<div dir="ltr"><div class="im"><div><div>Dear aamir,<br><br></div><div>As you said i have checked the
RTP packets, of incoming and outgoing call. <br>
</div></div></div><div class="im"><br> I am working under stand-alone independent network. And i don’t think so, there is an NAT enabled in my own network. <br><br></div>Please find the below logs ngrep based using in WiMAX network.<br>
<br>#<br>U <a href="http://192.168.2.78:27147" target="_blank">192.168.2.78:27147</a> -> <a href="http://192.168.2.40:5060" target="_blank">192.168.2.40:5060</a><br> SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.40:5060;branch=<div>
z9hG4bKac49.46354042.0;rport=5060;received=192.168.2.40..Via: SIP/2.0/UDP 192.168.2.66:33270;received=19<br>
2.168.2.66;branch=z8hG4bKedd26b72-24535979666936-keywe54;rport=33270..Max-Forwards: 70..To: "6006"<<a href="mailto:sip%3A6006@192.168.2.40" target="_blank">sip:6006@192.168.2.40</a>>;tag=188069316431..From: "6010" <sip:6010<br>
@<a href="http://192.168.2.40" target="_blank">192.168.2.40</a>>;tag=398687640631..Call-ID: edb8dc55-5fd7-154f-98-df-00210705d541@192.168.2.66..CSeq: 1524 INVITE..Contact: <<a href="http://sip:6006@192.168.2.78:27147" target="_blank">sip:6006@192.168.2.78:27147</a>>..User-Agen<br>
t: KEYWESOFT SIP Agent v3.1..Expires: 3600..Content-Length:
247..Content-Type: application/sdp....v=0..o=- 295794397 37438 IN IP4
192.168.2.78..s=KEYWESOFT SIP Ag<br> ent v3.1..c=IN IP4
192.168.2.78..t=0 0..m=audio 20934 RTP/AVP 8 0 101..a=rtpmap:8
PCMA/8000/1..a=rtpmap:0 PCMU/8000/1..a=rtpmap:101
telephone-event/8000..a=fmtp:1<br>
01 0-15..a=sendrecv.. <br>#<br>U <a href="http://192.168.2.40:5060" target="_blank">192.168.2.40:5060</a> -> <a href="http://192.168.2.66:33270" target="_blank">192.168.2.66:33270</a><br>
SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.2.66:33270;received=192.168.2.66;branch=z8hG4bKedd26b72-24535979666936-keywe54;rport=33270..Max-Forwards: 70..To: "6006"<<br> <a href="mailto:sip%3A6006@192.168.2.40" target="_blank">sip:6006@192.168.2.40</a>>;tag=188069316431..From: "6010" <<a href="mailto:sip%3A6010@192.168.2.40" target="_blank">sip:6010@192.168.2.40</a>>;tag=398687640631..Call-ID: edb8dc55-5fd7-154f-98-df-00210705d541@192.168.2.66..CSeq:<br>
1524 INVITE..Contact: <<a href="http://sip:6006@192.168.2.78:27147" target="_blank">sip:6006@192.168.2.78:27147</a>>..User-Agent: KEYWESOFT SIP Agent v3.1..Expires: 3600..Content-Length: 247..Content-Type: application/sdp....v<br>
=0..o=- 295794397 37438 IN IP4 192.168.2.78..s=KEYWESOFT SIP Agent
v3.1..c=IN IP4 192.168.2.78..t=0 0..m=audio 20934 RTP/AVP 8 0
101..a=rtpmap:8 PCMA/8000/1..a=rt<br> pmap:0 PCMU/8000/1..a=rtpmap:101 telephone-event/8000..a=fmtp:101 0-15..a=sendrecv.. <br>
#<br>U <a href="http://192.168.2.66:33270" target="_blank">192.168.2.66:33270</a> -> <a href="http://192.168.2.40:5060" target="_blank">192.168.2.40:5060</a><br> ACK <a href="http://sip:6006@192.168.2.40:5060" target="_blank">sip:6006@192.168.2.40:5060</a> SIP/2.0..Via: SIP/2.0/UDP 192.168.2.66:33270;branch=z8hG4bKbc73cd57-245451155943079-keywe55;rport..Max-Forwards: 70..To: "6006" <si<br>
<a href="http://p:6006@192.168.2.40:5060" target="_blank">p:6006@192.168.2.40:5060</a>>;tag=188069316431..From: "6010"<<a href="mailto:sip%3A6010@192.168.2.40" target="_blank">sip:6010@192.168.2.40</a>>;tag=398687640631..Call-ID: edb8dc55-5fd7-154f-98-df-00210705d541@192.168.2.66..CSe<br>
q: 1524 ACK..Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE, SUBSCRIBE, INFO..Contact: <<a href="http://sip:6010@192.168.2.66:33270" target="_blank">sip:6010@192.168.2.66:33270</a>>;expires=3600..User-Agent: K<br>
EYWESOFT SIP Agent v3.1..Expires: 3600..Content-Length: 0.... <br>#<br>U <a href="http://192.168.2.40:5060" target="_blank">192.168.2.40:5060</a> -> <a href="http://192.168.2.78:27147" target="_blank">192.168.2.78:27147</a><br>
ACK <a href="http://sip:6006@192.168.2.78:27147" target="_blank">sip:6006@192.168.2.78:27147</a> SIP/2.0..Record-Route: <sip:192.168.2.40;lr>..Via: SIP/2.0/UDP 192.168.2.40:5060;branch=z8hG4bKbc73cd57-245451155943079-keywe55..V<br>
ia: SIP/2.0/UDP 192.168.2.66:33270;received=192.168.2.66;branch=z8hG4bKbc73cd57-245451155943079-keywe55;rport=33270..Max-Forwards: 69..To: "6006" <sip:6006@192.16<br> 8.2.40:5060>;tag=188069316431..From: "6010"<<a href="mailto:sip%3A6010@192.168.2.40" target="_blank">sip:6010@192.168.2.40</a>>;tag=398687640631..Call-ID: edb8dc55-5fd7-154f-98-df-00210705d541@192.168.2.66..CSeq: 1524 ACK..<br>
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE, SUBSCRIBE, INFO..Contact: <<a href="http://sip:6010@192.168.2.66:33270" target="_blank">sip:6010@192.168.2.66:33270</a>>;expires=3600..User-Agent: KEYWESOFT SIP <br>
Agent v3.1..Expires: 3600..Content-Length: 0..P-hint: usrloc applied.... <br>#<br>U <a href="http://192.168.2.66:20932" target="_blank">192.168.2.66:20932</a> -> <a href="http://192.168.2.78:20934" target="_blank">192.168.2.78:20934</a><br>
.........~.y.......U.........WPTU...UWWQSQ.........V]RVQQ]P...............UPVUUUT..U........U...P]RRRP\RQWPYSQSP............TQWQRQTWU....UT..........QQW..VU...TUT<br> ........UQ <br>
#<br>U <a href="http://192.168.2.66:20932" target="_blank">192.168.2.66:20932</a> -> <a href="http://192.168.2.78:20934" target="_blank">192.168.2.78:20934</a><br> .........~.yPQVP]R[X\QVQ^Q..........UR]R\\_SWV............TQVS^RPQSRWPWWWVT.T.....SRSPS\QVPTVU........TPU...V]PQR_XYQP^]\^\..UVUWVUWRXZXSQT.VT..............PR]ZFE<br>
YRSR\R]^R] <br>#<br>U <a href="http://192.168.2.66:20932" target="_blank">192.168.2.66:20932</a> -> <a href="http://192.168.2.78:20934" target="_blank">192.168.2.78:20934</a><br>
.......@.~.yQ......WRS_YZZ_U.............UTP]X]PPQWSQQVVVY[SWQ]PWVVVQR\PTU..................QPVW.......U.WVWQ............WR]QUWS_QT.........UU.UTPSU...WU.UPQWW...<br> ........V\ <br>
#<br>U <a href="http://192.168.2.66:20932" target="_blank">192.168.2.66:20932</a> -> <a href="http://192.168.2.78:20934" target="_blank">192.168.2.78:20934</a><br> .........~.y_PWTT....VPU.............]]V]X^PTPSV.............VY\]]VT........U....QT.....RZYSWQR_XXDGAZ_PU.......UT.......................VPSQR_]RRYYQ..........WWW<br>
VPQWQRRT.. <br>#<br>U <a href="http://192.168.2.66:20932" target="_blank">192.168.2.66:20932</a> -> <a href="http://192.168.2.78:20934" target="_blank">192.168.2.78:20934</a><br>
.........~.y.................TVSY[ZZ_\\SPWT...........U....WU.................VV\[EEGX^YXZ_W..........VQW.....VT............QR]RSV..W\]PVPWTT...........QTTQSST...<br> .......... <br>
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