(gdb) bt
#0  0x0807a62e in ast_channel_alloc (needqueue=0, state=1, cid_num=0x0, cid_name=0x0, acctcode=0x9101f68 "Zap/pseudo-731522945", 
    exten=0x40004 <Address 0x40004 out of bounds>, context=0x806650 "8'ú\b*", amaflag=327678, 
    name_fmt=0xfff0fff8 <Address 0xfff0fff8 out of bounds>) at strings.h:35
#1  0xb74560a7 in zt_new (i=0x90fb910, state=1, startpbx=0, index=0, law=0, transfercapability=0) at chan_zap.c:5173
#2  0xb7468fce in zt_request (type=0xb707c848 "zap", format=64, data=0xb707c858, cause=0xb6c03df8) at chan_zap.c:7815
#3  0x0807d5de in ast_request (type=0xb707c848 "zap", format=64, data=0x90fca88, cause=0x90fca88) at channel.c:3134
#4  0xb706f034 in build_conf (confno=0xb6c03ed0 "1101", pin=0xb707caf4 "", pinadmin=0xb707caf4 "", make=1, dynamic=0, refcount=1)
    at app_meetme.c:756
#5  0xb7073f5f in find_conf (chan=0x90c6b90, confno=0xb6c04120 "1101", make=1, dynamic=0, dynamic_pin=0xb6c040d0 "", 
    pin_buf_len=80, refcount=1, confflags=0xb6c04068) at strings.h:34
#6  0xb70747be in conf_exec (chan=0x90c6b90, data=0xb6c044fc) at app_meetme.c:2622
#7  0x080bddef in pbx_exec (c=0x90c6b90, app=0x90561b0, data=0xb6c044fc) at pbx.c:532
#8  0xb7d3c3f1 in handle_exec (chan=0x90fca88, agi=0x90fca88, argc=3, argv=0xb6c042f0) at res_agi.c:1116
#9  0xb7d3e798 in agi_exec_full (chan=0x90c6b90, data=Variable "data" is not available.
) at res_agi.c:1812
#10 0x080c8b01 in pbx_extension_helper (c=0x90c6b90, con=Variable "con" is not available.
) at pbx.c:532
#11 0x080c9e4f in __ast_pbx_run (c=0x90c6b90) at pbx.c:2288
#12 0x080cbd6e in pbx_thread (data=0x90fca88) at pbx.c:2601
#13 0x080f8915 in dummy_start (data=0x0) at utils.c:545
#14 0xb7fa0ce1 in pthread_start_thread () from /lib/i686/libpthread.so.0
#15 0xb7f13d3a in clone () from /lib/i686/libc.so.6
(gdb) bt full
#0  0x0807a62e in ast_channel_alloc (needqueue=0, state=1, cid_num=0x0, cid_name=0x0, acctcode=0x9101f68 "Zap/pseudo-731522945", 
    exten=0x40004 <Address 0x40004 out of bounds>, context=0x806650 "8'ú\b*", amaflag=327678, 
    name_fmt=0xfff0fff8 <Address 0xfff0fff8 out of bounds>) at strings.h:35
        __zz__ = Variable "__zz__" is not available.
(gdb) q