Hello,

I'm facing to some challenge in my learning process and using Kamalio as MS Teams SBC,

the request I receive from MS Teams seems to be correct but I need to overwrite the Original Domain, which is the FQDN of Kamailio itself, to another domain name:

INVITE sip:+15142144069@dev-sbc.openfabrik.com:5061;user=phone;transport=tls SIP/2.0
Record-Route: <sip:155.138.140.233;r2=on;lr=on;ftag=3e2ca0c5d0da4335b121f205a6f20541>
Record-Route: <sip:155.138.140.233:5061;transport=tls;r2=on;lr=on;ftag=3e2ca0c5d0da4335b121f205a6f20541>
FROM: Victor Velo<sip:+14507001777@sip.pstnhub.microsoft.com:5061;user=phone>;tag=3e2ca0c5d0da4335b121f205a6f20541
TO: <sip:+15142144069@dev-sbc.openfabrik.com:5061;user=phone>

rewrite to:

INVITE sip:+15142144069@dev-sbc.openfabrik.com:5061;user=phone;transport=tls SIP/2.0
Record-Route: <sip:155.138.140.233;r2=on;lr=on;ftag=3e2ca0c5d0da4335b121f205a6f20541>
Record-Route: <sip:155.138.140.233:5061;transport=tls;r2=on;lr=on;ftag=3e2ca0c5d0da4335b121f205a6f20541>
FROM: Victor Velo<sip:+14507001777@sip.pstnhub.microsoft.com:5061;user=phone>;tag=3e2ca0c5d0da4335b121f205a6f20541
TO: <sip:+15142144069@dev.myinternaldomain.openfabrik.com:5061;user=phone>

What would the best why to achieve this rewriting? 

Thanks,

Victor