(gdb) where
#0  0x00182cab in _int_malloc () from /lib/tls/libc.so.6
#1  0x00181e9d in malloc () from /lib/tls/libc.so.6
#2  0x0032330c in __sip_reliable_xmit (p=0x994bfc0, seqno=50606, resp=1,
    data=0x999daf0 "\n", len=487, fatal=0, sipmethod=1) at chan_sip.c:1158
#3  0x003141c2 in send_response (p=0x994bfc0, req=0x994bfc0, reliable=50606,
    seqno=161078000) at chan_sip.c:1364
#4  0x00333bb8 in check_auth (p=0x994bfc0, req=0xb7463760,
    randdata=0x994c02c "1aa31526", randlen=80, username=0x993e1f8 "301",
    secret=0x993e26c "301", md5secret=0x993e2bc "", sipmethod=5,
    uri=0x999daf0 "\n", reliable=1, ignore=0) at chan_sip.c:942
#5  0x00336fac in check_user_full (p=0x994bfc0, req=0xb7463760, sipmethod=5,
    uri=0xb746397f "sip:7777@202.173.151.24", reliable=1, sin=0xb7463750,
    ignore=0, mailbox=0x0, mailboxlen=161078000) at chan_sip.c:6357
#6  0x0032ff9e in handle_request_invite (p=0x994bfc0, req=0xb7463760,
    debug=-1220135072, ignore=0, seqno=50606, sin=0x999daf0,
    recount=0x999daf0, e=0x999daf0 "\n") at chan_sip.c:6521
#7  0x00329b3c in handle_request (p=0x994bfc0, req=0xb7463760, sin=0xb7463750,
    recount=0x999daf0, nounlock=0x999daf0) at chan_sip.c:9959
#8  0x00327941 in sipsock_read (id=0x9937de0, fd=12, events=1, ignore=0x0)
    at chan_sip.c:10091
#9  0x08054afb in ast_io_wait (ioc=0x9934ac0, howlong=161078000) at io.c:272
#10 0x0031f53a in do_monitor (data=0x0) at chan_sip.c:10236
#11 0x00da7dec in start_thread () from /lib/tls/libpthread.so.0
---Type <return> to continue, or q <return> to quit---
#12 0x001eda2a in clone () from /lib/tls/libc.so.6
(gdb)
(gdb)
(gdb) bt full
#0  0x00182cab in _int_malloc () from /lib/tls/libc.so.6
No symbol table info available.
#1  0x00181e9d in malloc () from /lib/tls/libc.so.6
No symbol table info available.
#2  0x0032330c in __sip_reliable_xmit (p=0x994bfc0, seqno=50606, resp=1,
    data=0x999daf0 "\n", len=487, fatal=0, sipmethod=1) at chan_sip.c:1158
        pkt = (struct sip_pkt *) 0x246180
        siptimer_a = 1000
        res = 1
        iabuf = "\000\000\000\000 \214\000\000\020h\221\t\207\002\f\b"
#3  0x003141c2 in send_response (p=0x994bfc0, req=0x994bfc0, reliable=50606,
    seqno=161078000) at chan_sip.c:1364
        res = 2037146209
        iabuf = "192.168.1.50\000\201E·"
        tmp = {rlPart1 = 0x236f73 "", rlPart2 = 0x0, len = -1220184639,
  headers = 3425028, method = -1220185156, header = {
    0x34021c "Non-codec capabilities: us - %s, peer - %s, combined - %s\n",
    0xb7457e68 "È", 0xb7457584 "¨{E·Nf\025", 0x158f9c "\200½îúÿÿ",
    0xb745714c "so#", 0xb74573bc "0x4 (ulae®\023",
    0xb74571bc "0x1 (telephone-event)", 0xb7456fbc "0x8 (alaw)",
    0x16f6fb "\201Ã\235a\r", 0x0,
    0x20387830 <Address 0x20387830 out of bounds>,
    0x616c6128 <Address 0x616c6128 out of bounds>,
---Type <return> to continue, or q <return> to quit---
    0xb7002977 <Address 0xb7002977 out of bounds>,
    0x15664e "\213½´ûÿÿ\211ù)ñ9È\017\205\233óÿÿ\001\205Pûÿÿ\200?",
    0xb745760c "", 0x33c3ad "\n", 0x1 <Address 0x1 out of bounds>,
    0x17e4d2 "\213M\b\211A\024ë¦\215¶",
    0x81082e0 "Reliably Transmitting (no NAT) to 192.168.1.50:5060:\nSIP/2.0 407 Proxy Authentication Required\r\nVia: SIP/2.0/UDP 192.168.1.50;branch=z9hG4bK2f760e5b5b765026\r\nFrom: <sip:301@202.173.151.24;user=phone>;"...,
    0x33c392 "Found description format %s\n", 0x16f6fb "\201Ã\235a\r", 0x0,
    0xb74575d4 "", 0x158f9c "\200½îúÿÿ", 0xb745719c "®Ã3",
    0x15664e "\213½´ûÿÿ\211ù)ñ9È\017\205\233óÿÿ\001\205Pûÿÿ\200?",
    0xb745763c "", 0x33c3ad "\n",
    0x20640001 <Address 0x20640001 out of bounds>, 0x0 <repeats 12 times>,
    0xa <Address 0xa out of bounds>, 0x13c4 <Address 0x13c4 out of bounds>,
    0x0, 0x0, 0x0, 0xb74570d4 "", 0x0, 0x2 <Address 0x2 out of bounds>,
    0xb74576e4 "\001", 0xb7457504 "", 0x0, 0x33f89c "%s, port %d\n",
    0x3c <Address 0x3c out of bounds>,
    0xffffffff <Address 0xffffffff out of bounds>, 0x0, 0x0, 0x0, 0x0, 0x0,
    0x20750000 <Address 0x20750000 out of bounds>, 0x0, 0x0, 0x0}, lines = 0,
  line = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
    0xa <Address 0xa out of bounds>, 0x32 <Address 0x32 out of bounds>, 0x0,
    0x0, 0x0, 0x33f8a8 "", 0x0, 0x0, 0x0, 0xb7457584 "¨{E·Nf\025", 0x0,
    0x236f68 "%u.%u.%u.%u", 0xc <Address 0xc out of bounds>,
    0xffffffff <Address 0xffffffff out of bounds>, 0x0, 0x0, 0x0, 0x0, 0x0,
---Type <return> to continue, or q <return> to quit---
    0x0, 0x0, 0x0, 0xb7457140 "", 0x0, 0x0, 0xb74571a4 "", 0x0,
    0x1 <Address 0x1 out of bounds>, 0xb74577b4 "", 0xb74575d4 "", 0x0,
    0x33c3ab "%s\n", 0x29 <Address 0x29 out of bounds>,
    0xffffffff <Address 0xffffffff out of bounds>, 0x0, 0x0, 0x0, 0x236f73 "",
    0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1000000 "\225", 0x0, 0x0, 0x0, 0x0,
    0x0, 0x0, 0x0, 0x0, 0x0, 0x0},
  data = "\000\000\000\000®Ã3", '\0' <repeats 29 times>, "0x1 (telephone-event)", '\0' <repeats 47 times>, "e®\023\000}\234#\000\000\000\000\000\230X$\000TZ\000\000\000\000\000\000\230X$\000\220vE·!\000\000\000\224rE·#J\032\000\212\234#\000h[\221\t`rE·\204\033\016\bLsE·ô\213\027\000\212\234#\000\204\033\016\b\200sE·ÁuE·\000\000\000\000\000sE·`rE·\001\200­ûÁuE·ÁuE·\020\000\000\000\020\000\000\000Èa$\000\000\000\000\000´a$\000¸a$\000\233I\032\000\230X$\000\220vE·!\000\000\000 rE·"..., debug = 3384905}
        tmpmsg = '\0' <repeats 12 times>, "M\213\027\000\230X$\000ÁuE·û\001\000\000hoE·\016\000\000\000!\000\000\000\020\000\000\000\035\000\000\000\a\000\000\000ûö\026\000\000\000\000\000so#\000\000\000\000\000\230uE·Nf\025\000´uE·"
#4  0x00333bb8 in check_auth (p=0x994bfc0, req=0xb7463760,
    randdata=0x994c02c "1aa31526", randlen=80, username=0x993e1f8 "301",
    secret=0x993e26c "301", md5secret=0x993e2bc "", sipmethod=5,
    uri=0x999daf0 "\n", reliable=1, ignore=0) at chan_sip.c:942
        res = -1
        response = 0x340dfc "407 Proxy Authentication Required"
        reqheader = 0x999daf0 "\n"
---Type <return> to continue, or q <return> to quit---
        respheader = 0x33c57b "Proxy-Authenticate"
        authtoken = 0xc5ae <Address 0xc5ae out of bounds>
#5  0x00336fac in check_user_full (p=0x994bfc0, req=0xb7463760, sipmethod=5,
    uri=0xb746397f "sip:7777@202.173.151.24", reliable=1, sin=0xb7463750,
    ignore=0, mailbox=0x0, mailboxlen=161078000) at chan_sip.c:6357
        user = (struct sip_user *) 0x993e1f8
        peer = (struct sip_peer *) 0x178bf4
        of = 0x993e1f8 "301"
        from = "<sip:301\000202.173.151.24;user=phone\000;tag=0d93f9942798d7d8", '\0' <repeats 199 times>
        rpid = 0x993e1f8 "301"
        rpid_num = '\0' <repeats 49 times>
        iabuf = "\000\000\000\000\003\000\000\000\000\000\000\000\000\000\000"
        res = 0
        t = 0x999daf0 "\n"
        calleridname = '\0' <repeats 49 times>
        tmpvar = (struct ast_variable *) 0x796c6261
        v = (struct ast_variable *) 0x5
#6  0x0032ff9e in handle_request_invite (p=0x994bfc0, req=0xb7463760,
    debug=-1220135072, ignore=0, seqno=50606, sin=0x999daf0,
    recount=0x999daf0, e=0x999daf0 "\n") at chan_sip.c:6521
        res = 1
        c = (struct ast_channel *) 0x0
---Type <return> to continue, or q <return> to quit---
        gotdest = 0
        af = {frametype = 5, subclass = 0, datalen = 0, samples = 0,
  mallocd = 0, offset = 0, src = 0x0, data = 0x0, delivery = {tv_sec = 0,
    tv_usec = 0}, prev = 0x0, next = 0x0}
        supported = 0x999daf0 "\n"
        required = 0xb746397f "sip:7777@202.173.151.24"
        required_profile = 161078000
#7  0x00329b3c in handle_request (p=0x994bfc0, req=0xb7463760, sin=0xb7463750,
    recount=0x999daf0, nounlock=0x999daf0) at chan_sip.c:9959
        resp = {rlPart1 = 0x0, rlPart2 = 0x0, len = 0, headers = 0,
  method = 0, header = {0x0 <repeats 64 times>}, lines = 0, line = {
    0x0 <repeats 64 times>}, data = '\0' <repeats 4095 times>, debug = 0}
        cmd = 0xc5ae <Address 0xc5ae out of bounds>
        cseq = 0x796c6261 <Address 0x796c6261 out of bounds>
        from = 0x796c6261 <Address 0x796c6261 out of bounds>
        useragent = 0x796c6261 <Address 0x796c6261 out of bounds>
        seqno = 50606
        len = 5
        ignore = 0
        respid = 200
        res = 0
        iabuf = '\0' <repeats 15 times>
        e = 0xb746397f "sip:7777@202.173.151.24"
---Type <return> to continue, or q <return> to quit---
#8  0x00327941 in sipsock_read (id=0x9937de0, fd=12, events=1, ignore=0x0)
    at chan_sip.c:10091
        req = {rlPart1 = 0xb7463978 "INVITE",
  rlPart2 = 0xb746397f "sip:7777@202.173.151.24", len = 826, headers = 13,
  method = 5, header = {0xb7463978 "INVITE",
    0xb74639ab "Via: SIP/2.0/UDP 192.168.1.50;branch=z9hG4bK2f760e5b5b765026",
    0xb74639e9 "From: <sip:301@202.173.151.24;user=phone>;tag=0d93f9942798d7d8", 0xb7463a29 "To: <sip:7777@202.173.151.24;user=phone>",
    0xb7463a53 "Contact: <sip:301@192.168.1.50;user=phone>",
    0xb7463a7f "Supported: replaces, timer",
    0xb7463a9b "Call-ID: f58a7e2989588b50@192.168.1.50",
    0xb7463ac3 "CSeq: 50606 INVITE",
    0xb7463ad7 "User-Agent: Grandstream GXP2000 1.0.1.9",
    0xb7463b00 "Max-Forwards: 70",
    0xb7463b12 "Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE,UPDATE,PRACK", 0xb7463b61 "Content-Type: application/sdp",
    0xb7463b80 "Content-Length: 283", 0xb7463b95 "", 0x0 <repeats 50 times>},
  lines = 14, line = {0xb7463b97 "v=0",
    0xb7463b9c "o=301 8000 8000 IN IP4 192.168.1.50", 0xb7463bc1 "s=SIP Call",
    0xb7463bcd "c=IN IP4 192.168.1.50", 0xb7463be4 "t=0 0",
    0xb7463beb "m=audio 5004 RTP/AVP 3 4 18 8 101", 0xb7463c0e "a=sendrecv",
    0xb7463c1a "a=rtpmap:3 GSM/8000", 0xb7463c2f "a=rtpmap:4 G723/8000",
    0xb7463c45 "a=rtpmap:18 G729/8000", 0xb7463c5c "a=rtpmap:8 PCMA/8000",
---Type <return> to continue, or q <return> to quit---
    0xb7463c72 "a=ptime:10", 0xb7463c7e "a=rtpmap:101 telephone-event/8000",
    0xb7463ca1 "a=fmtp:101 0-11", 0xb7463cb2 "", 0x0 <repeats 49 times>},
  data = "INVITE\000sip:7777@202.173.151.24\000user=phone\000SIP/2.0\000\000Via: SIP/2.0/UDP 192.168.1.50;branch=z9hG4bK2f760e5b5b765026\000\000From: <sip:301@202.173.151.24;user=phone>;tag=0d93f9942798d7d8\000\000To: <sip:7777@202.173.1"..., debug = 1}
        sin = {sin_family = 2, sin_port = 50195, sin_addr = {
    s_addr = 838969536}, sin_zero = "\000\000\000\000\000\000\000"}
        p = (struct sip_pvt *) 0x994bfc0
        res = 161078000
        len = 16
        nounlock = 0
        recount = 0
        iabuf = "192.168.1.50\000\000\000"
#9  0x08054afb in ast_io_wait (ioc=0x9934ac0, howlong=161078000) at io.c:272
        res = 1
        x = 0
        origcnt = 1
#10 0x0031f53a in do_monitor (data=0x0) at chan_sip.c:10236
        res = 160647824
        sip = (struct sip_pvt *) 0x9934a90
        peer = (struct sip_peer *) 0x0
        t = 1125297216
---Type <return> to continue, or q <return> to quit---
        fastrestart = 0
        lastpeernum = -1
        curpeernum = 14
        reloading = 160647824
#11 0x00da7dec in start_thread () from /lib/tls/libpthread.so.0
No symbol table info available.
#12 0x001eda2a in clone () from /lib/tls/libc.so.6
No symbol table info available.
(gdb)
(gdb)