(gdb) bt full
#0  0x0018b7a2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
No symbol table info available.
#1  0x001cb7f5 in raise () from /lib/tls/libc.so.6
No symbol table info available.
#2  0x001cd199 in abort () from /lib/tls/libc.so.6
No symbol table info available.
#3  0x001ff4ea in __libc_message () from /lib/tls/libc.so.6
No symbol table info available.
#4  0x00205c6f in _int_free () from /lib/tls/libc.so.6
No symbol table info available.
#5  0x00205fea in free () from /lib/tls/libc.so.6
No symbol table info available.
#6  0x001f6516 in fclose@@GLIBC_2.1 () from /lib/tls/libc.so.6
No symbol table info available.
#7  0x08071bd7 in ast_closestream (f=0x8b942b8) at file.c:742
        cmd = 0x0
        size = 0
#8  0x00338e0f in moh_files_release (chan=0x8c4d880, data=0x8b67348) at res_musiconhold.c:199
        state = (struct moh_files_state *) 0x8b67348
        __PRETTY_FUNCTION__ = "moh_files_release"
#9  0x08065bbc in ast_hangup (chan=0x8c4d880) at channel.c:1515
        res = 0
        __PRETTY_FUNCTION__ = "ast_hangup"
#10 0x01b7b66a in dial_exec_full (chan=0x8c48a90, data=0x4402000, peerflags=0x43fde10) at app_dial.c:1616
        number = 0x8b86bf9 "7710"
        end_time = 1154848430
        answer_time = 1154848424
        res = -1
        u = (struct localuser *) 0x8c285a8
        rest = 0x0
        cur = 0x0
        outgoing = (struct dial_localuser *) 0x0
        peer = (struct ast_channel *) 0x8c4d880
        to = 118758
        numbusy = 0
        numcongestion = 0
        numnochan = 0
        cause = 0
        numsubst = "7710", '\0' <repeats 75 times>
        cidname = '\0' <repeats 79 times>
        privdb_val = 0
        calldurationlimit = 0
        timelimit = 0
        play_warning = 0
        warning_freq = 0
        warning_sound = 0x0
        end_sound = 0x0
        start_sound = 0x0
        dtmfcalled = 0x0
        dtmfcalling = 0x0
        status = "ANSWER\000R", '\0' <repeats 247 times>
        play_to_caller = 0
        play_to_callee = 0
        sentringing = 0
        moh = 0
        outbound_group = 0x0
        result = 0
        start_time = 1154848422
        privintro = '\0' <repeats 1023 times>
        privcid = '\0' <repeats 255 times>
        parse = 0x43fd350 "SIP"
        opermode = 0
        args = {argc = 3, argv = 0x43fd6a4, peers = 0x43fd350 "SIP", timeout = 0x43fd359 "120", options = 0x43fd35d "g",
  url = 0x0}
        opts = {flags = 32}
        opt_args = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}
        __PRETTY_FUNCTION__ = "dial_exec_full"
#11 0x01b7b7e4 in dial_exec (chan=0x8c48a90, data=0x4402000) at app_dial.c:1645
        peerflags = {flags = 32}
#12 0x08072edc in pbx_exec (c=0x8c48a90, app=0x8be1ff0, data=0x4402000) at pbx.c:503
        res = 71294608
        saved_c_appl = 0x0
        saved_c_data = 0x0
#13 0x08075a54 in pbx_extension_helper (c=0x8c48a90, con=0x0, context=0x8c48c10 "from-sip", exten=0x8c48c60 "7710",
    priority=2, label=0x0, callerid=0x8b67170 "Extension7706", action=E_SPAWN) at pbx.c:1699
        e = (struct ast_exten *) 0x8c3fe60
        app = (struct ast_app *) 0x8be1ff0
        res = 0
        q = {incstack = {0x8c142ac "from-sip", 0x0 <repeats 127 times>}, stacklen = 1, status = 5, swo = 0x0, data = 0x0,
  foundcontext = 0x8c3eec3 "common"}
        passdata = "SIP/7710|120|g", '\0' <repeats 8177 times>
        matching_action = 0
        __PRETTY_FUNCTION__ = "pbx_extension_helper"
#14 0x08076b03 in ast_spawn_extension (c=0x8c48a90, context=0x8c48c10 "from-sip", exten=0x8c48c60 "7710", priority=2,
    callerid=0x8b67170 "Extension7706") at pbx.c:2153
No locals.
#15 0x08076ff1 in __ast_pbx_run (c=0x8c48a90) at pbx.c:2253
        dst_exten = '\0' <repeats 76 times>, "ôV \000\000\000\000\0000\r,", '\0' <repeats 25 times>, "ô\237,\000 ¸,\000ð,Ç\bXC@\004ê_ \000(¸,\000ôV \000\020\000\000\000\000\000\000\000`M \000øC@\000\f\000\000\000ô\237,\000\f\000\000\000 ¸,\000\230C@\004&~ \000 ¸,\000\f\000\000\000\030\000\000\000\000\234\001\000\f\000\000\000\000ÔÅ\bô¿1\000\000\000\000\000°K@\004ÈC@\004¦¹\v\b\001\000\000\000\027=1\000 ¸,\000Ð\216Â\b\000\000\000\000°K@\004ÈC@\004\231}\n\b"
        pos = 0
        digit = 0
        found = 1
        res = 0
        autoloopflag = 0
        error = 0
        __PRETTY_FUNCTION__ = "__ast_pbx_run"
#16 0x08077ce2 in pbx_thread (data=0x8c48a90) at pbx.c:2464
        c = (struct ast_channel *) 0x8c48a90
#17 0x080bc5ba in dummy_start (data=0x8c28ed0) at utils.c:554
        _buffer = {__routine = 0x80a7f29 <ast_unregister_thread>, __arg = 0x4404bb0, __canceltype = 0, __prev = 0x0}
        ret = (void *) 0x2c866c
        a = {start_routine = 0x8077ccb <pbx_thread>, data = 0x8c48a90,
  name = 0x8b8efb0 "pbx_thread", ' ' <repeats 11 times>, "started at [ 2488] pbx.c ast_pbx_start()"}
#18 0x00312371 in start_thread () from /lib/tls/libpthread.so.0
No symbol table info available.
#19 0x0026b9be in clone () from /lib/tls/libc.so.6
No symbol table info available.