(gdb) bt
#0  0x00e85416 in __kernel_vsyscall ()
#1  0x00757871 in raise () from /lib/libc.so.6
#2  0x0075914a in abort () from /lib/libc.so.6
#3  0x00750b8b in __assert_fail_base () from /lib/libc.so.6
#4  0x00750c46 in __assert_fail () from /lib/libc.so.6
#5  0x0068bb62 in pjsip_transport_get_type_from_name (name=0xb40aad78) at ../src/pjsip/sip_transport.c:299
#6  0x00d0a953 in sip_dialog_create_from (pool=0xb4ac8af8, from=0xb435de90, user=0xb435dccc "asterisk", domain=0x829ecc2 "", target=0xb435de88, selector=0xb435de78) at res_pjsip.c:2463
#7  0x00d0d036 in ast_sip_create_dialog_uac (endpoint=0xad000d4, uri=0xb435e044 "sip:204@10.0.0.10:54255;transport=LS;ob", request_user=0x0) at res_pjsip.c:2642
#8  0x00ce8b56 in ast_sip_session_create_outgoing (endpoint=0xad000d4, contact=0x0, location=<value optimized out>, request_user=0x0, req_caps=0xb40aab34) at res_pjsip_session.c:1712
#9  0x093dc2ae in request (obj=0xb43cf9a0) at chan_pjsip.c:1911
#10 0x00d08e9d in sync_task (data=0xb43cf8fc) at res_pjsip.c:3626
#11 0x082004ac in ast_taskprocessor_execute (tps=0xa8acaf4) at taskprocessor.c:850
#12 0x08208c55 in execute_tasks (data=0xa8acaf4) at threadpool.c:1320
#13 0x082004ac in ast_taskprocessor_execute (tps=0xa8aca24) at taskprocessor.c:850
#14 0x0820705d in threadpool_execute (pool=0xa8d4c2c) at threadpool.c:351
#15 0x082085c1 in worker_active (worker=0xb401a5dc) at threadpool.c:1103
#16 0x08208381 in worker_start (arg=0xb401a5dc) at threadpool.c:1023
#17 0x08212efa in dummy_start (data=0xb725c320) at utils.c:1235
#18 0x00156bc9 in start_thread () from /lib/libpthread.so.0
#19 0x0080fc9e in clone () from /lib/libc.so.6
(gdb)