Hi Giovanni, Seems segfault again, this is the updated version. FreeSWITCH Version 1.0.head (git-a57336b 2011-05-03 22-40-43 -0500) Started Core was generated by `./freeswitch -core -nc'. Program terminated with signal 11, Segmentation fault. #0 0x00007f0f027ce028 in switch_core_session_get_channel (session=0x0) at src/switch_core_session.c:1082 1082 switch_assert(session->channel); (gdb) bt full #0 0x00007f0f027ce028 in switch_core_session_get_channel (session=0x0) at src/switch_core_session.c:1082 __PRETTY_FUNCTION__ = "switch_core_session_get_channel" #1 0x00007f0eed7d5d0a in dtmf_received (tech_pvt=0x7f0eeda1e9e0, value=0x7f0eecd6e560 "*") at mod_skypopen.c:2138 session = 0x0 channel = 0x0 __func__ = "dtmf_received" #2 0x00007f0eed7e21dd in skypopen_signaling_read (tech_pvt=0x7f0eeda1e9e0) at skypopen_protocol.c:537 read_from_pipe = "CALL 7025 DTMF *", '\000' <repeats 4079 times> message = "CALL\000\067\060\062\065\000DTMF\000*", '\000' <repeats 4079 times> message_2 = "CALL 7025 DTMF *", '\000' <repeats 4079 times> buf = 0x0 obj = "CALL", '\000' <repeats 507 times> id = "7025", '\000' <repeats 507 times> prop = "DTMF", '\000' <repeats 507 times> value = "*", '\000' <repeats 510 times> where = 0x0 stringp = 0x7f0eecd6ed68 a = 17 howmany = 17 i = 16 __func__ = "skypopen_signaling_read" #3 0x00007f0eed7cec65 in skypopen_signaling_thread_func (thread=0x7f0ef408ad28, obj=0x7f0eeda1e9e0) at mod_skypopen.c:1399 tech_pvt = 0x7f0eeda1e9e0 res = 0 forever = 1 event = 0x0 __func__ = "skypopen_signaling_thread_func" #4 0x00007f0f0287b317 in dummy_worker (opaque=0x7f0ef408ad28) at threadproc/unix/thread.c:138 thread = 0x7f0ef408ad28 #5 0x00007f0f01cfc8ba in start_thread () from /lib/libpthread.so.0 No symbol table info available. #6 0x00007f0f0122802d in clone () from /lib/libc.so.6 No symbol table info available. #7 0x0000000000000000 in ?? () No symbol table info available. (gdb)