(gdb) bt full
#0  0x080b816e in __ast_pbx_run (c=0xb7a3f0f0) at pbx.c:2423
        waittime = 0
        dst_exten = "Q\000n\000Aãl\000ìã|LÀ\001Í\000\000\000\000\000°ë|\005øã|\0                                     05D¼Ë\000Local/5694@AgentQ\000n\000Aãl\000\000\000\000LÀ\001Í\000\000\000\000\00                                     0°ë|\005øã|\005ÄUl\000Local/5689@AgentQ\000n\000Aãl\000\000\000\000LÀ\001Í\000\0                                     00\000\000\000°ë|\005\030´Ç·D¼Ë\000Loca(¸x\000ÄUl\000\020\000\000\000Q\000n\0000                                     Ll\000hã|\000\f\000\000\000ô\237x\000\f\000\000\000 ¸x\000\230ã|\005ö|l\000 ¸x\0                                     00\f\000\000\000\030\000\000\000à\f\002\000\f\000\000\000"...
        pos = 0
        digit = 0
        found = 1
        res = 0
        autoloopflag = 0
        error = 0
        __PRETTY_FUNCTION__ = "__ast_pbx_run"
#1  0x080b89aa in pbx_thread (data=0xb7a3f0f0) at pbx.c:2561
        c = (struct ast_channel *) 0xb7a3f0f0
#2  0x080ef9dd in dummy_start (data=0xb7a55478) at utils.c:545
        _buffer = {__routine = 0x8068201 <ast_unregister_thread>,
  __arg = 0x57cebb0, __canceltype = 92071000, __prev = 0x0}
        ret = (void *) 0x788664
        a = {start_routine = 0x80b8993 <pbx_thread>, data = 0xb7a3f0f0,
  name = 0xb7aa65e0 "pbx_thread", ' ' <repeats 11 times>, "started at [ 2585] pb                                     ---Type <return> to continue, or q <return> to quit---
x.c ast_pbx_start()"}
#3  0x00817341 in start_thread () from /lib/tls/libpthread.so.0
No symbol table info available.
#4  0x0072b6fe in clone () from /lib/tls/libc.so.6
No symbol table info available.
(gdb) q