#0  0x00007f4f544e57a0 in asterisk_rtp_engine () from /usr/lib/asterisk/modules/res_rtp_asterisk.so
No symbol table info available.
#1  0x0000000000452a30 in internal_ao2_callback (c=0xf54b1a8, flags=96, cb_fn=0xf97ddf0, arg=0x7f4f2d38b8b4, data=0x0, type=DEFAULT, tag=0x0, file=0x0, line=0, func=0x0) at astobj2.c:1059
        i = 0
        start = 239252016
        last = 0
        orig_lock = 5906325
        ret = 0x0
        cb_default = 0xf97ddf0
        cb_withdata = 0
        multi_container = 0x0
        multi_iterator = 0x0
        __PRETTY_FUNCTION__ = "internal_ao2_callback"
#2  0x00000000004530ac in __ao2_callback (c=0xf54b1a8, flags=96, cb_fn=0xf97ddf0, arg=0x7f4f2d38b8b4) at astobj2.c:1206
No locals.
#3  0x0000000000453205 in __ao2_find (c=0xf54b1a8, arg=0x7f4f2d38b8b4, flags=96) at astobj2.c:1237
        arged = 0x7f4f2d38b8b4
#4  0x000000000055ba88 in ast_rtp_codecs_find_payload_code (codecs=0xf250c60, code=0) at rtp_engine.c:771
        type = 0xf250a98
        res = -1
#5  0x00007f4f542de55e in bridge_p2p_rtp_write (len=172, rtpheader=0xe42b3e8, instance=0xe5a91d8, hdrlen=<optimized out>) at res_rtp_asterisk.c:3447
        rtp = 0xe42b230
        bridged = 0xf54be10
        res = 0
        payload = 0
        mark = 0
        reconstruct = -2147424592
        ice = <optimized out>
        bridged_payload = 0
        hdrlen = 12
        instance1 = 0xf250a98
        payload_type = {asterisk_format = 1, format = {id = AST_FORMAT_ULAW, fattr = {format_attr = {0 <repeats 64 times>}, rtp_marker_bit = 0 '\000'}}, rtp_code = 0, payload = 0}
        remote_address = {ss = {ss_family = 0, __ss_align = 0, __ss_padding = '\000' <repeats 111 times>}, len = 0}
#6  ast_rtp_read (instance=0xe5a91d8, rtcp=<optimized out>) at res_rtp_asterisk.c:3639
        rtp = 0xe42b230
        addr = {ss = {ss_family = 2, __ss_align = 0, __ss_padding = '\000' <repeats 111 times>}, len = 16}
        res = <optimized out>
        hdrlen = 12
        version = 2
        payloadtype = <optimized out>
        padding = <optimized out>
        mark = <optimized out>
        ext = <optimized out>
        cc = <optimized out>
        prev_seqno = <optimized out>
        rtpheader = 0xe42b3e8
        seqno = 2147542704
        ssrc = <optimized out>
        timestamp = <optimized out>
        payload = {asterisk_format = 1, format = {id = AST_FORMAT_ULAW, fattr = {format_attr = {0 <repeats 64 times>}, rtp_marker_bit = 0 '\000'}}, rtp_code = 0, payload = 0}
        remote_address = {ss = {ss_family = 2, __ss_align = 0, __ss_padding = '\000' <repeats 111 times>}, len = 16}
        frames = <optimized out>
        __PRETTY_FUNCTION__ = "ast_rtp_read"
#7  0x000000000055a583 in ast_rtp_instance_read (instance=0xe5a91d8, rtcp=0) at rtp_engine.c:314
No locals.
#8  0x00007f4f4ad8d9cb in sip_rtp_read (ast=0xedc73f8, p=0xe036508, faxdetect=0x7f4f2d38c0bc) at chan_sip.c:8332
        f = 0x1048
        __PRETTY_FUNCTION__ = "sip_rtp_read"
#9  0x00007f4f4ad8e174 in sip_read (ast=0xedc73f8) at chan_sip.c:8429
        fr = 0xedc73f8
        p = 0xe036508
        faxdetected = 0
        __PRETTY_FUNCTION__ = "sip_read"
#10 0x0000000000481439 in __ast_read (chan=0xedc73f8, dropaudio=0) at channel.c:4010
        f = 0x0
        prestate = 6
        cause = 0
        __PRETTY_FUNCTION__ = "__ast_read"
#11 0x00000000004832aa in ast_read (chan=0xedc73f8) at channel.c:4364
No locals.
#12 0x000000000047ac4b in ast_safe_sleep_conditional (chan=0xedc73f8, timeout_ms=1800000, cond=0, data=0x0) at channel.c:1702
        dup_f = 0x0
        f = 0xf04c530
        silgen = 0x0
        res = 0
        start = {tv_sec = 1392369911, tv_usec = 397071}
        ms = 1766904
        deferred_frames = {first = 0x0, last = 0x0}
        __PRETTY_FUNCTION__ = "ast_safe_sleep_conditional"
#13 0x000000000047ae0e in ast_safe_sleep (chan=0xedc73f8, ms=1800000) at channel.c:1746
No locals.
#14 0x0000000000553e91 in pbx_builtin_wait (chan=0xedc73f8, data=0x7f4f2d38cae0 "1800") at pbx.c:11288
        ms = 1800000
#15 0x0000000000533c96 in pbx_exec (c=0xedc73f8, app=0x7f4f5c64ec90, data=0x7f4f2d38cae0 "1800") at pbx.c:1622
        res = 0
        u = 0x0
        saved_c_appl = 0x0
        saved_c_data = 0x0
        __PRETTY_FUNCTION__ = "pbx_exec"
#16 0x000000000053e876 in pbx_extension_helper (c=0xedc73f8, con=0x0, context=0xedc8248 "agent-callback", exten=0xedc8298 "s", priority=3, label=0x0, callerid=0xe783f30 "+331XXXXXXXX", action=E_SPAWN, found=0x7f4f2d390bcc, combined_find_spawn=1) at pbx.c:4922
        e = 0xe015910
        app = 0x7f4f5c64ec90
        res = 0
        q = {incstack = {0x0 <repeats 128 times>}, stacklen = 0, status = 5, swo = 0x0, data = 0x0, foundcontext = 0xedc8248 "agent-callback"}
        passdata = "1800\000m<SNIP>"
        matching_action = 0
        __PRETTY_FUNCTION__ = "pbx_extension_helper"
#17 0x0000000000541d15 in ast_spawn_extension (c=0xedc73f8, context=0xedc8248 "agent-callback", exten=0xedc8298 "s", priority=3, callerid=0xe783f30 "+331XXXXXXXX", found=0x7f4f2d390bcc, combined_find_spawn=1) at pbx.c:6038
No locals.
#18 0x0000000000543410 in __ast_pbx_run (c=0xedc73f8, args=0x0) at pbx.c:6513
        digit = 0
        invalid = 0
        timeout = 0
        dst_exten = "\000M\330\001\000\000\000\000 L\330\001\000\000\000\000h\037Q\000\000\000\000\000P\302P\000\000\000\000\000TVD\000\000\000\000\000,KZ\000\000\000\000\000P\353-cO\177\000\000\355\240-dO\177\000\000\000\000\000\000\000\000\000\000\225\037Z\000\000\000\000\000H\020\000\000\000\000\000\000\200$\203\000\000\000\000\000@M\330\001\000\000\000\000\220\277N\016\000\000\000\000\060\r9-O\177\000\000\361AZ\000\000\000\000\000@M\330\001\000\000\000\000\260r\202\000\000\000\000\000`NXd\000\000\000\000\220\277N\016\000\000\000\000\300\r9-O\177\000\000\246\274P\000\000\000\000\000\300\r9-O\177\000\000\000\321\363-O\177\000\000\300\031\071-O\177\000\000@\220zdO\177\000\000\003\000\000\000\000\000\000\000G,[\000\000\000\000\000\260r\202\000\000\000\000\000\000"...
        pos = 0
        found = 1
        res = 0
        autoloopflag = 0
        error = 0
        pbx = 0xf6efac0
        callid = 0x0
        __PRETTY_FUNCTION__ = "__ast_pbx_run"
#19 0x0000000000544de7 in pbx_thread (data=0xedc73f8) at pbx.c:6843
        c = 0xedc73f8
#20 0x00000000005a4ba5 in dummy_start (data=0xf6efac0) at utils.c:1162
        __cancel_buf = {__cancel_jmp_buf = {{__cancel_jmp_buf = {0, -8403220421287789065, 139978050097408, 139978037860800, 139978964897856, 3, -8403220421317149193, 8502683164617817591}, __mask_was_saved = 0}}, __pad = {0x7f4f2d390f80, 0x0, 0x7f4f6457f848, 
            0x7f4f6457f850}}
        __cancel_routine = 0x4456a8 <ast_unregister_thread>
        __cancel_arg = 0x7f4f2d391700
        __not_first_call = 0
        ret = 0x7f4f64584e60
        a = {start_routine = 0x544dc2 <pbx_thread>, data = 0xedc73f8, name = 0xede6d50 "pbx_thread", ' ' <repeats 11 times>, "started at [ 6869] pbx.c ast_pbx_start()"}
        lock_info = 0xe4ebf90
        mutex_attr = {__size = "\001\000\000", __align = 1}
#21 0x00007f4f632deb50 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#22 0x00007f4f642da0ed in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#23 0x0000000000000000 in ?? ()
No symbol table info available