it is already in the thread.
200 OK from carrier SIP/2.0 200 OK Via: SIP/2.0/TLS KAM_PUB_IP:5061;branch=z9hG4bK18ff.3d856b8b0b007414ab2dec09cbabd574.0;i=a2 Via: SIP/2.0/TLS FS_PUB_IP:5061;received=FS_PUB_IP;rport=56403;branch=z9hG4bKKaee61yyZ98De From: "+14388006102" sip:+14388006102@KAM_PUB_IP;tag=XjQ5g4Ze5UaZp To: sip:933@CARRIER_PUB_IP:5061;transport=tls;tag=gK04d33797 Call-ID: b99c2b65-a827-123d-1984-4201c0a80193 CSeq: 84807919 INVITE Record-Route: sip:KAM_PUB_IP:5061;transport=tls;lr;ftag=XjQ5g4Ze5UaZp;did=aad.91c1;nat=yes Accept: application/sdp, application/isup, application/dtmf, application/dtmf-relay, multipart/mixed Contact: sip:933@CARRIER_PUB_IP:5061 Allow: INVITE,ACK,CANCEL,BYE,REGISTER,INFO,SUBSCRIBE,NOTIFY,PRACK,UPDATE,OPTIONS,MESSAGE,PUBLISH Require: timer Supported: timer Session-Expires: 1800;refresher=uac Content-Length: 324 Content-Disposition: session; handling=required Content-Type: application/sdp
v=0 o=Sonus_UAC 913845 351585 IN IP4 CARRIER_PUB_IP s=SIP Media Capabilities c=IN IP4 CARRIER_PUB_IP t=0 0 m=audio 33168 RTP/SAVP 0 101 a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:LfSgFSVqhXNWMSziOtwpEeYmNu0/kGiyuMVS8VXy a=rtpmap:0 PCMU/8000 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-15 a=sendrecv a=ptime:20