OsmoDevCall This time, @rafael2kwill be presenting on Long range communications in the HF band This meeting will have the following schedule: 20:00 meet + greet 20:10 presentation as outlined above 21:00 unstructured supplementary social event [*] Attendance is free of charge and open to anyone with an interest in Osmocom or open source cellular technologies. More information about OsmoDevCall, including the schedule for further upcoming events can be found at https://osmocom.org/projects/osmo-dev-con/wiki/OsmoDevCall Looking forward to meeting you soon! Best regards, Harald [*] this is how we started to call the "unstructured" part of osmocom developer conferences in the past, basically where anyone can talk about anything, no formal schedule or structure. -- - Harald Welte <laforge(a)osmocom.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

2 years, 6 months

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