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<DIV><FONT face=Arial size=2>Hi everybody, I have a "one way audio"
problem. My enviroment is:</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>xx.xx.63.75/27 = SER<BR>xx.xx.63.68/27 = Natbox
(linux iptables masquerade)<BR>xx.xx.70.2/25 = STUN server<BR>xx.xx.63.78/27 =
PAP1 linksys AOR 2000<BR>10.1.1.233/24 = PAP2 linksys AOR 2001 (behind
NATbox with stun enable)</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I have no audio from PAP1 to PAP2 when the call is
made from PAP1 to PAP2, but when the call is made from PAP2 to PAP1 it works
correctly.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I see on the natbox that the RTP packet
is droped with unreachable cause (icmp messages).</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>This is the trace (ngrep) for the call from
PAP1 to PAP2 on external interface of the natbox, where I can see STUN packets
and the number udp port that the PAP willl be use (16444 to 16447).
</FONT></DIV>
<DIV><FONT face=Arial size=2>The problem is natbox use other port (1173). I
don't know if this problem is on natbox or stun server or PAP.</FONT></DIV>
<DIV><FONT face=Arial size=2>Can you helpme?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Thanks!!</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT><FONT face=Arial size=2> </DIV>
<DIV><BR>U xx.xx.63.75:5060 -> xx.xx.63.68:5060<BR> INVITE
sip:2001@xx.xx.63.68:5060 SIP/2.0..Record-Route:
<sip:xx.xx.63.75;ftag=d1ccd3db9e31eb1fo0;lr=on>..Via: SIP/2.0/UDP
<BR> xx.xx.63.75;branch=z9hG4bK52fb.41985863.0..Via: SIP/2.0/UDP
xx.xx.63.78:5060;branch=z9hG4bK-57b1577f..From: 2000 <sip:5<BR> <A
href="mailto:890000@xx.xx.63.75>;tag=d1ccd3db9e31eb1fo0..To">890000@xx.xx.63.75>;tag=d1ccd3db9e31eb1fo0..To</A>:
<sip:2001@xx.xx.63.75>..Call-ID: <A
href="mailto:d6e2df8b-5193d32f@xx.xx.63.78..CSeq">d6e2df8b-5193d32f@xx.xx.63.78..CSeq</A>:
101<BR> INVITE..Max-Forwards: 16..Contact: 2000
<sip:2000@xx.xx.63.78:5060>..Expires: 240..User-Agent:
Linksys/PAP2-2.0.10(L<BR> Sc)..Content-Length: 420..Allow: ACK, BYE,
CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER..Supported: x-sipura..Content-Type:
app<BR> lication/sdp....v=0..o=- 29375 29375 IN IP4 xx.xx.63.78..s=-..c=IN
IP4 xx.xx.63.78..t=0 0..m=audio 16472 RTP/AVP 18 0 2 4 8 9<BR> 6 97 98 100
101..a=rtpmap:18 G729a/8000..a=rtpmap:0 PCMU/8000..a=rtpmap:2
G726-32/8000..a=rtpmap:4 G723/8000..a=rtpmap:8 PCMA/8<BR> 000..a=rtpmap:96
G726-40/8000..a=rtpmap:97 G726-24/8000..a=rtpmap:98 G726-16/8000..a=rtpmap:100
NSE/8000..a=rtpmap:101 telephon<BR> e-event/8000..a=fmtp:101
0-15..a=ptime:30..a=sendrecv..
<BR>#<BR>U xx.xx.63.68:5060 -> xx.xx.63.75:5060<BR> SIP/2.0 100
Trying..To: <sip:2001@xx.xx.63.75>..From: 2000
<sip:2000@xx.xx.63.75>;tag=d1ccd3db9e31eb1fo0..Call-ID<BR> : <A
href="mailto:d6e2df8b-5193d32f@xx.xx.63.78..CSeq">d6e2df8b-5193d32f@xx.xx.63.78..CSeq</A>:
101 INVITE..Via: SIP/2.0/UDP xx.xx.63.75;branch=z9hG4bK52fb.41985863.0..Via:
SIP/2.0/U<BR> DP xx.xx.63.78:5060;branch=z9hG4bK-57b1577f..Record-Route:
<sip:xx.xx.63.75;ftag=d1ccd3db9e31eb1fo0;lr=on>..Server:
Linksys/P<BR> AP2-2.0.10(LSc)..Content-Length:
0....
<BR>#<BR>U xx.xx.63.68:5060 -> xx.xx.70.2:3478<BR>
.....*f..*f..*f..*f.
<BR>#<BR>U xx.xx.63.68:16444 -> xx.xx.70.2:3478<BR>
.....OB..OB..OB..OB.
<BR>#<BR>U xx.xx.63.68:16445 -> xx.xx.70.2:3478<BR>
....................
<BR>#<BR>U xx.xx.63.68:16446 -> xx.xx.70.2:3478<BR>
.......&...&...&...&
<BR>#<BR>U xx.xx.63.68:16447 -> xx.xx.70.2:3478<BR>
....#...#...#...#...
<BR>#<BR>U xx.xx.70.2:3478 -> xx.xx.63.68:16447<BR> <A
href="mailto:...$#...#...#...#.........@?.+?D.........+F..........+F">...$#...#...#...#.........@?.+?D.........+F..........+F</A>.
<BR>#<BR>U xx.xx.63.68:5060 -> xx.xx.70.2:3478<BR>
.....*f..*f..*f..*f.
<BR>#<BR>U xx.xx.63.68:16444 -> xx.xx.70.2:3478<BR>
.....OB..OB..OB..OB.
<BR>#<BR>U xx.xx.70.2:3478 -> xx.xx.63.68:5060<BR>
...$.*f..*f..*f..*f..........+?D.........+F..........+F.
<BR>#<BR>U xx.xx.63.68:16445 -> xx.xx.70.2:3478<BR>
....................
<BR>#<BR>U xx.xx.63.68:16446 -> xx.xx.70.2:3478<BR>
.......&...&...&...&
<BR>#<BR>U xx.xx.70.2:3478 -> xx.xx.63.68:16444<BR> <A
href="mailto:...$.OB..OB..OB..OB.......@<.+?D.........+F..........+F">...$.OB..OB..OB..OB.......@<.+?D.........+F..........+F</A>.
<BR>#<BR>U xx.xx.70.2:3478 -> xx.xx.63.68:16446<BR> <A
href="mailto:...$...&...&...&...&......@>.+?D.........+F..........+F">...$...&...&...&...&......@>.+?D.........+F..........+F</A>.
<BR>#<BR>U xx.xx.63.68:5060 -> xx.xx.63.75:5060<BR> SIP/2.0 180
Ringing..To: <sip:2001@xx.xx.63.75>;tag=156298945b7d27i0..From: 2000
<sip:2000@xx.xx.63.75>;tag=d1ccd<BR> 3db9e31eb1fo0..Call-ID: <A
href="mailto:d6e2df8b-5193d32f@xx.xx.63.78..CSeq">d6e2df8b-5193d32f@xx.xx.63.78..CSeq</A>:
101 INVITE..Via: SIP/2.0/UDP xx.xx.63.75;branch=z9hG4bK52fb.4198<BR>
5863.0..Via: SIP/2.0/UDP xx.xx.63.78:5060;branch=z9hG4bK-57b1577f..Record-Route:
<sip:xx.xx.63.75;ftag=d1ccd3db9e31eb1fo0;lr=<BR> on>..Server:
Linksys/PAP2-2.0.10(LSc)..Content-Length:
0....
<BR>#<BR>U xx.xx.70.2:3478 -> xx.xx.63.68:16444<BR> <A
href="mailto:...$.OB..OB..OB..OB.......@<.+?D.........+F..........+F">...$.OB..OB..OB..OB.......@<.+?D.........+F..........+F</A>.
<BR>#<BR>U xx.xx.63.68:5060 -> xx.xx.63.75:5060<BR> SIP/2.0 200 OK..To:
<sip:2001@xx.xx.63.75>;tag=156298945b7d27i0..From: 2000
<sip:2000@xx.xx.63.75>;tag=d1ccd3db9e<BR> 31eb1fo0..Call-ID: <A
href="mailto:d6e2df8b-5193d32f@xx.xx.63.78..CSeq">d6e2df8b-5193d32f@xx.xx.63.78..CSeq</A>:
101 INVITE..Via: SIP/2.0/UDP xx.xx.63.75;branch=z9hG4bK52fb.41985863.<BR>
0..Via: SIP/2.0/UDP xx.xx.63.78:5060;branch=z9hG4bK-57b1577f..Record-Route:
<sip:xx.xx.63.75;ftag=d1ccd3db9e31eb1fo0;lr=on>..<BR> Contact: 2001
<sip:2001@xx.xx.63.68:5060>..Server:
Linksys/PAP2-2.0.10(LSc)..Content-Length: 236..Allow: ACK, BYE, CANCE<BR>
L, INFO, INVITE, NOTIFY, OPTIONS, REFER..Supported: x-sipura..Content-Type:
application/sdp....v=0..o=- 659101 659101 IN IP4 20<BR>
0.43.63.68..s=-..c=IN IP4 xx.xx.63.68..t=0 0..m=audio 16444 RTP/AVP 18 100
101..a=rtpmap:18 G729a/8000..a=rtpmap:100 NSE/8000.<BR> .a=rtpmap:101
telephone-event/8000..a=fmtp:101
0-15..a=ptime:30..a=sendrecv..
<BR>#<BR>U xx.xx.63.75:5060 -> xx.xx.63.68:5060<BR> ACK
sip:2001@xx.xx.63.68:5060 SIP/2.0..Record-Route:
<sip:xx.xx.63.75;ftag=d1ccd3db9e31eb1fo0;lr=on>..Via: SIP/2.0/UDP
200<BR> .43.63.75;branch=0..Via: SIP/2.0/UDP
xx.xx.63.78:5060;branch=z9hG4bK-5a4c9c84..From: 2000
<sip:2000@xx.xx.63.75>;tag<BR> =d1ccd3db9e31eb1fo0..To:
<sip:2001@xx.xx.63.75>;tag=156298945b7d27i0..Call-ID: <A
href="mailto:d6e2df8b-5193d32f@xx.xx.63.78..CSeq">d6e2df8b-5193d32f@xx.xx.63.78..CSeq</A>:
101 AC<BR> K..Max-Forwards: 16..Contact: 2000
<sip:2000@xx.xx.63.78:5060>..User-Agent:
Linksys/PAP2-2.0.10(LSc)..Content-Length:<BR>
0....
<BR>#<BR>U xx.xx.63.78:16472 -> xx.xx.63.68:16444<BR> <A
href="mailto:..8...-..L....@.....tF.34..V.|B..n..a.k(.R">..8...-..L....@.....tF.34..V.|B..n..a.k(.R</A>
<BR>#<BR>I xx.xx.63.68 -> xx.xx.63.78 3:3<BR> <A
href="mailto:....E..F.........+?N.+?D@X@<.2....8...-..L....@.....tF.34..V.|B..n..a.k(.R">....E..F.........+?N.+?D@X@<.2....8...-..L....@.....tF.34..V.|B..n..a.k(.R</A>
<BR>#<BR>U xx.xx.63.68:1173 -> xx.xx.63.78:16472<BR>
..!o..vy.F.!...|...&.T.BP..Z..n...:.3..d..
<BR>#<BR>U xx.xx.63.78:16472 -> xx.xx.63.68:16444<BR> ..8......L...
.s..._exR..Kc.....+.O<.RZ.O{
<BR>#<BR>I xx.xx.63.68 -> xx.xx.63.78 3:3<BR> <A
href="mailto:....E..F.........+?N.+?D@X@<.2....8......L">....E..F.........+?N.+?D@X@<.2....8......L</A>...
.s..._exR..Kc.....+.O<.RZ.O{
<BR>#<BR>U xx.xx.63.68:1173 -> xx.xx.63.78:16472<BR> <A
href="mailto:..!p..wi.F.!.'D.F...K....@C..e.Z.[~P...Et">..!p..wi.F.!.'D.F...K....@C..e.Z.[~P...Et</A>,
<BR>#<BR>U xx.xx.63.78:16472 -> xx.xx.63.68:16444<BR> <A
href="mailto:..8.../..L......@H..._...,[.P...rU.A..P">..8.../..L......@H..._...,[.P...rU.A..P</A>...
<BR>#<BR>I xx.xx.63.68 -> xx.xx.63.78 3:3<BR> <A
href="mailto:....E..F.........+?N.+?D@X@<.2....8.../..L......@H..._...,[.P...rU.A..P">....E..F.........+?N.+?D@X@<.2....8.../..L......@H..._...,[.P...rU.A..P</A>...
<BR>#<BR>U xx.xx.63.68:1173 -> xx.xx.63.78:16472<BR>
..!q..xY.F.!....Mf.....Fu.Q.....~.}....v..
<BR>#<BR>U xx.xx.63.78:16472 -> xx.xx.63.68:16444<BR>
..8...0..L..\.~..h..+..|S.C.M..~6W}....6sR
<BR>#<BR>I xx.xx.63.68 -> xx.xx.63.78 3:3<BR> <A
href="mailto:....E..F.........+?N.+?D@X@<.2....8...0..L..\.~..h..+..|S.C.M..~6W}....6sR">....E..F.........+?N.+?D@X@<.2....8...0..L..\.~..h..+..|S.C.M..~6W}....6sR</A>
<BR>#<BR>U xx.xx.63.68:1173 -> xx.xx.63.78:16472<BR>
..!r..yI.F.!x|..Eo..._.1...;..GRz....*.x.Z
<BR>#<BR>U xx.xx.63.78:16472 -> xx.xx.63.68:16444<BR>
..8...1..L..x.....n."..6.v....S.D.......S.
<BR>#<BR>I xx.xx.63.68 -> xx.xx.63.78 3:3<BR> <A
href='mailto:....E..F.........+?N.+?D@X@<.2.!..8...1..L..x.....n."..6.v....S.D.......S'>....E..F.........+?N.+?D@X@<.2.!..8...1..L..x.....n."..6.v....S.D.......S</A>.
<BR>#<BR>U xx.xx.63.68:1173 -> xx.xx.63.78:16472<BR>
..!s..z9.F.!0...ooPE..F.
.5...E....v......
<BR>#<BR>U xx.xx.63.78:16472 -> xx.xx.63.68:16444<BR>
..8...2..L..z....+.b..r?...r....|..$.x...^
<BR>#<BR>I xx.xx.63.68 -> xx.xx.63.78 3:3<BR> <A
href="mailto:....E..F.........+?N.+?D@X@<.2....8...2..L..z....+.b..r?...r....|..$.x">....E..F.........+?N.+?D@X@<.2....8...2..L..z....+.b..r?...r....|..$.x</A>...^
<BR>#<BR>U xx.xx.63.68:1173 -> xx.xx.63.78:16472<BR>
..!t..{).F.!.o...{..r..3....F.$.r..
V..by.
<BR>#<BR><BR></DIV></FONT><FONT face=Arial size=2>
<DIV></DIV></FONT></BODY></HTML>