Console output:
- Executing [1100@xyz:1] Set("SIP/xyz011101-081e0ac8", "TIMEOUT(absolute)=10800") in new stack
    -- Channel will hangup at 2008-09-17 19:21:49 UTC.
    -- Executing [1100@xyz:2] AGI("SIP/xyz011101-081e0ac8", "agi://devel.acecape.com") in new stack
    -- AGI Script Executing Application: (SetCallerPres) Options: (allowed_passed_screen)
    -- AGI Script Executing Application: (Set) Options: (CALLERID(name)=Unknown)
    -- AGI Script Executing Application: (Set) Options: (CALLERID(num)=Unknown)
    -- AGI Script Executing Application: (Dial) Options: (SIP/xyz110001|180|kK)
    -- Called xyz110001
    -- SIP/xyz110001-081e7108 is ringing
    -- SIP/xyz110001-081e7108 answered SIP/xyz011101-081e0ac8
    -- Started music on hold, class 'default', on channel 'SIP/xyz110001-081e7108'
  == Parked SIP/xyz110001-081e7108 on 701@parkedcalls. Will timeout back to extension [xyz] , 1 in 600 seconds
    -- <SIP/xyz011101-081e0ac8> Playing 'digits/7' (language 'en')
    -- <SIP/xyz011101-081e0ac8> Playing 'digits/0' (language 'en')
    -- <SIP/xyz011101-081e0ac8> Playing 'digits/1' (language 'en')
    -- Added extension '701' priority 1 to parkedcalls
    -- Executing [h@xyz:1] NoOp("SIP/xyz011101-081e0ac8", "v2 hangup extension. channel type=SIP") in new stack
    -- Executing [h@xyz:2] GotoIf("SIP/xyz011101-081e0ac8", "1?lines_out:+1") in new stack
    -- Goto (xyz,h,5)
    -- Executing [h@xyz:5] GotoIf("SIP/xyz011101-081e0ac8", "1?lines_done:+1") in new stack
    -- Goto (xyz,h,8)
    -- Executing [h@xyz:8] NoOp("SIP/xyz011101-081e0ac8", "") in new stack  
    -- Stopped music on hold on SIP/xyz110001-081e7108
webdevel*CLI>
Disconnected from Asterisk server
Executing last minute cleanups
Asterisk ending (0).

Backtrace:
(gdb) bt full
#0  0x002a2a6e in ?? ()
No symbol table info available.
#1  0x080836fe in __ast_read (chan=0x81e72e8, dropaudio=0) at channel.c:2111
        f = (struct ast_frame *) 0x0
        blah = 1
        prestate = 6
        count = 0
        __PRETTY_FUNCTION__ = "__ast_read"
#2  0x080849e4 in ast_read (chan=0x81e72e8) at channel.c:2381
No locals.
#3  0xb7b523f1 in do_parking_thread (ignore=0x0) at res_features.c:1915
        f = (struct ast_frame *) 0x81505e0
        chan = (struct ast_channel *) 0x81e72e8
        tms = 3041
        x = 0
        con = (struct ast_context *) 0x0
        pl = (struct parkeduser *) 0x0
        pt = (struct parkeduser *) 0x0
        ms = -1
        nrfds = {fds_bits = {0 <repeats 32 times>}}
        pu = (struct parkeduser *) 0x81f17d8
        max = -1
        nefds = {fds_bits = {0 <repeats 32 times>}}
        rfds = {fds_bits = {33554432, 0 <repeats 31 times>}}
---Type <return> to continue, or q <return> to quit---
        efds = {fds_bits = {0 <repeats 32 times>}}
        __PRETTY_FUNCTION__ = "do_parking_thread"
#4  0x080fe4bb in dummy_start (data=0x8189b38) at utils.c:912
        _buffer = {__routine = 0x8069889 <ast_unregister_thread>, __arg =
#0xb7b48bb0,
  __canceltype = 0, __prev = 0x0}
        ret = (void *) 0x0
        a = {start_routine = 0xb7b51bd5 <do_parking_thread+163>, data = 0x0,
  name = 0x8189858 "do_parking_thread    started at [ 2645] res_features.c
load_module()"}
#5  0xb7fa820e in start_thread () from /lib/tls/libpthread.so.0
No symbol table info available.
#6  0xb7f020de in clone () from /lib/tls/libc.so.6
No symbol table info available.
(gdb)