#0  0x08097913 in ast_rtp_destroy (rtp=0x9f67550) at rtp.c:1819
1819            if (rtp->rtcp->schedid > 0) {
(gdb) bt full
#0  0x08097913 in ast_rtp_destroy (rtp=0x9f67550) at rtp.c:1819
No locals.
#1  0x05662994 in __sip_destroy (p=0xa3ee748, lockowner=1) at chan_sip.c:2787
        cur = (struct sip_pvt *) 0x56ac8e8
        prev = (struct sip_pvt *) 0x0
        cp = (struct sip_pkt *) 0x85a5108
        __PRETTY_FUNCTION__ = "__sip_destroy"
#2  0x0566397c in sip_destroy (p=0xa3ee748) at chan_sip.c:2982
        __PRETTY_FUNCTION__ = "sip_destroy"
#3  0x0569551c in sip_request_call (type=0x85a5350 "SIP", format=4, data=0x85a5d70, cause=0x85a5dc4) at chan_sip.c:14689
        oldformat = 4
        p = (struct sip_pvt *) 0xa3ee748
        tmpc = (struct ast_channel *) 0x0
        ext = 0x0
        host = 0x85a5180 "5644"
        tmp = "5644", '\0' <repeats 104 times>, "$_l", '\0' <repeats 13 times>, "$_l", '\0' <repeats 128 times>
        dest = 0x85a5d70 "5644"
        __PRETTY_FUNCTION__ = "sip_request_call"
#4  0x08068b46 in ast_request (type=0x85a5350 "SIP", format=4, data=0x85a5d70, cause=0x85a5dc4) at channel.c:2656
        chan = (struct chanlist *) 0x9d780a8
        c = (struct ast_channel *) 0x0
        capabilities = 4
        fmt = 4
        res = 0
        foo = 7138019
        videoformat = 0
        __PRETTY_FUNCTION__ = "ast_request"
#5  0x031effe4 in dial_exec_full (chan=0xa3ee198, data=0x85aa000, peerflags=0x85a5e10) at app_dial.c:1067
        tmp = (struct dial_localuser *) 0xa50ad20
        number = 0x85a5354 "5644"
        tech = 0x85a5350 "SIP"
        res = -1
        u = (struct localuser *) 0xa6591b8
        rest = 0x0
        cur = 0x85a5350 "SIP"
        outgoing = (struct dial_localuser *) 0x0
        peer = (struct ast_channel *) 0x0
        to = 1819042092
        numbusy = 0
        numcongestion = 0
        numnochan = 0
        cause = 0
        numsubst = "5644", '\0' <repeats 75 times>
        cidname = '\0' <repeats 79 times>
        privdb_val = 0
        calldurationlimit = 0
        timelimit = 0
        play_warning = 0
        warning_freq = 0
        warning_sound = 0x0
        end_sound = 0x0
        start_sound = 0x0
        dtmfcalled = 0x0
        dtmfcalling = 0x0
        status = '\0' <repeats 255 times>
        play_to_caller = 0
        play_to_callee = 0
        sentringing = 0
        moh = 0
---Type <return> to continue, or q <return> to quit---
        outbound_group = 0x0
        result = 0
        start_time = 0
        privintro = '\0' <repeats 1023 times>
        privcid = '\0' <repeats 255 times>
        parse = 0x85a5350 "SIP"
        opermode = 0
        args = {argc = 2, argv = 0x85a56a4, peers = 0x85a5350 "SIP", timeout = 0x85a5359 "120", options = 0x0, url = 0x0}
        opts = {flags = 0}
        opt_args = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}
        __PRETTY_FUNCTION__ = "dial_exec_full"
#6  0x031f2655 in dial_exec (chan=0xa3ee198, data=0x85aa000) at app_dial.c:1638
        peerflags = {flags = 0}
#7  0x08072060 in pbx_exec (c=0xa3ee198, app=0x9dc8d28, data=0x85aa000) at pbx.c:505
        res = 165449000
        saved_c_appl = 0x0
        saved_c_data = 0x0
#8  0x08074bd8 in pbx_extension_helper (c=0xa3ee198, con=0x0, context=0xa3ee318 "from-collections", exten=0xa3ee368 "5644", priority=2, label=0x0,
    callerid=0xa065b48 "Extension5632", action=E_SPAWN) at pbx.c:1701
        e = (struct ast_exten *) 0xa1303b0
        app = (struct ast_app *) 0x9dc8d28
        res = 0
        q = {incstack = {0xa159924 "from-collections", 0xa1b1a8c "from-sip", 0x0 <repeats 126 times>}, stacklen = 2, status = 5, swo = 0x0,
  data = 0x0, foundcontext = 0xa0083ab "common"}
        passdata = "SIP/5644|120", '\0' <repeats 8179 times>
        matching_action = 0
        __PRETTY_FUNCTION__ = "pbx_extension_helper"
#9  0x08075c87 in ast_spawn_extension (c=0xa3ee198, context=0xa3ee318 "from-collections", exten=0xa3ee368 "5644", priority=2,
    callerid=0xa065b48 "Extension5632") at pbx.c:2155
No locals.
#10 0x08076175 in __ast_pbx_run (c=0xa3ee198) at pbx.c:2255
        dst_exten = "ÀÃZ\bÄÃZ\bìÃZ\b", '\0' <repeats 36 times>, "ðÃZ\bwn\a\b\000\000\000\000\000\000\000\000ô\017\202\000à~\201\000\000\000\000\000ÄUl\000\000\000\000\000\000\000\000\000\214ÃZ\b\000\000\000\000\220ÃZ\b\224ÃZ\b\000\000\000\000 ÃZ\b\230ÃZ\b\234ÃZ\b¤ÃZ\b\000\000\000\000\000\000\000\000(¸x\000ÄUl\000\020\000\000\000\000\000\000\0000Ll\000\000\000\000\000\f\000\000\000ô\237x\000\f\000\000\000 ¸x\000\230ÃZ\bö|l\000 ¸x\000\f\000\000\000\030\000\000\000H\001\001\000\f\000\000\000¸\236\213\nô\017\202\000\000\000\000\000°ËZ\bÈÃZ\b\202¢\v\b\001\000"...
        pos = 0
        digit = 0
        found = 1
        res = 0
        autoloopflag = 0
        error = 0
        __PRETTY_FUNCTION__ = "__ast_pbx_run"
#11 0x08076e66 in pbx_thread (data=0xa3ee198) at pbx.c:2466
        c = (struct ast_channel *) 0xa3ee198
#12 0x080badf5 in dummy_start (data=0xa73f2a8) at utils.c:536
        _buffer = {__routine = 0x80a67bd <ast_unregister_thread>, __arg = 0x85acbb0, __canceltype = -1355398104, __prev = 0x0}
        ret = (void *) 0x788664
        a = {start_routine = 0x8076e4f <pbx_thread>, data = 0xa3ee198,
  name = 0xa753f28 "pbx_thread", ' ' <repeats 11 times>, "started at [ 2490] pbx.c ast_pbx_start()"}
#13 0x00817341 in start_thread () from /lib/tls/libpthread.so.0
No symbol table info available.
#14 0x0072b6fe in clone () from /lib/tls/libc.so.6
No symbol table info available.