(gdb) bt
#0  0xb6e5a566 in gtalk_alloc (client=0x81c51f0, us=0x8188474 "google_account@gmail.com/Talk872BF0B9", them=0xb6d3ffe7 "google_account@gmail.com", sid=0x0) at chan_gtalk.c:842
#1  0xb6e5ce00 in gtalk_request (type=0xb6d40100 "gtalk", format=8, data=0xb6d40c78, cause=0xb6d40cc8) at chan_gtalk.c:1490
#2  0x0807eb1f in ast_request (type=0xb6d40100 "gtalk", format=8, data=0xb6d40c78, cause=0xb6d40cc8) at channel.c:2842
#3  0xb6fb01cd in dial_exec_full (chan=0x81d1490, data=0xb6d42fe8, peerflags=0xb6d40e54) at app_dial.c:1074
#4  0xb6fb2c2e in dial_exec (chan=0x81d1490, data=0xb6d42fe8) at app_dial.c:1645
#5  0x080ae435 in pbx_exec (c=0x81d1490, app=0x81bc5c0, data=0xb6d42fe8) at pbx.c:501
#6  0x080b1224 in pbx_extension_helper (c=0x81d1490, con=0x0, context=0x81d1610 "to-tiscali", exten=0x81d1660 "333", priority=1, label=0x0, callerid=0x81d8dc0 "zyxel1",
    action=E_SPAWN) at pbx.c:1701
#7  0x080b22e0 in ast_spawn_extension (c=0x81d1490, context=0x81d1610 "to-tiscali", exten=0x81d1660 "333", priority=1, callerid=0x81d8dc0 "zyxel1") at pbx.c:2155
#8  0x080b27b0 in __ast_pbx_run (c=0x81d1490) at pbx.c:2255
#9  0x080b34f7 in pbx_thread (data=0x81d1490) at pbx.c:2466
#10 0x080ea19c in dummy_start (data=0x81d8f00) at utils.c:538
#11 0xb7fa734b in start_thread () from /lib/libpthread.so.0
#12 0xb7dd465e in clone () from /lib/libc.so.6