Giovanny, I've got several segfaults of FS, seems they belongs to SKYPOPEN Core was generated by `./freeswitch -core -nc'. Program terminated with signal 11, Segmentation fault. #0 0x00007f53e7234028 in switch_core_session_get_channel (session=0x0) at src/switch_core_session.c:1082 1082 switch_assert(session->channel); (gdb) bt full #0 0x00007f53e7234028 in switch_core_session_get_channel (session=0x0) at src/switch_core_session.c:1082 __PRETTY_FUNCTION__ = "switch_core_session_get_channel" #1 0x00007f53ce23dd0a in dtmf_received (tech_pvt=0x7f53ce470af0, value=0x7f53cd8c6560 "2") at mod_skypopen.c:2138 session = 0x0 channel = 0x0 __func__ = "dtmf_received" #2 0x00007f53ce24a1dd in skypopen_signaling_read (tech_pvt=0x7f53ce470af0) at skypopen_protocol.c:537 read_from_pipe = "CALL 41977 DTMF 2", '\000' <repeats 4078 times> message = "CALL\000\064\061\071\067\067\000DTMF\000\062", '\000' <repeats 4078 times> message_2 = "CALL 41977 DTMF 2", '\000' <repeats 4078 times> buf = 0x0 obj = "CALL", '\000' <repeats 507 times> id = "41977", '\000' <repeats 506 times> prop = "DTMF", '\000' <repeats 507 times> value = "2", '\000' <repeats 510 times> where = 0x0 stringp = 0x7f53cd8c6d68 a = 18 howmany = 18 i = 17 __func__ = "skypopen_signaling_read" #3 0x00007f53ce236c65 in skypopen_signaling_thread_func (thread=0x7f53d80a6378, obj=0x7f53ce470af0) at mod_skypopen.c:1399 tech_pvt = 0x7f53ce470af0 res = 0 forever = 1 event = 0x0 __func__ = "skypopen_signaling_thread_func" #4 0x00007f53e72e1317 in dummy_worker (opaque=0x7f53d80a6378) at threadproc/unix/thread.c:138 thread = 0x7f53d80a6378 #5 0x00007f53e67628ba in start_thread () from /lib/libpthread.so.0 No symbol table info available. #6 0x00007f53e5c8e02d in clone () from /lib/libc.so.6 No symbol table info available. #7 0x0000000000000000 in ?? () No symbol table info available. (gdb)