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