<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Hi,<div class=""><br class=""></div><div class="">We are having problem with Airtel service provider in India .</div><div class=""><br class=""></div><div class="">Asterisk sends SIP 200OK —> Airtel responds with ACK but asterisk does not recognises the same . Though the same works with chan_sip </div><div class=""><br class=""></div><div class=""><div class=""><--- Transmitting SIP response (971 bytes) to UDP:<a href="http://10.232.130.170:5060" class="">10.232.130.170:5060</a> ---></div><div class="">SIP/2.0 200 OK</div><div class="">Via: SIP/2.0/UDP 10.232.130.170:5060;rport=5060;received=10.232.130.170;branch=z9hG4bKhmhxdldlymycwbxjuhbbwumms;Role=3;Hpt=8f92_36;TRC=ffffffff-ffffffff</div><div class="">Call-ID: <a href="mailto:asbcwnc0a1gca6padwqawgqpwv8gqplbn1p1@B.5.268.ims.airtel.in" class="">asbcwnc0a1gca6padwqawgqpwv8gqplbn1p1@B.5.268.ims.airtel.in</a></div><div class="">From: <<a href="mailto:sip%3A9821397747@ims.airtel.in" class="">sip:9821397747@ims.airtel.in</a>>;tag=lk6q030e</div><div class="">To: <<a href="mailto:sip%3A%2B911244510099@ims.airtel.in" class="">sip:+911244510099@ims.airtel.in</a>>;tag=cc711ea4-479a-44ab-b69c-f0db6c9128ba</div><div class="">CSeq: 1 INVITE</div><div class="">Server: Asterisk PBX 13.20.0</div><div class="">Contact: <sip:<a href="http://10.165.10.4:5060" class="">10.165.10.4:5060</a>></div><div class="">Allow: OPTIONS, SUBSCRIBE, NOTIFY, PUBLISH, INVITE, ACK, BYE, CANCEL, UPDATE, PRACK, REGISTER, REFER, MESSAGE</div><div class="">Supported: 100rel, timer, replaces, norefersub</div><div class="">Session-Expires: 1800;refresher=uac</div><div class="">Require: timer</div><div class="">Content-Type: application/sdp</div><div class="">Content-Length: 254</div><div class=""><br class=""></div><div class="">v=0</div><div class="">o=- 129157300 129157302 IN IP4 10.165.10.4</div><div class="">s=Asterisk</div><div class="">c=IN IP4 10.165.10.4</div><div class="">t=0 0</div><div class="">m=audio 13250 RTP/AVP 8 0 97</div><div class="">a=rtpmap:8 PCMA/8000</div><div class="">a=rtpmap:0 PCMU/8000</div><div class="">a=rtpmap:97 telephone-event/8000</div><div class="">a=fmtp:97 0-16</div><div class="">a=ptime:20</div><div class="">a=maxptime:150</div><div class="">a=sendrecv</div><div class=""><br class=""></div><div class=""><--- Received SIP request (565 bytes) from UDP:<a href="http://10.232.130.170:5060" class="">10.232.130.170:5060</a> ---></div><div class="">ACK sip:<a href="http://10.165.10.4:5060" class="">10.165.10.4:5060</a> SIP/2.0</div><div class="">Via: SIP/2.0/UDP 10.232.130.170:5060;branch=z9hG4bK7xt7bymjduhsbdxuswm7tmlby;Role=3;Hpt=8f92_36;TRC=ffffffff-ffffffff</div><div class="">Call-ID: <a href="mailto:asbcwnc0a1gca6padwqawgqpwv8gqplbn1p1@B.5.268.ims.airtel.in" class="">asbcwnc0a1gca6padwqawgqpwv8gqplbn1p1@B.5.268.ims.airtel.in</a></div><div class="">From: "09821397747"<<a href="tel:9821397747;noa=subscriber;srvattri=national;phone-context=+91" class="">tel:9821397747;noa=subscriber;srvattri=national;phone-context=+91</a>>;tag=lk6q030e</div><div class="">To: <<a href="tel:+911244510099" class="">tel:+911244510099</a>>;tag=cc711ea4-479a-44ab-b69c-f0db6c9128ba</div><div class="">CSeq: 1 ACK</div><div class="">Max-Forwards: 65</div><div class="">P-Charging-Vector: icid-value=AE880F240B25F02018105182445;orig-ioi=10.232.128.242;term-ioi=SIP_astroscience_929405_4510050</div><div class="">Content-Length: 0</div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><--- Transmitting SIP response (971 bytes) to UDP:<a href="http://10.232.130.170:5060" class="">10.232.130.170:5060</a> ---></div><div class="">SIP/2.0 200 OK</div><div class="">Via: SIP/2.0/UDP 10.232.130.170:5060;rport=5060;received=10.232.130.170;branch=z9hG4bKb7ca91ba1k36z4bx08769zikz;Role=3;Hpt=9092_36;TRC=ffffffff-ffffffff</div><div class="">Call-ID: <a href="mailto:asbcjhwwc6h5slz6hjlr5coi74j46ozwh2hl@B.5.140.ims.airtel.in" class="">asbcjhwwc6h5slz6hjlr5coi74j46ozwh2hl@B.5.140.ims.airtel.in</a></div><div class="">From: <<a href="mailto:sip%3A9999056472@ims.airtel.in" class="">sip:9999056472@ims.airtel.in</a>>;tag=83301757</div><div class="">To: <<a href="mailto:sip%3A%2B911244510099@ims.airtel.in" class="">sip:+911244510099@ims.airtel.in</a>>;tag=d4e8a778-9918-4efd-a601-d7ca4de367e2</div><div class="">CSeq: 1 INVITE</div><div class="">Server: Asterisk PBX 13.20.0</div><div class="">Contact: <sip:<a href="http://10.165.10.4:5060" class="">10.165.10.4:5060</a>></div><div class="">Allow: OPTIONS, SUBSCRIBE, NOTIFY, PUBLISH, INVITE, ACK, BYE, CANCEL, UPDATE, PRACK, REGISTER, REFER, MESSAGE</div><div class="">Supported: 100rel, timer, replaces, norefersub</div><div class="">Session-Expires: 1800;refresher=uac</div><div class="">Require: timer</div><div class="">Content-Type: application/sdp</div><div class="">Content-Length: 254</div><div class=""><br class=""></div><div class="">v=0</div><div class="">o=- 129157121 129157123 IN IP4 10.165.10.4</div><div class="">s=Asterisk</div><div class="">c=IN IP4 10.165.10.4</div><div class="">t=0 0</div><div class="">m=audio 12000 RTP/AVP 8 0 97</div><div class="">a=rtpmap:8 PCMA/8000</div><div class="">a=rtpmap:0 PCMU/8000</div><div class="">a=rtpmap:97 telephone-event/8000</div><div class="">a=fmtp:97 0-16</div><div class="">a=ptime:20</div><div class="">a=maxptime:150</div><div class="">a=sendrecv</div><div class=""><br class=""></div><div class=""><--- Received SIP request (564 bytes) from UDP:<a href="http://10.232.130.170:5060" class="">10.232.130.170:5060</a> ---></div><div class="">ACK sip:<a href="http://10.165.10.4:5060" class="">10.165.10.4:5060</a> SIP/2.0</div><div class="">Via: SIP/2.0/UDP 10.232.130.170:5060;branch=z9hG4bK3k33bxii516c7k4ca0kixb9kz;Role=3;Hpt=9092_36;TRC=ffffffff-ffffffff</div><div class="">Call-ID: <a href="mailto:asbcjhwwc6h5slz6hjlr5coi74j46ozwh2hl@B.5.140.ims.airtel.in" class="">asbcjhwwc6h5slz6hjlr5coi74j46ozwh2hl@B.5.140.ims.airtel.in</a></div><div class="">From: "09999056472"<<a href="tel:9999056472;noa=subscriber;srvattri=national;phone-context=+91" class="">tel:9999056472;noa=subscriber;srvattri=national;phone-context=+91</a>>;tag=83301757</div><div class="">To: <<a href="tel:+911244510099" class="">tel:+911244510099</a>>;tag=d4e8a778-9918-4efd-a601-d7ca4de367e2</div><div class="">CSeq: 1 ACK</div><div class="">Max-Forwards: 5</div><div class="">P-Charging-Vector: icid-value=AE880F241021602018105182428;orig-ioi=10.232.128.242;term-ioi=SIP_astroscience_929405_4510050</div><div class="">Content-Length: 0</div><div class=""><br class=""></div><div class=""><div class="" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><div class="" style="font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; widows: 2; word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><span class="Apple-style-span" style="border-collapse: separate; font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; line-height: normal; border-spacing: 0px; -webkit-text-decorations-in-effect: none;"><div class="" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><span class="Apple-style-span" style="border-collapse: separate; font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; line-height: normal; text-align: -webkit-auto; border-spacing: 0px; -webkit-text-decorations-in-effect: none;"><div class="" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><span class="Apple-style-span" style="border-collapse: separate; font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; line-height: normal; text-align: -webkit-auto; border-spacing: 0px; -webkit-text-decorations-in-effect: none;"><div class="" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><div class="">Regards,</div></div></span></div></span></div></span></div></div></div></div><div class=""><div style="color: rgb(0, 0, 0); letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant-ligatures: normal; font-variant-position: normal; font-variant-caps: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant-ligatures: normal; font-variant-position: normal; font-variant-caps: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; border-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-stroke-width: 0px;"><div style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant-ligatures: normal; font-variant-position: normal; font-variant-caps: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; border-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-stroke-width: 0px;"><div style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><br class="Apple-interchange-newline"></div></span><br class="Apple-interchange-newline"></div></span><br class="Apple-interchange-newline"></div><br class="Apple-interchange-newline"></div><br class="Apple-interchange-newline"><br class="Apple-interchange-newline">
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