Troubleshooting

• Noise or metalic sound with codec_g723
  Configure /etc/asterisk/codecs.conf [g723] sendrate=63 or 53 as described at the top of this page.
• Distorted sound
  Disable VAD and CNG in phone and/or your VOIP provider.
• show translation - codec is not loaded
  Bump asterisk verbosity level with -vv and watch for messages right after \'loading module codec_g729...\'
• loader.c... /usr/lib/asterisk/modules/codec_g72...: cannot restore segment prot after reloc: Permission denied
  Execute:
  $ chcon -t textrel_shlib_t /usr/lib/asterisk/modules/codec_g72[39]*.so
  This happens when SELinux is enabled and Asterisk process cannot load the codec because of ELF TEXTREL in shared library. This is how IPP works and that is fine.
• loader.c... /usr/lib/asterisk/modules/codec_g72...: cannot enable executable stack as shared object requires: Permission denied
  Execute:
  $ execstack -c /usr/lib/asterisk/modules/codec_g72[39]*.so
• Error loading module codec_g72...: cannot open shared object file: No such file or directory
  Check
  $ ldd codec_g729.so
  $ strace -o trace.log -efile -f asterisk
  send ldd output and trace.log file to Asterisk G.729 Google group.
• Error loading module codec_g72...: wrong ELF class: ELFCLASS32
  Use x86_64 binaries because you\'re running 64-bit OS.
• $ ldd codec_g729.so: not a dynamic executable
  You are running 32-bit, see Notes - note #2
• Asterisk crashing at startup
  If Pentium4 codec is not working, try -no-sse builds, try Pentium3. Try ICC builds. Doesn\'t work - try Pentium and Debug builds.
• Asterisk still crashing at startup
  Compile asterisk with CFLAGS=-g
  Run asterisk in gdb (with original and -debug version of the codec):
  $ gdb /usr/sbin/asterisk
  (gdb) r -cvvv
  when it crashes do:
  (gdb) set disassembly-flavor intel
  (32-bit gdb 6.x) disassemble $eip $eip+20
  (32-bit gdb 7.x) disassemble $eip, $eip+20
  (64-bit gdb 6.x) disassemble $rip $rip+20
  (64-bit gdb 7.x) disassemble $rip, $rip+20
  (gdb) info registers
  (gdb) info threads
  (gdb) bt
  (gdb) l
  (gdb) q
  Send an output to Asterisk G.729 Google group together with the result of \'cat /proc/cpuinfo\'.
  
• Why these Illegal instruction errors?
  For in-depth technical information read http://gcc.gnu.org/PR32893 and http://bugs.gentoo.org/show_bug.cgi?id=151394.