(gdb) bt full
#0  0x040007f2 in ?? () from /lib/ld-linux.so.2
No symbol table info available.
#1  0x041890c0 in pthread_cond_signal@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
No symbol table info available.
#2  0x0410ec96 in pthread_cond_signal () from /lib/tls/i686/cmov/libc.so.6
No symbol table info available.
#3  0x080b4d3c in __ast_cond_signal (filename=0x819e39b "devicestate.c", lineno=456, func=0x819e76c "__ast_devstate_changed_literal", cond_name=0x819e7e4 "&change_pending", cond=0x81e4ba0)
    at /home/vopella/downloads/asterisk-1.6.0-beta9/include/asterisk/lock.h:519
No locals.
#4  0x080b4a5f in __ast_devstate_changed_literal (state=AST_DEVICE_UNKNOWN, buf=0x55740d0 "SIP/sv0071ivr-04410470", norecurse=0) at devicestate.c:456
        device = 0x55740d0 "SIP/sv0071ivr-04410470"
        change = (struct state_change *) 0x444b3d0
        tmp = 0x0
        __PRETTY_FUNCTION__ = "__ast_devstate_changed_literal"
#5  0x080b4e7a in ast_device_state_changed_literal (dev=0x5574184 "SIP/sv0071ivr-04410470") at devicestate.c:490
        buf = 0x55740d0 "SIP/sv0071ivr-04410470"
#6  0x080960a1 in ast_channel_free (chan=0x4415dd8) at channel.c:1335
        fd = 73
        vardata = (struct ast_var_t *) 0x0
        f = (struct ast_frame *) 0x0
        headp = (struct varshead *) 0x44161e0
        datastore = (struct ast_datastore *) 0x0
        name = "SIP/sv0071ivr-04410470\000\b6\212\031\b4q\031\b¥\213\031\b\001\b\024\000\000\000\000\000À²\001\000{\006\206HÀ²\001\000,\000\000\000Ø]A\004 AW\005 AW\005\000\000\000\000\204\227N\005"
        __PRETTY_FUNCTION__ = "ast_channel_free"
#7  0x08096ff6 in ast_hangup (chan=0x4415dd8) at channel.c:1639
        res = 0
        cdr = (struct ast_cdr *) 0x4416790
        __PRETTY_FUNCTION__ = "ast_hangup"
#8  0x054d9658 in hanguptree (outgoing=0x440fd70, exception=0x0, answered_elsewhere=0) at app_dial.c:347
        oo = (struct chanlist *) 0x440d040
        __PRETTY_FUNCTION__ = "hanguptree"
#9  0x054e2976 in dial_exec_full (chan=0x440d040, data=0x55770d8, peerflags=0x5574ddc, continue_exec=0x0) at app_dial.c:1937
        res = 0
        rest = 0x0
        cur = 0x0
        outgoing = (struct chanlist *) 0x440fd70
        peer = (struct ast_channel *) 0x0
        to = 0
        num = {chan = 0x440d040, busy = 0, congestion = 0, nochan = 0}
        cause = 0
        numsubst = "sv0071ivr\000\020\004\034ì@\004\fz\030\004HLW\005AÄ\025\b\001\000\000\000(\b\000\0008LW\005ô_\027\004Ø\220W\005\220\233W\0051e\030\004æî\020\004HÓ\034\b\220\233W\0051e\030\004)&\000\000HÓ\034\bä\223\032\b1e\030\004Å\230\030\004\220\233W\005\fz\030\004\230LW\005!¨\025\b\001\000\000\000z¿\025\b1e\030\004ô_\027\004Ø\220W\005\220\233W\0051e\030\004æî\020\004\034ì@\004\fz\030\0041e\030\004)&\000\000\001\000\000\000(\b\000\0001e\030\004)&\000\000Ø\220W\005\fz\030\0041e\030\004)&\000\000\001\000\000\000\fz\030\0041e\030\004"...
        cidname = '\0' <repeats 79 times>
        config = {features_caller = {flags = 0}, features_callee = {flags = 0}, start_time = {tv_sec = 0, tv_usec = 0}, feature_timer = 0, timelimit = 0, play_warning = 0, warning_freq = 0,
  warning_sound = 0x0, end_sound = 0x0, start_sound = 0x0, firstpass = 0, flags = 0}
        calldurationlimit = 0
        dtmfcalled = 0x0
        dtmfcalling = 0x0
        pa = {sentringing = 0, privdb_val = 0, privcid = '\0' <repeats 255 times>, privintro = '\0' <repeats 1023 times>, status = "NOANSWER\000GS", '\0' <repeats 244 times>}
        sentringing = 0
        moh = 0
        outbound_group = 0x0
        result = 0
        start_time = 1216743030
        parse = 0x55742e0 "SIP"
        opermode = 0
        args = {argc = 2, argv = 0x5574420, peers = 0x55742e0 "SIP", timeout = 0x55742ee "5", options = 0x0, url = 0x0}
        opts = {flags = 0}
        opt_args = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}
        datastore = (struct ast_datastore *) 0x440fe38
---Type <return> to continue, or q <return> to quit---
        ds_caller_features = (struct ast_datastore *) 0x440fbc8
        ds_callee_features = (struct ast_datastore *) 0x4418898
        caller_features = (struct ast_dial_features *) 0x440fc90
        fulldial = 0
        num_dialed = 1
        __PRETTY_FUNCTION__ = "dial_exec_full"
#10 0x054e32fe in dial_exec (chan=0x440d040, data=0x55770d8) at app_dial.c:1958
        peerflags = {flags = 0}
#11 0x08100498 in pbx_exec (c=0x440d040, app=0x43f3ba0, data=0x55770d8) at pbx.c:745
        res = -16121856
        u = (struct ast_module_user *) 0x440fb08
        saved_c_appl = 0x0
        saved_c_data = 0x0
#12 0x0810784a in pbx_extension_helper (c=0x440d040, con=0x0, context=0x440d284 "from-iax", exten=0x440d2d4 "6136274820", priority=1, label=0x0, callerid=0x440d950 "6137959112", action=E_SPAWN,
    found=0x5579228, combined_find_spawn=1) at pbx.c:2904
        e = (struct ast_exten *) 0x42f57b0
        app = (struct ast_app *) 0x43f3ba0
        res = 0
        q = {incstack = {0x0 <repeats 128 times>}, stacklen = 0, status = 5, swo = 0x0, data = 0x0, foundcontext = 0x440d284 "from-iax"}
        passdata = "SIP/sv0071ivr,5", '\0' <repeats 8097 times>, "1e\030\004", '\0' <repeats 12 times>, "1e\030\004)&\000\000\000\000\000\000\000\000\000\0001e\030\004)&\000\000\000\000\000\000\fz\030\004\000\000\000\000)&\000\000\001\000\000\000\fz\030\004\000\000\000\000ô_\027\004\001\000\000\000\220\233W\005"
        matching_action = 0
        __PRETTY_FUNCTION__ = "pbx_extension_helper"
#13 0x081094e1 in ast_spawn_extension (c=0x440d040, context=0x440d284 "from-iax", exten=0x440d2d4 "6136274820", priority=1, callerid=0x440d950 "6137959112", found=0x5579228, combined_find_spawn=1)
    at pbx.c:3395
No locals.
#14 0x08109d88 in __ast_pbx_run (c=0x440d040) at pbx.c:3494
        dst_exten = ")&\000\000\2305\031\by\000\000\0001e\030\004)&\000\000\000\212\034\b\fz\030\004X\222W\005)&\000\000\001\000\000\000\fz\030\004°\000\000\000ô_\027\004\001\000\000\000\220\233W\005x\222W\005ô_\027\004\000\000\000\000\220\233W\005\210\222W\005æî\020\004\000\212\034\b\220\233W\005Ø\222W\005pý\a\b\000\212\034\bá6\031\bØ\222W\005\206ù\a\b\000\212\034\bá6\031\bØ\222W\005!¨\025\b\001\000\000\000\002\021\000\000@/\0008Â", '\0' <repeats 19 times>, "ô?\031\004\000\000\000\000\030\223W\005e\000\b\b\2305\031\by\000\000\000\2108\031\b!M\002\004\000\212\034\b\020ä@\0041e\030\004\000"...
        pos = 0
        digit = 0
        found = 1
        res = 0
        autoloopflag = 0
        error = 0
        __PRETTY_FUNCTION__ = "__ast_pbx_run"
#15 0x0810b2a3 in pbx_thread (data=0x440d040) at pbx.c:3760
        c = (struct ast_channel *) 0x440d040
#16 0x0815ca4d in dummy_start (data=0x440e0e0) at utils.c:872
        __cancel_buf = {__cancel_jmp_buf = {{__cancel_jmp_buf = {68763636, 0, 89627536, 89625560, -1155087884, 1066559470}, __mask_was_saved = 0}}, __pad = {0x5579490, 0x0, 0x0, 0x0}}
        __cancel_routine = (void (*)(void *)) 0x8075009 <ast_unregister_thread>
        __cancel_arg = (void *) 0x5579b90
        not_first_call = 0
        ret = (void *) 0x0
        a = {start_routine = 0x810b28c <pbx_thread>, data = 0x440d040, name = 0x440e1a0 "pbx_thread", ' ' <repeats 11 times>, "started at [ 3781] pbx.c ast_pbx_start()"}
        lock_info = (struct thr_lock_info *) 0x440e410
        mutex_attr = {__size = "\001\000\000", __align = 1}
        __PRETTY_FUNCTION__ = "dummy_start"
#17 0x041844fb in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
No symbol table info available.
#18 0x04101e5e in clone () from /lib/tls/i686/cmov/libc.so.6
No symbol table info available.