Hi,

Sorry I send the wrong log by mistake . This is the complete trace .

INVITE sip:+911244510...@ims.airtel.in 
<mailto:sip%3a%2b911244510...@ims.airtel.in> SIP/2.0^M
Via: SIP/2.0/UDP 
10.232.130.170:5060;branch=z9hG4bKmt21w13mts9hs12do2buotorb;Role=3;Hpt=8eb2_36;TRC=ffffffff-ffffffff^M
Call-ID: asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in 
<mailto:asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in>^M
From: <sip:9999056...@ims.airtel.in 
<mailto:sip%3a9999056...@ims.airtel.in>>;tag=a4mtt442^M
To: <sip:+911244510...@ims.airtel.in 
<mailto:sip%3a%2b911244510...@ims.airtel.in>>^M
CSeq: 1 INVITE^M
Allow: INVITE,ACK,OPTIONS,BYE,CANCEL,INFO,PRACK,NOTIFY,MESSAGE,REFER,UPDATE^M
Contact: <sip: 
<sip:10.232.130.170:5060;Dpt=f02a-200;Hpt=8eb2_16;CxtId=4;TRC=ffffffff-ffffffff>10.232
 
<sip:10.232.130.170:5060;Dpt=f02a-200;Hpt=8eb2_16;CxtId=4;TRC=ffffffff-ffffffff>.
 
<sip:10.232.130.170:5060;Dpt=f02a-200;Hpt=8eb2_16;CxtId=4;TRC=ffffffff-ffffffff>130.170
 
<sip:10.232.130.170:5060;Dpt=f02a-200;Hpt=8eb2_16;CxtId=4;TRC=ffffffff-ffffffff>:
 
<sip:10.232.130.170:5060;Dpt=f02a-200;Hpt=8eb2_16;CxtId=4;TRC=ffffffff-ffffffff>5060
 
<sip:10.232.130.170:5060;Dpt=f02a-200;Hpt=8eb2_16;CxtId=4;TRC=ffffffff-ffffffff>;Dpt=f02a-200;Hpt=8eb2_16;CxtId=4;TRC=ffffffff-ffffffff
 
<sip:10.232.130.170:5060;Dpt=f02a-200;Hpt=8eb2_16;CxtId=4;TRC=ffffffff-ffffffff>>^M
Max-Forwards: 5^M
Supported: timer,100rel,histinfo^M
Session-Expires: 1800^M
Min-SE: 600^M
P-Asserted-Identity: <tel:09999056472 <tel:09999056472>>^M
P-Charging-Vector: 
icid-value=AE880F241513B2018105191218;orig-ioi=10.232.128.242;term-ioi=SIP_astroscience_929405_4510050^M
Content-Length: 378^M
Content-Type: application/sdp^M

=====================================

SIP/2.0 100 Trying^M
Via: SIP/2.0/UDP 
10.232.130.170:5060;rport=5060;received=10.232.130.170;branch=z9hG4bKmt21w13mts9hs12do2buotorb;Role=3;Hpt=8eb2_36;TRC=ffffffff-ffffffff^M
Call-ID: asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in 
<mailto:asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in>^M
From: <sip:9999056...@ims.airtel.in 
<mailto:sip%3a9999056...@ims.airtel.in>>;tag=a4mtt442^M
To: <sip:+911244510...@ims.airtel.in 
<mailto:sip%3a%2b911244510...@ims.airtel.in>>^M
CSeq: 1 INVITE^M
Server: Asterisk PBX 13.20.0^M
Content-Length:  0^M


===================================

SIP/2.0 200 OK^M
Via: SIP/2.0/UDP 
10.232.130.170:5060;rport=5060;received=10.232.130.170;branch=z9hG4bKmt21w13mts9hs12do2buotorb;Role=3;Hpt=8eb2_36;TRC=ffffffff-ffffffff^M
Call-ID: asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in 
<mailto:asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in>^M
From: <sip:9999056...@ims.airtel.in 
<mailto:sip%3a9999056...@ims.airtel.in>>;tag=a4mtt442^M
To: <sip:+911244510...@ims.airtel.in 
<mailto:sip%3a%2b911244510...@ims.airtel.in>>;tag=8e9db72e-e65f-4a01-b2f3-b4bfae12ff5b^M
CSeq: 1 INVITE^M
Server: Asterisk PBX 13.20.0^M
Contact: <sip:10.165.10.4:5060 <http://10.165.10.4:5060/>>^M
Allow: OPTIONS, SUBSCRIBE, NOTIFY, PUBLISH, INVITE, ACK, BYE, CANCEL, UPDATE, 
PRACK, REGISTER, REFER, MESSAGE^M
Supported: 100rel, timer, replaces, norefersub^M
Session-Expires: 1800;refresher=uac^M
Require: timer^M
Content-Type: application/sdp^M
Content-Length:   254^M


==================================

ACK sip:10.165.10.4:5060 <http://10.165.10.4:5060/> SIP/2.0^M
Via: SIP/2.0/UDP 
10.232.130.170:5060;branch=z9hG4bK2wub332w4fo14wdhdm231b3d3;Role=3;Hpt=8eb2_36;TRC=ffffffff-ffffffff^M
Call-ID: asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in 
<mailto:asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in>^M
From: 
"09999056472"<tel:9999056472;noa=subscriber;srvattri=national;phone-context=+91 
<tel:9999056472;noa=subscriber;srvattri=national;phone-context=+91>>;tag=a4mtt442^M
To: <tel:+911244510099 
<tel:+911244510099>>;tag=8e9db72e-e65f-4a01-b2f3-b4bfae12ff5b^M
CSeq: 1 ACK^M
Max-Forwards: 5^M
P-Charging-Vector: 
icid-value=AE880F241513B2018105191218;orig-ioi=10.232.128.242;term-ioi=SIP_astroscience_929405_4510050^M
Content-Length: 0^M


===================================

INVITE sip:10.165.10.4:5060 <http://10.165.10.4:5060/> SIP/2.0^M
Via: SIP/2.0/UDP 
10.232.130.170:5060;branch=z9hG4bK3b1bf4mh9wfrs21dwftmh9wbs;Role=3;Hpt=8eb2_36;TRC=ffffffff-ffffffff^M
Call-ID: asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in 
<mailto:asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in>^M
From: <sip:9999056...@ims.airtel.in 
<mailto:sip%3a9999056...@ims.airtel.in>>;tag=a4mtt442^M
To: <sip:+911244510...@ims.airtel.in 
<mailto:sip%3a%2b911244510...@ims.airtel.in>>;tag=8e9db72e-e65f-4a01-b2f3-b4bfae12ff5b^M
CSeq: 2 INVITE^M
Allow: INVITE,ACK,OPTIONS,BYE,CANCEL,INFO,PRACK,NOTIFY,MESSAGE,REFER,UPDATE^M
Contact: <sip: 
<sip:10.232.130.170:5060;Dpt=f02a-200;Hpt=8eb2_16;CxtId=4;TRC=ffffffff-ffffffff>10.232
 
<sip:10.232.130.170:5060;Dpt=f02a-200;Hpt=8eb2_16;CxtId=4;TRC=ffffffff-ffffffff>.
 
<sip:10.232.130.170:5060;Dpt=f02a-200;Hpt=8eb2_16;CxtId=4;TRC=ffffffff-ffffffff>130.170
 
<sip:10.232.130.170:5060;Dpt=f02a-200;Hpt=8eb2_16;CxtId=4;TRC=ffffffff-ffffffff>:
 
<sip:10.232.130.170:5060;Dpt=f02a-200;Hpt=8eb2_16;CxtId=4;TRC=ffffffff-ffffffff>5060
 
<sip:10.232.130.170:5060;Dpt=f02a-200;Hpt=8eb2_16;CxtId=4;TRC=ffffffff-ffffffff>;Dpt=f02a-200;Hpt=8eb2_16;CxtId=4;TRC=ffffffff-ffffffff
 
<sip:10.232.130.170:5060;Dpt=f02a-200;Hpt=8eb2_16;CxtId=4;TRC=ffffffff-ffffffff>>^M
Max-Forwards: 5^M
Supported: timer^M
Session-Expires: 1800;refresher=uac^M
Min-SE: 600^M
P-Charging-Vector: 
icid-value=AE880F241513B2018105191218;orig-ioi=10.232.128.242;term-ioi=SIP_astroscience_929405_4510050^M
Content-Length: 192^M
Content-Type: application/sdp^M


=================================

SIP/2.0 491 Request Pending^M
Via: SIP/2.0/UDP 
10.232.130.170:5060;rport=5060;received=10.232.130.170;branch=z9hG4bK3b1bf4mh9wfrs21dwftmh9wbs;Role=3;Hpt=8eb2_36;TRC=ffffffff-ffffffff^M
Call-ID: asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in 
<mailto:asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in>^M
From: <sip:9999056...@ims.airtel.in 
<mailto:sip%3a9999056...@ims.airtel.in>>;tag=a4mtt442^M
To: <sip:+911244510...@ims.airtel.in 
<mailto:sip%3a%2b911244510...@ims.airtel.in>>;tag=8e9db72e-e65f-4a01-b2f3-b4bfae12ff5b^M
CSeq: 2 INVITE^M
Server: Asterisk PBX 13.20.0^M
Content-Length:  0^M
^M


================================

ACK sip:10.165.10.4:5060 <http://10.165.10.4:5060/> SIP/2.0^M
Via: SIP/2.0/UDP 
10.232.130.170:5060;branch=z9hG4bK3b1bf4mh9wfrs21dwftmh9wbs;Role=3;Hpt=8eb2_36;TRC=ffffffff-ffffffff^M
Call-ID: asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in 
<mailto:asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in>^M
From: <sip:9999056...@ims.airtel.in 
<mailto:sip%3a9999056...@ims.airtel.in>>;tag=a4mtt442^M
To: <sip:+911244510...@ims.airtel.in 
<mailto:sip%3a%2b911244510...@ims.airtel.in>>;tag=8e9db72e-e65f-4a01-b2f3-b4bfae12ff5b^M
CSeq: 2 ACK^M
Max-Forwards: 70^M
Content-Length: 0^M


=================================

SIP/2.0 200 OK^M
Via: SIP/2.0/UDP 
10.232.130.170:5060;rport=5060;received=10.232.130.170;branch=z9hG4bKmt21w13mts9hs12do2buotorb;Role=3;Hpt=8eb2_36;TRC=ffffffff-ffffffff^M
Call-ID: asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in 
<mailto:asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in>^M
From: <sip:9999056...@ims.airtel.in 
<mailto:sip%3a9999056...@ims.airtel.in>>;tag=a4mtt442^M
To: <sip:+911244510...@ims.airtel.in 
<mailto:sip%3a%2b911244510...@ims.airtel.in>>;tag=8e9db72e-e65f-4a01-b2f3-b4bfae12ff5b^M
CSeq: 1 INVITE^M
Server: Asterisk PBX 13.20.0^M
Contact: <sip:10.165.10.4:5060 <http://10.165.10.4:5060/>>^M
Allow: OPTIONS, SUBSCRIBE, NOTIFY, PUBLISH, INVITE, ACK, BYE, CANCEL, UPDATE, 
PRACK, REGISTER, REFER, MESSAGE^M
Supported: 100rel, timer, replaces, norefersub^M
Session-Expires: 1800;refresher=uac^M
Require: timer^M
Content-Type: application/sdp^M
Content-Length:   254^M


=================================

ACK sip:10.165.10.4:5060 <http://10.165.10.4:5060/> SIP/2.0^M
Via: SIP/2.0/UDP 
10.232.130.170:5060;branch=z9hG4bK2wub332w4fo14wdhdm231b3d3;Role=3;Hpt=8eb2_36;TRC=ffffffff-ffffffff^M
Call-ID: asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in 
<mailto:asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in>^M
From: 
"09999056472"<tel:9999056472;noa=subscriber;srvattri=national;phone-context=+91 
<tel:9999056472;noa=subscriber;srvattri=national;phone-context=+91>>;tag=a4mtt442^M
To: <tel:+911244510099 
<tel:+911244510099>>;tag=8e9db72e-e65f-4a01-b2f3-b4bfae12ff5b^M
CSeq: 1 ACK^M
Max-Forwards: 5^M
P-Charging-Vector: 
icid-value=AE880F241513B2018105191218;orig-ioi=10.232.128.242;term-ioi=SIP_astroscience_929405_4510050^

================================

SIP/2.0 200 OK^M
Via: SIP/2.0/UDP 
10.232.130.170:5060;rport=5060;received=10.232.130.170;branch=z9hG4bKmt21w13mts9hs12do2buotorb;Role=3;Hpt=8eb2_36;TRC=ffffffff-ffffffff^M
Call-ID: asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in 
<mailto:asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in>^M
From: <sip:9999056...@ims.airtel.in 
<mailto:sip%3a9999056...@ims.airtel.in>>;tag=a4mtt442^M
To: <sip:+911244510...@ims.airtel.in 
<mailto:sip%3a%2b911244510...@ims.airtel.in>>;tag=8e9db72e-e65f-4a01-b2f3-b4bfae12ff5b^M
CSeq: 1 INVITE^M
Server: Asterisk PBX 13.20.0^M
Contact: <sip:10.165.10.4:5060 <http://10.165.10.4:5060/>>^M
Allow: OPTIONS, SUBSCRIBE, NOTIFY, PUBLISH, INVITE, ACK, BYE, CANCEL, UPDATE, 
PRACK, REGISTER, REFER, MESSAGE^M
Supported: 100rel, timer, replaces, norefersub^M
Session-Expires: 1800;refresher=uac^M
Require: timer^M
Content-Type: application/sdp^M
Content-Length:   254^M


====================================

ACK sip:10.165.10.4:5060 <http://10.165.10.4:5060/> SIP/2.0^M
Via: SIP/2.0/UDP 
10.232.130.170:5060;branch=z9hG4bK2wub332w4fo14wdhdm231b3d3;Role=3;Hpt=8eb2_36;TRC=ffffffff-ffffffff^M
Call-ID: asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in 
<mailto:asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in>^M
From: 
"09999056472"<tel:9999056472;noa=subscriber;srvattri=national;phone-context=+91 
<tel:9999056472;noa=subscriber;srvattri=national;phone-context=+91>>;tag=a4mtt442^M
To: <tel:+911244510099 
<tel:+911244510099>>;tag=8e9db72e-e65f-4a01-b2f3-b4bfae12ff5b^M
CSeq: 1 ACK^M
Max-Forwards: 5^M
P-Charging-Vector: 
icid-value=AE880F241513B2018105191218;orig-ioi=10.232.128.242;term-ioi=SIP_astroscience_929405_4510050^M
Content-Length: 0^M


====================================

SIP/2.0 200 OK^M
Via: SIP/2.0/UDP 
10.232.130.170:5060;rport=5060;received=10.232.130.170;branch=z9hG4bKmt21w13mts9hs12do2buotorb;Role=3;Hpt=8eb2_36;TRC=ffffffff-ffffffff^M
Call-ID: asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in 
<mailto:asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in>^M
From: <sip:9999056...@ims.airtel.in 
<mailto:sip%3a9999056...@ims.airtel.in>>;tag=a4mtt442^M
To: <sip:+911244510...@ims.airtel.in 
<mailto:sip%3a%2b911244510...@ims.airtel.in>>;tag=8e9db72e-e65f-4a01-b2f3-b4bfae12ff5b^M
CSeq: 1 INVITE^M
Server: Asterisk PBX 13.20.0^M
Contact: <sip:10.165.10.4:5060 <http://10.165.10.4:5060/>>^M
Allow: OPTIONS, SUBSCRIBE, NOTIFY, PUBLISH, INVITE, ACK, BYE, CANCEL, UPDATE, 
PRACK, REGISTER, REFER, MESSAGE^M
Supported: 100rel, timer, replaces, norefersub^M
Session-Expires: 1800;refresher=uac^M
Require: timer^M
Content-Type: application/sdp^M
Content-Length:   254^M


===================================

ACK sip:10.165.10.4:5060 <http://10.165.10.4:5060/> SIP/2.0^M
Via: SIP/2.0/UDP 
10.232.130.170:5060;branch=z9hG4bK2wub332w4fo14wdhdm231b3d3;Role=3;Hpt=8eb2_36;TRC=ffffffff-ffffffff^M
Call-ID: asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in 
<mailto:asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in>^M
From: 
"09999056472"<tel:9999056472;noa=subscriber;srvattri=national;phone-context=+91 
<tel:9999056472;noa=subscriber;srvattri=national;phone-context=+91>>;tag=a4mtt442^M
To: <tel:+911244510099 
<tel:+911244510099>>;tag=8e9db72e-e65f-4a01-b2f3-b4bfae12ff5b^M
CSeq: 1 ACK^M
Max-Forwards: 5^M
P-Charging-Vector: 
icid-value=AE880F241513B2018105191218;orig-ioi=10.232.128.242;term-ioi=SIP_astroscience_929405_4510050^M


=============================

SIP/2.0 200 OK^M
Via: SIP/2.0/UDP 
10.232.130.170:5060;rport=5060;received=10.232.130.170;branch=z9hG4bKmt21w13mts9hs12do2buotorb;Role=3;Hpt=8eb2_36;TRC=ffffffff-ffffffff^M
Call-ID: asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in 
<mailto:asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in>^M
From: <sip:9999056...@ims.airtel.in 
<mailto:sip%3a9999056...@ims.airtel.in>>;tag=a4mtt442^M
To: <sip:+911244510...@ims.airtel.in 
<mailto:sip%3a%2b911244510...@ims.airtel.in>>;tag=8e9db72e-e65f-4a01-b2f3-b4bfae12ff5b^M
CSeq: 1 INVITE^M
Server: Asterisk PBX 13.20.0^M
Contact: <sip:10.165.10.4:5060 <http://10.165.10.4:5060/>>^M
Allow: OPTIONS, SUBSCRIBE, NOTIFY, PUBLISH, INVITE, ACK, BYE, CANCEL, UPDATE, 
PRACK, REGISTER, REFER, MESSAGE^M
Supported: 100rel, timer, replaces, norefersub^M
Session-Expires: 1800;refresher=uac^M
Require: timer^M
Content-Type: application/sdp^M
Content-Length:   254^M


================================

ACK sip:10.165.10.4:5060 <http://10.165.10.4:5060/> SIP/2.0^M
Via: SIP/2.0/UDP 
10.232.130.170:5060;branch=z9hG4bK2wub332w4fo14wdhdm231b3d3;Role=3;Hpt=8eb2_36;TRC=ffffffff-ffffffff^M
Call-ID: asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in 
<mailto:asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in>^M
From: 
"09999056472"<tel:9999056472;noa=subscriber;srvattri=national;phone-context=+91 
<tel:9999056472;noa=subscriber;srvattri=national;phone-context=+91>>;tag=a4mtt442^M
To: <tel:+911244510099 
<tel:+911244510099>>;tag=8e9db72e-e65f-4a01-b2f3-b4bfae12ff5b^M
CSeq: 1 ACK^M
Max-Forwards: 5^M
P-Charging-Vector: 
icid-value=AE880F241513B2018105191218;orig-ioi=10.232.128.242;term-ioi=SIP_astroscience_929405_4510050^M
Content-Length: 0^M


================================

SIP/2.0 200 OK^M
Via: SIP/2.0/UDP 
10.232.130.170:5060;rport=5060;received=10.232.130.170;branch=z9hG4bKmt21w13mts9hs12do2buotorb;Role=3;Hpt=8eb2_36;TRC=ffffffff-ffffffff^M
Call-ID: asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in 
<mailto:asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in>^M
From: <sip:9999056...@ims.airtel.in 
<mailto:sip%3a9999056...@ims.airtel.in>>;tag=a4mtt442^M
To: <sip:+911244510...@ims.airtel.in 
<mailto:sip%3a%2b911244510...@ims.airtel.in>>;tag=8e9db72e-e65f-4a01-b2f3-b4bfae12ff5b^M
CSeq: 1 INVITE^M
Server: Asterisk PBX 13.20.0^M
Contact: <sip:10.165.10.4:5060 <http://10.165.10.4:5060/>>^M
Allow: OPTIONS, SUBSCRIBE, NOTIFY, PUBLISH, INVITE, ACK, BYE, CANCEL, UPDATE, 
PRACK, REGISTER, REFER, MESSAGE^M
Supported: 100rel, timer, replaces, norefersub^M
Session-Expires: 1800;refresher=uac^M
Require: timer^M
Content-Type: application/sdp^M
Content-Length:   254^M


=============================

ACK sip:10.165.10.4:5060 <http://10.165.10.4:5060/> SIP/2.0^M
Via: SIP/2.0/UDP 
10.232.130.170:5060;branch=z9hG4bK2wub332w4fo14wdhdm231b3d3;Role=3;Hpt=8eb2_36;TRC=ffffffff-ffffffff^M
Call-ID: asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in 
<mailto:asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in>^M
From: 
"09999056472"<tel:9999056472;noa=subscriber;srvattri=national;phone-context=+91 
<tel:9999056472;noa=subscriber;srvattri=national;phone-context=+91>>;tag=a4mtt442^M
To: <tel:+911244510099 
<tel:+911244510099>>;tag=8e9db72e-e65f-4a01-b2f3-b4bfae12ff5b^M
CSeq: 1 ACK^M
Max-Forwards: 5^M
P-Charging-Vector: 
icid-value=AE880F241513B2018105191218;orig-ioi=10.232.128.242;term-ioi=SIP_astroscience_929405_4510050^M
Content-Length: 0^M


===============================

SIP/2.0 200 OK^M
Via: SIP/2.0/UDP 
10.232.130.170:5060;rport=5060;received=10.232.130.170;branch=z9hG4bKmt21w13mts9hs12do2buotorb;Role=3;Hpt=8eb2_36;TRC=ffffffff-ffffffff^M
Call-ID: asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in 
<mailto:asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in>^M
From: <sip:9999056...@ims.airtel.in 
<mailto:sip%3a9999056...@ims.airtel.in>>;tag=a4mtt442^M
To: <sip:+911244510...@ims.airtel.in 
<mailto:sip%3a%2b911244510...@ims.airtel.in>>;tag=8e9db72e-e65f-4a01-b2f3-b4bfae12ff5b^M
CSeq: 1 INVITE^M
Server: Asterisk PBX 13.20.0^M
Contact: <sip:10.165.10.4:5060 <http://10.165.10.4:5060/>>^M
Allow: OPTIONS, SUBSCRIBE, NOTIFY, PUBLISH, INVITE, ACK, BYE, CANCEL, UPDATE, 
PRACK, REGISTER, REFER, MESSAGE^M
Supported: 100rel, timer, replaces, norefersub^M
Session-Expires: 1800;refresher=uac^M
Require: timer^M
Content-Type: application/sdp^M
Content-Length:   254^M


==================================

ACK sip:10.165.10.4:5060 <http://10.165.10.4:5060/> SIP/2.0^M
Via: SIP/2.0/UDP 
10.232.130.170:5060;branch=z9hG4bK2wub332w4fo14wdhdm231b3d3;Role=3;Hpt=8eb2_36;TRC=ffffffff-ffffffff^M
Call-ID: asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in 
<mailto:asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in>^M
From: 
"09999056472"<tel:9999056472;noa=subscriber;srvattri=national;phone-context=+91 
<tel:9999056472;noa=subscriber;srvattri=national;phone-context=+91>>;tag=a4mtt442^M
To: <tel:+911244510099 
<tel:+911244510099>>;tag=8e9db72e-e65f-4a01-b2f3-b4bfae12ff5b^M
CSeq: 1 ACK^M
Max-Forwards: 5^M
P-Charging-Vector: 
icid-value=AE880F241513B2018105191218;orig-ioi=10.232.128.242;term-ioi=SIP_astroscience_929405_4510050^M
Content-Length: 0^M


===================================

SIP/2.0 200 OK^M
Via: SIP/2.0/UDP 
10.232.130.170:5060;rport=5060;received=10.232.130.170;branch=z9hG4bKmt21w13mts9hs12do2buotorb;Role=3;Hpt=8eb2_36;TRC=ffffffff-ffffffff^M
Call-ID: asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in 
<mailto:asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in>^M
From: <sip:9999056...@ims.airtel.in 
<mailto:sip%3a9999056...@ims.airtel.in>>;tag=a4mtt442^M
To: <sip:+911244510...@ims.airtel.in 
<mailto:sip%3a%2b911244510...@ims.airtel.in>>;tag=8e9db72e-e65f-4a01-b2f3-b4bfae12ff5b^M
CSeq: 1 INVITE^M
Server: Asterisk PBX 13.20.0^M
Contact: <sip:10.165.10.4:5060 <http://10.165.10.4:5060/>>^M
Allow: OPTIONS, SUBSCRIBE, NOTIFY, PUBLISH, INVITE, ACK, BYE, CANCEL, UPDATE, 
PRACK, REGISTER, REFER, MESSAGE^M
Supported: 100rel, timer, replaces, norefersub^M
Session-Expires: 1800;refresher=uac^M
Require: timer^M
Content-Type: application/sdp^M
Content-Length:   254^M


==================================

ACK sip:10.165.10.4:5060 <http://10.165.10.4:5060/> SIP/2.0^M
Via: SIP/2.0/UDP 
10.232.130.170:5060;branch=z9hG4bK2wub332w4fo14wdhdm231b3d3;Role=3;Hpt=8eb2_36;TRC=ffffffff-ffffffff^M
Call-ID: asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in 
<mailto:asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in>^M
From: 
"09999056472"<tel:9999056472;noa=subscriber;srvattri=national;phone-context=+91 
<tel:9999056472;noa=subscriber;srvattri=national;phone-context=+91>>;tag=a4mtt442^M
To: <tel:+911244510099 
<tel:+911244510099>>;tag=8e9db72e-e65f-4a01-b2f3-b4bfae12ff5b^M
CSeq: 1 ACK^M
Max-Forwards: 5^M
P-Charging-Vector: 
icid-value=AE880F241513B2018105191218;orig-ioi=10.232.128.242;term-ioi=SIP_astroscience_929405_4510050^M
Content-Length: 0^M


==================================

SIP/2.0 200 OK^M
Via: SIP/2.0/UDP 
10.232.130.170:5060;rport=5060;received=10.232.130.170;branch=z9hG4bKmt21w13mts9hs12do2buotorb;Role=3;Hpt=8eb2_36;TRC=ffffffff-ffffffff^M
Call-ID: asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in 
<mailto:asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in>^M
From: <sip:9999056...@ims.airtel.in 
<mailto:sip%3a9999056...@ims.airtel.in>>;tag=a4mtt442^M
To: <sip:+911244510...@ims.airtel.in 
<mailto:sip%3a%2b911244510...@ims.airtel.in>>;tag=8e9db72e-e65f-4a01-b2f3-b4bfae12ff5b^M
CSeq: 1 INVITE^M
Server: Asterisk PBX 13.20.0^M
Contact: <sip:10.165.10.4:5060 <http://10.165.10.4:5060/>>^M
Allow: OPTIONS, SUBSCRIBE, NOTIFY, PUBLISH, INVITE, ACK, BYE, CANCEL, UPDATE, 
PRACK, REGISTER, REFER, MESSAGE^M
Supported: 100rel, timer, replaces, norefersub^M
Session-Expires: 1800;refresher=uac^M
Require: timer^M
Content-Type: application/sdp^M
Content-Length:   254^M

================================

ACK sip:10.165.10.4:5060 <http://10.165.10.4:5060/> SIP/2.0^M
Via: SIP/2.0/UDP 
10.232.130.170:5060;branch=z9hG4bK2wub332w4fo14wdhdm231b3d3;Role=3;Hpt=8eb2_36;TRC=ffffffff-ffffffff^M
Call-ID: asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in 
<mailto:asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in>^M
From: 
"09999056472"<tel:9999056472;noa=subscriber;srvattri=national;phone-context=+91 
<tel:9999056472;noa=subscriber;srvattri=national;phone-context=+91>>;tag=a4mtt442^M
To: <tel:+911244510099 
<tel:+911244510099>>;tag=8e9db72e-e65f-4a01-b2f3-b4bfae12ff5b^M
CSeq: 1 ACK^M
Max-Forwards: 5^M
P-Charging-Vector: 
icid-value=AE880F241513B2018105191218;orig-ioi=10.232.128.242;term-ioi=SIP_astroscience_929405_4510050^M
Content-Length: 0^M


==================================

SIP/2.0 200 OK^M
Via: SIP/2.0/UDP 
10.232.130.170:5060;rport=5060;received=10.232.130.170;branch=z9hG4bKmt21w13mts9hs12do2buotorb;Role=3;Hpt=8eb2_36;TRC=ffffffff-ffffffff^M
Call-ID: asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in 
<mailto:asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in>^M
From: <sip:9999056...@ims.airtel.in 
<mailto:sip%3a9999056...@ims.airtel.in>>;tag=a4mtt442^M
To: <sip:+911244510...@ims.airtel.in 
<mailto:sip%3a%2b911244510...@ims.airtel.in>>;tag=8e9db72e-e65f-4a01-b2f3-b4bfae12ff5b^M
CSeq: 1 INVITE^M
Server: Asterisk PBX 13.20.0^M
Contact: <sip:10.165.10.4:5060 <http://10.165.10.4:5060/>>^M
Allow: OPTIONS, SUBSCRIBE, NOTIFY, PUBLISH, INVITE, ACK, BYE, CANCEL, UPDATE, 
PRACK, REGISTER, REFER, MESSAGE^M
Supported: 100rel, timer, replaces, norefersub^M
Session-Expires: 1800;refresher=uac^M
Require: timer^M
Content-Type: application/sdp^M
Content-Length:   254^M


=================================

ACK sip:10.165.10.4:5060 <http://10.165.10.4:5060/> SIP/2.0^M
Via: SIP/2.0/UDP 
10.232.130.170:5060;branch=z9hG4bK2wub332w4fo14wdhdm231b3d3;Role=3;Hpt=8eb2_36;TRC=ffffffff-ffffffff^M
Call-ID: asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in 
<mailto:asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in>^M
From: 
"09999056472"<tel:9999056472;noa=subscriber;srvattri=national;phone-context=+91 
<tel:9999056472;noa=subscriber;srvattri=national;phone-context=+91>>;tag=a4mtt442^M
To: <tel:+911244510099 
<tel:+911244510099>>;tag=8e9db72e-e65f-4a01-b2f3-b4bfae12ff5b^M
CSeq: 1 ACK^M
Max-Forwards: 5^M
P-Charging-Vector: 
icid-value=AE880F241513B2018105191218;orig-ioi=10.232.128.242;term-ioi=SIP_astroscience_929405_4510050^M


==============================

SIP/2.0 200 OK^M
Via: SIP/2.0/UDP 
10.232.130.170:5060;rport=5060;received=10.232.130.170;branch=z9hG4bKmt21w13mts9hs12do2buotorb;Role=3;Hpt=8eb2_36;TRC=ffffffff-ffffffff^M
Call-ID: asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in 
<mailto:asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in>^M
From: <sip:9999056...@ims.airtel.in 
<mailto:sip%3a9999056...@ims.airtel.in>>;tag=a4mtt442^M
To: <sip:+911244510...@ims.airtel.in 
<mailto:sip%3a%2b911244510...@ims.airtel.in>>;tag=8e9db72e-e65f-4a01-b2f3-b4bfae12ff5b^M
CSeq: 1 INVITE^M
Server: Asterisk PBX 13.20.0^M
Contact: <sip:10.165.10.4:5060 <http://10.165.10.4:5060/>>^M
Allow: OPTIONS, SUBSCRIBE, NOTIFY, PUBLISH, INVITE, ACK, BYE, CANCEL, UPDATE, 
PRACK, REGISTER, REFER, MESSAGE^M
Supported: 100rel, timer, replaces, norefersub^M
Session-Expires: 1800;refresher=uac^M
Require: timer^M
Content-Type: application/sdp^M
Content-Length:   254^M
^M


================================


ACK sip:10.165.10.4:5060 <http://10.165.10.4:5060/> SIP/2.0^M
Via: SIP/2.0/UDP 
10.232.130.170:5060;branch=z9hG4bK2wub332w4fo14wdhdm231b3d3;Role=3;Hpt=8eb2_36;TRC=ffffffff-ffffffff^M
Call-ID: asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in 
<mailto:asbc52d2tt928058dddd8m75ss9189t0r...@b.5.229.ims.airtel.in>^M
From: 
"09999056472"<tel:9999056472;noa=subscriber;srvattri=national;phone-context=+91 
<tel:9999056472;noa=subscriber;srvattri=national;phone-context=+91>>;tag=a4mtt442^M
To: <tel:+911244510099 
<tel:+911244510099>>;tag=8e9db72e-e65f-4a01-b2f3-b4bfae12ff5b^M
CSeq: 1 ACK^M
Max-Forwards: 5^M
P-Charging-Vector: 
icid-value=AE880F241513B2018105191218;orig-ioi=10.232.128.242;term-ioi=SIP_astroscience_929405_4510050^M

Regards,

Abhay Gupta


> On 09-Oct-2018, at 5:49 PM, Joshua Colp <jc...@digium.com> wrote:
> 
> On Tue, Oct 9, 2018, at 9:11 AM, Abhay Gupta wrote:
>> Hi,
>> 
>> We are having problem with Airtel service provider in India .
>> 
>> Asterisk sends SIP 200OK —> Airtel responds with ACK but asterisk does 
>> not recognises the same . Though the same works with chan_sip 
> 
> I see no problem with this. It's not a retransmission, those are two separate 
> calls. You can tell based on the Call-ID being different. The first is 
> "asbcwnc0a1gca6padwqawgqpwv8gqplbn...@b.5.268.ims.airtel.in" the second is 
> "asbcjhwwc6h5slz6hjlr5coi74j46ozwh...@b.5.140.ims.airtel.in". It appears as 
> though the ACKs were handled appropriately. If there is something else then 
> you'd need to be more specific about what is happening.
> 
> -- 
> Joshua Colp
> Digium - A Sangoma Company | Senior Software Developer
> 445 Jan Davis Drive NW - Huntsville, AL 35806 - US
> Check us out at: www.digium.com & www.asterisk.org
> 
> -- 
> _____________________________________________________________________
> -- Bandwidth and Colocation Provided by http://www.api-digital.com --
> 
> Astricon is coming up October 9-11!  Signup is available at: 
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> 
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> To UNSUBSCRIBE or update options visit:
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